SEC Form 4 · Updated Daily

OMER

OMEROS CORPORATION Ownership

Insider 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.

FinancialsOwnership

Current Reporting Owners

OwnerRoleShares OwnedAs OfLast Activity
Demopulos Gregory A MDDirector · Officer1,469,3082026-02-18F
Cable Thomas J.Director35,0672026-08-20S
Cancelmo Peter BOfficer2002026-08-31S
HANISH ARNOLD CDirector02026-08-27S
Borges David J.Officer02026-08-24S

Recent Filings

DateOwnerActivitySharesPriceOwned After
2026-08-31Cancelmo Peter BOption exercise (derivative)25,000$0.0050,000
2026-08-31Cancelmo Peter BOpen-market sale25,000$18.54200
2026-08-31Cancelmo Peter BOption exercise25,000$2.9425,200
2026-08-28Cancelmo Peter BOption exercise (derivative)25,000$0.0075,000
2026-08-28Cancelmo Peter BOpen-market sale25,000$18.65200
2026-08-28Cancelmo Peter BOption exercise25,000$2.9425,200
2026-08-27HANISH ARNOLD COption exercise (derivative)2,500$0.000
2026-08-27HANISH ARNOLD COpen-market sale5,000$19.020
2026-08-27HANISH ARNOLD COpen-market sale5,000$18.885,000
2026-08-27HANISH ARNOLD COption exercise7,500$14.6610,000
2026-08-27HANISH ARNOLD COption exercise2,500$15.812,500
2026-08-26HANISH ARNOLD COption exercise (derivative)5,000$0.002,500
2026-08-26HANISH ARNOLD COpen-market sale5,000$18.530
2026-08-26HANISH ARNOLD COption exercise5,000$15.815,000
2026-08-24Borges David J.Option exercise (derivative)906$0.0020,000
2026-08-24Borges David J.Open-market sale906$19.100
2026-08-24Borges David J.Option exercise906$2.94906
2026-08-21Borges David J.Option exercise (derivative)4,094$0.0020,906
2026-08-21Borges David J.Option exercise (derivative)5,906$0.009,094
2026-08-21Borges David J.Open-market sale10,000$18.950
2026-08-21Borges David J.Option exercise4,094$2.9410,000
2026-08-21Borges David J.Option exercise5,906$3.935,906
2026-08-20Cable Thomas J.Option exercise (derivative)7,500$0.000
2026-08-20Cable Thomas J.Open-market sale15,000$18.4535,067
2026-08-20Cable Thomas J.Option exercise7,500$3.9350,067
2026-08-20Cable Thomas J.Option exercise7,500$2.0042,567
2026-08-13Borges David J.Option exercise (derivative)5,000$0.0015,000
2026-08-13Borges David J.Open-market sale5,000$16.950
2026-08-13Borges David J.Option exercise5,000$3.935,000
2026-08-12Schocken Joseph LGrant / award (derivative)30,000$0.0030,000
2026-07-22Borges David J.Grant / award (derivative)105,000$0.00105,000
2026-07-22Cancelmo Peter BGrant / award (derivative)105,000$0.00105,000
2026-07-22Demopulos Gregory A MDGrant / award (derivative)1,000,000$0.001,000,000
2026-06-18Bumol Thomas F.Grant / award (derivative)15,000$0.0015,000
2026-06-18Cable Thomas J.Grant / award (derivative)15,000$0.0015,000
2026-06-18Demopulos Peter A MDGrant / award (derivative)15,000$0.0015,000
2026-06-18HANISH ARNOLD CGrant / award (derivative)15,000$0.0015,000
2026-06-18Hood Leroy E. MD PhDGrant / award (derivative)15,000$0.0015,000
2026-06-18Perkinson Diana T.Grant / award (derivative)15,000$0.0015,000
2026-06-18Shah RajivGrant / award (derivative)15,000$0.0015,000

Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.