Timothy Vanderhook - 16 Jun 2026 Form 4 Insider Report for Viant Technology Inc. (DSP)

Reporting relationship: CEO and Chairman, Director, 10%+ Owner
Issuer ticker: DSP
Reported as of: 16 Jun 2026
Net transaction value: -$138,710
SEC form: 4
Accepted by SEC: 18 Jun 2026, 19:08:36 UTC
Prior SEC filing: 15 Jun 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 18 Jun 2026.

Key facts

This page summarizes Timothy Vanderhook's Form 4 filing for Viant Technology Inc. (DSP).
6 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 18 Jun 2026, 19:08.

Change

Previous filing in this sequence was filed on 15 Jun 2026.
Current net transaction value: -$138,710.

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: 18 Jun 2026

Reported non-derivative transactions

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

DSP transaction

Class A Common Stock

Options Exercise

Transaction value
Shares: +12,500
Change %
Price: $0.000000^*
Shares after: 12,500
Date: 16 Jun 2026
Ownership: By Capital V LLC
Footnotes: F1, F2

DSP transaction

Class B Common Stock

Disposed to Issuer

Transaction value
Shares: -12,500
Change %: -0.14%
Price: $0.000000^*
Shares after: 9,082,275
Date: 16 Jun 2026
Ownership: By Capital V LLC
Footnotes: F2, F3

DSP transaction

Class A Common Stock

Sale

Transaction value: $55,857
Shares: -5,000
Change %: -40%
Price: $11.17
Shares after: 7,500
Date: 16 Jun 2026
Ownership: By Capital V LLC
Footnotes: F2, F4, F5

DSP transaction

Class A Common Stock

Sale

Transaction value: $55,442
Shares: -5,000
Change %: -67%
Price: $11.09
Shares after: 2,500
Date: 17 Jun 2026
Ownership: By Capital V LLC
Footnotes: F2, F4, F6

DSP transaction

Class A Common Stock

Sale

Transaction value: $27,412
Shares: -2,500
Change %: -100%
Price: $10.96
Shares after: 0
Date: 18 Jun 2026
Ownership: By Capital V LLC
Footnotes: F2, F4, F7

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

DSP transaction Derivative

Class B Units

Options Exercise

Transaction value
Shares: -12,500
Change %: -0.14%
Price
Shares after: 9,082,275
Date: 16 Jun 2026
Ownership: By Capital V LLC
Underlying class: Class A Common Stock
Underlying amount: 12,500
Exercise price
Footnotes: F1, F2

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

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 7 footnotes

Footnote 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.

Footnote 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.

Footnote 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 Capital V LLC of an equal number of Class B Units for Class A common stock.

Footnote F4

Shares sold pursuant to a 10b5-1 plan adopted by Capital V LLC on March 18, 2025, as amended on September 17, 2025.

Footnote F5

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 $10.77 to $11.43. 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.

Footnote 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 $10.91 to $11.50. 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.

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 7,500 shares of Class A Common Stock sold on behalf of Capital V LLC. These shares were sold in multiple transactions at prices ranging from $10.665 to $11.23. 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.