| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Vanderhook Timothy | CEO and Chairman, Director, 10%+ Owner | C/O VIANT TECHNOLOGY INC., 2722 MICHELSON DRIVE, SUITE 100, IRVINE | /s/ Larry Madden, Attorney-in-Fact for Timothy Vanderhook | 12 Mar 2026 | 0001843103 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | DSP | Class A Common Stock | Disposed to Issuer | -44,177 | -17% | $10.50* | 218,005 | 10 Mar 2026 | Direct | F1 | |
| holding | DSP | Class A Common Stock | 420 | 10 Mar 2026 | By Capital V LLC |
| Id | Content |
|---|---|
| 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. |