Form 4 for OMER OMEROS CORP
Accepted 2026-09-24 21:00:50 ET · period of report 2026-09-22 · accession 0001437749-26-031169 · 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DMT | 2026-09-24 21:00 | 2026-09-22+ | OMER | Borges David J. | VP, CAO, Fin | M - OptEx | $9.51 | +20.0K | 10.0K | New | +$190.2K |
| DMT | 2026-09-24 21:00 | 2026-09-22+ | OMER | Borges David J. | VP, CAO, Fin | S - Sale+OE | $20.95 | -20.0K | 0 | -100% | -$419.0K |
| DMT | 2026-09-24 21:00 | 2026-09-22+ | OMER | Borges David J. | VP, CAO, Fin | M - OptEx | $0.00 | -20.0K | 5,000 | -80% | $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 | 2026-09-22 | M | A | 5,000 | $3.93 | 5,000 | D | — | — | |
| 2 | Common | Common Stock | 2026-09-22 | M | A | 5,000 | $2.94 | 10,000 | D | — | — | |
| 3 | Common | Common Stock | 2026-09-22 | S | D | 10,000 | $20.95 | 0 | D | — | — | (F1) Open 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. |
| 4 | Common | Common Stock | 2026-09-23 | M | A | 10,000 | $15.58 | 10,000 | D | — | — | |
| 5 | Common | Common Stock | 2026-09-23 | S | D | 10,000 | $20.95 | 0 | D | — | — | (F1) Open 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. |
| 6 | Derivative | Stock Option (Right to Buy) | 2026-09-22 | M | D | 5,000 | $0.00 | 4,094 | D | $3.93 · — to 2032-09-20 | 5,000 Common Stock | (F2) This 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. |
| 7 | Derivative | Stock Option (Right to Buy) | 2026-09-22 | M | D | 5,000 | $0.00 | 15,000 | D | $2.94 · — to 2033-09-21 | 5,000 Common Stock | (F3) This 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. |
| 8 | Derivative | Stock Option (Right to Buy) | 2026-09-23 | M | D | 10,000 | $0.00 | 5,000 | D | $15.58 · — to 2030-06-07 | 10,000 Common Stock | (F4) This 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. |