SEC Form 4 · accession 0001437749-26-031169
OMEROS CORP · OMER
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
David J. Borges
Officer — VP, Finance & CAO
Period of report
Sep 22, 2026
Accepted (ET)
Sep 24, 2026 · 9:00 pm EDT
Rule 10b5-1 plan
yes — trade under a plan
Issuer CIK
0001285819
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common Stock | Sep 22, 2026 | M | 5,000 | $3.93 | A | 5,000 | D | |
| Common Stock | Sep 22, 2026 | M | 5,000 | $2.94 | A | 10,000 | D | |
| Common Stock | Sep 22, 2026 | S | 10,000 | $20.95 | D | 0 | D | |
| Common Stock | Sep 23, 2026 | M | 10,000 | $15.58 | A | 10,000 | D | |
| Common Stock | Sep 23, 2026 | S | 10,000 | $20.95 | D | 0 | D |
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Stock Option (Right to Buy)F2 | $3.93 | Sep 22, 2026 | M | 5,000 | D | — | Sep 20, 2032 | Common Stock | 5,000 | 4,094 | D |
| Stock Option (Right to Buy)F3 | $2.94 | Sep 22, 2026 | M | 5,000 | D | — | Sep 21, 2033 | Common Stock | 5,000 | 15,000 | D |
| Stock Option (Right to Buy)F4 | $15.58 | Sep 23, 2026 | M | 10,000 | D | — | Jun 7, 2030 | Common Stock | 10,000 | 5,000 | D |
Explanation of responses
- F1Open market sale pursuant to a previously established Rule 10b5-1 trading plan adopted by the reporting person on February 10, 2026. The trading schedule, including sale periods and the number of shares to be sold, was established at the time of the trading plan's adoption in accordance with Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.
- F2This option vested and became exercisable over 48 equal monthly installments, with a vesting commencement date of April 1, 2022. Installments vested and became exercisable on each monthly anniversary thereafter.
- F3This option vests and becomes exercisable over 48 equal monthly installments, with a vesting commencement date of April 1, 2023. Installments vest and become exercisable on each monthly anniversary thereafter.
- F4This option vested and became exercisable with respect to 25% of the total number of shares subject to the option on the 12-month anniversary of the vesting commencement date of June 8, 2020, and the remainder of the option vested and became exercisable over 48 equal installments on each monthly anniversary thereafter.