OPTT's three largest insider shareholders as of June 02, 2026 are Terence James Cryan (Director, 2.33Mn shares), Philipp Stratmann (President And Ceo, 1.93Mn shares), Diana G Purcel (Director, 1.33Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Diana G Purcel | - | 1,327,554 | 0 | 21 Jan, 2026 |
| Robert Patrick Powers | Senior Vp And Cfo | 1,037,129 | 0 | 06 Mar, 2026 |
| Terence James Cryan | - | 2,333,368 | 0 | 28 Jan, 2026 |
| Clyde W Hewlett | - | 1,133,075 | 0 | 28 Jan, 2026 |
| Peter E. Slaiby | - | 1,052,014 | 0 | 21 Jan, 2026 |
| Philipp Stratmann | President And Ceo | 1,932,356 | 0 | 06 Mar, 2026 |
| Corliss J. Montesi | - | 151,189 | 0 | 28 Jan, 2026 |
| Joseph Dipietro | Chief Accounting Officer | 8,691 | 0 | 24 Jan, 2024 |
| Anderson Natalie M. Lorenz | - | 404,677 | 0 | 21 Jan, 2025 |
| Matthew Burdyny | Chief Commercial Officer | 173,126 | 0 | 14 Mar, 2025 |
| Jim Raymond Thompson | - | 151,189 | 0 | 28 Jan, 2026 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 05 Mar, 2026 | Philipp Stratmann | Common Stock | D | 901,096 | $0.43 | 1,932,356 | D | F |
| 05 Mar, 2026 | Philipp Stratmann | Common Stock | D | 901,096 | $0.43 | 1,932,356 | D | F |
| 05 Mar, 2026 | Robert Patrick Powers | Common Stock | D | 437,550 | $0.43 | 1,037,129 | D | F |
| 05 Mar, 2026 | Robert Patrick Powers | Common Stock | D | 437,550 | $0.43 | 1,037,129 | D | F |
| 30 Jan, 2026 | Robert Patrick Powers | Common Stock | A | 54,013 | - | 1,246,727 | D | A |
| 30 Jan, 2026 | Philipp Stratmann | Common Stock | A | 100,162 | - | 2,340,701 | D | A |
| 30 Jan, 2026 | Philipp Stratmann | Common Stock | A | 100,162 | - | 2,340,701 | D | A |
| 30 Jan, 2026 | Robert Patrick Powers | Common Stock | A | 54,013 | - | 1,246,727 | D | A |
| 30 Jan, 2026 | Philipp Stratmann | Common Stock | A | 100,198 | - | 2,440,899 | D | A |
| 30 Jan, 2026 | Philipp Stratmann | Common Stock | A | 100,198 | - | 2,440,899 | D | A |
| 30 Jan, 2026 | Robert Patrick Powers | Common Stock | A | 54,032 | - | 1,300,759 | D | A |
| 30 Jan, 2026 | Robert Patrick Powers | Common Stock | A | 54,032 | - | 1,300,759 | D | A |
| 30 Jan, 2026 | Philipp Stratmann | Common Stock | A | 392,553 | - | 2,833,452 | D | A |
| 30 Jan, 2026 | Robert Patrick Powers | Common Stock | A | 173,920 | - | 1,474,679 | D | A |
| 30 Jan, 2026 | Robert Patrick Powers | Common Stock | A | 173,920 | - | 1,474,679 | D | A |
| 30 Jan, 2026 | Philipp Stratmann | Common Stock | A | 392,553 | - | 2,833,452 | D | A |
| 30 Jan, 2026 | Philipp Stratmann | Restricted Stock Unit | A | 100,198 | $0.00 | 100,198 | D | M |
| 30 Jan, 2026 | Robert Patrick Powers | Restricted Stock Unit | A | 54,032 | $0.00 | 54,032 | D | M |
| 30 Jan, 2026 | Philipp Stratmann | Restricted Stock Unit | A | 100,198 | $0.00 | 100,198 | D | M |
| 30 Jan, 2026 | Robert Patrick Powers | Restricted Stock Unit | A | 54,032 | $0.00 | 54,032 | D | M |