0001828791-23-000012 | 10-K | XBRL Viewer

Convertible Preferred Units and Common Units

12 Months Ended

Dec. 31, 2022

Convertible Preferred Units And Common Units [Abstract]

Convertible Preferred Units and Common Units

2016 and 2019 Convertible Preferred Units

Pursuant to the Unit Repurchase Agreement completed on October 31, 2019, the 600,000 2016 convertible preferred units representing the Former Holdco’s ownership interest were retired by Viant Technology LLC, and Viant Technology LLC sold 600,000 2019 convertible preferred units to Capital V LLC.

The 2016 convertible preferred units held by the Former Holdco had a liquidation preference of $190.65 per unit. Each preferred unit was convertible at the option of the holder at any time into one common unit by written notice to Viant Technology LLC.

The liquidation preference provisions of the 2016 convertible preferred units held by the Former Holdco were considered contingent redemption provisions because there were certain elements that were not solely within the control of Viant Technology LLC, such as a change in control of Viant Technology LLC. Accordingly, Viant Technology LLC has presented these 2016 convertible preferred units within the mezzanine portion of the accompanying consolidated balance sheets.

The 2019 convertible preferred units held by Capital V LLC have a liquidation preference equal to the initial capital contribution plus an annual preferred return available to the holders only upon liquidation, which is calculated on a daily basis by multiplying the accrued stated value of the unit on the first day of each calendar quarter by 0.028% (10% divided by 360). The accrued stated value is calculated as $12.50 per preferred unit plus the accrued return. Each preferred unit may be converted at the option of the holder at any time into one common unit by written notice to Viant Technology LLC.

The liquidation preference provisions of the 2019 convertible preferred units held by Capital V LLC are considered contingent redemption provisions because there are certain elements that are not solely within the control of Viant Technology LLC, such as a change in control of Viant Technology LLC. Accordingly, the Company has presented the 2019 convertible preferred stock within the mezzanine portion of the accompanying consolidated balance sheets.

The 2019 convertible preferred units were issued at an implied discount of $27.6 million, representing a beneficial conversion feature recorded in additional paid-in capital of the same amount. A beneficial conversion feature is measured as the difference between the effective conversion price of the 2019 convertible preferred units, $12.50 per unit, and the fair value of the common units into which the preferred units are convertible at issuance, $58.43 per unit. Since the 2019 convertible preferred units are perpetual in that they have no stated maturity date and are immediately convertible at any time, the discount upon issuance was immediately and fully amortized as a deemed dividend on the issuance date.

The fair value of common units was derived using the Black-Scholes-Merton option valuation model, which incorporated a combination of the market approach and income approach weighted at 50% to each approach. The valuation model requires the

Company to make assumptions and judgments regarding the variables used in the calculation. These variables include the expected term, expected volatility, expected risk-free interest rate and other relevant inputs. Expected term is based on the estimated liquidation event occurrence.

Expected volatility is based on 3.25-year historical volatility of guideline companies commensurate with the time period. The expected risk-free rate is based on the yield of 3-year U.S. Treasury notes as of the valuation date.

The following outlines the option valuation assumptions used in the fair value calculation of common units:


Risk-free interest rate	2.28	%
Volatility	70	%
Expected term	< 2 years
Discount for lack of marketability	29	%

Common Units

There were 400,000 common units authorized, issued and outstanding as of December 31, 2020. Distributions to members, as determined and approved by the board of managers, are made to holders of preferred and common units in proportion to their holdings of common units then outstanding on an as-converted basis. All profit and loss allocations, including those made as a result of a capital transaction, will be made pursuant to the provisions of the Viant Technology LLC Agreement.

Member Dividend Distributions

In October 2020, Viant Technology LLC’s board of managers declared and approved a distribution of $5.0 million to the holders of preferred and common units in accordance with the provisions of the Viant Technology LLC Agreement, resulting in payment of $3.0 million to the preferred unitholders and $2.0 million to the common unitholders.

In connection with the IPO in February 2021, the preferred and common units of Viant Technology LLC were converted to Class B units and thus have no balance as of December 31, 2022 and 2021. Refer to Note 12—Earnings (Loss) Per Share/Unit for additional information.

Basis of Presentation and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2022

Basis Of Presentation And Summary Of Significant Accounting Policies [Abstract]

Summary of Changes in Allowance for Doubtful Accounts

The following table presents changes in the allowance for doubtful accounts:


	Year Ended December 31,
	2022		2021
Beginning balance	$	54	$	335
Provision for (recovery of) doubtful accounts	1,260		(107)
Write-offs, net of recoveries	(299)		(174)
Ending balance	$	1,015	$	54

Schedule of Estimated Useful Lives of Property, Equipment and Software

Property, equipment and software are recorded at historical cost, less accumulated depreciation. Depreciation is computed using the straight-line method based upon the following estimated useful lives:


			Years
Computer equipment			3-5
Purchased software			3
Capitalized software development costs			3
Furniture, fixtures and office equipment			10
Leasehold improvements			*

*Leasehold improvements are depreciated on a straight-line basis over the term of the lease, or the useful life of the assets, whichever is shorter.

Schedules of Concentrations of Credit Risk

The following table provides the Company’s concentrations of credit risk with respect to advertising agency holding companies as a percentage of the Company’s total revenues.


	Year Ended December 31,
	2022		2021
Advertising Agency Holding Company
A	<10.0 %		15.5	%
B	13.5	%	14.2	%

Revolving Credit Facility and PPP Loan

12 Months Ended

Dec. 31, 2022

Debt Disclosure [Abstract]

Revolving Credit Facility and PPP Loan

The Company’s debt and revolving credit facilities consisted of the following:


	As of December 31,
	2022		2021
Revolving credit facility	$	—	$	17,500
PPP Loan	—		—
Total debt	—		17,500
Less: Current portion of long-term debt	—		—
Total long-term debt	$	—	$	17,500

Revolving Credit Facility

On October 31, 2019, we entered into an asset-based revolving credit and security agreement (the “Loan Agreement”) with PNC Bank. The Loan Agreement provides a senior secured revolving credit facility of up to $40.0 million with a maturity date of October 31, 2024. The Loan Agreement is collateralized by security interests in substantially all of our assets.

Advances under the Loan Agreement bear interest through maturity at a variable rate based upon our selection of either a Domestic Rate or a LIBOR Rate, plus an applicable margin (“Domestic Rate Loans” and “LIBOR Rate Loans”). The Domestic Rate is defined as a fluctuating interest rate equal to the greater of (1) the base commercial lending rate of PNC Bank, (2) the overnight federal funds rate plus 0.50% and (3) the Daily LIBOR Rate plus 1.00%. The effective weighted average interest rate for the year ended December 31, 2022 was 0.69%. The applicable margin is between 0.75% to 1.25% for Domestic Rate Loans and between 1.75% and 2.25% for LIBOR Rate Loans based on maintaining certain undrawn availability ratios. The applicable margin as of December 31, 2022 was equal to 0.75% for Domestic Rate Loans and 1.75% for LIBOR Rate Loans. The facility fee for undrawn amounts under the Loan Agreement is 0.375% per annum. We will be required to pay customary letter of credit fees, as necessary.

The Loan Agreement contains customary conditions to borrowings, events of default and covenants, including covenants that restrict our ability to sell assets, make changes to the nature of the business, engage in mergers or acquisitions, incur, assume or permit to exist additional indebtedness and guarantees, create or permit to exist liens, pay dividends, issue equity instruments, make distributions or redeem or repurchase capital stock or make other investments, and engage in transactions with affiliates. The Loan

Agreement also requires that we maintain compliance with a minimum Fixed Charge Coverage Ratio (as defined in the Loan Agreement) of 1.40 to 1.00 at any time undrawn availability under the Loan Agreement is less than 25%. As of December 31, 2022, we were in compliance with all covenants.

On May 6, 2022, the Company fully paid off the outstanding balance of advances under our revolving credit facility, and the carrying value as of December 31, 2022 was zero.

The carrying value as of December 31, 2021 was $17.5 million, which was recorded in “Long-term debt” on the consolidated balance sheet and approximated its fair value as the interest rate is variable and approximates prevailing market interest rates for similar debt arrangements. The fair value of debt was estimated using primarily Level 2 inputs including quoted market prices or discounted cash flow analyses, based on estimated incremental borrowing rates for similar types of borrowing arrangements.

PPP Loan

On April 14, 2020, the Company received proceeds from the PPP Loan in the amount of approximately $6.0 million from PNC Bank, as lender, pursuant to the Paycheck Protection Program of the Coronavirus Aid, Relief, and Economic Security Act ("CARES Act"). The PPP Loan, which was evidenced by a note dated April 11, 2020, bore interest at an annual rate of 1.0% and matured on April 11, 2022. No interest or principal was due during the first fifteen months after April 11, 2020, although interest continued to accrue over this fifteen-month deferral period.

Proceeds from loans granted under the CARES Act were to be used for payroll, costs to continue employee group health care benefits, rent, utilities and certain other qualified costs (collectively, “qualifying expenses”). The Company used the PPP Loan proceeds for qualifying expenses. In June 2021, the Company received notice of forgiveness of the PPP Loan in whole, including all accrued unpaid interest and recorded the forgiveness of approximately $6.0 million of principal and $0.1 million of accrued interest in "Gain on extinguishment of debt" in the consolidated statements of operations for the year ended December 31, 2021.

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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-Section S99
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-Subparagraph (SX 210.4-08(c))
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1B
-Subparagraph (g)
-URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495334-112611

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 1C
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-URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495334-112611

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495348-112611

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Topic 470
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-URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495371-112611

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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-URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611

+ Details

Property, Equipment and Software, Net

12 Months Ended

Dec. 31, 2022

Property, Plant and Equipment [Abstract]

Property, Equipment and Software, Net

Major classes of property, equipment and software were as follows:


	As of December 31,
	2022		2021
Capitalized software development costs	$	72,988	$	61,490
Computer equipment	1,116		1,823
Purchased software	32		32
Furniture, fixtures and office equipment	1,226		1,159
Leasehold improvements	2,571		2,178
Total property, equipment and software	77,933		66,682
Less: Accumulated depreciation	(54,827)		(44,351)
Total property, equipment and software, net	$	23,106	$	22,331

Depreciation recorded in the consolidated statements of operations was as follows:


	Year Ended December 31,
	2022		2021		2020
Platform operations	$	9,786	$	7,688	$	6,638
Sales and marketing	—		—		—
Technology and development	1,646		1,599		1,608
General and administrative	580		625		631
Total	$	12,012	$	9,912	$	8,877

Interest cost recorded in the consolidated balance sheets and consolidated statements of operations was as follows:


	Year Ended December 31,
	2022		2021		2020
Amount charged to expense	$	450	$	865	$	1,055
Amount capitalized within property, equipment and software, net	4		20		31
Total interest cost	$	454	$	885	$	1,086

Stock-based Compensation - Summary of Valuation Assumptions used in Fair Value Calculation of Incentive Units (Details)	12 Months Ended
	Dec. 31, 2022
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Expected dividend yield	0.00%

Goodwill and Intangible Assets, Net

12 Months Ended

Dec. 31, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets, Net

The Company’s goodwill balance of $12.4 million as of December 31, 2022 and 2021, was recorded as part of the Company’s February 2017 acquisition of Adelphic. The goodwill balance was determined based on the excess of the purchase price over the fair value of the identifiable net assets acquired and represents its future revenue and earnings potential and certain other assets acquired that do not meet the recognition criteria, such as assembled workforce.

Goodwill is tested for impairment at least annually as of the first day of the fourth fiscal quarter, or more frequently if indicators of impairment exist during the fiscal year. Refer to Note 2—Basis of Presentation and Summary of Significant Accounting Policies for additional information. The Company performed an impairment test of its goodwill as of the first day of the fourth fiscal quarter in accordance with the policy. The results of this test indicated that the Company’s goodwill was not impaired. No goodwill impairment was recorded for the years ended December 31, 2022, 2021 or 2020. As of December 31, 2022, there is no accumulated goodwill impairment loss.

Intangible assets primarily consist of acquired developed technology, customer relationships, trade names and trademarks resulting from business combinations and acquired patent intangible assets, which are recorded at acquisition-date fair value, less accumulated amortization. The Company determines the appropriate useful life of its intangible assets by performing an analysis of expected cash flows of the acquired assets. Intangible assets are amortized over their estimated useful lives using a straight-line method, which approximates the pattern in which the economic benefits are consumed. No impairment was recorded for intangible assets or other long-lived assets during the years ended December 31, 2022, 2021 or 2020.

The balances of intangibles assets and accumulated amortization are as follows:


	As of December 31, 2022
	Remaining Weighted- Average Useful Life (years)	Gross Amount		Accumulated Amortization		Net Carrying Amount
Developed technology	0.1	$	4,927	$	(4,869)	$	58
Customer relationships	1.1	2,300		(1,944)		356
Trademarks/tradenames	3.2	1,400		(1,147)		253
Total		$	8,627	$	(7,960)	$	667


	As of December 31, 2021
	Remaining Weighted- Average Useful Life (years)	Gross Amount		Accumulated Amortization		Net Carrying Amount
Developed technology	1.1	$	4,927	$	(4,169)	$	758
Customer relationships	2.1	2,300		(1,615)		685
Trademarks/tradenames	4.0	1,400		(1,057)		343
Total		$	8,627	$	(6,841)	$	1,786

Amortization recorded in the consolidated statements of operations was as follows:


	Year Ended December 31,
	2022		2021		2020
Platform operations	$	700	$	700	$	700
Sales and marketing	—		—		—
Technology and development	—		—		—
General and administrative	419		529		529
Total	$	1,119	$	1,229	$	1,229

Estimated future amortization of intangible assets as of December 31, 2022 is as follows:


	As of December 31,
Year	2022
2023	$	467
2024	107
2025	80
2026	13
2027	—
Thereafter	—
Total	$	667

Revolving Credit Facility and PPP Loan - Schedule of Debt and Revolving Credit Facilities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Total debt	$ 0	$ 17,500
Less: Current portion of long-term debt	0	0
Total long-term debt	0	17,500
Revolving Credit Facility
Debt Instrument [Line Items]
Total debt	0	17,500
Paycheck Protection Program Loan
Debt Instrument [Line Items]
Total debt	$ 0	$ 0

- Definition

Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

+ References + Details

Revenue (Tables)

12 Months Ended

Dec. 31, 2022

Revenue from Contract with Customer [Abstract]

Summary of Disaggregation of Revenue

The disaggregation of revenue was as follows:


	Year Ended December 31,
	2022		2021		2020
Over time	$	800	$	3,880	$	4,612
Point in time	196,368		220,247		160,639
Total revenue	$	197,168	$	224,127	$	165,251

Summary of Changes in Deferred Revenue

The following table summarizes the changes in deferred revenue balances:


	Year Ended December 31,
	2022		2021
Beginning balance	$	6,551	$	8,337
Agreement modification	(6,163)		—
Recognition of deferred revenue	(265)		(1,786)
Deferral of revenue	—		—
Ending balance	$	123	$	6,551

Property, Equipment and Software, Net - Schedule of Interest Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Abstract]
Amount charged to expense	$ 450	$ 865	$ 1,055
Amount capitalized within property, equipment and software, net	4	20	31
Total interest cost	$ 454	$ 885	$ 1,086

Commitments and Contingencies	12 Months Ended
Commitments and Contingencies	Dec. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Lease Commitments As of December 31, 2022, the Company had non-cancelable operating lease commitments for office space that have been recorded as operating lease liabilities. Refer to Note 5—Leases for additional information. Hosting Commitments As of December 31, 2022, the Company had non-cancelable contractual agreements related to the hosting of our data storage processing, storage, and other computing services. We had $6.7 million in commitments as of December 31, 2022, due by the first quarter of 2024. Legal Matters From time to time, the Company is subject to various legal proceedings and claims, either asserted or unasserted, that arise in the ordinary course of business. Although the outcome of the various legal proceedings and claims cannot be predicted with certainty, management does not believe that any of these proceedings or other claims will have a material effect on the Company’s business, financial condition, results of operations or cash flows.

CONSOLIDATED STATEMENTS OF CONVERTIBLE PREFERRED UNITS AND EQUITY (DEFICIT) - USD ($) shares in Thousands, $ in Thousands	Total	Convertible Preferred Units	Common Units	Common Stock Class A Common Stock	Common Stock Class B Common Stock	Additional Paid-In Capital	Accumulated Deficit	Members' Equity	Treasury Stock	Noncontrolling Interests
Beginning balance, convertible preferred units (shares) at Dec. 31, 2019		600
Beginning balance, convertible preferred units at Dec. 31, 2019		$ 7,500
Beginning balance (shares) at Dec. 31, 2019			400
Beginning balance at Dec. 31, 2019	$ 15,205							$ 15,205
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accrued member tax distributions	(10,726)							(10,726)
Member dividends	(5,000)							(5,000)
Net income (loss)	20,638							20,638
Ending balance, convertible preferred units (shares) at Dec. 31, 2020		600
Ending balance, convertible preferred units at Dec. 31, 2020		$ 7,500
Ending balance (shares) at Dec. 31, 2020			400	0	0
Ending balance at Dec. 31, 2020	20,117			$ 0	$ 0	$ 0	$ 0	20,117		$ 0
Ending balance, treasury stock (shares) at Dec. 31, 2020									0
Ending balance, treasury stock at Dec. 31, 2020									$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accrued member tax distributions	(413)					(413)
Net income (loss)	(37,609)
Net income prior to Reorganization Transactions	669							669
Effect of Reorganization Transactions (shares)		(600)
Effect of Reorganization Transactions		$ (7,500)
Effect of Reorganization Transactions (shares)			(400)		48,936
Effect of Reorganization Transactions	7,500				$ 49	28,237		(20,786)
Issuance of Class A common stock in initial public offering, net of underwriting and offering costs (shares)				11,500	(1,500)
Issuance of Class A common stock in initial public offering, net of underwriting and offering costs	228,185			$ 12	$ (2)	228,175
Exchange of Class B common stock for Class A common stock (shares)				329	(329)
Exchange of Class B common stock for Class A common stock	0
Issuance of common stock in connection with equity-based compensation plans (shares)				2,092
Issuance of common stock in connection with equity- based compensation plans	0			$ 2		(2)
Repurchase of treasury shares in connection with the taxes paid related to net share settlement of equity awards (shares)									(915)
Repurchase of treasury stock in connection with the taxes paid related to net share settlement of equity awards	(15,045)								$ (15,045)
Reissuance of treasury stock in connection with equity-based compensation plans (shares)									699
Reissuance of treasury stock in connection with equity-based compensation plans	0						(12,397)		$ 12,397
Allocation of equity to noncontrolling interests						(252,948)				252,948
Stock-based compensation	79,839					79,839
Net loss	(38,278)						(7,742)			(30,536)
Ending balance, convertible preferred units (shares) at Dec. 31, 2021		0
Ending balance, convertible preferred units at Dec. 31, 2021		$ 0
Ending balance (shares) at Dec. 31, 2021			0	13,921	47,107
Ending balance at Dec. 31, 2021	282,574			$ 14	$ 47	82,888	(20,139)	0		222,412
Ending balance, treasury stock (shares) at Dec. 31, 2021									(216)
Ending balance, treasury stock at Dec. 31, 2021									$ (2,648)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accrued member tax distributions	(11)					(11)
Net income (loss)	(48,089)						(11,913)			(36,176)
Exchange of Class B common stock for Class A common stock (shares)				25	(25)
Exchange of Class B common stock for Class A common stock	0
Issuance of common stock in connection with equity-based compensation plans (shares)				838
Issuance of common stock in connection with equity- based compensation plans	0			$ 1		(1)
Repurchase of treasury shares in connection with the taxes paid related to net share settlement of equity awards (shares)									(424)
Repurchase of treasury stock in connection with the taxes paid related to net share settlement of equity awards	(2,036)								$ (2,036)
Reissuance of treasury stock in connection with equity-based compensation plans (shares)									500
Reissuance of treasury stock in connection with equity-based compensation plans	0						(4,209)		$ 4,209
Allocation of equity to noncontrolling interests						(20,284)				20,284
Stock-based compensation	33,330					33,330
Ending balance, convertible preferred units (shares) at Dec. 31, 2022		0
Ending balance, convertible preferred units at Dec. 31, 2022		$ 0
Ending balance (shares) at Dec. 31, 2022			0	14,784	47,082
Ending balance at Dec. 31, 2022	$ 265,768			$ 15	$ 47	$ 95,922	$ (36,261)	$ 0	$ (475)	$ 206,520
Ending balance, treasury stock (shares) at Dec. 31, 2022									(140)

Guarantees and Indemnities - Additional Information (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2021
Guarantees And Indemnities [Abstract]
Contractual obligation amount	$ 0	$ 0

Commitment and Contingencies (Details) $ in Millions	Dec. 31, 2022 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Hosting commitments	$ 6.7

Related Parties	12 Months Ended
Related Parties	Dec. 31, 2022
Related Party Transactions [Abstract]
Related Parties	Related Parties The Company had a balance of $0.2 million and $0.3 million as of December 31, 2022 and December 31, 2021, respectively, payable to related parties for expenses they incurred on our behalf, which was recorded within "Accrued liabilities" on the consolidated balance sheets. The related expense incurred by the Company was $1.0 million and $0.3 million for the years ended December 31, 2022 and 2021, respectively. The Company recorded no revenue from its transactions with related parties during the years ended December 31, 2022, 2021, and 2020. The Company recorded no purchases from related parties during the years ended December 31, 2022, 2021, and 2020. As of December 31, 2022 and 2021, no amounts were due to or due from related parties, other than those mentioned above.

Property, Equipment and Software, Net - Schedule of Depreciation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Property Plant And Equipment [Line Items]
Depreciation	$ 12,012	$ 9,912	$ 8,877
Platform operations
Property Plant And Equipment [Line Items]
Depreciation	9,786	7,688	6,638
Sales and marketing
Property Plant And Equipment [Line Items]
Depreciation	0	0	0
Technology and development
Property Plant And Equipment [Line Items]
Depreciation	1,646	1,599	1,608
General and administrative
Property Plant And Equipment [Line Items]
Depreciation	$ 580	$ 625	$ 631

Income Taxes and Tax Receivable Agreement - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Line Items]
U.S. statutory federal income tax rate	21.00%	21.00%
Percentage of exclusive of non-controlling interest due to income tax expense/(benefit) not recognize on share of pre-tax book income (loss)	76.30%
Effective tax rate	0.00%	(0.00%)
Income tax expense recognized	$ 0	$ 0	$ 0
Deferred tax assets, valuation allowance	11,480,000	9,338,000
Federal
Income Tax Disclosure [Line Items]
Operating loss carryforwards	10,400,000	5,500,000
Federal \| Research Tax Credit Carryforward
Income Tax Disclosure [Line Items]
Tax credits	500,000
State
Income Tax Disclosure [Line Items]
Operating loss carryforwards	6,100,000	$ 8,100,000
State \| Research Tax Credit Carryforward
Income Tax Disclosure [Line Items]
Tax credits	$ 300,000
Viant Technology LLC
Income Tax Disclosure [Line Items]
Percentage of economic interest held	23.70%

Stock-based Compensation (Tables)

12 Months Ended

Dec. 31, 2022

Share-Based Payment Arrangement [Abstract]

Summary of Stock-based Compensation

Stock-based compensation recorded in the consolidated statements of operations was as follows:


	Year Ended December 31,
	2022		2021		2020
Platform operations	$	4,761	$	13,096	$	—
Sales and marketing	9,010		25,639		—
Technology and development	5,323		12,373		—
General and administrative	9,807		17,714		—
Total	$	28,901	$	68,822	$	—

Summary of RSU Activity

The following summarizes RSU activity:


	Number of Shares (in thousands)	Weighted- Average Grant-Date Fair Value
RSUs outstanding as of December 31, 2021	3,033	$	24.29
Granted	3,023	5.96
Vested	(1,338)	24.26
Canceled/forfeited	(790)	12.38
RSUs outstanding as of December 31, 2022	3,928	$	12.59

Summary of Stock Option/Incentive Activity

Nonqualified Stock Options

The following summarizes nonqualified stock option activity:


	Number of Options (in thousands)	Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Term (years)	Aggregate Intrinsic Value (in thousands)
Options outstanding as of December 31, 2021	220	$	15.88	9.7	$	20
Granted	4,101	5.98
Exercised	—	—
Canceled	(648)	8.32
Expired	(12)	15.51
Options outstanding as of December 31, 2022	3,661	$	6.14	9.2	$	—

Vested and exercisable	44	$	18.55	4.0	$	—

Summary of Assumptions used in Fair Value of Stock Options Granted

The following table presents the assumptions used in the Black-Scholes model to determine the fair value of nonqualified stock options for the years ended December 31, 2022 and 2021.


	Year Ended December 31,
	2022		2021
Risk free interest rate	1.4% - 2.8%		1.2	%
Expected volatility	61.5% - 62.7%		61.1	%
Expected term (in years)	5.9 - 6.0		5.9
Expected dividend yield	0.0	%	0.0	%

Nature of Operations - Additional Information (Details) $ / shares in Units, $ in Thousands		12 Months Ended
	Feb. 12, 2021 USD ($) $ / shares shares	Dec. 31, 2022 USD ($) shares	Dec. 31, 2021 USD ($) shares	Dec. 31, 2020 USD ($) shares
Nature Of Operations [Line Items]
Preferred stock, shares authorized (shares)	10,000,000	10,000,000
Common units, units outstanding (shares)			400,000	400,000
Proceeds from issuance of common stock, net of underwriting discounts \| $		$ 0	$ 232,500	$ 0
Underwriters
Nature Of Operations [Line Items]
Common stock shares issued and sold (shares)	10,000,000
Sale of stock, price per share (in dollars per share) \| $ / shares	$ 25.00
Proceeds from issuance of common stock, net of underwriting discounts \| $	$ 250,000
Payments of stock issuance costs \| $	$ 17,500
Class A Common Stock
Nature Of Operations [Line Items]
Common stock, shares authorized (shares)	450,000,000	450,000,000
Underwrites options exercised shares issued (shares)	1,500,000
Common stock voting rights percentage	19.50%
Percentage of voting rights of outstanding common stock	100.00%
Class B Common Stock
Nature Of Operations [Line Items]
Common stock, shares authorized (shares)	150,000,000	150,000,000
Common stock shares issued to continuing members (share)		24,870
Common stock voting rights percentage	80.50%
Class B Common Stock \| Viant Technology LLC
Nature Of Operations [Line Items]
Common stock shares issued for each membership unit (share)	1
Common stock shares issued to continuing members (share)	48,935,559
Continuing Members Class B Units \| Viant Technology LLC
Nature Of Operations [Line Items]
Exchange basis for continuing members		1
Common units, units outstanding (shares)	48,935,559
Class A Units
Nature Of Operations [Line Items]
Members equity units received in exchange of units	1,500,000
Class A Units \| Viant Technology LLC
Nature Of Operations [Line Items]
Payments to acquire units \| $	$ 232,500
Member units acquired, units (in shares)	10,000,000

Basis of Presentation and Summary of Significant Accounting Policies - Summary of Changes in Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 54	$ 335
Provision for (recovery of) doubtful accounts	1,260	(107)	$ (584)
Write-offs, net of recoveries	(299)	(174)
Ending balance	$ 1,015	$ 54	$ 335

Income Taxes and Tax Receivable Agreement

12 Months Ended

Dec. 31, 2022

Income Tax Disclosure [Abstract]

Income Taxes and Tax Receivable Agreement

The provision for income taxes differs from the amount of income tax computed by applying the applicable U.S. statutory federal income tax rate of 21% to income before provision of income taxes due to Viant Technology LLC’s pass-through structure for U.S. income tax purposes and the valuation allowance against the deferred tax asset in the current and prior-year periods, as well as a pass-through permanent difference related to the forgiveness of the PPP Loan in the prior-year periods. The Company did not recognize an income tax benefit (expense) on its share of pre-tax book income (loss), exclusive of the noncontrolling interest of 76.3% due to the full valuation allowance against its deferred tax assets, resulting in an effective tax rate ("ETR") of 0.0% for the 12 months ended December 31, 2022 and 2021.

The Company is the managing member of Viant Technology LLC and, as a result, consolidates the financial results of Viant Technology LLC in the consolidated financial statements. Viant Technology LLC is a pass-through entity for U.S. federal and most applicable state and local income tax purposes following a corporate reorganization effected in connection with the IPO. As an entity classified as a partnership for tax purposes, Viant Technology LLC is not subject to U.S. federal and certain state and local income taxes. Prior to the IPO during 2021, the Company did not exist and thus no income tax expense was recognized for Viant Technology LLC for the period ended December 31, 2020. Subsequent to the IPO, any taxable income or loss generated by Viant Technology LLC is passed through to and included in the taxable income or loss of its members, including the Company. The Company is taxed as a corporation and pays corporate federal, state and local taxes with respect to income allocated from Viant Technology LLC, based on Viant Technology, Inc.'s 23.7% economic interest in Viant Technology LLC.

The provision for income taxes attributable to the Company consisted of the following for the years ended December 31, 2022 and 2021:


	Year Ended December 31,
	2022		2021
Current:	$	—	$	—
U.S. federal income tax	—		—
State and local income tax	—		—
Foreign income tax	—		—

Deferred:
U.S. federal income tax	—		—
State and local income tax	—		—
Foreign income tax	—		—

Income tax (benefit) provision	$	—	$	—

The effective tax rate for the years ended December 31, 2022 and 2021 was 0.0%. A reconciliation of the statutory tax rate to the effective tax rate for the years presented are as follows:


	Year Ended December 31,
	2022		2021
Income tax benefit (expense) at federal statutory rate	21.0	%	21.0	%
Income passed through to noncontrolling interests	(15.8)	%	(16.7)	%
State and local taxes, net of federal benefit	0.8	%	0.6	%
Permanent items	(0.3)	%	0.7	%
Stock-based compensation	(2.9)	%	(3.2)	%
Credits	0.8	%	—	%
Other, net	0.9	%	—	%
Valuation allowance	(4.5)	%	(2.4)	%
Total effective rate	0.0	%	0.0	%

Set forth below are the tax effects of temporary differences that give rise to a significant portion of the deferred tax assets and deferred tax liabilities.


	Year Ended December 31,
	2022		2021
Deferred tax assets
Net operating loss carryforwards	$	2,561	$	1,321
Tax credits	800		—
Investment in Partnership	7,866		7,909
Other, net	253		108
Subtotal	11,480		9,338
Valuation allowance	(11,480)		(9,338)
Total deferred tax assets	—		—

Deferred tax liabilities
Other, net	—		—
Total deferred tax liabilities	—		—
Net deferred tax (liabilities) assets	$	—	$	—

In assessing the realizability of deferred tax assets, the Company considers whether it is probable that some or all of the deferred tax assets will not be realized. In determining whether the deferred taxes are realizable, the Company considers the period of expiration of the tax asset, historical and projected taxable income, and tax liabilities for the tax jurisdiction in which the tax asset is located. Valuation allowances are provided to reduce the amounts of deferred tax assets to an amount that is more likely than not to be realized based on an assessment of positive and negative evidence, including estimates of future taxable income necessary to realize future deductible amounts. As of December 31, 2022 and 2021, the Company has recorded a valuation allowance against its deferred tax assets of $11.5 million and $9.3 million, respectively, as management cannot conclude whether it is more likely than not that these deferred tax assets will be realized.

As of December 31, 2022 and 2021, the Company has federal net operating losses of approximately $10.4 million and $5.5 million, respectively. As of December 31, 2022 and 2021, the Company has state net operating losses of approximately $6.1 million and $8.1 million, respectively. The federal net operating losses carry forward indefinitely and state net operating losses begin to expire in 2031. As of December 31, 2022, the Company has federal and state research and development tax credits of approximately $0.5 million and $0.3 million, respectively. The federal credits will begin to expire in 2042 and the state credits carryforward until exhausted.

As of December 31, 2022 and 2021, the Company has no significant unrecognized tax benefits and has not recorded interest and penalties related to uncertain tax positions.

The Company is subject to U.S. federal and state income taxes. The Company's U.S. federal and state returns are open to examination for all periods ending December 31, 2020 and thereafter. However, to the extent allowed by law the tax authorities may have the right to examine prior periods where net operating losses were generated and carried forward, and make adjustments up to the amount of the net operating loss or credit carry forward amount.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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-Subparagraph (SX 210.4-08(h)(2))
-URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

+ Details

Revenue

12 Months Ended

Dec. 31, 2022

Revenue from Contract with Customer [Abstract]

Revenue

The Company recognizes revenue in accordance with ASC 606. Although the Company maintains agreements with its customers in multiple contractual forms, the overall promise within each of the contract types is to provide customers the ability to plan, buy and measure their digital advertising campaigns using our platform. Refer to Note 2—Basis of Presentation and Summary of Significant Accounting Policies for additional information

The disaggregation of revenue was as follows:


	Year Ended December 31,
	2022		2021		2020
Over time	$	800	$	3,880	$	4,612
Point in time	196,368		220,247		160,639
Total revenue	$	197,168	$	224,127	$	165,251

Revenue for unsatisfied performance obligations expected to be recognized in the future for contracts with an original expected duration of greater than one year was $0.1 million and $6.6 million as of December 31, 2022 and 2021, respectively. These amounts do not include contracts with an original expected duration of less than one year, which is the majority of the Company’s contracts. The decrease from the prior year end was primarily due to an agreement modification whereby the Company agreed to a $6.2 million cash settlement with one of its customers in exchange for the full, final and immediate termination of certain deferred revenue liabilities. The remaining decrease was due to the recognition of revenue during the normal course of business. As of December 31, 2022, all of the remaining balance is expected to be recognized within one year.

The following table summarizes the changes in deferred revenue balances:


	Year Ended December 31,
	2022		2021
Beginning balance	$	6,551	$	8,337
Agreement modification	(6,163)		—
Recognition of deferred revenue	(265)		(1,786)
Deferral of revenue	—		—
Ending balance	$	123	$	6,551

The revenue recognized consisted of the Company satisfying performance obligations during the normal course of business. Deferred revenue that is anticipated to be recognized during the succeeding 12-month period is recorded in "Current portion of deferred revenue" and the remaining amount is recorded in "Long-term portion of deferred revenue" within the consolidated balance sheets.

- Definition

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-URI https://asc.fasb.org/topic&trid=49130388

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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-Name Accounting Standards Codification
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Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130554-203045

+ Details

Stock-based Compensation

12 Months Ended

Dec. 31, 2022

Share-Based Payment Arrangement [Abstract]

Stock-based Compensation

During the year ended December 31, 2020, employees and other service providers were eligible to be granted profit interests in the form of common units under an equity incentive plan or other arrangement approved by the board of managers. The recipients of the common units were not required to make any capital contributions in exchange for their units.

Stock-based compensation recorded in the consolidated statements of operations was as follows:


	Year Ended December 31,
	2022		2021		2020
Platform operations	$	4,761	$	13,096	$	—
Sales and marketing	9,010		25,639		—
Technology and development	5,323		12,373		—
General and administrative	9,807		17,714		—
Total	$	28,901	$	68,822	$	—

Phantom Unit Plan and 2021 LTIP

On January 1, 2020, Viant Technology LLC formalized the 2020 Equity Based Incentive Compensation Plan (the “Phantom Unit Plan”), under which Viant Technology LLC was authorized to issue 12,500,000 phantom units. Upon the occurrence of a liquidation event, the units will participate in any increase in the fair value of the entity above the stated distribution threshold of $100 million. The units vest on a quarterly basis over four years, and all units granted to an employee, whether vested or unvested, automatically forfeit upon termination of employment for any reason. Based on the terms of the Phantom Unit Plan and unit award grants, no compensation cost was recorded in the consolidated statement of operations for the year ended December 31, 2020.

In connection with the IPO, which occurred on February 12, 2021, the Phantom Unit Plan was replaced by the 2021 LTIP. The aggregate maximum number of shares of the Company’s Class A common stock that may be issued pursuant to stock awards under the 2021 LTIP, or the Share Reserve, is 11,787,112 shares of Class A common stock. The Share Reserve will automatically increase

on January 1 of each year commencing on January 1, 2022 and ending with a final increase on January 1, 2031 in an amount equal to 5% of the total number of shares of capital stock outstanding on December 31st of the preceding calendar year; provided, however, that the Company’s board of directors may provide that there will not be a January 1st increase in the Share Reserve in a given year or that the increase will be less than 5% of the shares of capital stock outstanding on the preceding December 31st.

On February 12, 2021, 6.2 million RSUs were granted under the Company’s 2021 LTIP. The Company is authorized to grant RSUs, incentive stock options, nonqualified stock options, stock appreciation rights, restricted stock awards, and performance stock awards under its 2021 LTIP. As of December 31, 2022, the Company has currently only granted RSUs and nonqualified stock options. Under the Company’s 2021 LTIP, 4.4 million shares remained available for grant as of December 31, 2022.

Stock-based Compensation

RSUs

The following summarizes RSU activity:


	Number of Shares (in thousands)	Weighted- Average Grant-Date Fair Value
RSUs outstanding as of December 31, 2021	3,033	$	24.29
Granted	3,023	5.96
Vested	(1,338)	24.26
Canceled/forfeited	(790)	12.38
RSUs outstanding as of December 31, 2022	3,928	$	12.59

The total fair value of RSUs, as of their respective vesting dates, during the year ended December 31, 2022 was $7.5 million. As of December 31, 2022, the Company had unrecognized stock-based compensation relating to RSUs of approximately $41.1 million, which is expected to be recognized over a weighted-average period of 2.5 years.

Nonqualified Stock Options

The following summarizes nonqualified stock option activity:


	Number of Options (in thousands)	Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Term (years)	Aggregate Intrinsic Value (in thousands)
Options outstanding as of December 31, 2021	220	$	15.88	9.7	$	20
Granted	4,101	5.98
Exercised	—	—
Canceled	(648)	8.32
Expired	(12)	15.51
Options outstanding as of December 31, 2022	3,661	$	6.14	9.2	$	—

Vested and exercisable	44	$	18.55	4.0	$	—

The weighted-average grant date fair value of options granted during the year ended December 31, 2022 was $3.50 per share. As of December 31, 2022, the Company had unrecognized stock-based compensation relating to unvested nonqualified stock options of approximately $10.3 million, which is expected to be recognized over a weighted-average period of 3.2 years.

The following table presents the assumptions used in the Black-Scholes model to determine the fair value of nonqualified stock options for the years ended December 31, 2022 and 2021.


	Year Ended December 31,
	2022		2021
Risk free interest rate	1.4% - 2.8%		1.2	%
Expected volatility	61.5% - 62.7%		61.1	%
Expected term (in years)	5.9 - 6.0		5.9
Expected dividend yield	0.0	%	0.0	%

Risk-Free Interest Rate. The Company bases the risk-free interest rate assumption for equity awards on the rates for U.S. Treasury securities with maturities similar to those of the expected term of the award being valued.

Expected Volatility. Due to the limited trading history of the Company’s common stock, the expected volatility assumption is based on volatilities of a peer group of similar companies whose share prices are publicly available. The Company will continue to apply this process until a sufficient amount of historical information regarding the volatility of the Company’s own stock price becomes available.

Expected Term. Given the insufficient historical data relating to nonqualified stock option exercises, the expected term assumption is based on expected terms of a peer group of similar companies whose expected terms are publicly available. The Company will continue to apply this process until a sufficient amount of historical information regarding the Company’s nonqualified stock option exercises becomes available.

Expected Dividend Yield. The Company’s expected dividend yield assumption is zero as it has never paid dividends and has no present intention to do so in the future.

Issuance of Shares

Upon vesting of shares under the LTIP, we will issue treasury stock. If treasury stock is not available, Class A common stock will be issued.

Convertible Preferred Units and Common Units - Summary of Valuation Assumptions Used in Fair Value Calculation of Common Units (Details)	12 Months Ended
	Dec. 31, 2022
Minimum
Convertible Preferred Units And Common Units [Line Items]
Expected term	2 years
Risk-free interest rate
Convertible Preferred Units And Common Units [Line Items]
Measurement input	0.0228
Volatility
Convertible Preferred Units And Common Units [Line Items]
Measurement input	0.70
Discount for lack of marketability
Convertible Preferred Units And Common Units [Line Items]
Measurement input	0.29

Income Taxes and Tax Receivable Agreement (Tables)

12 Months Ended

Dec. 31, 2022

Income Tax Disclosure [Abstract]

Schedule of Provision for Income Taxes

The provision for income taxes attributable to the Company consisted of the following for the years ended December 31, 2022 and 2021:


	Year Ended December 31,
	2022		2021
Current:	$	—	$	—
U.S. federal income tax	—		—
State and local income tax	—		—
Foreign income tax	—		—

Deferred:
U.S. federal income tax	—		—
State and local income tax	—		—
Foreign income tax	—		—

Income tax (benefit) provision	$	—	$	—

Schedule of Effective Income Tax Rate Reconciliation

The effective tax rate for the years ended December 31, 2022 and 2021 was 0.0%. A reconciliation of the statutory tax rate to the effective tax rate for the years presented are as follows:


	Year Ended December 31,
	2022		2021
Income tax benefit (expense) at federal statutory rate	21.0	%	21.0	%
Income passed through to noncontrolling interests	(15.8)	%	(16.7)	%
State and local taxes, net of federal benefit	0.8	%	0.6	%
Permanent items	(0.3)	%	0.7	%
Stock-based compensation	(2.9)	%	(3.2)	%
Credits	0.8	%	—	%
Other, net	0.9	%	—	%
Valuation allowance	(4.5)	%	(2.4)	%
Total effective rate	0.0	%	0.0	%

Significant Portion of Deferred Tax Assets and Deferred Tax Liabilities

Set forth below are the tax effects of temporary differences that give rise to a significant portion of the deferred tax assets and deferred tax liabilities.


	Year Ended December 31,
	2022		2021
Deferred tax assets
Net operating loss carryforwards	$	2,561	$	1,321
Tax credits	800		—
Investment in Partnership	7,866		7,909
Other, net	253		108
Subtotal	11,480		9,338
Valuation allowance	(11,480)		(9,338)
Total deferred tax assets	—		—

Deferred tax liabilities
Other, net	—		—
Total deferred tax liabilities	—		—
Net deferred tax (liabilities) assets	$	—	$	—

Noncontrolling Interests (Tables)

12 Months Ended

Dec. 31, 2022

Noncontrolling Interest [Abstract]

Summary Ownership of Viant Technology LLC

The following table summarizes the ownership of Viant Technology LLC.


	As of December 31, 2022			As of December 31, 2021
Owner	Units Owned	Ownership Percentage		Units Owned	Ownership Percentage
Viant Technology Inc.	14,643,798	23.7	%	13,704,638	22.5	%
Noncontrolling interests	47,082,260	76.3	%	47,107,130	77.5	%
Total	61,726,058	100.0	%	60,811,768	100.0	%

Summary of Effect of Changes in Ownership Interest in Viant Technology LLC on Equity

The following table presents the effect of changes in the Company’s ownership interest in Viant Technology LLC on the Company’s equity for the years indicated.


	Year Ended December 31,
	2022		2021
Net loss attributable to Viant Technology Inc.	$	(11,913)	$	(7,742)
Transfers to noncontrolling interests:
Decrease in the additional-paid-in-capital of Viant Technology Inc. resulting from ownership changes in Viant Technology LLC	(20,284)		(44,361)
Change from net loss attributable to Viant Technology Inc. and transfers to noncontrolling interests	$	(32,197)	$	(52,103)

Noncontrolling Interests - Additional Information (Details) - shares		12 Months Ended
	Feb. 12, 2021	Dec. 31, 2022
Class A Common Stock
Minority Interest [Line Items]
Exchange units for shares of common stock		1
Exchange of noncontrolling interests, shares		24,870
Class B Units
Minority Interest [Line Items]
Exchange of noncontrolling interests, shares		24,870
Class B Common Stock
Minority Interest [Line Items]
Exchange (cancellation) of shares		24,870
Class B Common Stock \| Viant Technology LLC
Minority Interest [Line Items]
Exchange (cancellation) of shares	48,935,559

Noncontrolling Interests - Summary Ownership of Viant Technology LLC (Details) - Viant Technology LLC - shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Minority Interest [Line Items]
Units owned (shares)	61,726,058	60,811,768
Ownership Percentage	100.00%	100.00%
Viant Technology Inc
Minority Interest [Line Items]
Units owned (shares)	14,643,798	13,704,638
Ownership percentage by Viant Technology Inc.	23.70%	22.50%
Noncontrolling Interests
Minority Interest [Line Items]
Units owned (shares)	47,082,260	47,107,130
Ownership percentage by non-controlling interests	76.30%	77.50%

Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2022

Payables and Accruals [Abstract]

Summary of Accrued Liabilities

The Company’s accrued liabilities consisted of the following:


	As of December 31,
	2022		2021
Accrued traffic acquisition costs	$	29,631	$	30,942
Other accrued liabilities	5,432		3,144
Total accrued liabilities	$	35,063	$	34,086

Goodwill and Intangible Assets, Net - Summary of Amortization Recorded in Consolidated Statements of Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Finite Lived Intangible Assets [Line Items]
Amortization	$ 1,119	$ 1,229	$ 1,229
Platform operations
Finite Lived Intangible Assets [Line Items]
Amortization	700	700	700
Sales and marketing
Finite Lived Intangible Assets [Line Items]
Amortization	0	0	0
Technology and development
Finite Lived Intangible Assets [Line Items]
Amortization	0	0	0
General and administrative
Finite Lived Intangible Assets [Line Items]
Amortization	$ 419	$ 529	$ 529

Leases

12 Months Ended

Dec. 31, 2022

Leases [Abstract]

Leases

At the beginning of fiscal 2022, the Company adopted new FASB guidance that requires lessees to record the present

value of operating lease payments as right-of-use assets and lease liabilities on the balance sheet. Refer to Note 2—Basis of Presentation and Summary of Significant Accounting Policies for additional information.

Lessee Arrangements

The Company has operating leases for its office space, which have remaining lease terms of up to eight years. The Company does not have finance leases.

Some of our leases include renewal options to extend the leases for up to five years and/or termination options to terminate the leases within one year. If it is reasonably certain that a renewal or termination option will be exercised, the exercise of the option is considered in calculating the term of the lease.

During the year ended December 31, 2022, the Company entered into an operating lease for office space in New York. In conjunction with this lease, PNC Bank, National Association (“PNC Bank”) issued a standby letter of credit for the amount of $0.4 million in favor of the lessor, to satisfy the security deposit of the leased property.

As of December 31, 2022, our operating leases had a weighted-average remaining lease term of approximately seven years and a weighted-average incremental borrowing rate of 3.5%.

Cash paid for amounts included in the measurement of operating lease liabilities was $2.3 million for the year ended December 31, 2022.

The components of lease expense were as follows:


	Year Ended December 31,
	2022
Operating lease cost	$	3,669
Short-term lease cost	1,399
Variable lease cost	124
	$	5,192

Future minimum lease payments as of December 31, 2022 were as follows:


	As of December 31,
Year	2022
2023	$	4,648
2024	4,385
2025	4,270
2026	4,257
2027	4,182
Thereafter	10,811
Total undiscounted future lease payments	32,553
Less: Imputed interest	(3,844)
Present value of operating lease liabilities	28,709
Less: Operating lease liabilities, current	(3,711)
Operating lease liabilities, noncurrent	$	24,998

Disclosures related to periods prior to the adoption of ASC 842

For the years ended December 31, 2021 and 2020, rent expense was $4.4 million and $4.2 million, respectively, recorded on a straight-line basis over the lease term. Deferred rent is the difference between cash payments for rent and the expense recorded. The current portion of deferred rent was $0.2 million as of December 31, 2021 and the non-current portion of deferred rent was $0.8 million as of December 31, 2021. These balances were reclassified upon the adoption of ASC842 and are included in the respective current and long-term portion of operating lease liabilities in the consolidated balance sheets.

Future minimum payments under the Company’s non-cancelable operating leases, primarily related to office space, as of December 31, 2021 are as follows:


	As of December 31,
Year	2021
2022	$	3,039
2023	3,953
2024	3,060
2025	2,991
2026	2,974
Thereafter	13,739
Total minimum payments	$	29,756

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash flows provided by (used in) operating activities:
Net income (loss)	$ (48,089)	$ (37,609)	$ 20,638
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	13,131	11,141	10,106
Stock/unit-based compensation	28,901	68,822	0
Provision for (recovery of) doubtful accounts	1,260	(107)	(584)
Loss on disposal of assets	588	188	61
Gain on extinguishment of debt	0	(6,110)	0
Amortization of operating lease assets	2,861	0	0
Changes in operating assets and liabilities:
Accounts receivable	7,821	(20,865)	(21,099)
Prepaid expenses and other assets	(3,642)	(750)	(252)
Accounts payable	4,215	3,404	8,995
Accrued liabilities	860	9,728	1,736
Accrued compensation	(3,118)	2,319	1,323
Deferred revenue	(6,428)	(1,786)	(1,694)
Operating lease liabilities	(1,561)	0	0
Other liabilities	(329)	290	(355)
Net cash provided by (used in) operating activities	(3,530)	28,665	18,875
Cash flows used in investing activities:
Purchases of property and equipment	(758)	(441)	(434)
Capitalized software development costs	(8,068)	(6,931)	(7,407)
Net cash used in investing activities	(8,826)	(7,372)	(7,841)
Cash flows provided by (used in) financing activities:
Proceeds from Paycheck Protection Program Loan	0	0	6,035
Proceeds from issuance of common stock, net of underwriting discounts	0	232,500	0
Payment of member tax distributions	(15)	(7,289)	(5,547)
Payment of member dividends	0	0	(5,000)
Payment of offering costs	0	(2,608)	(1,708)
Taxes paid related to net share settlement of equity awards	(2,036)	(15,045)	0
Repayment of revolving credit facility	(17,500)	0	0
Net cash provided by (used in) financing activities	(19,551)	207,558	(6,220)
Net increase (decrease) in cash and cash equivalents	(31,907)	228,851	4,814
Cash and cash equivalents at beginning of period	238,480	9,629	4,815
Cash and cash equivalents at end of period	206,573	238,480	9,629
Supplemental disclosure of cash flow information:
Cash paid for interest	238	660	1,065
Supplemental disclosure of non-cash investing and financing activities:
Accrued member tax distributions	0	5	6,878
Operating lease assets obtained in exchange for operating lease liabilities	8,307	0	0
Deferred offering costs recorded in accounts payable and accrued liabilities	0	0	529
Stock-based compensation included in capitalized software development costs	4,429	11,017	0
Capitalized assets financed by accounts payable and accrued liabilities	503	356	0
Noncash gain on extinguishment of debt related to Paycheck Protection Program loan	$ 0	$ 6,110	$ 0

Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Details) $ in Thousands			12 Months Ended
	Apr. 14, 2020 USD ($)	Jan. 01, 2020	Dec. 31, 2022 USD ($) impression reportingUnit Customer Supplier	Dec. 31, 2021 USD ($) Customer Supplier	Dec. 31, 2020 USD ($)	Jan. 01, 2022 USD ($)	Feb. 28, 2021 USD ($)
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Ad impressions \| impression			1,000
Advertising costs			$ 9,300	$ 4,100	$ 1,200
Share-based compensation arrangement by share-based payment award, initial public offering lock-up period				180 days
Vesting period				4 years
Nonqualified stock options, contractual terms				10 years
Number of reporting units \| reportingUnit			1
Operating lease assets			$ 26,441	$ 0		$ 21,000
Operating lease liabilities			$ 28,709			22,000
Deferred rent reclassified to operating leases						$ 1,000
Tax receivable agreement required to make payments to shareholders realized percentage of tax benefits in event that exchange of units to shares			85.00%
Tax receivable agreement expected remaining tax benefit percentage			15.00%
Minimum
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Invoice payment terms			30 days
Maximum
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Invoice payment terms			60 days
Incentive Units
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Vesting period				4 years
Phantom Unit Plan
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Vesting period		4 years		4 years
SOFR
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Tax receivable agreement interest payments accrued basis spread rate			5.00%
Viant Technology LLC
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Percentage of interest held			23.70%
Credit Concentration Risk \| Accounts Receivable
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Number of customer \| Customer			0	2
Credit Concentration Risk \| Customer One \| Accounts Receivable
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage				13.20%
Credit Concentration Risk \| Customer Two \| Accounts Receivable
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage				12.30%
Supplier Concentration Risk \| Accounts Payable and Accrued Liabilities
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Number of supplier \| Supplier			1	1
Supplier Concentration Risk \| Accounts Payable and Accrued Liabilities \| Supplier One
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage			24.60%	16.80%
Paycheck Protection Program Loan
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Proceeds from issuance of debt	$ 6,000
IPO
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Deferred offering costs capitalized					$ 2,200		$ 4,300

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Revenue	$ 197,168	$ 224,127	$ 165,251
Operating expenses:
Platform operations	116,725	129,604	88,260
Sales and marketing	63,957	65,042	28,887
Technology and development	21,294	25,372	8,698
General and administrative	44,452	46,904	17,639
Total operating expenses	246,428	266,922	143,484
Income (loss) from operations	(49,260)	(42,795)	21,767
Interest expense (income), net	(1,481)	864	1,038
Other expense	310	60	91
Gain on extinguishment of debt	0	(6,110)	0
Total other expense (income), net	(1,171)	(5,186)	1,129
Net income (loss)	(48,089)	(37,609)	20,638
Less: Net loss attributable to noncontrolling interests	(36,176)	(29,867)	$ 0
Net loss attributable to Viant Technology Inc.	$ (11,913)	$ (7,742)
Earnings (loss) per Class A common stock/unit:
Basic (dollars per share)	$ (0.84)	$ (0.63)	$ 20.64
Diluted (dollars per share)	$ (0.84)	$ (0.63)	$ 20.64
Weighted-average Class A common stock/units outstanding:
Basic (shares)	14,185,000	12,364,000	400,000
Diluted (shares)	14,185,000	12,364,000	1,000,000

Guarantees and Indemnities	12 Months Ended
Guarantees and Indemnities	Dec. 31, 2022
Guarantees And Indemnities [Abstract]
Guarantees and Indemnities	Guarantees and IndemnitiesThe Company has made no significant contractual guarantees for the benefit of third parties. However, in the ordinary course of business, the Company may provide indemnifications of varying scope and terms to customers, vendors, lessors, business partners and other parties with respect to certain matters, including, but not limited to, losses arising out of breach of such agreements, services to be provided by the Company or from intellectual property infringement claims made by third parties. In addition, the Company has entered into indemnification agreements with directors and certain officers and employees that will require the Company, among other things, to indemnify them against certain liabilities that may arise by reason of their status or service as directors, officers or employees. The Company is not aware of indemnification claims that could have a material effect on the Company’s consolidated financial statements. Accordingly, no amounts for any obligation have been recorded as of December 31, 2022 and 2021.

Revenue - Summary of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disaggregation Of Revenue [Line Items]
Revenue	$ 197,168	$ 224,127	$ 165,251
Over time
Disaggregation Of Revenue [Line Items]
Revenue	800	3,880	4,612
Point in time
Disaggregation Of Revenue [Line Items]
Revenue	$ 196,368	$ 220,247	$ 160,639

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8906-108599

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 40
-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9031-108599

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9038-108599

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8933-108599

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8933-108599

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130543-203045

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8736-108599

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8736-108599

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 42
-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9054-108599

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130545-203045

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 924
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 11.L)
-URI https://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856

+ Details

Basis of Presentation and Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2022

Basis Of Presentation And Summary Of Significant Accounting Policies [Abstract]

Basis of Presentation and Summary of Significant Accounting Policies

Basis of Presentation and Principles of Consolidation

The accompanying consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) and include the operations of the Company, Viant Technology LLC and its wholly owned subsidiaries. Viant Technology LLC is considered a variable interest entity (“VIE”). The Company is the primary beneficiary and sole managing member of Viant Technology LLC and has decision making authority that significantly affects the economic performance of the entity. As a result, the Company consolidates Viant Technology LLC. All intercompany balances and transactions have been eliminated in consolidation.

Viant Technology LLC has been determined to be the predecessor for accounting purposes and, accordingly, the consolidated financial statements for periods prior to the IPO and the related Reorganization Transactions have been adjusted to combine the previously separate entities for presentation purposes. Amounts for the period prior to February 12, 2021 presented in the consolidated financial statements and notes to consolidated financial statements herein represent the historical operations of Viant Technology LLC. The amounts as of December 31, 2022 and December 31, 2021 and the operations since February 12, 2021 reflect the consolidated operations of the Company.

Management believes that the accompanying consolidated financial statements reflect the adjustments necessary for the fair statement of its consolidated balance sheets as of December 31, 2022 and 2021, statements of operations for the years ended December 31, 2022, 2021 and 2020, and cash flows for the years ended December 31, 2022, 2021 and 2020.

Use of Estimates

The preparation of our consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. On an ongoing basis, management evaluates its estimates, primarily those related to revenue recognition, stock-based compensation, income taxes, allowances for doubtful accounts, the useful lives of capitalized software development costs and other property, equipment and software and assumptions used in the impairment analyses of long-lived assets and goodwill. These estimates are based on historical data and experience, as well as various other factors that management believes to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying amount of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.

As of December 31, 2022, the impact of widespread macroeconomic and geopolitical uncertainties, including the continuing impact of COVID-19, labor shortages, inflation and monetary supply shifts, rising interest rates, tightening of credit markets, recession risks, and potential disruptions from the Russia-Ukraine conflict, on our business continues to evolve. As a result, many of our estimates and assumptions consider macroeconomic and geopolitical factors in the market, which require increased judgment and carry a higher degree of variability and volatility. As events continue to evolve and additional information becomes available on the potential impact on our business of global economic and business events, our estimates may change materially in future periods.

Comprehensive Income (Loss)

For the periods presented, net income (loss) is equal to comprehensive income (loss).

Segment Information

The Company has a single reportable operating segment which operates an enterprise technology platform, Adelphic, that enables marketers and their advertising agencies to automate and centralize the planning, buying and measurement of their video, audio and display ads across all channels, including desktop, mobile, connected TV, linear TV, in-game, streaming audio and digital billboards in the United States. In reaching this conclusion, management considers the definition of the chief operating decision maker (“CODM”), how the business is defined by the CODM, the nature of the information provided to the CODM and how that information is used to make operating decisions, allocate resources and assess performance. The Company’s CODM is comprised of the chief executive officer and chief operating officer. The results of operations provided to and analyzed by the CODM are at the consolidated level and accordingly, key resource decisions and assessment of performance are performed at the consolidated level. The Company assesses its determination of operating segments at least annually.

Revenue Recognition

The Company generates its revenue by providing marketers and advertising agencies with the ability to plan, buy and measure their digital advertising campaigns using its people-based DSP, Adelphic. Our platform enables marketers to reach their target audience across desktop, mobile, connected TV, linear TV, in-game, streaming audio and digital billboards.

The Company applies a five-step approach as defined in Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 606, Revenue from Contracts with Customers (“ASC 606”), in determining the amount and timing of revenue to be recognized:

•Identification of a contract with a customer;

•Identification of the performance obligations in the contract;

•Determination of the transaction price;

•Allocation of the transaction price to the performance obligations in the contract; and

•Recognition of revenue when or as the performance obligations are satisfied.

We make our platform available through different pricing options to tailor to multiple customer types and customer needs. These options consist of a percentage of spend option and a fixed cost per mille (“CPM”) pricing option. CPM refers to a payment option in which customers pay a price for every 1,000 impressions an ad receives. We generate revenue when our platform is used on a self-service basis by charging a platform fee that is a percentage of spend as well as fees for additional features such as data and advanced reporting. We also offer our customers the ability to use our services to aid in data management, media execution and advanced reporting. When customers utilize our services, we generate revenue by charging a (1) separate service fee that represents a percentage of spend in addition to the platform fee; or (2) a fixed CPM that is inclusive of media, other direct costs and services.

We maintain agreements with our customers in the form of master service agreements (“MSA”) in connection with the percentage of spend pricing option, as well as instances where we charge our customers a flat monthly fee for services in connection with data management and advanced reporting. We maintain insertion orders (“IO”) in connection with the fixed CPM pricing option, which set out the terms of the relationship and use of our platform. The nature of our performance obligations is to enable customers to plan, buy and measure advertising campaigns using our platform and provide campaign execution services as requested.

For the percentage of spend pricing option, we typically bill customers a platform fee, and in certain instances an additional service fee, which is based on a specified percentage of the customer’s purchases through the platform as well as fees for additional features such as data and advanced reporting, plus the cost of TAC, as defined below. We recognize revenue at the point in time when a purchase by the customer occurs through our platform.

The determination of whether revenue for the percentage of spend pricing option should be reported on a gross or net basis is based on an assessment of whether we are acting as the principal or an agent in the transaction. In determining whether we are acting as the principal or an agent, we follow the accounting guidance for principal-agent considerations. Making such determinations involves judgment and is based on an evaluation of the terms of each arrangement, none of which are considered presumptive or determinative.

In instances discussed above related to the percentage of spend pricing option, we typically act as an agent because we arrange for the transfer of such costs from the supplier to the customer through the use of our platform and do not control such features prior to transfer to the customer. We do not have primary responsibility for meeting customer specifications and do not have discretion in establishing the price of TAC related to this pricing option. As we act as the agent in these arrangements, we report revenue on a net basis. In certain arrangements, we act as a principal in percentage of spend arrangements because (i) we control the advertising inventory before it is transferred to our clients; (ii) we bear sole responsibility for fulfillment of the advertising promise and inventory risks and (iii) we have full discretion in establishing prices. As we act as the principal in these arrangements, we report revenue and the related costs incurred on a gross basis.

For the fixed CPM pricing option, we typically bill customers a fixed CPM price based on advertising impressions delivered through the platform and recognize revenue at the point in time when the advertising impressions are delivered. In certain cases, we also provide third party data segments and measurement reporting, which are recognized at the point in time they are delivered to the customer. We have the primary responsibility for meeting customer specifications and have discretion in establishing the price of TAC related to this pricing option. As we act as the principal in these arrangements, we report revenue and the related costs incurred on a gross basis.

The Company invoices its customers on a monthly basis for all pricing options. Invoice payment terms, negotiated on a customer-by-customer basis, are typically 30 to 60 days. Advertising agency customers typically have sequential liability terms, which means payments are not due to the Company from its advertising agency customer until the advertising agency customer has received payment from its customer, the advertiser.

There are no contract assets recorded on the consolidated balance sheets because the Company’s right to any unbilled consideration for performance obligations satisfied is only conditional upon the passage of time. Contract liabilities, or deferred revenue, are recorded for amounts that are collected in advance of the satisfaction of performance obligations. These liabilities are classified as current if the respective performance obligations are anticipated to be satisfied during the succeeding 12-month period per the terms of the contract, and the remaining portion is recorded as non-current deferred revenue in the consolidated balance sheets.

ASC 606 provides various optional practical expedients. The Company elected the use of the practical expedient relating to the disclosure of remaining performance obligations within a contract and will not disclose remaining performance obligations for contracts with an original expected duration of one year or less.

Operating Expenses

We classify our operating expenses into the following four categories. Each expense category includes overhead such as rent and occupancy charges, which is allocated based on headcount.

Platform Operations. Platform operations expense represents our cost of revenues, which consists of TAC, hosting costs, personnel costs, depreciation of capitalized software development costs, customer support costs and allocated overhead. TAC recorded in platform operations consists of amounts incurred and payable to suppliers for costs associated with our fixed CPM pricing option. Personnel costs within platform operations include salaries, bonuses, stock/unit-based compensation and employee benefit costs primarily attributable to personnel who directly support our platform.

Sales and Marketing. Sales and marketing expense consists primarily of personnel costs, including salaries, bonuses, stock/unit-based compensation, employee benefit costs and commissions for our sales personnel. Sales and marketing expense also includes costs for market development programs, advertising, promotional and other marketing activities and allocated overhead. Commissions are expensed as incurred.

The Company incurred advertising costs of $9.3 million, $4.1 million, and $1.2 million for the years ended December 31, 2022, 2021 and 2020, respectively, related to the promotion of the Company, its brands, products and services to potential customers. Advertising costs are expensed as incurred and recorded in sales and marketing expense within the consolidated statements of operations.

Technology and Development. Technology and development expense consists primarily of personnel costs, including salaries, bonuses, stock/unit-based compensation and employee benefit costs associated with the ongoing development and maintenance of our platform and allocated overhead. Technology and development costs are expensed as incurred, except to the extent that such costs are associated with software development that qualifies for capitalization, which are then recorded as capitalized software development costs included in "Property, equipment, and software, net", on the consolidated balance sheets. We record depreciation for capitalized software not related to our platform within technology and development expense.

General and Administrative. General and administrative expense consists primarily of personnel costs, including salaries, bonuses, stock/unit-based compensation and employee benefit costs associated with our executive, accounting, finance, legal, human resources, and other administrative personnel. Additionally, this includes accounting, legal and other professional services fees, insurance expense, bad debt expense and allocated overhead.

Stock-Based Compensation

Stock-based compensation relates to equity awards granted under the Company’s 2021 LTIP, which is measured and recognized in the consolidated financial statements based on the fair value of the equity awards granted. Since inception of the 2021 LTIP, the Company has only granted restricted stock units (“RSUs”) and nonqualified stock options. The fair value of RSUs is calculated using the closing market price of the Company’s Class A common stock on the date of grant. The fair value of nonqualified stock options is estimated using the Black Scholes option pricing model. The Black Scholes option pricing model is impacted by the fair value of the Company’s Class A common stock, as well as changes in certain assumptions, including but not limited to, the expected Class A common stock price volatility over the term of the nonqualified stock options, the expected term of the nonqualified stock options, the risk-free interest rate, and the expected dividend yield. The Company records compensation for all equity awards under the 2021 LTIP under the straight-line attribution method over the requisite service period. The Company has elected the accounting policy to account for forfeitures within stock-based compensation as they occur.

A portion of RSUs granted during the year ended December 31, 2021 to certain employees and board members, pursuant to the 2021 LTIP, vested upon expiration of the 180 day IPO lock-up period during the fiscal year ended December 31, 2021. The remainder of RSUs and nonqualified stock options granted to employees will vest through the applicable vesting dates. RSUs generally vest over a period of four years, contingent upon employment on the vesting date. RSUs awarded to board members upon their appointment will vest on the third anniversary of the grant date and RSUs awarded to board members annually will vest on the first anniversary of the grant date. Nonqualified stock options will generally vest based on four years of continuous service and have 10 year contractual terms.

Unit-Based Compensation

The Company adopted the Limited Liability Company Agreement (the “Viant Technology LLC Agreement”) on October 4, 2016, under which it issued common unit awards, subject to vesting and other terms, to certain executives of the Company and to Viant Technology Equity Plan LLC, which issued incentive units in the form of profit interests to certain employees of the Company.

The Company records compensation for all common unit awards and incentive units granted to employees of the Company, which is measured and recognized on a graded-vesting attribution basis over the requisite service period based on the fair value of the awards at the grant date. The Company has elected the accounting policy to account for forfeitures within unit-based compensation as they occur.

During the years ended December 31, 2020 and 2019, the Company was privately held with no active public market for our common units. Therefore, in determining the fair value of equity-based awards, the Company utilized valuations prepared by an independent third party. The independent third party performed the valuations in a manner consistent with the American Institute of Certified Public Accountants Practice Aid, Valuation of Privately-Held Company Equity Securities Issued as Compensation (“Practice Aid”). In conducting the valuations, the Company considered all objective and subjective factors that it believed to be relevant in the valuation conducted, including management’s best estimate of our business condition, prospects and operating performance at the valuation dates. There are significant judgments and estimates inherent in these valuations. These judgments and estimates include assumptions regarding our future operating performance, industry growth, average selling price, and the timing of a potential initial public offering or other liquidity event.

The Company determined the fair value of equity awards using a combination of the market and income approach. The market approach and the income approach are both acceptable valuation methods in accordance with the Practice Aid. There are two general methodologies under the market approach: (i) guideline public company method, and (ii) guideline merged and acquired company method. Both methods generate a marketable equity fair value indication using market-based information available to market participants. Under the income approach, the enterprise value can be estimated using the discounted cash flow method, which involves estimating the future cash flows of a business for a discrete period and discounting them to their present value.

As provided in the Practice Aid, there are several approaches for allocating enterprise value of a privately held company to the outstanding equity of the Company. The Company selected the Option Pricing Model (“OPM”) which treats common equity and preferred equity as call options on the enterprise’s value. The exercise prices associated with these call options vary according to the liquidation preference of the preferred equity, the preferred equity conversion price, the exercise prices of common equity options and other features of a company’s equity capital structure.

Earnings (Loss) Per Share

Basic earnings (loss) per share is calculated by dividing the earnings (loss) attributable to Class A common stockholders by the number of weighted-average shares of Class A common stock outstanding. The Company’s RSUs, nonqualified stock options and shares of Class B common stock do not share in the earnings or losses of the Company and are therefore not participating securities. As such, separate presentation of basic and diluted earnings (loss) per share of RSUs, nonqualified stock options and Class B common stock under the two-class method has not been presented.

Diluted earnings per share adjusts the basic earnings (loss) per share calculation for the potential dilutive impact of common shares such as equity awards using the treasury-stock method. Diluted earnings per share considers the impact of potentially dilutive securities except in periods in which there is a loss because the inclusion of the potential common shares would have an anti-dilutive effect. Shares of our Class B common stock, RSUs, and nonqualified stock options are considered potentially dilutive shares of Class A common stock; however, related amounts have been excluded from the computation of diluted earnings per share of Class A common stock because the effect would have been anti-dilutive under the if-converted method and treasury-stock method.

Earnings (Loss) Per Unit

Basic earnings (loss) per unit is calculated by dividing the earnings (loss) attributable to common unitholders by the number of weighted-average common units outstanding. The Company applies the two-class method to allocate earnings between common and convertible preferred units.

Diluted earnings per unit adjusts the basic earnings (loss) per unit attributable to common unitholders and the weighted-average number of units of common units outstanding for the potential dilutive impact of common units, using the treasury-stock method, and convertible preferred units using the if-converted method. Diluted earnings per unit considers the impact of potentially dilutive securities except in periods in which there is a loss because the inclusion of the potential common units would have an anti-dilutive effect.

Cash and Cash Equivalents

The Company considers cash in bank accounts, money market funds, and highly liquid debt instruments with an original maturity of less than 90 days to be cash and cash equivalents. Due to the short-term nature of cash and cash equivalents the carrying amounts approximate fair value.

Accounts Receivable, Net of Allowances

Accounts receivable are recorded at the invoiced amount, net of an allowance for doubtful accounts, and are unsecured and do not bear interest. The Company performs credit evaluations of its customers and certain advertisers when the Company’s agreements with its customers contain sequential liability terms that provide that the customer payments are not due to the Company until the customer has received payment from its customers (advertisers). The allowance for doubtful accounts is based on the best estimate of the amount of probable credit losses in existing accounts receivable. The allowance for doubtful accounts is determined based on historical collection experience and the review in each period of the status of the then-outstanding accounts receivable, while taking into consideration current customer information, subsequent collection history and other relevant data. Account balances are charged off against the allowance when the Company believes it is probable the receivable will not be recovered. Recoveries of accounts receivable previously written off are recorded when received.

The following table presents changes in the allowance for doubtful accounts:


	Year Ended December 31,
	2022		2021
Beginning balance	$	54	$	335
Provision for (recovery of) doubtful accounts	1,260		(107)
Write-offs, net of recoveries	(299)		(174)
Ending balance	$	1,015	$	54

Deferred Offering Costs

Deferred offering costs consisted primarily of accounting, legal, and other costs related to our IPO. As of December 31, 2020, the Company capitalized $2.2 million of deferred offering costs within prepaid expenses and other current assets in the consolidated balance sheet. Upon consummation of the IPO in February 2021, total deferred offering costs of $4.3 million were reclassified as additional paid-in capital within stockholders’ equity and recorded against the proceeds from the IPO.

Property, Equipment and Software, Net


			Years
Computer equipment			3-5
Purchased software			3
Capitalized software development costs			3
Furniture, fixtures and office equipment			10
Leasehold improvements			*

*Leasehold improvements are depreciated on a straight-line basis over the term of the lease, or the useful life of the assets, whichever is shorter.

Repair and maintenance costs are charged to expense as incurred, while replacements and improvements are capitalized. When assets are retired or otherwise disposed of, the cost and related accumulated depreciation are removed from the accounts and any resulting gain or loss is recorded in other expense (income), net within the consolidated statements of operations.

Capitalized Software Development Costs

The Company capitalizes certain costs associated with creating and enhancing internally developed software related to the Company’s technology infrastructure and such costs are recorded within property, equipment and software, net. These costs include personnel and related employee benefit expenses for employees who are directly associated with and who devote time to software

development projects. Software development costs that do not qualify for capitalization are expensed as incurred and recorded in technology and development expense in the consolidated statements of operations.

Software development activities typically consist of three stages: (1) the planning phase; (2) the application and infrastructure development stage; and (3) the post implementation stage. Costs incurred in the planning and post implementation phases, including costs associated with training and repairs and maintenance of the developed technologies, are expensed as incurred. The Company capitalizes costs associated with software developed when the preliminary project stage is completed, management implicitly or explicitly authorizes and commits to funding the project and it is probable that the project will be completed and perform as intended. Costs incurred in the application and infrastructure development phases, including significant enhancements and upgrades, are capitalized. Capitalization ends once a project is substantially complete and the software is ready for its intended purpose. Software development costs are depreciated using a straight-line method over the estimated useful life, commencing when the software is ready for its intended use. The straight-line recognition method approximates the manner in which the expected benefit will be derived.

Capitalized Interest

The Company capitalizes interest on borrowings related to eligible capital expenditures including development costs related to internal use software which is recorded within property, equipment and software, net. Capitalized interest is added to the cost of the qualified assets and depreciated over the estimated useful lives of the assets.

Impairment of Long-Lived Assets

Long-lived assets consist of property, equipment and software and intangible assets with estimable useful lives subject to depreciation and amortization. The Company reviews long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset or asset group may not be recoverable. Recoverability of an asset or asset group to be held and used is measured by a comparison of the carrying amount of an asset or asset group to the estimated undiscounted future cash flows expected to be generated by the asset or asset group. If the carrying amount of the asset or asset group exceeds its estimated future cash flows, an impairment charge is recognized in the amount by which the carrying amount of the asset or asset group exceeds the fair value of the asset or asset group.

Goodwill

Goodwill is tested at least annually for impairment as of the first day of the fourth fiscal quarter, or more frequently if indicators of impairment exist during the fiscal year. Events or circumstances which could trigger an impairment review include a significant adverse change in legal factors or in the business climate, loss of key customers, an adverse action or assessment by a regulator, unanticipated competition, a loss of key personnel, significant changes in the manner of the Company’s use of the acquired assets or the strategy for the Company’s overall business, significant negative industry or economic trends, or significant underperformance relative to expected historical or projected future results of operations. The Company assesses its conclusion regarding reporting units in conjunction with its annual goodwill impairment test and has determined that it has one reporting unit for the purposes of allocating and testing goodwill.

When testing goodwill for impairment, the Company first performs a qualitative assessment. If the Company determines it is more likely than not that a reporting unit’s fair value is less than its carrying amount, then a one-step impairment test is required. If the Company determines it is not more likely than not a reporting unit’s fair value is less than its carrying amount, then no further analysis is necessary. To identify whether a potential impairment exists, the Company compares the estimated fair value of the reporting unit with its carrying amount, including goodwill. If the estimated fair value of the reporting unit exceeds its carrying amount, goodwill is not considered to be impaired. If, however, the fair value of the reporting unit is less than its carrying amount, then such balance would be recorded as an impairment loss. Any impairment loss is limited to the carrying amount of goodwill within the entity.

Paycheck Protection Program Loan

On April 14, 2020, the Company received the proceeds from a loan in the amount of approximately $6.0 million (the “PPP Loan”) from PNC Bank, as lender, pursuant to the Paycheck Protection Program (“PPP”) of the Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”). The Company accounted for the PPP Loan as a financial liability in accordance with ASC Topic 470, Debt. Accordingly, the PPP Loan was recognized within long-term debt and current portion of long-term debt in the Company’s consolidated balance sheet and the related accrued interest was included within accrued liabilities in the Company’s consolidated balance sheet as of December 31, 2020. In June 2021, the Company received a notice of forgiveness of the PPP Loan in whole, including all accrued unpaid interest. The forgiveness of the loan is recognized within "Gain on extinguishment of debt" on the consolidated statement of operations for the year ended December 31, 2021. Refer to Note 8—Revolving Credit Facility and PPP Loan for additional information.

Fair Value of Financial Instruments

The framework for measuring fair value and related disclosure requirements about fair value measurements are provided in ASC 820, Fair Value Measurement (“ASC 820”). This pronouncement defines fair value as the price that would be received to sell an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The fair value hierarchy prescribed by ASC 820 contains three input levels as follows:

•Level 1: Unadjusted quoted prices in active markets for identical assets or liabilities accessible to the reporting entity at the measurement date.

•Level 2: Other than quoted prices included in Level 1 inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the asset or liability.

•Level 3: Unobservable inputs for the asset or liability used to measure fair value to the extent that observable inputs are not available, thereby allowing for situations in which there is little, if any, market activity for the asset or liability at the measurement date.

The carrying amounts of the Company’s cash and cash equivalents, accounts receivable, accounts payable, accrued compensation and accrued liabilities approximate fair value due to the short-term nature of these instruments.

Financial Instruments Not Recorded at Fair Value on a Recurring Basis

Certain financial instruments, including debt, are not measured at fair value on a recurring basis in the consolidated balance sheets. The fair value of debt was estimated using primarily level 2 inputs including quoted market prices or discounted cash flow analyses, based on estimated incremental borrowing rates for similar types of borrowing arrangements. As of December 31, 2022, there was no outstanding balance under the Loan Agreement.

Assets and Liabilities Recorded at Fair Value on a Non-Recurring Basis

Certain assets and liabilities, including goodwill and intangible assets, are subject to measurement at fair value on a non-recurring basis if there are indicators of impairment or if they are deemed to be impaired as a result of an impairment review.

Leases

At the beginning of fiscal 2022, the Company adopted new lease accounting guidance issued by the FASB. The most significant change requires lessees to record the present value of operating lease payments as operating lease assets and lease liabilities on its balance sheet and disclose key information about leasing arrangements.

We adopted the new guidance using the modified retrospective method at the beginning of fiscal 2022. As such, the consolidated balance sheets for prior periods are not comparable to our fiscal 2022 periods. The Company adopted the new guidance by applying the package of practical expedients permitted under the transition guidance, which allowed the Company to carry forward its original assessment of whether:

•our existing arrangements are or contain leases;

•our existing arrangements are operating or finance leases; and

•to capitalize initial direct costs.

The adoption of the new guidance resulted in the recognition of operating lease assets of approximately $21.0 million and operating lease liabilities of approximately $22.0 million, which were measured by the present value of the remaining minimum lease payments. In accordance with the guidance, the Company elected the practical expedient to exclude leases with a term of less than one year from the measurement of operating lease assets and lease liabilities. The Company also elected the practical expedient that allows lessees the option to account for lease and non-lease components together as a single component for all real estate classes of underlying assets. At adoption, in the consolidated balance sheet, we also reclassified deferred rent of approximately $1.0 million for operating leases at the end of the fiscal year ended December 31, 2021 from other current liabilities (current portion) and other long-term liabilities (non-current portion) to current portion of operating lease liabilities and long-term portion of operating lease liabilities, respectively. The impact on the Company’s consolidated statements of operations and cash flows was not material.

The present value of the lease payments was calculated using the Company’s incremental borrowing rate applicable to the lease, which is determined by estimating what it would cost the Company to borrow a collateralized amount equal to the total lease payments over the lease term based on the contractual terms of the lease and the location of the leased asset.

We determine whether an arrangement is a lease at the contract inception date. Our leases may require us to make fixed rental payments or variable lease payments, which are based on a variety of factors including property values, tax and utility rates, property

services fees, and other factors. Since these costs are variable in nature, they are excluded from the measurement of the reported operating lease assets and liabilities and are expensed as incurred. The Company records rent expense for operating leases, some of which have escalating rent payments, on a straight-line basis over the lease term.

Concentration of Risk

Financial instruments that potentially subject the Company to concentration of risk consist principally of cash and cash equivalents and accounts receivable. The Company maintains its cash with financial institutions and its cash levels exceed the Federal Deposit Insurance Corporation (FDIC) federally insured limits. Accounts receivable include amounts due from customers with principal operations primarily in the United States.

As of December 31, 2022, no individual customers accounted for more than 10.0% of consolidated accounts receivable. As of December 31, 2021, two individual customers accounted for 13.2% and 12.3% of consolidated accounts receivable. For the years ended December 31, 2022, 2021, and 2020, no individual customers accounted for more than 10.0% of consolidated revenue.

The following table provides the Company’s concentrations of credit risk with respect to advertising agency holding companies as a percentage of the Company’s total revenues.


	Year Ended December 31,
	2022		2021
Advertising Agency Holding Company
A	<10.0 %		15.5	%
B	13.5	%	14.2	%

As of December 31, 2022, one supplier accounted for 24.6% of consolidated accounts payable and accrued liabilities. As of December 31, 2021, one supplier accounted for 16.8% of consolidated accounts payable and accrued liabilities..

Related Party Relationships

Capital V LLC (formerly Four Brothers 2 LLC), the holder of Class B common stock as of December 31, 2022, is controlled by the Company’s co-founders, Tim Vanderhook and Chris Vanderhook, and therefore is considered a related party. Refer to Note 9—Convertible Preferred Units and Common Units and Note 16—Related Parties for additional information.

Income Taxes

The Company is the managing member of Viant Technology LLC and, as a result, consolidates the financial results of Viant Technology LLC in the consolidated financial statements. Viant Technology LLC is a pass-through entity for U.S. federal and most applicable state and local income tax purposes following a corporate reorganization effected in connection with our initial public offering. As an entity classified as a partnership for tax purposes, Viant Technology LLC is not subject to U.S. federal and certain state and local income taxes. Any taxable income or loss generated by Viant Technology LLC is passed through to and included in the taxable income or loss of its members, including us. The Company is taxed as a corporation and pays corporate federal, state and local taxes with respect to income allocated from Viant Technology LLC, based on Viant Technology Inc.'s 23.7% interest in Viant Technology LLC.

The Company accounts for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities (“DTAs” and “DTLs”) for the expected future tax consequences of events that have been included in the financial statements. Under this method, we determine DTAs and DTLs on the basis of the differences between the financial statement and tax bases of assets and liabilities by using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on DTAs and DTLs is recognized in income in the period that includes the enactment date. We recognize DTAs to the extent that we believe that these assets are more likely than not to be realized. In making such a determination, we consider all available positive and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies, carryback potential if permitted under the tax law and results of recent operations. If we determine that we would be able to realize our DTAs in the future in excess of their net recorded amount, we would make an adjustment to the DTA valuation allowance, which would reduce the provision for income taxes.

The Company records uncertain tax positions in accordance with ASC 740 on the basis of a two-step process in which (1) we determine whether it is more likely than not that the tax positions will be sustained on the basis of the technical merits of the position and (2) for those tax positions that meet the more-likely-than-not recognition threshold, we recognize the largest amount of tax benefit that is more than 50 percent likely to be realized upon ultimate settlement with the related tax authority.

Tax Receivable Agreement

The Company expects to obtain an increase in its share of tax basis in the net assets of Viant Technology LLC when Class B units are exchanged by the holders of Class B units for shares of Class A common stock of the Company and upon other qualifying transactions. Each change in outstanding shares of Class A common stock of the Company results in a corresponding increase or decrease in the Company's ownership of Class A units of Viant Technology LLC. The Company intends to treat any exchanges of Class B units as direct purchases of LLC interests for U.S. federal income tax purposes. These increases in tax basis may reduce the amounts that the Company would otherwise pay in the future to various taxing authorities. They may also decrease gains (or increase losses) on future dispositions of certain capital assets to the extent tax basis is allocated to those capital assets.

In connection with the IPO, the Company entered into a Tax Receivable Agreement (“TRA”) with Viant Technology LLC and the holders of Class B units of Viant Technology LLC. In the event that such parties exchange any or all of their Class B units for Class A common stock, the TRA requires the Company to make payments to such holders for 85% of the tax benefits realized, or in some cases deemed to be realized, by the Company by such exchange as a result of (i) increases in the Company’s tax basis of its ownership interest in the net assets of Viant Technology LLC resulting from any redemptions or exchanges of noncontrolling interest, (ii) tax basis increases attributable to payments made under the TRA and (iii) deductions attributable to imputed interest pursuant to the TRA (the “TRA Payments”). The annual tax benefits are computed by calculating the income taxes due, including such tax benefits and the income taxes due without such benefits. The Company expects to benefit from the remaining 15% of any tax benefits that it may actually realize. The TRA Payments are not conditioned upon any continued ownership interest in Viant Technology LLC or the Company. To the extent that the Company is unable to timely make payments under the TRA for any reason, such payments generally will be deferred and will accrue interest until paid.

The timing and amount of aggregate payments due under the TRA may vary based on a number of factors, including the amount and timing of the taxable income the Company generates each year and the tax rate then applicable. The Company calculates the liability under the TRA using a TRA model, which includes an assumption related to the fair market value of assets. The payment obligations under the TRA are obligations of the Company and not of Viant Technology LLC. Payments are generally due under the TRA within a specified period of time following the filing of the Company’s tax return for the taxable year with respect to which the payment obligation arises, although interest on such payments will begin to accrue at a rate of the Secured Overnight Financing Rate plus 500 basis points from the due date (without extensions) of such tax return.

The TRA provides that if (i) certain mergers, asset sales, other forms of business combinations, or other changes of control were to occur, (ii) there is a material breach of any material obligations under the TRA; or (iii) the Company elects an early termination of the TRA, then the TRA will terminate and the Company's obligations, or the Company's successor’s obligations, under the TRA will accelerate and become due and payable, based on certain assumptions, including an assumption that the Company would have sufficient taxable income to fully utilize all potential future tax benefits that are subject to the TRA and that any Class B units that have not been exchanged are deemed exchanged for the fair market value of the Company's Class A common stock at the time of termination.

Treasury Stock

We account for treasury stock under the cost method. When treasury stock is re-issued at a price higher than its cost, the difference is recorded as a component of additional paid-in-capital in our consolidated balance sheets. When treasury stock is re-issued at a price lower than its cost, the difference is recorded as a component of additional paid-in-capital to the extent that there are previously recorded gains to offset the losses. If there are no treasury stock gains in additional paid-in-capital, the losses upon re-issuance of treasury stock are recorded as an increase in accumulated deficit in our consolidated balance sheets.

JOBS Act Election as an Emerging Growth Company

On April 5, 2012, the Jumpstart Our Business Startups Act (the “JOBS Act”) was signed into law. The JOBS Act contains provisions that, among other things, reduce certain reporting requirements for qualifying public companies. As an “emerging growth company,” the Company may, under Section 7(a)(2)(B) of the Securities Act of 1933, as amended (the “Securities Act”), delay adoption of new or revised accounting standards applicable to public companies until such standards would otherwise apply to private companies. An “emerging growth company” is one with less than $1.235 billion in annual sales, has less than $700 million in market value of its shares of common stock held by non-affiliates and issues less than $1 billion of non-convertible debt over a three-year period. The Company may take advantage of this extended transition period until the first to occur of the date that it (i) is no longer an “emerging growth company” or (ii) affirmatively and irrevocably opts out of this extended transition period.

The Company has elected to take advantage of the benefits of this extended transition period. Until the date that the Company is no longer an “emerging growth company” or affirmatively and irrevocably opts out of the exemption provided by Securities Act Section 7(a)(2)(B), upon issuance of a new or revised accounting standard that applies to its consolidated financial statements and that has a different effective date for public and private companies, the Company will disclose the date on which it will adopt the recently issued accounting standard.

Recently Issued Accounting Pronouncements

Financial Instruments—Credit Losses

In June 2016, the FASB issued Accounting Standards Update (“ASU”) No. 2016-13, Financial Instruments—Credit Losses (Topic 326). ASU 2016-13 revises the impairment model to utilize an expected loss methodology in place of the currently used incurred loss methodology, which will result in more timely recognition of losses on financial instruments. The guidance is effective for the Company’s annual reporting period beginning after December 15, 2022 and interim reporting periods within that annual reporting period. The Company adopted this ASU effective January 1, 2023. The adoption of this ASU did not have a material impact on the Company’s consolidated financial statements.

Recently Adopted Accounting Pronouncements

Leases

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842), which requires an entity to recognize right-of-use assets and lease liabilities on its balance sheet and disclose key information about leasing arrangements. The guidance offers specific accounting guidance for a lessee, lessor, and sale and leaseback transactions. Lessees and lessors are required to disclose qualitative and quantitative information about leasing arrangements to enable a user of the financial statements to assess the amount, timing and uncertainty of cash flows arising from leases. Leases will be classified as either finance or operating, with the classification affecting the pattern of expense recognition in the income statement. As a part of the Company’s election under the JOBS Act, the guidance is effective for the Company’s annual reporting period beginning after December 15, 2021 and interim reporting periods within the annual period beginning after December 15, 2022. The Company adopted Topic 842 effective January 1, 2022 utilizing the modified retrospective transition method. The adoption of Topic 842 had a material impact on the Company’s consolidated balance sheet as certain of our operating lease commitments were recognized as right-of-use assets and lease liabilities. This new guidance did not have a material impact upon the Company’s consolidated statement of operations. We elected the package of practical expedients permitted under the transition guidance within Topic 842, which allowed us to carry forward prior conclusions about lease identification, classification and initial direct costs for leases entered into prior to adoption of Topic 842. Additionally, we elected to not separate lease and non-lease components for all of our leases. For leases with a term of 12 months or less, we elected the short-term lease exemption, which allowed us to not recognize right-of-use assets or lease liabilities for qualifying leases existing at transition and new leases we may enter into in the future.

Intangibles

In September 2018, the FASB issued ASU No. 2018-15, Intangibles—Goodwill and Other—Internal Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract (a consensus of the FASB Emerging Issues Task Force), which aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal use software. Early adoption is permitted and can be applied prospectively to all implementation costs incurred after the date of adoption or retrospectively. The Company adopted this ASU prospectively on January 1, 2021, and the adoption of this ASU did not have a material impact on the consolidated financial statements.

Codification Improvements

In October 2020, the FASB issued ASU No. 2020-10, Codification Improvements, which updates various codification topics by clarifying disclosure requirements to align with the SEC's regulations. The guidance is effective for the Company’s annual reporting period beginning after December 15, 2021 and interim reporting periods within the annual period beginning after December 15, 2022. Effective January 1, 2022, we adopted this standard on a prospective basis. The adoption of this ASU did not have a material impact on the consolidated financial statements.

Income Taxes

In December 2020, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. The guidance removes certain exceptions to the general principles in Topic 740 and also clarifies and amends existing guidance to improve consistent application. The Company adopted ASU 2019-12 prospectively on January 1, 2021, and the adoption of this ASU did not have a material impact on the consolidated financial statements.

Issuer’s Accounting for Certain Modifications or Exchanges of Freestanding Equity-Classified Written Call Options

In May 2021, the FASB issued ASU No. 2021-04, Issuer’s Accounting for Certain Modifications or Exchanges of Freestanding Equity-Classified Written Call Options, which clarifies an issuer’s accounting for modifications or exchanges of freestanding equity-classified written call options that remain equity classified after modifications or exchanges. The ASU requires issuers to account for

the modifications or exchanges based on the economic substance of the modification or exchange and whether the transaction was done to issue equity, to issue or modify debt, or for other reasons. We adopted this standard prospectively on January 1, 2022. The adoption did not have an impact on the consolidated financial statements.

Leases - Summary of Future Minimum Payments Under Non-Cancelable Operating Leases (Details) $ in Thousands	Dec. 31, 2021 USD ($)
Leases [Abstract]
2022	$ 3,039
2023	3,953
2024	3,060
2025	2,991
2026	2,974
Thereafter	13,739
Total minimum payments	$ 29,756

Cover - USD ($) $ in Millions	12 Months Ended
Cover - USD ($) $ in Millions	Dec. 31, 2022	Feb. 28, 2023	Jun. 30, 2022
Document Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2022
Document Fiscal Year Focus	2022
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-40015
Entity Registrant Name	Viant Technology Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	85-3447553
Entity Address, Address Line One	2722 Michelson Drive
Entity Address, Address Line Two	Suite 100
Entity Address, City or Town	Irvine
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92612
City Area Code	949
Local Phone Number	861-8888
Title of 12(b) Security	Class A common stock, par value $0.001 per share
Trading Symbol	DSP
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
ICFR Auditor Attestation Flag	false
Entity Shell Company	false
Entity Public Float			$ 71.7
Documents Incorporated by Reference	DOCUMENTS INCORPORATED BY REFERENCE Portions of the registrant’s definitive Proxy Statement for its 2023 Annual Meeting of Stockholders, which the registrant intends to file pursuant to Regulation 14A with the Securities and Exchange Commission no later than 120 days after the registrant’s fiscal year ended December 31, 2022, are incorporated by reference into Part III of this Annual Report on Form 10-K.
Entity Central Index Key	0001828791
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Small Business	true
Class A Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		14,647,798
Class B Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		47,082,260

Accrued Liabilities - Summary of Accrued Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Payables and Accruals [Abstract]
Accrued traffic acquisition costs	$ 29,631	$ 30,942
Other accrued liabilities	5,432	3,144
Total accrued liabilities	$ 35,063	$ 34,086

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2022	Dec. 31, 2021
Preferred stock, par value per share	$ 0.001
Preferred stock, shares authorized (shares)	10,000,000
Preferred stock, shares issued	0
Preferred stock, shares outstanding	0
Treasury stock, shares	140,088	216,230
Class A Common Stock
Common stock, par value per share	$ 0.001
Common stock, shares authorized (shares)	450,000,000
Common stock, shares issued	14,783,886	13,920,868
Common stock, shares outstanding	14,643,798	13,704,638
Class B Common Stock
Common stock, par value per share	$ 0.001
Common stock, shares authorized (shares)	150,000,000
Common stock, shares issued	47,082,260	47,107,130
Common stock, shares outstanding	47,082,260	47,107,130

Property, Equipment and Software, Net - Schedule of Major Classes of Property, Equipment and Software (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Property Plant And Equipment [Line Items]
Total property, equipment and software	$ 77,933	$ 66,682
Less: Accumulated depreciation	(54,827)	(44,351)
Total property, equipment and software, net	23,106	22,331
Capitalized software development costs
Property Plant And Equipment [Line Items]
Total property, equipment and software	72,988	61,490
Computer equipment
Property Plant And Equipment [Line Items]
Total property, equipment and software	1,116	1,823
Purchased software
Property Plant And Equipment [Line Items]
Total property, equipment and software	32	32
Furniture, fixtures and office equipment
Property Plant And Equipment [Line Items]
Total property, equipment and software	1,226	1,159
Leasehold improvements
Property Plant And Equipment [Line Items]
Total property, equipment and software	$ 2,571	$ 2,178

Basis of Presentation and Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2022

Basis Of Presentation And Summary Of Significant Accounting Policies [Abstract]

Basis of Presentation and Principles of Consolidation

Use of Estimates

Comprehensive Income (Loss)

For the periods presented, net income (loss) is equal to comprehensive income (loss).

Segment Information

Revenue Recognition

•Identification of a contract with a customer;

•Identification of the performance obligations in the contract;

•Determination of the transaction price;

•Allocation of the transaction price to the performance obligations in the contract; and

•Recognition of revenue when or as the performance obligations are satisfied.

Operating Expenses

We classify our operating expenses into the following four categories. Each expense category includes overhead such as rent and occupancy charges, which is allocated based on headcount.

Stock-Based Compensation

Unit-Based Compensation

Earnings (Loss) Per Share

Earnings (Loss) Per Unit

Cash and Cash Equivalents

Accounts Receivable, Net of Allowances

The following table presents changes in the allowance for doubtful accounts:


	Year Ended December 31,
	2022		2021
Beginning balance	$	54	$	335
Provision for (recovery of) doubtful accounts	1,260		(107)
Write-offs, net of recoveries	(299)		(174)
Ending balance	$	1,015	$	54

Deferred Offering Costs

Deferred Offering CostsDeferred offering costs consisted primarily of accounting, legal, and other costs related to our IPO. As of December 31, 2020, the Company capitalized $2.2 million of deferred offering costs within prepaid expenses and other current assets in the consolidated balance sheet. Upon consummation of the IPO in February 2021, total deferred offering costs of $4.3 million were reclassified as additional paid-in capital within stockholders’ equity and recorded against the proceeds from the IPO.

Property, Equipment and Software, Net


			Years
Computer equipment			3-5
Purchased software			3
Capitalized software development costs			3
Furniture, fixtures and office equipment			10
Leasehold improvements			*

*Leasehold improvements are depreciated on a straight-line basis over the term of the lease, or the useful life of the assets, whichever is shorter.

Capitalized Software Development Costs

Capitalized Interest

Impairment of Long-Lived Assets

Goodwill

Paycheck Protection Program Loan

Fair Value of Financial Instruments

•Level 1: Unadjusted quoted prices in active markets for identical assets or liabilities accessible to the reporting entity at the measurement date.

Financial Instruments Not Recorded at Fair Value on a Recurring Basis

Assets and Liabilities Recorded at Fair Value on a Non-Recurring Basis

Leases

•our existing arrangements are or contain leases;

•our existing arrangements are operating or finance leases; and

•to capitalize initial direct costs.

Concentration of Risk

The following table provides the Company’s concentrations of credit risk with respect to advertising agency holding companies as a percentage of the Company’s total revenues.


	Year Ended December 31,
	2022		2021
Advertising Agency Holding Company
A	<10.0 %		15.5	%
B	13.5	%	14.2	%

Related Party Relationships

Income Taxes

The Company is the managing member of Viant Technology LLC and, as a result, consolidates the financial results of Viant Technology LLC in the consolidated financial statements. Viant Technology LLC is a pass-through entity for U.S. federal and most applicable state and local income tax purposes following a corporate reorganization effected in connection with our initial public offering. As an entity classified as a partnership for tax purposes, Viant Technology LLC is not subject to U.S. federal and certain state and local income taxes. Any taxable income or loss generated by Viant Technology LLC is passed through to and included in the taxable income or loss of its members, including us. The Company is taxed as a corporation and pays corporate federal, state and local taxes with respect to income allocated from Viant Technology LLC, based on Viant Technology Inc.'s 23.7% interest in Viant Technology LLC.

Tax Receivable Agreement

Treasury Stock

JOBS Act Election as an Emerging Growth Company

Recently Issued Accounting Pronouncements and Recently Adopted Accounting Pronouncements

Recently Issued Accounting Pronouncements

Financial Instruments—Credit Losses

Recently Adopted Accounting Pronouncements

Leases

Intangibles

Codification Improvements

Income Taxes

Issuer’s Accounting for Certain Modifications or Exchanges of Freestanding Equity-Classified Written Call Options

Goodwill and Intangible Assets, Net - Summary of Estimated Future Amortization of Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
2023	$ 467
2024	107
2025	80
2026	13
2027	0
Thereafter	0
Net Carrying Amount	$ 667	$ 1,786

Income Taxes and Tax Receivable Agreement - Schedule of Effective Income Tax Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
U.S. statutory federal income tax rate	21.00%	21.00%
Income passed through to noncontrolling interests	(15.80%)	(16.70%)
State and local taxes, net of federal benefit	0.80%	0.60%
Permanent items	(0.30%)	0.70%
Stock-based compensation	(2.90%)	(3.20%)
Credits	0.80%	0.00%
Other, net	0.90%	0.00%
Valuation allowance	(4.50%)	(2.40%)
Total effective rate	0.00%	(0.00%)

Convertible Preferred Units and Common Units - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	12 Months Ended
	Oct. 31, 2020	Dec. 31, 2022	Dec. 31, 2019	Dec. 31, 2021	Dec. 31, 2020
Convertible Preferred Units And Common Units [Line Items]
Historical volatility time period		3 years 3 months
Common units, units authorized (shares)				400,000	400,000
Common units, units issued (shares)				400,000	400,000
Common units, units outstanding (shares)				400,000	400,000
Dividend distributions declared	$ 5.0
Preferred Unitholders
Convertible Preferred Units And Common Units [Line Items]
Dividend distributions payment	3.0
Common Unitholders
Convertible Preferred Units And Common Units [Line Items]
Dividend distributions payment	$ 2.0
U.S. Treasury Notes
Convertible Preferred Units And Common Units [Line Items]
Debt securities yield period		3 years
Market Approach
Convertible Preferred Units And Common Units [Line Items]
Fair value of common units percentage		50.00%
Income Approach
Convertible Preferred Units And Common Units [Line Items]
Fair value of common units percentage		50.00%
2016 Convertible Preferred Units \| Former Holdco’s
Convertible Preferred Units And Common Units [Line Items]
Liquidation preference per share (dollars per share)		$ 190.65
Preferred units convertible to common units (shares)		1
2019 Former Holdco Transaction
Convertible Preferred Units And Common Units [Line Items]
Implied discount amount			$ 27.6
Effective conversion price per unit (dollars per share)		$ 12.50
Fair value of common units into preferred units are convertible at issuance per unit (dollars per share)		$ 58.43
2019 Former Holdco Transaction \| Four Brothers 2 LLC
Convertible Preferred Units And Common Units [Line Items]
Preferred units convertible to common units (shares)		1
Liquidation preference calculated percentage		0.028%
Temporary equity stated value per preferred unit plus accrued return (dollars per share)		$ 12.50
Unit Repurchase Agreement \| 2016 Convertible Preferred Units \| Former Holdco’s
Convertible Preferred Units And Common Units [Line Items]
Number of ownership interest units retired (shares)		600,000
Unit Repurchase Agreement \| 2019 Convertible Preferred Units \| Four Brothers 2 LLC
Convertible Preferred Units And Common Units [Line Items]
Convertible preferred units, units issued (shares)		600,000

Stock-based Compensation - Additional Information (Details) - USD ($)			12 Months Ended
	Feb. 12, 2021	Jan. 01, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period				4 years
Compensation cost			$ 28,901,000	$ 68,822,000	$ 0
Expected dividend yield			0.00%
Phantom Unit Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Equity incentive plan number of units, authorized (shares)		12,500,000
Distribution threshold amount		$ 100,000,000
Vesting period		4 years		4 years
Compensation cost				$ 0
2021 LTIP
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares remained available for grant (shares)			4,400,000
2021 LTIP \| Class A Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares reserved for issuance (shares)	11,787,112
Annual increase percentage of shares reserved for issuance	5.00%
2021 LTIP \| Class A Common Stock \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Annual increase percentage of shares reserved for issuance				5.00%
Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share based payment award equity instruments other than options grants in period (shares)			3,023
Total fair value of RSUs, as of their respective vesting dates			$ 7,500,000
Unrecognized stock-based compensation expected to be recognized			$ 41,100,000
Unrecognized stock-based compensation expected to be recognized over a weighted-average period			2 years 6 months
Unrecognized stock-based compensation expected to be recognized			$ 41,100,000
Restricted Stock Units \| 2021 LTIP
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share based payment award equity instruments other than options grants in period (shares)	6,200,000
Nonqualified Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized stock-based compensation expected to be recognized			$ 10,300,000
Unrecognized stock-based compensation expected to be recognized over a weighted-average period			3 years 2 months 12 days
Weighted-average grant-date fair value of stock options granted (shares)			$ 3.50
Unrecognized stock-based compensation expected to be recognized			$ 10,300,000
Expected dividend yield			0.00%	0.00%

Revolving Credit Facility and PPP Loan - Additional Information (Details)			12 Months Ended
	Apr. 14, 2020 USD ($)	Oct. 31, 2019 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Line Of Credit Facility [Line Items]
Carrying value of long-term debt			$ 0	$ 17,500,000
Paycheck Protection Program Loan
Line Of Credit Facility [Line Items]
Carrying value of long-term debt			0	0
Proceeds from issuance of debt	$ 6,000,000
Bears interest at an annual rate	1.00%
Paycheck Protection Program Loan \| Principal Forgiveness
Line Of Credit Facility [Line Items]
Debt instrument forgiveness			6,000,000
Paycheck Protection Program Loan \| Accrued Interest Forgiveness
Line Of Credit Facility [Line Items]
Debt instrument forgiveness			100,000
Revolving Credit Facility
Line Of Credit Facility [Line Items]
Carrying value			0
Carrying value of long-term debt			$ 0	$ 17,500,000
Loan Agreement \| Revolving Credit Facility \| PNC Bank
Line Of Credit Facility [Line Items]
Senior secured revolving credit facility, maximum borrowing capacity		$ 40,000,000
Weighted average interest rate		0.69%
Facility fee for undrawn amounts		0.375%
Fixed coverage charge ratio			1.40
Undrawn availability			0.25
Loan Agreement \| Revolving Credit Facility \| PNC Bank \| Domestic Rate Loans
Line Of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate plus margin		0.50%	0.75%
Loan Agreement \| Revolving Credit Facility \| PNC Bank \| Domestic Rate Loans \| Minimum
Line Of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate plus margin		0.75%
Loan Agreement \| Revolving Credit Facility \| PNC Bank \| Domestic Rate Loans \| Maximum
Line Of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate plus margin		1.25%
Loan Agreement \| Revolving Credit Facility \| PNC Bank \| LIBOR Rate Loans
Line Of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate plus margin		1.00%	1.75%
Loan Agreement \| Revolving Credit Facility \| PNC Bank \| LIBOR Rate Loans \| Minimum
Line Of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate plus margin		1.75%
Loan Agreement \| Revolving Credit Facility \| PNC Bank \| LIBOR Rate Loans \| Maximum
Line Of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate plus margin		2.25%

Revenue - Summary of Changes in Deferred Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Revenue from Contract with Customer [Roll Forward]
Beginning balance	$ 6,551	$ 8,337
Agreement modification	(6,163)	0
Recognition of deferred revenue	(265)	(1,786)
Deferral of revenue	0	0
Ending balance	$ 123	$ 6,551

Earnings (Loss) Per Share/Unit (Tables)

12 Months Ended

Dec. 31, 2022

Earnings Per Share [Abstract]

Calculation of Basic and Diluted Net Earnings (Loss) Per Share/Unit

The following table presents the calculation of basic and diluted net earnings (loss) per share/unit for the years ended December 31, 2022, 2021, and 2020. Refer to Note 2—Basis of Presentation and Summary of Significant Accounting Policies for additional information related to basic and diluted earnings (loss) per share/unit.


	Year Ended December 31,
	2022		2021		2020
Numerator
Net income (loss)	$	(48,089)	$	(37,609)	$	20,638
Less: Dividend paid to preferred unitholders	—		—		(3,000)
Adjusted net income (loss) attributable to common unitholders	(48,089)		(37,609)		17,638
Less: Dividend paid to common unitholders	—		—		(2,000)
Undistributed earnings (loss) attributable to all unitholders	(48,089)		(37,609)		15,638
Less: Undistributed earnings attributable to participating securities	—		—		(9,383)
Less: Net loss attributable to noncontrolling interests	(36,176)		(29,867)		—
Net income (loss) attributable to Viant Technology Inc./common unitholders	$	(11,913)	$	(7,742)	$	6,255
Denominator
Weighted-average shares of Class A common stock/units outstanding—basic	14,185		12,364		400
Effect of dilutive securities:
Convertible preferred units	—		—		600
Weighted-average shares of Class A common stock/units outstanding—diluted	14,185		12,364		1,000
Earnings (loss) per Class A common stock/unit—basic
Distributed earnings per unit—basic	$	—	$	—	$	5.00
Undistributed earnings (loss) per unit—basic	(0.84)		(0.63)		15.64
Total earnings (loss) per Class A common stock/unit—basic	$	(0.84)	$	(0.63)	$	20.64
Earnings (loss) per Class A common stock/unit—diluted
Total earnings (loss) per Class A common stock/unit—diluted	$	(0.84)	$	(0.63)	$	20.64
Anti-dilutive shares/units excluded from earnings (loss) per share of Class A common stock/unit—diluted:
Restricted stock units	3,928		3,033		—
Nonqualified stock options	3,661		220		—
Shares of Class B common stock	47,082		47,107		—
Total shares excluded from earnings (loss) per share of Class A common stock/unit—diluted	54,671		50,360		—

Accrued Liabilities

12 Months Ended

Dec. 31, 2022

Payables and Accruals [Abstract]

Accrued Liabilities

The Company’s accrued liabilities consisted of the following:


	As of December 31,
	2022		2021
Accrued traffic acquisition costs	$	29,631	$	30,942
Other accrued liabilities	5,432		3,144
Total accrued liabilities	$	35,063	$	34,086

Stock-based Compensation - Summary of Stock/Unit-based Compensation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock/Unit-Based Compensation expense	$ 28,901	$ 68,822	$ 0
Platform operations
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock/Unit-Based Compensation expense	4,761	13,096	0
Sales and marketing
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock/Unit-Based Compensation expense	9,010	25,639	0
Technology and development
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock/Unit-Based Compensation expense	5,323	12,373	0
General and administrative
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock/Unit-Based Compensation expense	$ 9,807	$ 17,714	$ 0

Earnings (Loss) Per Share/Unit - Calculation of Basic and Diluted Net Earnings (Loss) Per Share/Unit (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Numerator
Net income (loss)	$ (48,089)	$ (37,609)	$ 20,638
Less: Dividend paid to preferred unitholders	0	0	(3,000)
Adjusted net income (loss) attributable to common unitholders	(48,089)	(37,609)	17,638
Less: Dividend paid to common unitholders	0	0	(2,000)
Undistributed earnings (loss) attributable to all unitholders	(48,089)	(37,609)	15,638
Less: Undistributed earnings attributable to participating securities	0	0	(9,383)
Less: Net loss attributable to noncontrolling interests	(36,176)	(29,867)	0
Net income (loss) attributable to Viant Technology Inc./common unitholders	$ (11,913)	$ (7,742)	$ 6,255
Weighted-average Class A common stock/units outstanding:
Weighted-average shares of Class A common stock/units outstanding—basic	14,185,000	12,364,000	400,000
Effect of dilutive securities:
Convertible preferred units	0	0	600,000
Weighted-average shares of Class A common stock/units outstanding—diluted	14,185,000	12,364,000	1,000,000
Earnings (loss) per Class A common stock/unit—basic
Distributed earnings per unit—basic (dollars per share)	$ 0	$ 0	$ 5.00
Undistributed earnings (loss) per unit—basic (dollars per share)	(0.84)	(0.63)	15.64
Total earnings (loss) per Class A common stock/unit—basic (dollars per share)	(0.84)	(0.63)	20.64
Earnings (loss) per Class A common stock/unit—diluted
Total earnings (loss) per Class A common stock/unit—diluted (dollars per share)	$ (0.84)	$ (0.63)	$ 20.64
Anti-dilutive shares/units excluded from earnings (loss) per share of Class A common stock/unit—diluted:
Total shares excluded from earnings (loss) per share of Class A common stock/unit—diluted (shares)	54,671,000	50,360,000	0
Class A Common Stock
Weighted-average Class A common stock/units outstanding:
Weighted-average shares of Class A common stock/units outstanding—basic	14,185,000	12,364,000	400,000
Effect of dilutive securities:
Weighted-average shares of Class A common stock/units outstanding—diluted	14,185,000	12,364,000	1,000,000
Earnings (loss) per Class A common stock/unit—basic
Total earnings (loss) per Class A common stock/unit—basic (dollars per share)	$ (0.84)	$ (0.63)	$ 20.64
Earnings (loss) per Class A common stock/unit—diluted
Total earnings (loss) per Class A common stock/unit—diluted (dollars per share)	$ (0.84)	$ (0.63)	$ 20.64
Class B Common Stock
Anti-dilutive shares/units excluded from earnings (loss) per share of Class A common stock/unit—diluted:
Total shares excluded from earnings (loss) per share of Class A common stock/unit—diluted (shares)	47,082,000	47,107,000	0
Restricted Stock Units
Anti-dilutive shares/units excluded from earnings (loss) per share of Class A common stock/unit—diluted:
Total shares excluded from earnings (loss) per share of Class A common stock/unit—diluted (shares)	3,928,000	3,033,000	0
Nonqualified Stock Options
Anti-dilutive shares/units excluded from earnings (loss) per share of Class A common stock/unit—diluted:
Total shares excluded from earnings (loss) per share of Class A common stock/unit—diluted (shares)	3,661,000	220,000	0

Goodwill and Intangible Assets, Net (Tables)

12 Months Ended

Dec. 31, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Balances of Intangibles Assets and Accumulated Amortization

The balances of intangibles assets and accumulated amortization are as follows:


	As of December 31, 2022
	Remaining Weighted- Average Useful Life (years)	Gross Amount		Accumulated Amortization		Net Carrying Amount
Developed technology	0.1	$	4,927	$	(4,869)	$	58
Customer relationships	1.1	2,300		(1,944)		356
Trademarks/tradenames	3.2	1,400		(1,147)		253
Total		$	8,627	$	(7,960)	$	667


	As of December 31, 2021
	Remaining Weighted- Average Useful Life (years)	Gross Amount		Accumulated Amortization		Net Carrying Amount
Developed technology	1.1	$	4,927	$	(4,169)	$	758
Customer relationships	2.1	2,300		(1,615)		685
Trademarks/tradenames	4.0	1,400		(1,057)		343
Total		$	8,627	$	(6,841)	$	1,786

Summary of Amortization Recorded in Consolidated Statements of Operations

Amortization recorded in the consolidated statements of operations was as follows:


	Year Ended December 31,
	2022		2021		2020
Platform operations	$	700	$	700	$	700
Sales and marketing	—		—		—
Technology and development	—		—		—
General and administrative	419		529		529
Total	$	1,119	$	1,229	$	1,229

Summary of Estimated Future Amortization of Intangible Assets

Estimated future amortization of intangible assets as of December 31, 2022 is as follows:


	As of December 31,
Year	2022
2023	$	467
2024	107
2025	80
2026	13
2027	—
Thereafter	—
Total	$	667

Basis of Presentation and Summary of Significant Accounting Policies - Schedule of Estimated Useful Lives of Property, Equipment and Software (Details)	12 Months Ended
	Dec. 31, 2022
Computer equipment \| Minimum
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Property, equipment and software, estimated useful lives	3 years
Computer equipment \| Maximum
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Property, equipment and software, estimated useful lives	5 years
Purchased software
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Property, equipment and software, estimated useful lives	3 years
Capitalized software development costs
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Property, equipment and software, estimated useful lives	3 years
Furniture, fixtures and office equipment
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Property, equipment and software, estimated useful lives	10 years

Goodwill and Intangible Assets, Net - Summary of Balances of Intangibles Assets and Accumulated Amortization (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Finite Lived Intangible Assets [Line Items]
Gross Amount	$ 8,627	$ 8,627
Accumulated Amortization	(7,960)	(6,841)
Net Carrying Amount	$ 667	$ 1,786
Developed technology
Finite Lived Intangible Assets [Line Items]
Remaining Weighted- Average Useful Life (years)	1 month 6 days	1 year 1 month 6 days
Gross Amount	$ 4,927	$ 4,927
Accumulated Amortization	(4,869)	(4,169)
Net Carrying Amount	$ 58	$ 758
Customer relationships
Finite Lived Intangible Assets [Line Items]
Remaining Weighted- Average Useful Life (years)	1 year 1 month 6 days	2 years 1 month 6 days
Gross Amount	$ 2,300	$ 2,300
Accumulated Amortization	(1,944)	(1,615)
Net Carrying Amount	$ 356	$ 685
Trademarks/tradenames
Finite Lived Intangible Assets [Line Items]
Remaining Weighted- Average Useful Life (years)	3 years 2 months 12 days	4 years
Gross Amount	$ 1,400	$ 1,400
Accumulated Amortization	(1,147)	(1,057)
Net Carrying Amount	$ 253	$ 343

Nature of Operations	12 Months Ended
Nature of Operations	Dec. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Operations	Nature of Operations Viant Technology Inc. (the “Company,” “we,” “us,” “our” or “Viant”) was incorporated in the State of Delaware on October 9, 2020. The Company operates a demand side platform, Adelphic, that is used by marketers and their advertising agencies to centralize the planning, buying and measurement of their advertising across most channels, including desktop, mobile, connected TV, linear TV, in-game, streaming audio and digital billboards. On February 9, 2021, the Securities and Exchange Commission (“SEC”) declared effective the Company’s Form S-1 related to the initial public offering ("IPO") of its Class A common stock. The closing date of the IPO was February 12, 2021, and in connection with the closing and the corporate reorganization (the “Reorganization Transactions”), the following actions were taken: •The Company amended and restated its certificate of incorporation, under which the Company is authorized to issue up to 450,000,000 shares of Class A common stock, up to 150,000,000 shares of Class B common stock, and up to 10,000,000 shares of preferred stock; •The limited liability company agreement of Viant Technology LLC was amended and restated (as amended and restated, the “Viant Technology LLC Agreement”) to, among other things, provide for Class A units and Class B units and appoint the Company as the sole managing member of Viant Technology LLC; •The Viant Technology LLC Agreement classified the interests acquired by the Company as Class A units, reclassified the interests held by the continuing members of Viant Technology LLC as Class B units, and permits the continuing members of Viant Technology LLC to exchange Class B units for shares of Class A common stock of Viant Technology Inc. on a one-for-one basis or, at the election of Viant Technology Inc., for cash at the current fair value on the date of the exchange. Immediately following such reclassification, the continuing members held 48,935,559 Class B units. For each membership unit of Viant Technology LLC that was reclassified as a Class B unit, the Company issued one corresponding share of our Class B common stock to the continuing members, or 48,935,559 shares of Class B common stock in total; •The Company issued and sold 10,000,000 shares of its Class A common stock to the underwriters at an IPO price of $25.00 per share, for gross proceeds of $250.0 million before deducting underwriting discounts and commissions of $17.5 million; •The Company used the net proceeds of $232.5 million to acquire 10,000,000 newly issued Class A units of Viant Technology LLC at a per-unit price equal to the per-share price paid by the underwriters for shares of our Class A common stock; •The underwriters exercised their option to purchase 1,500,000 additional shares of Class A common stock from the selling stockholders in the IPO. The Company did not receive any proceeds from the sale of shares by the selling stockholders. Pursuant to such exercise, the selling stockholders exchanged the corresponding number of Class B units for the shares of Class A common stock, the corresponding number of shares of Class B common stock were automatically retired, and 1,500,000 Class A units were issued to the Company; •The Class B stockholders and Class A stockholders initially had 80.5% and 19.5%, respectively, of the combined voting power of the Company’s common stock. The Class A common stock outstanding represents 100% of the rights of the holders of all classes of the Company’s outstanding common stock to share in distributions from the Company, except for the right of Class B stockholders to receive the par value of the Class B common stock upon our liquidation, dissolution or winding up or an exchange of Class B units; •The Company entered into a Registration Rights Agreement with the Class B stockholders to provide for certain rights and restrictions after the IPO; and •Viant Technology LLC’s 2020 Equity Based Incentive Compensation Plan (the “Phantom Unit Plan”) was terminated and replaced with the Company’s 2021 Long Term Incentive Plan (the “LTIP”). Immediately following the closing of the IPO, Viant Technology LLC became the predecessor of the Company for financial reporting purposes. Viant Technology Inc. is a holding company, and its sole material asset is its equity interest in Viant Technology LLC. As the sole managing member of Viant Technology LLC, the Company operates and controls all of the business and affairs of Viant Technology LLC. The Reorganization Transactions are accounted for as a reorganization of entities under common control. As a result, the consolidated financial statements of the Company recognize the assets and liabilities received in the Reorganization Transactions at their historical carrying amounts, as reflected in the historical consolidated financial statements of Viant Technology LLC. The Company consolidates Viant Technology LLC in its consolidated financial statements and records a noncontrolling interest related to the Class B units held by the Class B stockholders on its consolidated balance sheets, and statements of operations.

Income Taxes and Tax Receivable Agreement - Significant Portion of Deferred Tax Assets and Deferred Tax Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets
Net operating loss carryforwards	$ 2,561	$ 1,321
Tax credits	800	0
Investment in Partnership	7,866	7,909
Other, net	253	108
Subtotal	11,480	9,338
Valuation allowance	(11,480)	(9,338)
Total deferred tax assets	0	0
Deferred tax liabilities
Other, net	0	0
Total deferred tax liabilities	0	0
Net deferred tax (liabilities) assets	$ 0	$ 0

Leases (Tables)

12 Months Ended

Dec. 31, 2022

Leases [Abstract]

Components of Lease Expense

The components of lease expense were as follows:


	Year Ended December 31,
	2022
Operating lease cost	$	3,669
Short-term lease cost	1,399
Variable lease cost	124
	$	5,192

Future Minimum Payments Under Non-cancelable Operating Leases

Future minimum lease payments as of December 31, 2022 were as follows:


	As of December 31,
Year	2022
2023	$	4,648
2024	4,385
2025	4,270
2026	4,257
2027	4,182
Thereafter	10,811
Total undiscounted future lease payments	32,553
Less: Imputed interest	(3,844)
Present value of operating lease liabilities	28,709
Less: Operating lease liabilities, current	(3,711)
Operating lease liabilities, noncurrent	$	24,998

Summary of Future Minimum Payments Under Non-Cancelable Operating Leases

Future minimum payments under the Company’s non-cancelable operating leases, primarily related to office space, as of December 31, 2021 are as follows:


	As of December 31,
Year	2021
2022	$	3,039
2023	3,953
2024	3,060
2025	2,991
2026	2,974
Thereafter	13,739
Total minimum payments	$	29,756

Related Parties - Additional Information (Details) - Meredith Corporation - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Related Party Transaction [Line Items]
Unpaid expenses	$ 200,000	$ 300,000
Expenses incurred	1,000,000.0	300,000
Revenue	0	0	$ 0
Purchases from related parties	0	0	$ 0
Due from (to) related party	$ 0	$ 0

- Definition

Carrying amount as of the balance sheet date of obligations due all related parties. For classified balance sheets, represents the current portion of such liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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+ Details

Leases - Components of Lease Expense (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)
Leases [Abstract]
Operating lease cost	$ 3,669
Short-term lease cost	1,399
Variable lease cost	124
Total lease cost	$ 5,192

Convertible Preferred Units and Common Units (Tables)

12 Months Ended

Dec. 31, 2022

Convertible Preferred Units And Common Units [Abstract]

Summary of Valuation Assumptions Used in Fair Value Calculation of Common Units

The following outlines the option valuation assumptions used in the fair value calculation of common units:


Risk-free interest rate	2.28	%
Volatility	70	%
Expected term	< 2 years
Discount for lack of marketability	29	%

Income Taxes and Tax Receivable Agreement - Schedule of Provision for Income Taxes (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Current:
U.S. federal income tax	$ 0	$ 0
State and local income tax	0	0
Foreign income tax	0	0
Deferred:
U.S. federal income tax	0	0
State and local income tax	0	0
Foreign income tax	0	0
Income tax (benefit) provision	$ 0	$ 0	$ 0

- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References + Details

Earnings (Loss) Per Share/Unit

12 Months Ended

Dec. 31, 2022

Earnings Per Share [Abstract]

Earnings (Loss) Per Share/Unit

Prior to the Reorganization Transactions that occurred on February 12, 2021, the Viant Technology LLC membership structure included certain convertible preferred units and common units. As a result of the Reorganization Transactions, Class B units of Viant Technology LLC are exchangeable in the future for Class A common stock of the Company. As the conversion of Viant Technology LLC preferred and common units to Class B units was not done in a proportionate manner with respect to the rights and economic interests of the former Viant Technology LLC unit holders compared to those of the new Class B unit/shareholders in Viant Technology LLC and Viant Technology Inc., we do not believe it is appropriate to retrospectively adjust these units. Accordingly, the earnings per unit calculation presented for the year ended December 31, 2020 reflect units of the membership structure prior to the Reorganization Transactions.

For the years ended December 31, 2022 and 2021, basic net loss per share has been calculated by dividing net loss attributable to Class A common stockholders for the period subsequent to the Reorganization Transactions, by the weighted average number of shares of Class A common stock outstanding for the same period. Shares of Class A common stock are weighted for the portion of the

period in which the shares were outstanding. Diluted net loss per share has been calculated in a manner consistent with that of basic net loss per share while considering all potentially dilutive shares of Class A common stock outstanding during the period.

For the year ended December 31, 2020, basic earnings (loss) per unit represents net income (loss) divided by the weighted-average number of units outstanding. Diluted net income (loss) per share has been computed in a manner consistent with that of basic net loss per share while considering all shares of potentially dilutive common units that were outstanding during the period, inclusive of the convertible preferred units using the if-converted method and the incentive common units using the treasury stock method, if dilutive. For the year ended December 31, 2020, there were no potential dilutive units related to incentive common units as they were all issued as of the beginning of the year.

The undistributed earnings for year ended December 31, 2020 have been allocated based on the participation rights of the convertible preferred and common units as if the earnings for the period have been distributed. As the participation in distributed and undistributed earnings is identical for both classes, the distributed and undistributed earnings are allocated on a proportionate basis.


	Year Ended December 31,
	2022		2021		2020
Numerator
Net income (loss)	$	(48,089)	$	(37,609)	$	20,638
Less: Dividend paid to preferred unitholders	—		—		(3,000)
Adjusted net income (loss) attributable to common unitholders	(48,089)		(37,609)		17,638
Less: Dividend paid to common unitholders	—		—		(2,000)
Undistributed earnings (loss) attributable to all unitholders	(48,089)		(37,609)		15,638
Less: Undistributed earnings attributable to participating securities	—		—		(9,383)
Less: Net loss attributable to noncontrolling interests	(36,176)		(29,867)		—
Net income (loss) attributable to Viant Technology Inc./common unitholders	$	(11,913)	$	(7,742)	$	6,255
Denominator
Weighted-average shares of Class A common stock/units outstanding—basic	14,185		12,364		400
Effect of dilutive securities:
Convertible preferred units	—		—		600
Weighted-average shares of Class A common stock/units outstanding—diluted	14,185		12,364		1,000
Earnings (loss) per Class A common stock/unit—basic
Distributed earnings per unit—basic	$	—	$	—	$	5.00
Undistributed earnings (loss) per unit—basic	(0.84)		(0.63)		15.64
Total earnings (loss) per Class A common stock/unit—basic	$	(0.84)	$	(0.63)	$	20.64
Earnings (loss) per Class A common stock/unit—diluted
Total earnings (loss) per Class A common stock/unit—diluted	$	(0.84)	$	(0.63)	$	20.64
Anti-dilutive shares/units excluded from earnings (loss) per share of Class A common stock/unit—diluted:
Restricted stock units	3,928		3,033		—
Nonqualified stock options	3,661		220		—
Shares of Class B common stock	47,082		47,107		—
Total shares excluded from earnings (loss) per share of Class A common stock/unit—diluted	54,671		50,360		—

Audit Information	12 Months Ended
Audit Information	Dec. 31, 2022
Audit Information [Abstract]
Auditor Firm ID	34
Auditor Name	Deloitte & Touche LLP
Auditor Location	Costa Mesa, California

Stock-based Compensation - Summary of Nonqualified Stock Option Activity (Details) - Nonqualified Stock Options - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Beginning balance (shares)	220
Granted (shares)	4,101
Canceled (shares)	(648)
Expired (shares)	(12)
Ending balance (shares)	3,661	220
Weighted-Average Exercise Price of Options outstanding, beginning balance (dollars per share)	$ 15.88
Weighted average grant date fair value of units, granted (dollars per share)	5.98
Weighted average grant date fair value of units, canceled (dollars per share)	8.32
Weighted average grant date fair value of units, expired (dollars per share)	15.51
Weighted-Average Exercise Price of Options outstanding, ending balance (dollars per share)	$ 6.14	$ 15.88
Weighted-Average Remaining Contractual Term (years)	9 years 2 months 12 days	9 years 8 months 12 days
Aggregate Intrinsic Value (in thousands)		$ 20
Vested and exercisable (shares)	44
Weighted average exercise price, vested and exercisable (dollars per share)	$ 18.55
Weighted average remaining contractual term, vested and exercisable	4 years

Noncontrolling Interests - Summary of Effect of Changes in Ownership Interest in Viant Technology LLC on Equity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Noncontrolling Interest [Abstract]
Net loss attributable to Viant Technology Inc.	$ (11,913)	$ (7,742)
Transfers to noncontrolling interests:
Decrease in the additional-paid-in-capital of Viant Technology Inc. resulting from ownership changes in Viant Technology LLC	(20,284)	(44,361)
Change from net loss attributable to Viant Technology Inc. and transfers to noncontrolling interests	$ (32,197)	$ (52,103)

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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+ Details

Revolving Credit Facility and PPP Loan (Tables)

12 Months Ended

Dec. 31, 2022

Debt Disclosure [Abstract]

Schedule of Debt and Revolving Credit Facilities

The Company’s debt and revolving credit facilities consisted of the following:


	As of December 31,
	2022		2021
Revolving credit facility	$	—	$	17,500
PPP Loan	—		—
Total debt	—		17,500
Less: Current portion of long-term debt	—		—
Total long-term debt	$	—	$	17,500

Stock-based Compensation - Summary of RSU Activity (Details) - Restricted Stock Units	12 Months Ended
	Dec. 31, 2022 $ / shares shares
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
RSUs outstanding, beginning balance (shares) \| shares	3,033
Granted (shares) \| shares	3,023
Vested (shares) \| shares	(1,338)
Canceled/forfeited (shares) \| shares	(790)
RSUs outstanding, ending balance (shares) \| shares	3,928
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted-average grant-date fair value, beginning balance (dollars per share) \| $ / shares	$ 24.29
Granted (dollars per share) \| $ / shares	5.96
Vested (dollars per share) \| $ / shares	24.26
Canceled/forfeited (dollars per share) \| $ / shares	12.38
Weighted-average grant-date fair value, ending balance (dollars per share) \| $ / shares	$ 12.59

Leases - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Lessee Lease Description [Line Items]
Operating leases for office space remaining lease terms	8 years
Operating lease weighted average remaining lease term	7 years
Operating lease weighted average incremental borrowing rate	3.50%
Cash paid for amounts included in operating lease liabilities	$ 2.3
Rent expense		$ 4.4	$ 4.2
Current portion of deferred rent		0.2
Noncurrent portion of deferred rent		$ 0.8
Standby Letters of Credit
Lessee Lease Description [Line Items]
Security deposit	$ 0.4
Maximum
Lessee Lease Description [Line Items]
Lessee operating lease renewal term	5 years

Noncontrolling Interests

12 Months Ended

Dec. 31, 2022

Noncontrolling Interest [Abstract]

Noncontrolling Interests

We are the sole managing member of Viant Technology LLC and, as a result, consolidate the financial results of Viant Technology LLC. We report noncontrolling interests representing the economic interests in Viant Technology LLC held by the other members of Viant Technology LLC. The Viant Technology LLC Agreement classifies the interests acquired by the Company as Class A units, reclassified the interests held by the continuing members of Viant Technology LLC as Class B units and permits the continuing members of Viant Technology LLC to exchange Class B units for shares of Class A common stock on a one-for-one basis or, at the election of Viant Technology Inc., for cash at the current fair value on the date of the exchange. Changes in the Company’s ownership interest in Viant Technology LLC while retaining control of Viant Technology LLC will be accounted for as equity transactions. As such, future redemptions or direct exchanges of Class B units in Viant Technology LLC by the other members and future issuances of Class A common stock under the LTIP will result in a change in ownership, where the Company will rebalance the noncontrolling interest, offset by a change in additional-paid-in-capital.

The following table summarizes the ownership of Viant Technology LLC.


	As of December 31, 2022			As of December 31, 2021
Owner	Units Owned	Ownership Percentage		Units Owned	Ownership Percentage
Viant Technology Inc.	14,643,798	23.7	%	13,704,638	22.5	%
Noncontrolling interests	47,082,260	76.3	%	47,107,130	77.5	%
Total	61,726,058	100.0	%	60,811,768	100.0	%

During the year ended 2022, noncontrolling interests exchanged 24,870 Class B units of Viant Technology, LLC for 24,870 shares of the Company’s Class A common stock, which also resulted in the cancellation of 24,870 shares of the Company’s Class B common stock that was previously held by noncontrolling interests with no additional consideration provided.

The following table presents the effect of changes in the Company’s ownership interest in Viant Technology LLC on the Company’s equity for the years indicated.


	Year Ended December 31,
	2022		2021
Net loss attributable to Viant Technology Inc.	$	(11,913)	$	(7,742)
Transfers to noncontrolling interests:
Decrease in the additional-paid-in-capital of Viant Technology Inc. resulting from ownership changes in Viant Technology LLC	(20,284)		(44,361)
Change from net loss attributable to Viant Technology Inc. and transfers to noncontrolling interests	$	(32,197)	$	(52,103)

Revenue - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Disaggregation Of Revenue [Line Items]
Cash settlement	$ 6.2
Expected Duration of Greater Than One Year
Disaggregation Of Revenue [Line Items]
Revenue, remaining performance obligation amount	$ 0.1	$ 6.6

Property, Equipment and Software, Net (Tables)

12 Months Ended

Dec. 31, 2022

Property, Plant and Equipment [Abstract]

Schedule of Major Classes of Property, Equipment and Software

Major classes of property, equipment and software were as follows:


	As of December 31,
	2022		2021
Capitalized software development costs	$	72,988	$	61,490
Computer equipment	1,116		1,823
Purchased software	32		32
Furniture, fixtures and office equipment	1,226		1,159
Leasehold improvements	2,571		2,178
Total property, equipment and software	77,933		66,682
Less: Accumulated depreciation	(54,827)		(44,351)
Total property, equipment and software, net	$	23,106	$	22,331

Schedule of Depreciation

Depreciation recorded in the consolidated statements of operations was as follows:


	Year Ended December 31,
	2022		2021		2020
Platform operations	$	9,786	$	7,688	$	6,638
Sales and marketing	—		—		—
Technology and development	1,646		1,599		1,608
General and administrative	580		625		631
Total	$	12,012	$	9,912	$	8,877

Schedule of Interest Cost

Interest cost recorded in the consolidated balance sheets and consolidated statements of operations was as follows:


	Year Ended December 31,
	2022		2021		2020
Amount charged to expense	$	450	$	865	$	1,055
Amount capitalized within property, equipment and software, net	4		20		31
Total interest cost	$	454	$	885	$	1,086

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 206,573	$ 238,480
Accounts receivable, net of allowances	101,658	110,739
Prepaid expenses and other current assets	6,631	2,967
Total current assets	314,862	352,186
Property, equipment, and software, net	23,106	22,331
Operating lease assets	26,441	0
Intangible assets, net	667	1,786
Goodwill	12,422	12,422
Other assets	385	406
Total assets	377,883	389,131
Current liabilities:
Accounts payable	37,063	32,877
Accrued liabilities	35,063	34,086
Accrued compensation	9,162	12,247
Current portion of deferred revenue	123	1,317
Current portion of operating lease liabilities	3,711	0
Other current liabilities	1,995	2,531
Total current liabilities	87,117	83,058
Long-term debt	0	17,500
Long-term portion of deferred revenue	0	5,234
Long-term portion of operating lease liabilities	24,998	0
Other long-term liabilities	0	765
Total liabilities	112,115	106,557
Commitments and contingencies (Note 14)
Stockholders’ equity
Preferred stock, $0.001 par value	0	0
Additional paid-in capital	95,922	82,888
Accumulated deficit	(36,261)	(20,139)
Treasury stock, at cost; 140,088 and 216,230 shares held	(475)	(2,648)
Total stockholders' equity attributable to Viant Technology Inc.	59,248	60,162
Noncontrolling interests	206,520	222,412
Total equity	265,768	282,574
Total liabilities and stockholders' equity	377,883	389,131
Class A Common Stock
Stockholders’ equity
Common stock, $0.001 par value	15	14
Class B Common Stock
Stockholders’ equity
Common stock, $0.001 par value	$ 47	$ 47

Stock-based Compensation - Summary of Assumptions used in Black-Scholes Model to Determine Fair Value of Nonqualified Stock Options Granted (Details)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Expected dividend yield	0.00%
Minimum
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Expected term (in years)	5 years 10 months 24 days
Maximum
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Expected term (in years)	6 years
Nonqualified Stock Options
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Risk free interest rate, minimum	1.40%
Risk free interest rate, maximum	2.80%
Risk free interest rate		1.20%
Expected volatility, minimum	61.50%
Expected volatility, maximum	62.70%
Expected volatility		61.10%
Expected term (in years)		5 years 10 months 24 days
Expected dividend yield	0.00%	0.00%

Leases - Summary of Future Minimum Lease Payments (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Jan. 01, 2022	Dec. 31, 2021
Leases [Abstract]
2023	$ 4,648
2024	4,385
2025	4,270
2026	4,257
2027	4,182
Thereafter	10,811
Total undiscounted future lease payments	32,553
Less: Imputed interest	(3,844)
Operating lease liabilities	28,709	$ 22,000
Less: Operating lease liabilities, current	(3,711)		$ 0
Long-term portion of operating lease liabilities	$ 24,998		$ 0
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]			Other current liabilities

Basis of Presentation and Summary of Significant Accounting Policies - Schedule of Concentrations of Credit Risk (Details) - Advertising Agency Risk - Consolidated Revenue	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Advertising Agency A
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage		15.50%
Advertising Agency B
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage	13.50%	14.20%

Goodwill and Intangible Assets, Net - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Finite Lived Intangible Assets [Line Items]
Goodwill impairment	$ 0	$ 0	$ 0
Impairment of intangible assets	0	0	0
Impairment of other long lived assets	0	0	$ 0
Adelphic
Finite Lived Intangible Assets [Line Items]
Goodwill	$ 12,400,000	$ 12,400,000