Viant Technology (NASDAQ: DSP) CEO sells shares to cover RSU tax bill

Rhea-AI Filing Summary

Viant Technology Inc. CEO and Chairman Timothy Vanderhook reported a sale of 9,125 shares of Class A Common Stock at $11.10 per share. According to the footnote, the shares were sold in a transaction instituted by the company on his behalf to cover estimated taxes tied to the vesting and settlement of restricted stock units, rather than as a discretionary portfolio move. Following this tax-related sale, he directly holds 208,880 shares.

Insider Trade Summary

Net Seller: 9,125 shares ($101,288)

Net Sell 1 txn

Insider Vanderhook Timothy

Role CEO and Chairman

Sold 9,125 shs ($101K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	9,125	$11.10	$101K

Holdings After Transaction: Class A Common Stock — 208,880 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Shares sold: 9,125 shares Sale price: $11.10 per share Post-transaction holdings: 208,880 shares

3 metrics

Shares sold 9,125 shares Class A Common Stock, transaction dated 2026-06-15

Sale price $11.10 per share Open-market sale to cover estimated taxes

Post-transaction holdings 208,880 shares Direct ownership after reported sale

Key Terms

restricted stock units, open-market sale, Class A Common Stock

3 terms

restricted stock units financial

"vesting and settlement of restricted stock units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

open-market sale financial

"transaction_action: open-market sale"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Class A Common Stock financial

"security_title: Class A Common Stock"

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

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Form 4 Insider Transactions: What Each Field Means →

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 CALIFORNIA 92612

(City) (State) (Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/15/2026

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

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

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

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	06/15/2026		S(1)		9,125	D	$11.1	208,880	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 estimated taxes associated with the vesting and settlement of restricted stock units.

Remarks:

	/s/ Larry Madden, Attorney-in-Fact for Timothy Vanderhook	06/15/2026
	** 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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

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

Timothy Vanderhook reported selling 9,125 shares of Viant Technology Class A Common Stock at $11.10 per share. The transaction was recorded on a Form 4 and reflects activity in his direct ownership position as CEO and Chairman.

Why did Viant Technology CEO Timothy Vanderhook sell 9,125 DSP shares?

The shares were sold to cover estimated taxes related to vesting and settlement of restricted stock units. The company instituted this transaction on his behalf, indicating it was a tax-driven event rather than a discretionary open-market portfolio decision.

At what price were Timothy Vanderhook’s Viant Technology shares sold?

The 9,125 shares of Viant Technology Class A Common Stock were sold at $11.10 per share. This per-share price is disclosed in the Form 4 transaction details for the non-derivative open-market sale code S.

How many Viant Technology shares does Timothy Vanderhook hold after this Form 4 transaction?

After the tax-related sale, Timothy Vanderhook holds 208,880 shares of Viant Technology Class A Common Stock directly. This post-transaction share count is reported in the Form 4 as his direct ownership position.

What does the tax-related footnote on Timothy Vanderhook’s Form 4 for DSP mean?

The footnote explains that shares were sold in a transaction instituted by Viant Technology to cover estimated taxes from restricted stock unit vesting. It clarifies the sale was a tax-withholding type event instead of a purely discretionary sell order.