Sec Form 4 Filing - MADDEN LARRY @ Viant Technology Inc. - 2021-09-13

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person MADDEN LARRY 2. Issuer Name and Ticker or Trading Symbol Viant Technology Inc. [ DSP] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chief Financial Officer (Last) (First) (Middle) C/O VIANT TECHNOLOGY INC., 2722 MICHELSON DRIVE, SUITE 100 3. Date of Earliest Transaction (MM/DD/YY) 09/13/2021 (Street) IRVINE, CA92612 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Class A Common Stock 09/13/2021 S 18,404 ( 1 ) D $ 12.51 416,075 D Class A Common Stock 0 ( 2 ) I By Viant Technology Equity Plan LLC Class B Common Stock 474,356 ( 3 ) I By Viant Technology Equity Plan LLC

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other MADDEN LARRY C/O VIANT TECHNOLOGY INC. 2722 MICHELSON DRIVE, SUITE 100 IRVINE, CA92612 Chief Financial Officer Signatures /s/ Larry Madden 09/15/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Represents the sale of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of 31,876 restricted stock units on September 10, 2021. These sales are mandated by the Issuer's election under its equity incentive plan to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and do not represent discretionary trades by the Reporting Person. ( 2 )Represents a correction to an aggregation of direct and indirect holdings of Class A Common Stock on the Reporting Person's Form 4 filed on February 11, 2021 (the "February Form 4"). The correct amount in Box 5 of the third row of the February Form 4 is 15,000, and the correct amount in Box 5 of the fourth row of the February Form 4 and in the second row of the Reporting Person's Form 4 filed August 11, 2021 is 0. No Class A Common Stock is held by Viant Technology Equity Plan LLC for the account of the Reporting Person. ( 3 )The Reporting Person's indirect Class B Common Stock holdings are being reported on this Form 4 to clarify the number of securities of the Issuer indirectly held by the Reporting Person through Viant Technology Equity Plan LLC. No securities of the Issuer are held by the Reporting Person other than those shares of Class A Common Stock held directly and Class B Common Stock held indirectly as reported on this Form 4.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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