| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Ballhaus William Francis JR | Director | 12525 CHADRON AVE, HAWTHORNE | /s/ William Ballhaus | 15 Sep 2025 | 0001490925 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | OSIS | Common Stock | Sale | $133,666 | -562 | -2.1% | $237.84 | 25,600 | 12 Sep 2025 | Ballhaus Trust - See Footnote | F1 |
| holding | OSIS | Common Stock | 3,701 | 12 Sep 2025 | Direct |
| Id | Content |
|---|---|
| F1 | Ballhaus Trust U/A 1/25/02 Dr. William Ballhaus Jr. and Jane K Ballhaus Trustees. |