Timothy Vanderhook - Sep 15, 2025 Form 4 Insider Report for Viant Technology Inc. (DSP)

Role
CEO and Chairman, Director, 10%+ Owner
Signature
/s/ Larry Madden, Attorney-in-Fact for Timothy Vanderhook
Stock symbol
DSP
Transactions as of
Sep 15, 2025
Transactions value $
-$3,085,428
Form type
4
Date filed
9/17/2025, 06:38 PM
Previous filing
Jun 13, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Vanderhook Timothy CEO and Chairman, Director, 10%+ Owner C/O VIANT TECHNOLOGY INC., 2722 MICHELSON DRIVE, SUITE 100, IRVINE /s/ Larry Madden, Attorney-in-Fact for Timothy Vanderhook 2025-09-17 0001843103

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction DSP Class A Common Stock Sale -$85.4K -8.78K -2.41% $9.73 356K Sep 15, 2025 Direct F1, F2
transaction DSP Class A Common Stock Options Exercise $0 +314K $0.00 314K Sep 16, 2025 By Capital V LLC F3, F4
transaction DSP Class B Common Stock Disposed to Issuer $0 -314K -3.31% $0.00 9.17M Sep 16, 2025 By Capital V LLC F4, F5
transaction DSP Class A Common Stock Disposed to Issuer -$3M -314K -100% $9.56 0 Sep 17, 2025 By Capital V LLC F4, F6
holding DSP Class B Common Stock 6.63M Sep 15, 2025 Direct
holding DSP Class B Common Stock 302K Sep 15, 2025 By GRAT F7, F8
holding DSP Class B Common Stock 302K Sep 15, 2025 By GRAT F7, F9
holding DSP Class B Common Stock 302K Sep 15, 2025 By GRAT F7, F10
holding DSP Class B Common Stock 302K Sep 15, 2025 By GRAT F7, F11

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction DSP Class B Units Options Exercise $0 -314K -3.31% $0.00 9.17M Sep 16, 2025 Class A Common Stock 314K By Capital V LLC F3, F4
holding DSP Class B Units 6.63M Sep 15, 2025 Class A Common Stock 0 Direct F3
holding DSP Class B Units 302K Sep 15, 2025 Class A Common Stock 0 By GRAT F3, F8, F12
holding DSP Class B Units 302K Sep 15, 2025 Class A Common Stock 0 By GRAT F3, F9, F12
holding DSP Class B Units 302K Sep 15, 2025 Class A Common Stock 0 By GRAT F3, F10, F12
holding DSP Class B Units 302K Sep 15, 2025 Class A Common Stock 0 By GRAT F3, F11, F12
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Shares were sold in a transaction instituted by the Issuer on the Reporting Person's behalf to cover estimated taxes associated with the vesting and settlement of restricted stock units.
F2 On December 20, 2024, the Reporting Person filed a Form 4, which inadvertently reported a gift of 31,556 shares of the Issuer's Class A common stock when the actual number of shares gifted was 31,566. The total number of shares of Class A common stock held by the Reporting Person has been corrected herein accordingly.
F3 The Class B Units of Viant Technology LLC ("Class B Units") are exchangeable, at the holder's option, on a one-for-one basis into shares of Class A common stock of the Issuer. Upon exchange of a Class B Unit, the corresponding share of Class B common stock will be automatically cancelled.
F4 The Reporting Person holds a one-third interest in Capital V LLC and may therefore be deemed to have an indirect pecuniary interest in one-third of Capital V LLC's total holdings.
F5 Reflects the cancellation for no consideration of a number of shares of Class B common stock of the Issuer in connection with the redemption by the Reporting Person of an equal number of Class B Units for Class A common stock.
F6 Pursuant to the Unit Exchange and Purchase Agreement dated September 15, 2025, the Issuer has purchased an aggregate of 941,777 shares of Class A common stock from Capital V LLC for an aggregate price of approximately $9,000,000. The Reporting Person sold such shares to the Issuer in connection with tax planning.
F7 The change in the number of shares held by each GRAT reflects an annuity payment to the Reporting Person's direct holdings.
F8 Securities held by the Eve Vanderhook 2024 grantor retained annuity trust.
F9 Securities held by the Stella Vanderhook 2024 grantor retained annuity trust.
F10 Securities held by the Gray Vanderhook 2024 grantor retained annuity trust.
F11 Securities held by the Kingston Vanderhook 2024 grantor retained annuity trust.
F12 The change in the number of Class B Units held by each GRAT reflects an annuity payment to the Reporting Person's direct holdings.