Christopher Vanderhook - 16 Dec 2025 Form 4 Insider Report for Viant Technology Inc. (DSP)

Role
Chief Operating Officer, Director, 10%+ Owner
Signature
/s/ Larry Madden, Attorney-in-Fact for Christopher Vanderhook
Issuer symbol
DSP
Transactions as of
16 Dec 2025
Transactions value $
-$224,853
Form type
4
Filing time
18 Dec 2025, 21:01:59 UTC
Previous filing
17 Sep 2025
Next filing
19 Dec 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Vanderhook Christopher Chief Operating Officer, Director, 10%+ Owner C/O VIANT TECHNOLOGY INC., 2722 MICHELSON DRIVE, SUITE 100, IRVINE /s/ Larry Madden, Attorney-in-Fact for Christopher Vanderhook 18 Dec 2025 0001843104

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction DSP Class A Common Stock Options Exercise $0 +12.5K $0.00 12.5K 16 Dec 2025 By Capital V LLC F1, F2
transaction DSP Class B Common Stock Disposed to Issuer $0 -12.5K -0.14% $0.00 9.16M 16 Dec 2025 By Capital V LLC F2, F3
transaction DSP Class A Common Stock Sale -$107K -9.1K -2.55% $11.70 347K 17 Dec 2025 Direct F4
transaction DSP Class A Common Stock Sale -$58.7K -5K -40% $11.74 7.5K 17 Dec 2025 By Capital V LLC F2, F5, F6
transaction DSP Class A Common Stock Sale -$59.6K -5K -66.67% $11.93 2.5K 18 Dec 2025 By Capital V LLC F2, F5, F7

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 -12.5K -0.14% 9.16M 16 Dec 2025 Class A Common Stock 12.5K By Capital V LLC F1, F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 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.
F2 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.
F3 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.
F4 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.
F5 Shares sold pursuant to a 10b5-1 plan adopted by Capital V LLC on March 18, 2025, as amended on September 17, 2025.
F6 The price reported in Column 4 is a weighted average price, based on the Reporting Person's pro rata portion of a total of 15,000 shares of Class A Common Stock sold on behalf of Capital V LLC. These shares were sold in multiple transactions at prices ranging from $11.485 to $12.235. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F7 The price reported in Column 4 is a weighted average price, based on the Reporting Person's pro rata portion of a total of 15,000 shares of Class A Common Stock sold on behalf of Capital V LLC. These shares were sold in multiple transactions at prices ranging from $11.62 to $12.175. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.