| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Leveton Jay | President | C/O STAGWELL INC., ONE WORLD TRADE CENTER, FLOOR 65, NEW YORK | /s/ Jay Leveton | 10 Mar 2026 | 0001876913 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | STGW | Class A Common Stock | Tax liability | -44,230 | -1.7% | $5.24* | 2,577,168 | 07 Mar 2026 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | Represents shares withheld by the issuer to satisfy tax withholding requirements on the nonreportable vesting of restricted stock units. |