| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Moriarty Sean Thomas | VP & GM Surfactants | 1101 SKOKIE BOULEVARD, SUITE 500, NORTHBROOK | /s/ James A. HArt, Attorney-in-Fact for Sean T. Moriarty | 19 Feb 2026 | 0001716333 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | SCL | Common Stock | Options Exercise | $30,207 | +455 | +3.3% | $66.39 | 14,303 | 17 Feb 2026 | Direct | F1 |
| transaction | SCL | Common Stock | Tax liability | $10,490 | -158 | -1.1% | $66.39 | 14,145 | 17 Feb 2026 | Direct | F2 |
| holding | SCL | Common Stock | 4,478 | 17 Feb 2026 | By ESOP II Trust |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | SCL | Restricted Stock Units | Options Exercise | $0 | -455 | -100% | $0.000000 | 0 | 17 Feb 2026 | Restricted Stock Units | 455 | Direct | F1, F3, F4 |
| Id | Content |
|---|---|
| F1 | The restricted stock units ("RSUs") were settled in shares of common stock per the terms of the award. |
| F2 | Withholding of shares to satisfy tax liability on the vesting of RSUs. |
| F3 | Each restricted stock unit ("RSU") represents a contingent right to receive one share of Stepan Company common stock. |
| F4 | Vests ratably over three years beginning on the date shown. |