OMEROS CORP (OMER) — insider trading
Health Care · NASDAQ
OMEROS CORP (OMER) has 56 reported SEC Form 4 insider transactions in our data, including 12 open-market sales among the most recent 56 (latest 2026-09-23).
Recent Form 4 transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-09-23 | Borges David J. | Officer (VP, Finance & CAO) | Option exercise / conversion (derivative) | 10,000 | — | $0 | Form 4 |
| 2026-09-23 | Borges David J. | Officer (VP, Finance & CAO) | Open-market sale | 10,000 | $20.95 | $209.5K | Form 4 |
| 2026-09-23 | Borges David J. | Officer (VP, Finance & CAO) | Option exercise / conversion | 10,000 | $15.58 | $155.8K | Form 4 |
| 2026-09-22 | Borges David J. | Officer (VP, Finance & CAO) | Option exercise / conversion (derivative) | 5,000 | — | $0 | Form 4 |
| 2026-09-22 | Borges David J. | Officer (VP, Finance & CAO) | Option exercise / conversion (derivative) | 5,000 | — | $0 | Form 4 |
| 2026-09-22 | Borges David J. | Officer (VP, Finance & CAO) | Open-market sale | 10,000 | $20.95 | $209.5K | Form 4 |
| 2026-09-22 | Borges David J. | Officer (VP, Finance & CAO) | Option exercise / conversion | 5,000 | $2.94 | $14.7K | Form 4 |
| 2026-09-22 | Borges David J. | Officer (VP, Finance & CAO) | Option exercise / conversion | 5,000 | $3.93 | $19.6K | Form 4 |
| 2026-08-31 | Cancelmo Peter B | Officer (VP, General Counsel) | Option exercise / conversion (derivative) | 25,000 | — | $0 | Form 4 |
| 2026-08-31 | Cancelmo Peter B | Officer (VP, General Counsel) | Open-market sale | 25,000 | $18.54 | $463.5K | Form 4 |
| 2026-08-31 | Cancelmo Peter B | Officer (VP, General Counsel) | Option exercise / conversion | 25,000 | $2.94 | $73.5K | Form 4 |
| 2026-08-28 | Cancelmo Peter B | Officer (VP, General Counsel) | Option exercise / conversion (derivative) | 25,000 | — | $0 | Form 4 |
| 2026-08-28 | Cancelmo Peter B | Officer (VP, General Counsel) | Open-market sale | 25,000 | $18.65 | $466.1K | Form 4 |
| 2026-08-28 | Cancelmo Peter B | Officer (VP, General Counsel) | Option exercise / conversion | 25,000 | $2.94 | $73.5K | Form 4 |
| 2026-08-27 | HANISH ARNOLD C | Director | Option exercise / conversion (derivative) | 7,500 | — | $0 | Form 4 |
| 2026-08-27 | HANISH ARNOLD C | Director | Option exercise / conversion (derivative) | 2,500 | — | $0 | Form 4 |
| 2026-08-27 | HANISH ARNOLD C | Director | Open-market sale | 5,000 | $19.02 | $95.1K | Form 4 |
| 2026-08-27 | HANISH ARNOLD C | Director | Open-market sale | 5,000 | $18.88 | $94.4K | Form 4 |
| 2026-08-27 | HANISH ARNOLD C | Director | Option exercise / conversion | 7,500 | $14.66 | $110.0K | Form 4 |
| 2026-08-27 | HANISH ARNOLD C | Director | Option exercise / conversion | 2,500 | $15.81 | $39.5K | Form 4 |
| 2026-08-26 | HANISH ARNOLD C | Director | Option exercise / conversion (derivative) | 5,000 | — | $0 | Form 4 |
| 2026-08-26 | HANISH ARNOLD C | Director | Open-market sale | 5,000 | $18.53 | $92.6K | Form 4 |
| 2026-08-26 | HANISH ARNOLD C | Director | Option exercise / conversion | 5,000 | $15.81 | $79.0K | Form 4 |
| 2026-08-24 | Borges David J. | Officer (VP, Finance & CAO) | Option exercise / conversion (derivative) | 906 | — | $0 | Form 4 |
| 2026-08-24 | Borges David J. | Officer (VP, Finance & CAO) | Open-market sale | 906 | $19.10 | $17.3K | Form 4 |
| 2026-08-24 | Borges David J. | Officer (VP, Finance & CAO) | Option exercise / conversion | 906 | $2.94 | $2.7K | Form 4 |
| 2026-08-21 | Borges David J. | Officer (VP, Finance & CAO) | Option exercise / conversion (derivative) | 4,094 | — | $0 | Form 4 |
| 2026-08-21 | Borges David J. | Officer (VP, Finance & CAO) | Option exercise / conversion (derivative) | 5,906 | — | $0 | Form 4 |
| 2026-08-21 | Borges David J. | Officer (VP, Finance & CAO) | Open-market sale | 10,000 | $18.95 | $189.5K | Form 4 |
| 2026-08-21 | Borges David J. | Officer (VP, Finance & CAO) | Option exercise / conversion | 4,094 | $2.94 | $12.0K | Form 4 |
| 2026-08-21 | Borges David J. | Officer (VP, Finance & CAO) | Option exercise / conversion | 5,906 | $3.93 | $23.2K | Form 4 |
| 2026-08-20 | Cable Thomas J. | Director | Option exercise / conversion (derivative) | 7,500 | — | $0 | Form 4 |
| 2026-08-20 | Cable Thomas J. | Director | Option exercise / conversion (derivative) | 7,500 | — | $0 | Form 4 |
| 2026-08-20 | Cable Thomas J. | Director | Open-market sale | 15,000 | $18.45 | $276.8K | Form 4 |
| 2026-08-20 | Cable Thomas J. | Director | Option exercise / conversion | 7,500 | $3.93 | $29.5K | Form 4 |
| 2026-08-20 | Cable Thomas J. | Director | Option exercise / conversion | 7,500 | $2.00 | $15.0K | Form 4 |
| 2026-08-13 | Borges David J. | Officer (VP, Finance & CAO) | Option exercise / conversion (derivative) | 5,000 | — | $0 | Form 4 |
| 2026-08-13 | Borges David J. | Officer (VP, Finance & CAO) | Open-market sale | 5,000 | $16.95 | $84.8K | Form 4 |
| 2026-08-13 | Borges David J. | Officer (VP, Finance & CAO) | Option exercise / conversion | 5,000 | $3.93 | $19.6K | Form 4 |
| 2026-08-12 | Schocken Joseph L | Director | Grant / award / vesting (derivative) | 30,000 | — | $0 | Form 4 |
| 2026-07-22 | Borges David J. | Officer (VP, Finance & CAO) | Grant / award / vesting (derivative) | 105,000 | — | $0 | Form 4 |
| 2026-07-22 | Cancelmo Peter B | Officer (VP, General Counsel) | Grant / award / vesting (derivative) | 105,000 | — | $0 | Form 4 |
| 2026-07-22 | Demopulos Gregory A MD | Director, Officer (Chairman, CEO & President) | Grant / award / vesting (derivative) | 1,000,000 | — | $0 | Form 4 |
| 2026-06-18 | Bumol Thomas F. | Director | Grant / award / vesting (derivative) | 15,000 | — | $0 | Form 4 |
| 2026-06-18 | Cable Thomas J. | Director | Grant / award / vesting (derivative) | 15,000 | — | $0 | Form 4 |
| 2026-06-18 | Demopulos Peter A MD | Director | Grant / award / vesting (derivative) | 15,000 | — | $0 | Form 4 |
| 2026-06-18 | HANISH ARNOLD C | Director | Grant / award / vesting (derivative) | 15,000 | — | $0 | Form 4 |
| 2026-06-18 | Hood Leroy E. MD PhD | Director | Grant / award / vesting (derivative) | 15,000 | — | $0 | Form 4 |
| 2026-06-18 | Perkinson Diana T. | Director | Grant / award / vesting (derivative) | 15,000 | — | $0 | Form 4 |
| 2026-06-18 | Shah Rajiv | Director | Grant / award / vesting (derivative) | 15,000 | — | $0 | Form 4 |
| 2026-05-22 | Cable Thomas J. | Director | Option exercise / conversion (derivative) | 7,500 | — | $0 | Form 4 |
| 2026-05-22 | Cable Thomas J. | Director | Open-market sale | 7,500 | $11.61 | $87.0K | Form 4 |
| 2026-05-22 | Cable Thomas J. | Director | Option exercise / conversion | 7,500 | $10.84 | $81.3K | Form 4 |
| 2026-02-18 | Demopulos Gregory A MD | Director, Officer (Chairman, CEO & President) | Option exercise / conversion (derivative) | 400,000 | — | $0 | Form 4 |
| 2026-02-18 | Demopulos Gregory A MD | Director, Officer (Chairman, CEO & President) | Shares withheld for taxes / exercise cost | 357,678 | $11.93 | $4.27M | Form 4 |
| 2026-02-18 | Demopulos Gregory A MD | Director, Officer (Chairman, CEO & President) | Option exercise / conversion | 400,000 | $10.27 | $4.11M | Form 4 |
Ask the chat about OMER's insider activity →
Transaction types are the SEC Form 4 codes: open-market purchases (P) and sales (S) are the only rows that reflect open-market conviction. Awards/vesting (A), option exercises (M/X/C), shares withheld for taxes (F) and gifts (G) are compensation or mechanical, not buying or selling on the open market. Sales may be planned and non-discretionary (e.g. a Rule 10b5-1 plan); open-market buying is not a recommendation to buy. Informational only — not financial advice.
Source: SEC EDGAR Form 3/4/5. See the full company profile: OMEROS CORP (OMER).
Last updated 2026-09-23 (most recent filing date).
Informational only — NOT financial advice. Insider filings are sourced from SEC EDGAR and shown with their reported dates.