| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| MADDEN LARRY | Chief Financial Officer | C/O VIANT TECHNOLOGY INC., 2722 MICHELSON DRIVE, SUITE 100, IRVINE | /s/ Larry Madden | 2025-09-17 | 0001284309 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | DSP | Class A Common Stock | Sale | -$127K | -13K | -2.98% | $9.73 | 423K | Sep 15, 2025 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | 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. |