| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Greene Ryan | Chief Financial Officer | C/O STAGWELL INC., ONE WORLD TRADE CENTER, FLOOR 65, NEW YORK | /s/ Ryan Greene | 10 Mar 2026 | 0001876911 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | STGW | Class A Common Stock | Tax liability | -9,359 | -0.54% | $5.24* | 1,725,171 | 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. |