Viant COO sells shares to cover RSU taxes

Viant Technology Inc. Chief Operating Officer Christopher Vanderhook reported an open-market sale of Class A Common Stock.

Rhea-AI Filing Summary

Viant Technology Inc. Chief Operating Officer Christopher Vanderhook reported an open-market sale of Class A Common Stock. He sold 9,125 shares at a price of $11.10 per share. After this transaction, he directly holds 293,880 shares of Viant Technology stock.

According to the footnote, the shares were sold in a transaction instituted by Viant on Vanderhook's behalf to cover estimated taxes related to the vesting and settlement of restricted stock units, indicating this was a tax-related, administrative sale rather than a discretionary portfolio move.

Insider Trade Summary

Net Seller: 9,125 shares

Net Sell 1 txn

Insider Vanderhook Christopher

Role Chief Operating Officer

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 — 293,880 shares (Direct)

Footnotes (1)

1. F1. 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.

Key Figures

Shares sold: 9,125 shares Sale price per share: $11.10 per share Shares held after sale: 293,880 shares +2 more

5 metrics

Shares sold 9,125 shares Class A Common Stock sold in open-market transaction

Sale price per share $11.10 per share Price for Viant Technology Class A Common Stock

Shares held after sale 293,880 shares Direct holdings following reported transaction

Sell transactions count 1 transaction Net-sell activity in this Form 4

Net buy/sell shares -9,125 shares Net-sell direction in transactionSummary

Key Terms

Class A Common Stock, open-market sale, restricted stock units, ten percent owner, +1 more

5 terms

Class A Common Stock financial

"He sold 9,125 shares of Class A Common Stock at a price of $11.10 per share."

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.

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.

restricted stock units financial

"cover estimated taxes associated with the 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.

ten percent owner financial

"is_ten_percent_owner": 1"

net-sell financial

"netBuySellDirection": "net-sell""

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

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

Viant Technology reported that Chief Operating Officer Christopher Vanderhook sold 9,125 shares of Class A Common Stock at $11.10 per share. The company instituted this sale on his behalf to cover estimated taxes from vesting and settlement of restricted stock units.

Was the Viant Technology (DSP) insider sale a discretionary trade or tax-related?

The sale was tax-related, not a discretionary trade. A footnote explains Viant initiated the 9,125-share sale on Christopher Vanderhook’s behalf to cover estimated taxes tied to vesting and settlement of restricted stock units, indicating an administrative transaction.

How many Viant Technology (DSP) shares did Christopher Vanderhook retain after the reported sale?

After selling 9,125 shares, Christopher Vanderhook directly holds 293,880 shares of Viant Technology Class A Common Stock. This figure reflects his remaining reported position following the tax-related sale carried out to cover restricted stock unit vesting taxes.

What price was received in the Viant Technology (DSP) insider share sale?

The reported sale of Viant Technology Class A Common Stock by Christopher Vanderhook occurred at $11.10 per share. This price applies to the 9,125 shares sold in the tax-related transaction initiated to cover estimated obligations from restricted stock unit vesting.

What role does Christopher Vanderhook hold at Viant Technology (DSP) in this Form 4 filing?

In this Form 4, Christopher Vanderhook is identified as Chief Operating Officer, a director, and a ten percent owner of Viant Technology. These roles provide context for the reported tax-related sale of 9,125 shares of Class A Common Stock at $11.10 per share.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Accepted by SEC EDGAR 06/15/2026 - 08:41 PM EDT 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 Christopher

(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)
	Chief Operating Officer

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	293,880	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 Christopher 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)