Omeros's top three insider shareholders as of April 25, 2026 are Gregory A Md Demopulos (Chairman, Ceo President, 1.73Mn shares), Gregory A Md Demopulos (Chairman, Ceo President, 1.47Mn shares), Peter A Md Demopulos (Director, 208.52K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Gregory A Md Demopulos | Chairman, Ceo President | 1,426,986 | 300,000 | 15 Oct, 2025 |
| Gregory A Md Demopulos | Chairman, Ceo President | 1,469,308 | 0 | 20 Feb, 2026 |
| Peter A Md Demopulos | - | 208,516 | 0 | 17 Nov, 2023 |
| Gregory A Md Demopulos | Chairman, Ceo President | 0 | 123,945 | 21 Nov, 2023 |
| Thomas J. Cable | - | 35,067 | 0 | 23 May, 2023 |
| Thomas F. Bumol | - | 0 | 10,000 | 14 Sep, 2023 |
| Arnold C Hanish | - | 0 | 10,000 | 09 Sep, 2021 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 18 Feb, 2026 | Gregory A Md Demopulos | Common stock | A | 400,000 | $10.27 | 1,826,986 | D | M |
| 18 Feb, 2026 | Gregory A Md Demopulos | Common stock | D | 357,678 | $11.93 | 1,469,308 | D | F |
| 18 Feb, 2026 | Gregory A Md Demopulos | Stock option (right to buy) | D | 400,000 | $0.00 | 0 | D | M |
| 12 Jan, 2026 | David J. Borges | Common stock | D | 30,000 | $12.72 | 0 | D | S |
| 13 Jan, 2026 | David J. Borges | Common stock | A | 30,000 | $3.06 | 30,000 | D | M |
| 13 Jan, 2026 | David J. Borges | Common stock | D | 30,000 | $12.31 | 0 | D | S |
| 13 Jan, 2026 | David J. Borges | Stock Option (right to buy) | D | 30,000 | $0.00 | 65,000 | D | M |
| 13 Oct, 2025 | Gregory A Md Demopulos | Common Stock | D | 600,000 | $0.00 | 1,426,986 | D | G |
| 13 Oct, 2025 | Gregory A Md Demopulos | Common Stock | A | 300,000 | $0.00 | 300,000 | I | G |
| 13 Oct, 2025 | Gregory A Md Demopulos | Common Stock | A | 300,000 | $0.00 | 300,000 | I | G |
| 30 Jun, 2025 | David J. Borges | Stock Option (right to buy) | A | 95,000 | $0.00 | 95,000 | D | A |
| 27 Jun, 2025 | Thomas J. Cable | Stock Option (Right to Buy) | A | 15,000 | $0.00 | 15,000 | D | A |
| 27 Jun, 2025 | Peter A Md Demopulos | Stock Option (Right to Buy) | A | 15,000 | $0.00 | 15,000 | D | A |
| 30 Jun, 2025 | Gregory A Md Demopulos | Stock Option (right to buy) | A | 865,000 | $0.00 | 865,000 | D | A |
| 27 Jun, 2025 | Thomas F. Bumol | Stock Option (Right to Buy) | A | 15,000 | $0.00 | 15,000 | D | A |
| 27 Jun, 2025 | Leroy E. Md Phd Hood | Stock Option (Right to Buy) | A | 15,000 | $0.00 | 15,000 | D | A |
| 27 Jun, 2025 | Diana T. Perkinson | Stock Option (Right to Buy) | A | 15,000 | $0.00 | 15,000 | D | A |
| 27 Jun, 2025 | Rajiv Shah | Stock Option (Right to Buy) | A | 15,000 | $0.00 | 15,000 | D | A |
| 30 Jun, 2025 | Peter B Cancelmo | Stock Option (right to buy) | A | 100,000 | $0.00 | 100,000 | D | A |
| 27 Jun, 2025 | Arnold C Hanish | Stock Option (Right to Buy) | A | 15,000 | $0.00 | 15,000 | D | A |