OMER · Insider Trading
Omeros Corporation
Every open-market purchase and sale reported by OMER officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-24 | David J. Borges | VP, Finance & CAO | MIXED | — | −$228.85K |
| 2026-09-01 | Peter B Cancelmo | VP, General Counsel | MIXED | — | −$782.67K |
| 2026-08-28 | Arnold C Hanish | Director | MIXED | — | −$53.57K |
| 2026-08-25 | David J. Borges | VP, Finance & CAO | MIXED | — | −$168.89K |
| 2026-08-21 | Thomas J. Cable | Director | MIXED | — | −$232.30K |
| 2026-08-18 | Joseph L Schocken | Director | A | +30,000 deriv. | — |
| 2026-08-17 | David J. Borges | VP, Finance & CAO | MIXED | — | −$65.10K |
| 2026-07-24 | David J. Borges | VP, Finance & CAO | A | +105,000 deriv. | — |
| 2026-07-24 | Gregory A MD Demopulos | Chairman, CEO & President | A | +1,000,000 deriv. | — |
| 2026-07-24 | Peter B Cancelmo | VP, General Counsel | A | +105,000 deriv. | — |
| 2026-06-22 | Arnold C Hanish | Director | A | +15,000 deriv. | — |
| 2026-06-22 | Peter A MD Demopulos | Director | A | +15,000 deriv. | — |
| 2026-06-22 | Leroy E. MD PhD Hood | Director | A | +15,000 deriv. | — |
| 2026-06-22 | Rajiv Shah | Director | A | +15,000 deriv. | — |
| 2026-06-22 | Thomas J. Cable | Director | A | +15,000 deriv. | — |
| 2026-06-22 | Diana T. Perkinson | Director | A | +15,000 deriv. | — |
| 2026-06-22 | Thomas F. Bumol | Director | A | +15,000 deriv. | — |
| 2026-05-27 | Thomas J. Cable | Director | MIXED | — | −$5.74K |
| 2026-02-20 | Gregory A MD Demopulos | Chairman, CEO & President | MIXED | +42,322 | −$159.10K |
| 2026-01-14 | David J. Borges | VP, Finance & CAO | MIXED | −30,000 | −$659.12K |
| 2025-10-15 | Gregory A MD Demopulos | Chairman, CEO & President | G | — | — |
| 2025-07-01 | David J. Borges | VP, Finance & CAO | A | +95,000 deriv. | — |
| 2025-07-01 | Diana T. Perkinson | Director | A | +15,000 deriv. | — |
| 2025-07-01 | Gregory A MD Demopulos | Chairman, CEO & President | A | +865,000 deriv. | — |
| 2025-07-01 | Arnold C Hanish | Director | A | +15,000 deriv. | — |
| 2025-07-01 | Peter A MD Demopulos | Director | A | +15,000 deriv. | — |
| 2025-07-01 | Thomas F. Bumol | Director | A | +15,000 deriv. | — |
| 2025-07-01 | Peter B Cancelmo | VP, General Counsel | A | +100,000 deriv. | — |
| 2025-07-01 | Thomas J. Cable | Director | A | +15,000 deriv. | — |
| 2025-07-01 | Leroy E. MD PhD Hood | Director | A | +15,000 deriv. | — |
| 2025-07-01 | Rajiv Shah | Director | A | +15,000 deriv. | — |
| 2024-06-07 | Peter A MD Demopulos | Director | A | +15,000 deriv. | — |
| 2024-06-07 | Thomas J. Cable | Director | A | +15,000 deriv. | — |
| 2024-06-07 | Rajiv Shah | Director | A | +15,000 deriv. | — |
| 2024-06-07 | Diana T. Perkinson | Director | A | +15,000 deriv. | — |
| 2024-06-07 | Leroy E. MD PhD Hood | Director | A | +15,000 deriv. | — |
| 2024-06-07 | Thomas F. Bumol | Director | A | +15,000 deriv. | — |
| 2024-06-07 | Arnold C Hanish | Director | A | +15,000 deriv. | — |
| 2024-04-29 | Peter B Cancelmo | VP, General Counsel | A | +100,000 deriv. | — |
| 2024-04-29 | Gregory A MD Demopulos | Chairman, CEO & President | A | +725,000 deriv. | — |
| 2024-04-29 | Michael A Jacobsen | VP, Finance & CAO | A | +100,000 deriv. | — |
| 2023-11-21 | Gregory A MD Demopulos | Chairman, CEO & President | Buy | +15,000 | +$25.20K |
| 2023-11-17 | Peter A MD Demopulos | Director | Buy | +10,000 | +$15.30K |
| 2023-11-15 | Gregory A MD Demopulos | Chairman, CEO & President | A | +62,500 | +$84.38K |
| 2023-09-27 | Gregory A MD Demopulos | Chairman, CEO & President | A | +715,000 deriv. | — |
| 2023-09-27 | Peter B Cancelmo | VP, General Counsel | A | +100,000 deriv. | — |
| 2023-09-27 | Michael A Jacobsen | VP, Finance & CAO | A | +100,000 deriv. | — |
| 2023-09-14 | Thomas F. Bumol | Director | A | +10,000 | +$33.10K |
| 2023-06-27 | Thomas F. Bumol | Director | A | +15,000 deriv. | — |
| 2023-06-27 | Thomas J. Cable | Director | A | +15,000 deriv. | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Gregory A MD Demopulos | Chairman, CEO & President | 2,126,986 | $35.16M |
| Peter A MD Demopulos | Director | 372,898 | $6.16M |
| Leroy E. MD PhD Hood | Director | 74,390 | $1.23M |
| Thomas J. Cable | Director | 42,567 | $703.73K |
| Arnold C Hanish | Director | 17,400 | $287.66K |
| Thomas F. Bumol | Director | 10,000 | $165.32K |
| David J. Borges | VP, Finance & CAO | 10,000 | $165.32K |
| Peter B Cancelmo | VP, General Counsel | 200 | $3.31K |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the OMER quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.