Timothy Vanderhook - 10 Sep 2026 Form 4 Insider Report for Viant Technology Inc. (DSP)

Reporting relationship: CEO and Chairman, Director, 10%+ Owner
Issuer ticker: DSP
Reported as of: 10 Sep 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 14 Sep 2026, 19:30:17 UTC
Prior SEC filing: 23 Jul 2026
Source filing: View source filing
Reporting owner signature: /s/ Larry Madden, Attorney-in-Fact for Timothy Vanderhook

Key filing fact

Timothy Vanderhook filed Form 4 for Viant Technology Inc. (DSP) on 14 Sep 2026.

Key facts

This page summarizes Timothy Vanderhook's Form 4 filing for Viant Technology Inc. (DSP).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 14 Sep 2026, 19:30.

Change

Previous filing in this sequence was filed on 23 Jul 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001843103 Primary reporting owner

Vanderhook Timothy

Relationship: CEO and Chairman, Director, 10%+ Owner
Address: C/O VIANT TECHNOLOGY INC., 2722 MICHELSON DRIVE, SUITE 100, IRVINE
Signature: /s/ Larry Madden, Attorney-in-Fact for Timothy Vanderhook
Signature date: 14 Sep 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

DSP transaction

Class A Common Stock

Disposed to Issuer

Transaction value
Shares: -8,636
Change %: -4.1%
Price: $12.74^*
Shares after: 200,244
Date: 10 Sep 2026
Ownership: Direct
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

Represents shares repurchased by the Issuer from the Reporting Person in the amount of estimated taxes to be paid by the Reporting Person in connection with the vesting of 16,198 restricted stock units on September 10, 2026.