| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Olosky Michael | President and CEO, Director | 5956 W. LAS POSITAS BLVD, PLEASANTON | Cari Fisher, Attorney-in-Fact | 18 Feb 2026 | 0001833593 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | SSD | Common Stock | Award | $0 | +17,140 | +44% | $0.000000 | 56,478 | 17 Feb 2026 | Direct | F1, F2 |
| transaction | SSD | Common Stock | Tax liability | $330,654 | -1,582 | -2.8% | $209.01 | 54,896 | 17 Feb 2026 | Direct | F3, F4 |
| Id | Content |
|---|---|
| F1 | At the election of the Reporting Person, the shares of common stock acquired pursuant to this filing have been deferred under the Simpson Manufacturing Co., Inc. Nonqualified Plan (the "Plan") and will settle on a future date selected by the Reporting Person at the time of his or her deferral election. |
| F2 | Represents performance stock units granted in January 2023, for which the performance and vesting periods ended December 31, 2025, and for which the settlement date was February 17, 2026. |
| F3 | Represents shares of common stock withheld by the Company to satisfy the tax withholding obligation for the reporting person's restricted stock units that vested on February 17, 2026. |
| F4 | Includes 17,210 restricted stock units that have not yet vested and 34,188 shares of common stock deferred under the Plan which will settle pursuant to the applicable terms of the Reporting Person's deferral election. |