Form 4 for OMER OMEROS CORP

Accepted 2025-10-15 00:00:00 ET · period of report 2025-10-13 · accession 0001437749-25-031087 · 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
MI	2025-10-15	2025-10-13	OMER	Demopulos Gregory A MD	COB, CEO, Pres, Dir	G - Gift	$0.00	+600.0K	300.0K	New	$0
	2025-10-15	2025-10-13	OMER	Demopulos Gregory A MD	COB, CEO, Pres, Dir	G - Gift	$0.00	-600.0K	1.43M	-30%	$0

Purchase Sale Sale after option exercise All abbreviations

#	Table	Security	Date	Code	A/D	Shares	Price	Owned after	Own	Exercise / expiry	Underlying	Footnotes
1	Common	Common Stock	2025-10-13	G	A	300,000	$0.00	300,000	I By trust	—	—	(F2) The reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, if any, and nothing in this report shall be deemed an admission that the reporting person is the beneficial owner of such securities under Section 16 of the Securities Exchange Act of 1934 or for any other purpose. (F4) Shares held in the [Demopulos Child #2] Gift Trust, an irrevocable trust established for the benefit of a minor child of the reporting person.
2	Common	Common Stock	2025-10-13	G	A	300,000	$0.00	300,000	I	—	—	(F2) The reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, if any, and nothing in this report shall be deemed an admission that the reporting person is the beneficial owner of such securities under Section 16 of the Securities Exchange Act of 1934 or for any other purpose.
3	Common	Common Stock	2025-10-13	G	D	600,000	$0.00	1,426,986	D By trust	—	—	(F3) Shares held in the [Demopulos Child #1] Gift Trust, an irrevocable trust established for the benefit of a minor child of the reporting person.