SEC Form 4 · Updated Daily
OMER
— OMEROS CORPORATION OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| Demopulos Gregory A MD | Director · Officer | 1,826,986 | 2026-02-18 | M |
| Tripet Jean-Philippe | Director | 493,102 | 2009-10-13 | C |
| Schocken Joseph L | Director | 380,472 | 2026-08-12 | — |
| Kelbon Marcia S. | Officer | 210,645 | 2019-06-07 | M |
| Demopulos Peter A MD | Director | 208,516 | 2023-11-15 | P |
| Hood Leroy E. MD PhD | Director | 74,390 | 2021-02-12 | M |
| Cable Thomas J. | Director | 50,067 | 2026-08-20 | M |
| Aspiri Ray | Director | 40,306 | 2013-10-24 | M |
| Cancelmo Peter B | Officer | 25,200 | 2026-08-31 | M |
| JACOBSEN MICHAEL A | Officer | 24,000 | 2021-02-19 | M |
| Borges David J. | Officer | 10,000 | 2026-09-22 | M |
| HANISH ARNOLD C | Director | 10,000 | 2026-08-27 | M |
| Bumol Thomas F. | Director | 10,000 | 2023-09-12 | A |
| Zumwalt Kurt | Director | 1,000 | 2020-02-10 | — |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-09-23 | Borges David J. | Option exercise (derivative) | 10,000 | $0.00 | 5,000 |
| 2026-09-23 | Borges David J. | Open-market sale | 10,000 | $20.95 | 0 |
| 2026-09-23 | Borges David J. | Option exercise | 10,000 | $15.58 | 10,000 |
| 2026-09-22 | Borges David J. | Option exercise (derivative) | 5,000 | $0.00 | 15,000 |
| 2026-09-22 | Borges David J. | Option exercise (derivative) | 5,000 | $0.00 | 4,094 |
| 2026-09-22 | Borges David J. | Open-market sale | 10,000 | $20.95 | 0 |
| 2026-09-22 | Borges David J. | Option exercise | 5,000 | $2.94 | 10,000 |
| 2026-09-22 | Borges David J. | Option exercise | 5,000 | $3.93 | 5,000 |
| 2026-08-31 | Cancelmo Peter B | Option exercise (derivative) | 25,000 | $0.00 | 50,000 |
| 2026-08-31 | Cancelmo Peter B | Open-market sale | 25,000 | $18.54 | 200 |
| 2026-08-31 | Cancelmo Peter B | Option exercise | 25,000 | $2.94 | 25,200 |
| 2026-08-28 | Cancelmo Peter B | Option exercise (derivative) | 25,000 | $0.00 | 75,000 |
| 2026-08-28 | Cancelmo Peter B | Open-market sale | 25,000 | $18.65 | 200 |
| 2026-08-28 | Cancelmo Peter B | Option exercise | 25,000 | $2.94 | 25,200 |
| 2026-08-27 | HANISH ARNOLD C | Option exercise (derivative) | 2,500 | $0.00 | 0 |
| 2026-08-27 | HANISH ARNOLD C | Open-market sale | 5,000 | $19.02 | 0 |
| 2026-08-27 | HANISH ARNOLD C | Open-market sale | 5,000 | $18.88 | 5,000 |
| 2026-08-27 | HANISH ARNOLD C | Option exercise | 7,500 | $14.66 | 10,000 |
| 2026-08-27 | HANISH ARNOLD C | Option exercise | 2,500 | $15.81 | 2,500 |
| 2026-08-26 | HANISH ARNOLD C | Option exercise (derivative) | 5,000 | $0.00 | 2,500 |
| 2026-08-26 | HANISH ARNOLD C | Open-market sale | 5,000 | $18.53 | 0 |
| 2026-08-26 | HANISH ARNOLD C | Option exercise | 5,000 | $15.81 | 5,000 |
| 2026-08-24 | Borges David J. | Option exercise (derivative) | 906 | $0.00 | 20,000 |
| 2026-08-24 | Borges David J. | Open-market sale | 906 | $19.10 | 0 |
| 2026-08-24 | Borges David J. | Option exercise | 906 | $2.94 | 906 |
| 2026-08-21 | Borges David J. | Option exercise (derivative) | 4,094 | $0.00 | 20,906 |
| 2026-08-21 | Borges David J. | Option exercise (derivative) | 5,906 | $0.00 | 9,094 |
| 2026-08-21 | Borges David J. | Open-market sale | 10,000 | $18.95 | 0 |
| 2026-08-21 | Borges David J. | Option exercise | 4,094 | $2.94 | 10,000 |
| 2026-08-21 | Borges David J. | Option exercise | 5,906 | $3.93 | 5,906 |
| 2026-08-20 | Cable Thomas J. | Option exercise (derivative) | 7,500 | $0.00 | 0 |
| 2026-08-20 | Cable Thomas J. | Open-market sale | 15,000 | $18.45 | 35,067 |
| 2026-08-20 | Cable Thomas J. | Option exercise | 7,500 | $3.93 | 50,067 |
| 2026-08-20 | Cable Thomas J. | Option exercise | 7,500 | $2.00 | 42,567 |
| 2026-08-13 | Borges David J. | Option exercise (derivative) | 5,000 | $0.00 | 15,000 |
| 2026-08-13 | Borges David J. | Open-market sale | 5,000 | $16.95 | 0 |
| 2026-08-13 | Borges David J. | Option exercise | 5,000 | $3.93 | 5,000 |
| 2026-08-12 | Schocken Joseph L | — | — | — | 2,510 |
| 2026-08-12 | Schocken Joseph L | — | — | — | 145,100 |
| 2026-08-12 | Schocken Joseph L | — | — | — | 380,472 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.