| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Saltz Aaron | CHIEF LEGAL OFFICER | C/O MAGNITE, INC., 1250 BROADWAY, 15TH FLOOR, NEW YORK | /s/ Aaron Saltz | 29 Aug 2025 | 0001807986 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | MGNI | Common Stock | Sale | $323,346 | -12,403 | -5.1% | $26.07 | 229,781 | 29 Aug 2025 | Direct |