OMEROS CORP — Director's Dealing 2026

Jan 14, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: OMEROS CORP (OMER)
CIK: 0001285819
Period of Report: 2026-01-12

Reporting Person: Borges David J. (VP, Finance & CAO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-01-12	Common stock	S	30000	$12.72	Disposed	0	Direct
2026-01-13	Common stock	M	30000	$3.06	Acquired	30000	Direct
2026-01-13	Common stock	S	30000	$12.3105	Disposed	0	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2026-01-13	Stock Option (right to buy)	$3.06	M	30000	Disposed	2034-04-25	Common Stock (30000)	Direct

Footnotes

F1: 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.

F2: This transaction was executed in multiple trades at prices ranging from $12.13 to $12.62. 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.

F3: This option vests and becomes exercisable over 48 equal monthly installments, with a vesting commencement date of April 1, 2024. Installments vest and become exercisable on each monthly anniversary thereafter.