Viant CEO returns shares for tax withholding

Viant Technology Inc. CEO and Chairman Timothy Vanderhook returned 44,177 shares of Class A Common Stock to the company at $10.50 per share.

Rhea-AI Filing Summary

Viant Technology Inc. CEO and Chairman Timothy Vanderhook returned 44,177 shares of Class A Common Stock to the company at $10.50 per share. According to the disclosure, these shares were repurchased by the issuer to cover estimated taxes tied to the vesting of 82,866 restricted stock units on March 10, 2026. After this tax-related disposition to the issuer, Vanderhook directly holds 218,005 Class A shares and indirectly holds 420 additional shares through Capital V LLC.

Insider Trade Summary

Disposition: 44,177 shares

Disposition 2 txns

Insider Vanderhook Timothy

Role CEO and Chairman

Type	Security	Shares	Price	Value
Disposition	Class A Common Stock	44,177	$10.50	$464K
holding	Class A Common Stock	--	--	--

Holdings After Transaction: Class A Common Stock — 218,005 shares (Direct); Class A Common Stock — 420 shares (Indirect, By Capital V LLC)

Footnotes (1)

1. 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 82,866 restricted stock units on March 10, 2026.

FAQ

What insider transaction did Viant Technology (DSP) report for Timothy Vanderhook?

Viant Technology reported that CEO and Chairman Timothy Vanderhook returned 44,177 Class A shares to the company. The shares were repurchased by Viant to cover estimated taxes from the vesting of 82,866 restricted stock units on March 10, 2026.

Was Timothy Vanderhook’s Viant Technology (DSP) transaction an open-market sale?

The transaction was not an open-market sale. The filing states the shares were repurchased by Viant Technology from Timothy Vanderhook to cover estimated tax obligations related to the vesting of 82,866 restricted stock units on March 10, 2026.

How many Viant Technology (DSP) shares does Timothy Vanderhook hold after this Form 4?

After the reported transaction, Timothy Vanderhook holds 218,005 Class A shares directly. He also has an indirect holding of 420 Class A shares through Capital V LLC, as described in the ownership details of the Form 4 filing.

What price per share was used in Viant Technology (DSP) CEO’s tax-related share repurchase?

The issuer repurchased 44,177 Class A shares from Timothy Vanderhook at a price of $10.50 per share. This repurchase amount corresponds to estimated taxes owed upon the vesting of 82,866 restricted stock units on March 10, 2026.

Why did Viant Technology (DSP) repurchase shares from its CEO Timothy Vanderhook?

Viant Technology repurchased the shares to cover estimated taxes due on the vesting of 82,866 restricted stock units awarded to Timothy Vanderhook. The company’s repurchase effectively satisfied the tax obligation using 44,177 Class A shares at $10.50 per share.

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Accepted by SEC EDGAR 03/12/2026 - 06:35 PM Learn about SEC filing dates

SEC Form 4

FORM 4

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
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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

Check this box to indicate that a 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). See Instruction 10.

1. Name and Address of Reporting Person^*

Vanderhook Timothy

(Last) (First) (Middle)

C/O VIANT TECHNOLOGY INC.

2722 MICHELSON DRIVE, SUITE 100

(Street)

IRVINE CA 92612

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Viant Technology Inc. [ DSP ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	X	10% Owner
X	Officer (give title below)		Other (specify below)
	CEO and Chairman

3. Date of Earliest Transaction (Month/Day/Year)
03/10/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	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	03/10/2026		D		44,177(1)	D	$10.5	218,005	D
Class A Common Stock								420	I	By Capital V 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 (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	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 (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (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: 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

Explanation of Responses:

1. 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 82,866 restricted stock units on March 10, 2026.

Remarks:

	/s/ Larry Madden, Attorney-in-Fact for Timothy Vanderhook	03/12/2026
	** Signature of Reporting Person	Date
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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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