The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
| Date | Insider | Role | Action | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 31, 2026 | Cancelmo Peter B | VP, General Counsel | Option exercise(M) | 25K | — | $0 |
| Aug 31, 2026 | Cancelmo Peter B | VP, General Counsel | Sell(S) | 25K | $18.54 | $464K |
| Aug 31, 2026 | Cancelmo Peter B | VP, General Counsel | Option exercise(M) | 25K | $2.94 | $74K |
| Aug 28, 2026 | Cancelmo Peter B | VP, General Counsel | Option exercise(M) | 25K | — | $0 |
| Aug 28, 2026 | Cancelmo Peter B | VP, General Counsel | Sell(S) | 25K | $18.65 | $466K |
| Aug 28, 2026 | Cancelmo Peter B | VP, General Counsel | Option exercise(M) | 25K | $2.94 | $74K |
| Aug 27, 2026 | Hanish Arnold C | Director | Option exercise(M) | 8K | — | $0 |
| Aug 27, 2026 | Hanish Arnold C | Director | Option exercise(M) | 3K | — | $0 |
| Aug 27, 2026 | Hanish Arnold C | Director | Sell(S) | 5K | $19.02 | $95K |
| Aug 27, 2026 | Hanish Arnold C | Director | Sell(S) | 5K | $18.88 | $94K |
| Aug 27, 2026 | Hanish Arnold C | Director | Option exercise(M) | 8K | $14.66 | $110K |
| Aug 27, 2026 | Hanish Arnold C | Director | Option exercise(M) | 3K | $15.81 | $40K |
| Aug 26, 2026 | Hanish Arnold C | Director | Option exercise(M) | 5K | — | $0 |
| Aug 26, 2026 | Hanish Arnold C | Director | Sell(S) | 5K | $18.53 | $93K |
| Aug 26, 2026 | Hanish Arnold C | Director | Option exercise(M) | 5K | $15.81 | $79K |
| Aug 24, 2026 | Borges David J. | VP, Finance & CAO | Option exercise(M) | 906 | — | $0 |
| Aug 24, 2026 | Borges David J. | VP, Finance & CAO | Sell(S) | 906 | $19.10 | $17K |
| Aug 24, 2026 | Borges David J. | VP, Finance & CAO | Option exercise(M) | 906 | $2.94 | $3K |
| Aug 21, 2026 | Borges David J. | VP, Finance & CAO | Option exercise(M) | 4K | — | $0 |
| Aug 21, 2026 | Borges David J. | VP, Finance & CAO | Option exercise(M) | 6K | — | $0 |
| Aug 21, 2026 | Borges David J. | VP, Finance & CAO | Sell(S) | 10K | $18.95 | $190K |
| Aug 21, 2026 | Borges David J. | VP, Finance & CAO | Option exercise(M) | 4K | $2.94 | $12K |
| Aug 21, 2026 | Borges David J. | VP, Finance & CAO | Option exercise(M) | 6K | $3.93 | $23K |
| Aug 20, 2026 | Cable Thomas J. | Director | Option exercise(M) | 8K | — | $0 |
| Aug 20, 2026 | Cable Thomas J. | Director | Option exercise(M) | 8K | — | $0 |
| Aug 20, 2026 | Cable Thomas J. | Director | Sell(S) | 15K | $18.45 | $277K |
| Aug 20, 2026 | Cable Thomas J. | Director | Option exercise(M) | 8K | $3.93 | $29K |
| Aug 20, 2026 | Cable Thomas J. | Director | Option exercise(M) | 8K | $2.00 | $15K |
| Aug 13, 2026 | Borges David J. | VP, Finance & CAO | Option exercise(M) | 5K | — | $0 |
| Aug 13, 2026 | Borges David J. | VP, Finance & CAO | Sell(S) | 5K | $16.95 | $85K |
| Aug 13, 2026 | Borges David J. | VP, Finance & CAO | Option exercise(M) | 5K | $3.93 | $20K |
| Aug 12, 2026 | Schocken Joseph L | Director | Grant(A) | 30K | — | $0 |
| Jul 22, 2026 | Demopulos Gregory A MD | Chairman, CEO & President, Director | Grant(A) | 1.0M | — | $0 |
| Jul 22, 2026 | Cancelmo Peter B | VP, General Counsel | Grant(A) | 105K | — | $0 |
| Jul 22, 2026 | Borges David J. | VP, Finance & CAO | Grant(A) | 105K | — | $0 |
| Jun 18, 2026 | Shah Rajiv | Director | Grant(A) | 15K | — | $0 |
| Jun 18, 2026 | Perkinson Diana T. | Director | Grant(A) | 15K | — | $0 |
| Jun 18, 2026 | Hood Leroy E. MD PhD | Director | Grant(A) | 15K | — | $0 |
| Jun 18, 2026 | Hanish Arnold C | Director | Grant(A) | 15K | — | $0 |
| Jun 18, 2026 | Demopulos Peter A MD | Director | Grant(A) | 15K | — | $0 |
| Jun 18, 2026 | Cable Thomas J. | Director | Grant(A) | 15K | — | $0 |
| Jun 18, 2026 | Bumol Thomas F. | Director | Grant(A) | 15K | — | $0 |
| May 22, 2026 | Cable Thomas J. | Director | Option exercise(M) | 8K | $10.84 | $81K |
| May 22, 2026 | Cable Thomas J. | Director | Sell(S) | 8K | $11.61 | $87K |
| May 22, 2026 | Cable Thomas J. | Director | Option exercise(M) | 8K | — | $0 |
| Feb 18, 2026 | Demopulos Gregory A MD | Chairman, CEO & President, Director | Tax withholding(F) | 358K | $11.93 | $4.3M |
| Feb 18, 2026 | Demopulos Gregory A MD | Chairman, CEO & President, Director | Option exercise(M) | 400K | $10.27 | $4.1M |
| Feb 18, 2026 | Demopulos Gregory A MD | Chairman, CEO & President, Director | Option exercise(M) | 400K | — | $0 |
| Jan 13, 2026 | Borges David J. | VP, Finance & CAO | Option exercise(M) | 30K | $3.06 | $92K |
| Jan 13, 2026 | Borges David J. | VP, Finance & CAO | Sell(S) | 30K | $12.31 | $369K |
| Jan 13, 2026 | Borges David J. | VP, Finance & CAO | Option exercise(M) | 30K | — | $0 |
| Jan 12, 2026 | Borges David J. | VP, Finance & CAO | Sell(S) | 30K | $12.72 | $382K |
| Oct 13, 2025 | Demopulos Gregory A MD | Chairman, CEO & President, Director | Gift(G) | 300K | — | $0 |
| Oct 13, 2025 | Demopulos Gregory A MD | Chairman, CEO & President, Director | Gift(G) | 300K | — | $0 |
| Oct 13, 2025 | Demopulos Gregory A MD | Chairman, CEO & President, Director | Gift(G) | 600K | — | $0 |
| Jun 30, 2025 | Borges David J. | VP, Finance & CAO | Grant(A) | 95K | — | $0 |
| Jun 30, 2025 | Cancelmo Peter B | VP, General Counsel | Grant(A) | 100K | — | $0 |
| Jun 30, 2025 | Demopulos Gregory A MD | Chairman, CEO & President, Director | Grant(A) | 865K | — | $0 |
| Jun 27, 2025 | Bumol Thomas F. | Director | Grant(A) | 15K | — | $0 |
| Jun 27, 2025 | Cable Thomas J. | Director | Grant(A) | 15K | — | $0 |
| Jun 27, 2025 | Demopulos Peter A MD | Director | Grant(A) | 15K | — | $0 |
| Jun 27, 2025 | Hanish Arnold C | Director | Grant(A) | 15K | — | $0 |
| Jun 27, 2025 | Hood Leroy E. MD PhD | Director | Grant(A) | 15K | — | $0 |
| Jun 27, 2025 | Perkinson Diana T. | Director | Grant(A) | 15K | — | $0 |
| Jun 27, 2025 | Shah Rajiv | Director | Grant(A) | 15K | — | $0 |
| Jun 6, 2024 | Bumol Thomas F. | Director | Grant(A) | 15K | — | $0 |
| Jun 6, 2024 | Cable Thomas J. | Director | Grant(A) | 15K | — | $0 |
| Jun 6, 2024 | Demopulos Peter A MD | Director | Grant(A) | 15K | — | $0 |
| Jun 6, 2024 | Hanish Arnold C | Director | Grant(A) | 15K | — | $0 |
| Jun 6, 2024 | Hood Leroy E. MD PhD | Director | Grant(A) | 15K | — | $0 |
| Jun 6, 2024 | Perkinson Diana T. | Director | Grant(A) | 15K | — | $0 |
| Jun 6, 2024 | Shah Rajiv | Director | Grant(A) | 15K | — | $0 |
| Apr 25, 2024 | Cancelmo Peter B | VP, General Counsel | Grant(A) | 100K | — | $0 |
| Apr 25, 2024 | Jacobsen Michael A | VP, Finance & CAO | Grant(A) | 100K | — | $0 |
| Apr 25, 2024 | Demopulos Gregory A MD | Chairman, CEO & President, Director | Grant(A) | 725K | — | $0 |
| Nov 17, 2023 | Demopulos Gregory A MD | Chairman, CEO & President | Buy(P) | 15K | $1.68 | $25K |
| Nov 15, 2023 | Demopulos Peter A MD | Director | Buy(P) | 10K | $1.53 | $15K |
| Nov 14, 2023 | Demopulos Gregory A MD | Chairman, CEO & President | Grant(A) | 25K | $1.44 | $36K |
| Nov 13, 2023 | Demopulos Gregory A MD | Chairman, CEO & President | Grant(A) | 38K | $1.29 | $48K |
| Sep 22, 2023 | Cancelmo Peter B | VP, General Counsel | Grant(A) | 100K | — | $0 |
| Sep 22, 2023 | Jacobsen Michael A | VP, Finance & CAO | Grant(A) | 100K | — | $0 |
| Sep 22, 2023 | Demopulos Gregory A MD | Chairman, CEO & President | Grant(A) | 715K | — | $0 |
| Sep 12, 2023 | Bumol Thomas F. | Director | Grant(A) | 10K | $3.31 | $33K |
| Jun 23, 2023 | Cable Thomas J. | Director | Grant(A) | 15K | — | $0 |
| Jun 23, 2023 | Bumol Thomas F. | Director | Grant(A) | 15K | — | $0 |
| Jun 23, 2023 | Shah Rajiv | Director | Grant(A) | 15K | — | $0 |
| Jun 23, 2023 | Demopulos Peter A MD | Director | Grant(A) | 15K | — | $0 |
| Jun 23, 2023 | Hood Leroy E. MD PhD | Director | Grant(A) | 15K | — | $0 |
| Jun 23, 2023 | Hanish Arnold C | Director | Grant(A) | 15K | — | $0 |
| May 22, 2023 | Cable Thomas J. | Director | Sell(S) | 5K | $6.53 | $33K |
| May 22, 2023 | Cable Thomas J. | Director | Option exercise(M) | 5K | $5.30 | $27K |
| May 22, 2023 | Cable Thomas J. | Director | Option exercise(M) | 5K | — | $0 |
| May 22, 2023 | Hanish Arnold C | Director | Option exercise(M) | 5K | $5.30 | $27K |
| May 22, 2023 | Hanish Arnold C | Director | Sell(S) | 5K | $6.46 | $32K |
| May 22, 2023 | Hanish Arnold C | Director | Option exercise(M) | 5K | — | $0 |
| May 12, 2023 | Perkinson Diana T. | Director | Grant(A) | 30K | — | $0 |
| Sep 21, 2022 | Cancelmo Peter B | VP, GENERAL COUNSEL | Grant(A) | 80K | — | $0 |
| Sep 21, 2022 | Jacobsen Michael A | VP FINANCE AND CAO | Grant(A) | 85K | — | $0 |
| Sep 21, 2022 | Demopulos Gregory A MD | CHAIRMAN, CEO & PRESIDENT, Director | Grant(A) | 650K | — | $0 |
| Sep 21, 2022 | Hanish Arnold C | Director | Grant(A) | 8K | — | $0 |
Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.
Issuer: Omeros Corp, SEC CIK 0001285819. The symbol on a Form 4 is typed by the filer, so this page follows the issuer with the newest filing under OMER and shows every filing by that issuer.
Coverage: Form 4 filings indexed 2006-01-02 → 2026-09-15. Earlier history is backfilling; this window widens as it deepens.
Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).
Connected pages for OMER