STOCK TITAN

Viant Technology (DSP) CFO sells 35,835 shares in pre-planned Form 4 trades

Filing Impact
(High)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

Viant Technology Inc. Chief Financial Officer Larry Madden sold 35,835 shares of Class A Common Stock in open-market transactions. The sales occurred on May 8, 2026 and May 11, 2026 at weighted average prices between $10.86 and $12.09. According to the filing, these transactions were executed under a pre-arranged Rule 10b5-1 trading plan adopted on December 15, 2025, indicating they were scheduled in advance rather than timed discretionarily. After these sales, Madden continued to directly hold more than 500,000 shares of Viant Technology Class A Common Stock.

Positive

  • None.

Negative

  • None.

Insights

CFO’s 35,835-share sale is pre-planned and modest versus his stake.

The CFO of Viant Technology Inc., Larry Madden, reported selling 35,835 Class A shares through three open-market transactions at prices around $11–$12. The filing states these sales were made under a Rule 10b5-1 trading plan adopted on December 15, 2025, suggesting they were pre-scheduled.

Following the transactions, Madden still directly owns over 500,000 shares visible in this filing, so the sale represents only a small portion of his holdings. Given the pre-planned nature and limited scale relative to his remaining stake, the activity appears routine rather than thesis-changing for investors.

Insider MADDEN LARRY
Role Chief Financial Officer
Sold 35,835 shs ($417K)
Type Security Shares Price Value
Sale Class A Common Stock 13,826 $11.2907 $156K
Sale Class A Common Stock 3,471 $11.9456 $41K
Sale Class A Common Stock 18,538 $11.8498 $220K
Holdings After Transaction: Class A Common Stock — 521,335 shares (Direct, null)
Footnotes (1)
  1. Shares sold pursuant to a 10b5-1 plan adopted by the Reporting Person on December 15, 2025. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $11.31 to $12.09. 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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $10.86 to $11.82. 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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $11.86 to $12.015. 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.
Total shares sold 35,835 shares Net open-market sales reported in this Form 4
May 8, 2026 sale size 18,538 shares Class A Common Stock sold at $11.8498 weighted average
May 11, 2026 sale size (block 1) 13,826 shares Class A Common Stock sold at $11.2907 weighted average
May 11, 2026 sale size (block 2) 3,471 shares Class A Common Stock sold at $11.9456 weighted average
10b5-1 plan adoption date December 15, 2025 Date CFO adopted trading plan governing these sales
Rule 10b5-1 plan regulatory
"Shares sold pursuant to a 10b5-1 plan adopted by the Reporting Person on December 15, 2025."
A Rule 10b5-1 plan is a prearranged, written schedule that lets corporate insiders buy or sell company stock at set times or amounts, even if they later learn material nonpublic information. Think of it like setting an automatic thermostat for trades: it creates a clear record that trades were planned in advance, reducing the risk of insider-trading accusations and helping investors trust that insider transactions are routine rather than based on secret information.
weighted average price financial
"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions..."
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
open-market sale financial
"transaction_action: open-market sale, transaction_code_description: Sale in open market or private transaction"
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 in each reported transaction"
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.
SEC Form 4
FORM 4UNITED 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).
X
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 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)
Director10% Owner
XOfficer (give title below)Other (specify below)
Chief Financial Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/08/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Class A Common Stock05/08/2026S(1)18,538D$11.8498(2)535,161D
Class A Common Stock05/11/2026S(1)13,826D$11.2907(3)521,335D
Class A Common Stock05/11/2026S(1)3,471D$11.9456(4)517,864D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. Shares sold pursuant to a 10b5-1 plan adopted by the Reporting Person on December 15, 2025.
2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $11.31 to $12.09. 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.
3. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $10.86 to $11.82. 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.
4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $11.86 to $12.015. 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.
Remarks:
/s/ Larry Madden05/12/2026
** Signature of Reporting PersonDate
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 did Viant Technology (DSP) CFO Larry Madden report in this Form 4?

Viant Technology CFO Larry Madden reported selling 35,835 shares of Class A Common Stock. The sales occurred in three open-market transactions on May 8 and May 11, 2026, at weighted average prices between about $10.86 and $12.09 per share.

How many Viant Technology (DSP) shares did the CFO sell and at what prices?

Larry Madden sold a total of 35,835 Viant Technology Class A shares. Individual trades covered 18,538, 13,826, and 3,471 shares at weighted average prices of $11.8498, $11.2907, and $11.9456, with overall trade ranges from $10.86 to $12.09 per share.

Were the Viant Technology (DSP) CFO’s stock sales made under a Rule 10b5-1 plan?

Yes. The filing states the shares were sold pursuant to a Rule 10b5-1 trading plan adopted by Larry Madden on December 15, 2025. Such plans allow executives to pre-schedule trades, helping separate routine liquidity management from discretionary market-timed transactions.

How many Viant Technology (DSP) shares does the CFO still own after these sales?

After the reported transactions, Larry Madden continues to directly hold more than 500,000 shares of Viant Technology Class A Common Stock. This indicates the 35,835 shares sold represent a relatively small portion of his overall reported equity position.

What type of security did the Viant Technology (DSP) CFO sell in this insider transaction?

The reported transactions all involved Viant Technology Inc. Class A Common Stock. No derivative securities, options, or other equity instruments appear in this filing, and the derivative position summary is empty, indicating only common stock sales were reported.