Viant Technology (DSP) CFO reports tax-related sale of 13,477 shares

Rhea-AI Filing Summary

Viant Technology Inc.'s Chief Financial Officer, Larry Madden, reported a sale of company stock in connection with equity compensation. On 12/17/2025, he sold 13,477 shares of Class A common stock at a price of $11.704 per share. According to the footnote, these shares were sold in a transaction instituted by the company on his behalf to cover withholding tax tied to the vesting and settlement of restricted stock units.

After this tax-related sale, Madden directly beneficially owned 409,778 shares of Viant Technology Inc. Class A common stock. The filing indicates this report is for one reporting person and confirms his role as Chief Financial Officer of the issuer.

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

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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^*

MADDEN LARRY

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Financial Officer

3. Date of Earliest Transaction (Month/Day/Year)
12/17/2025

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	12/17/2025		S		13,477(1)	D	$11.704	409,778	D

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. Shares were sold in a transaction instituted by the Issuer on the Reporting Person's behalf to cover withholding tax associated with the vesting and settlement of restricted stock units.

Remarks:

	/s/ Larry Madden	12/18/2025
	** 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).
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FAQ

What insider transaction did Viant Technology Inc. (DSP) disclose?

Viant Technology Inc. disclosed that its Chief Financial Officer, Larry Madden, sold 13,477 shares of Class A common stock on 12/17/2025 at $11.704 per share.

Why did Viant Technology Inc. (DSP) CFO Larry Madden sell 13,477 shares?

The filing explains that the 13,477 shares were sold in a transaction instituted by the company on Madden's behalf to cover withholding tax associated with the vesting and settlement of restricted stock units.

How many Viant Technology Inc. (DSP) shares does the CFO hold after the reported sale?

Following the reported transaction, Chief Financial Officer Larry Madden beneficially owned 409,778 shares of Viant Technology Inc. Class A common stock, held as direct ownership.

What is Larry Madden’s role and relationship to Viant Technology Inc. (DSP)?

Larry Madden is identified in the filing as an officer of Viant Technology Inc., serving as its Chief Financial Officer, and the report is filed by one reporting person.

What type of SEC filing reported the Viant Technology Inc. (DSP) insider sale?

The transaction by Viant Technology Inc.'s Chief Financial Officer was reported on an SEC insider ownership form that discloses changes in beneficial ownership of company equity securities.