| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Tappin Matthew | President, Software Products | 1400 POST OAK BOULEVARD, SUITE 560, HOUSTON | /s/ Sarah Dunn, attorney-in-fact | 23 Feb 2026 | 0001986259 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | STEM | Common Stock, Par Value $0.0001 Per Share | Sale | $4,172 | -366 | -14% | $11.40 | 2,237 | 20 Feb 2026 | Direct |