| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Kain Emily | Chief Human Resource Officer | 1360 POST OAK BLVD., SUITE 100, MC-14-1, HOUSTON | /s/ David Taylor, as attorney in fact for the Reporting Person | 10 Mar 2026 | 0001801505 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | STC | Common Stock | Options Exercise | +3,195 | +61% | 8,419 | 08 Mar 2026 | Direct | F1 | ||
| transaction | STC | Common Stock | Tax liability | -778 | -9.2% | $67.00* | 7,641 | 08 Mar 2026 | Direct | ||
| transaction | STC | Common Stock | Options Exercise | +710 | +9.3% | 8,351 | 08 Mar 2026 | Direct | F1 | ||
| transaction | STC | Common Stock | Tax liability | -173 | -2.1% | $67.00* | 8,178 | 08 Mar 2026 | Direct |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | STC | Restricted Stock Units | Options Exercise | -3,195 | -100% | $0.000000* | 0 | 08 Mar 2026 | Common Stock | 3,195 | Direct | F1, F2 | ||
| transaction | STC | Restricted Stock Units | Options Exercise | -710 | -100% | $0.000000* | 0 | 08 Mar 2026 | Common Stock | 710 | Direct | F1, F3 |
| Id | Content |
|---|---|
| F1 | Each restricted stock unit represents a contingent right to receive one share of STC Common Stock. |
| F2 | The restricted stock units vested in full on March 8, 2026. |
| F3 | The restricted stock units vested in three equal annual installments on March 8, 2024, March 8, 2025, and March 8, 2026. |