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The reporting person hereby undertakes to provide full information regarding the number of shares and prices at which the transactions referenced in this footnote were effected upon request to the SEC staff, the issuer, or a security holder of the issuer."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001437749-26-001280","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/2005787/000143774926001280/rdgdoc.xml","form_type":"4"}},{"id":939327,"issuer":{"id":4756,"kind":"organization","name":"OMEROS CORP","symbol":"OMER"},"owners":[{"id":19970,"kind":"person","name":"Borges David J.","position":1,"cik":"0002005787","reported_name":"Borges David J.","relationship":{"officer":true,"officer_title":"VP, Finance & CAO"}}],"security":"Common stock","published_at":"2026-01-14T22:25:24.000Z","date":"2026-01-13","kind":"exercise","planned":false,"acquired":true,"shares":30000,"price":3.06,"value":91800.0,"ownership":{"direct":true},"balance_after":30000,"source":{"system":"sec-edgar","filing":"0001437749-26-001280","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/2005787/000143774926001280/rdgdoc.xml","form_type":"4"}},{"id":939326,"issuer":{"id":4756,"kind":"organization","name":"OMEROS CORP","symbol":"OMER"},"owners":[{"id":19970,"kind":"person","name":"Borges David J.","position":1,"cik":"0002005787","reported_name":"Borges David J.","relationship":{"officer":true,"officer_title":"VP, Finance & CAO"}}],"security":"Common stock","published_at":"2026-01-14T22:25:24.000Z","date":"2026-01-12","kind":"sale","planned":false,"acquired":false,"shares":30000,"price":12.72,"value":381600.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"This transaction was executed in multiple trades at prices ranging from $12.56 to $13.06. The price reported above reflects the weighted average sales price. The reporting person hereby undertakes to provide full information regarding the number of shares and prices at which the transactions referenced in this footnote were effected upon request to the SEC staff, the issuer, or a security holder of the issuer."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001437749-26-001280","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2005787/000143774926001280/rdgdoc.xml","form_type":"4"}},{"id":1098089,"issuer":{"id":4756,"kind":"organization","name":"OMEROS CORP","symbol":"OMER"},"owners":[{"id":19970,"kind":"person","name":"Borges David J.","position":1,"cik":"0002005787","reported_name":"Borges David J.","relationship":{"officer":true,"officer_title":"VP, Finance & CAO"}}],"security":"Stock Option (right to buy)","published_at":"2025-07-01T21:27:22.000Z","date":"2025-06-30","kind":"grant","planned":false,"acquired":true,"shares":95000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"This option shall vest and become exercisable over 48 equal monthly installments, with a vesting commencement date of April 1, 2025. Installments vest and become exercisable on each monthly anniversary thereafter."}],"balance_after":95000,"derivative":{"exercise_price":3.2,"expiration_date":"2035-06-30","underlying":"Common Stock","underlying_shares":95000},"source":{"system":"sec-edgar","filing":"0001437749-25-021803","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2005787/000143774925021803/rdgdoc.xml","form_type":"4"}}]}