| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Retzloff Steven F. | Executive Chairman, Director | 9 GREENWAY PLAZA, SUITE 110, HOUSTON | /s/ Justin M. Long, attorney-in-fact | 03 Oct 2025 | 0001183121 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | STEL | Common Stock | Disposed to Issuer | $0 | -5,784 | -4.3% | $0.000000 | 127,185 | 01 Oct 2025 | Direct | F1 |
| transaction | STEL | Common Stock | Tax liability | $29,460 | -982 | -0.77% | $30.00 | 126,203 | 01 Oct 2025 | Direct | F2 |
| holding | STEL | Common Stock | 25,531 | 01 Oct 2025 | By Retzloff Industries, Inc. | ||||||
| holding | STEL | Common Stock | 378,240 | 01 Oct 2025 | By Retzloff Holdings, LTD. | ||||||
| holding | STEL | Common Stock | 12,598 | 01 Oct 2025 | By SF Retzloff Family Limited Partnership, LTD. |
| Id | Content |
|---|---|
| F1 | Represents forfeiture of performance shares that were eligible to vest based on certain financial performance objectives. |
| F2 | Represents shares withheld to satisfy tax liability for 10/01/2025 vesting of restricted shares of Common Stock previously reported. |