Form 4 for OMER OMEROS CORP
Accepted 2026-02-20 00:00:00 ET · period of report 2026-02-18 · accession 0001437749-26-004950 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2026-02-20 | 2026-02-18 | OMER | Demopulos Gregory A MD | COB, CEO, Pres, Dir | F - Tax | $11.93 | -357.7K | 1.47M | -20% | -$4.27M |
| D | 2026-02-20 | 2026-02-18 | OMER | Demopulos Gregory A MD | COB, CEO, Pres, Dir | M - OptEx | $10.27 | +400.0K | 1.83M | +28% | +$4.11M |
| D | 2026-02-20 | 2026-02-18 | OMER | Demopulos Gregory A MD | COB, CEO, Pres, Dir | M - OptEx | $0.00 | -400.0K | 0 | -100% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common stock | 2026-02-18 | F | D | 357,678 | $11.93 | 1,469,308 | D | — | — | (F1) Represents shares withheld by Omeros Corporation ("Omeros") in connection with net share settlement to satisfy the exercise price and tax liability associated with the reporting person's exercise of stock options. The number of shares withheld was determined based on the closing price of Omeros' common stock on February 17, 2026. The transaction did not involve any open-market sale of securities, and all 357,678 withheld shares remained in the Omeros treasury. |
| 2 | Common | Common stock | 2026-02-18 | M | A | 400,000 | $10.27 | 1,826,986 | D | — | — | |
| 3 | Derivative | Stock option (right to buy) | 2026-02-18 | M | D | 400,000 | $0.00 | 0 | D | $10.27 · — to 2026-02-19 | 400,000 Common stock | (F5) This option vested and became exercisable over 48 equal monthly installments, with a vesting commencement date of April 1, 2015. |