OMER

Omeros Corporation$8.80-1.38 (-13.56%)

Prev Close$10.18·MCap$741.8M·P/E6.77·Vol7.31M·Yield—

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Buys (12M)

$0.00

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Sells (12M)

$5.11M

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Net Activity

Net Seller

$5.11M

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Active Insiders

last 12 mo

Over the past 12 months, insider activity at Omeros Corporation (OMER) has been exclusively selling, with 0 insider purchases totaling $0.00 and 3 insider sales totaling $5.11M. The most recent insider transaction was by Cable Thomas J. (director), who sold $87.0K worth of shares on May 27, 2026. Omeros Corporation operates in the Healthcare sector, within the Biotechnology industry, with a market cap of $741.8M.

OMER Insider Trading Activity

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
May 27, 2026	Cable Thomas J.	director	Sell	7,500	$11.61	$87.0K	35,067
Feb 18, 2026	Demopulos Gregory A MD	Chairman, CEO & President	Sell	357,678	$11.93	$4.27M0.5% OS	0
Jan 14, 2026	Borges David J.	officer: VP, Finance & CAO	Sell	60,000	$12.52	$750.9K	0Exit
Nov 21, 2023	Demopulos Gregory A MD	Chairman, CEO & President	Buy	15,000	$1.68	$25.2K	123,945
Nov 17, 2023	Demopulos Peter A MD	Director	Buy	10,000	$1.53	$15.3K	208,516
May 23, 2023	Cable Thomas J.		Sell	5,000	$6.53	$32.6K	35,067
May 23, 2023	HANISH ARNOLD C		Sell	5,000	$6.46	$32.3K	0Exit
Jun 17, 2021	Demopulos Gregory A MD	CHAIRMAN, CEO & PRESIDENT	Sell	73,713	$14.96	$1.10M	2,026,986
May 21, 2021	Demopulos Gregory A MD	CHAIRMAN, CEO & PRESIDENT	Sell	73,713	$16.01	$1.18M	2,026,986
Apr 8, 2021	Demopulos Gregory A MD	CHAIRMAN, CEO & PRESIDENT	Sell	72,613	$17.84	$1.30M	2,026,986

OMER Insider Buying Activity

The following table shows recent insider purchases of Omeros Corporation (OMER) stock reported via SEC Form 4 filings.

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Nov 21, 2023	Demopulos Gregory A MD	Chairman, CEO & President	Buy	15,000	$1.68	$25.2K	123,945
Nov 17, 2023	Demopulos Peter A MD	Director	Buy	10,000	$1.53	$15.3K	208,516

OMER Insider Selling Activity

The following table shows recent insider sales of Omeros Corporation (OMER) stock reported via SEC Form 4 filings.

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
May 27, 2026	Cable Thomas J.	director	Sell	7,500	$11.61	$87.0K	35,067
Feb 18, 2026	Demopulos Gregory A MD	Chairman, CEO & President	Sell	357,678	$11.93	$4.27M0.5% OS	0
Jan 14, 2026	Borges David J.	officer: VP, Finance & CAO	Sell	60,000	$12.52	$750.9K	0Exit
May 23, 2023	Cable Thomas J.		Sell	5,000	$6.53	$32.6K	35,067
May 23, 2023	HANISH ARNOLD C		Sell	5,000	$6.46	$32.3K	0Exit
Jun 17, 2021	Demopulos Gregory A MD	CHAIRMAN, CEO & PRESIDENT	Sell	73,713	$14.96	$1.10M	2,026,986
May 21, 2021	Demopulos Gregory A MD	CHAIRMAN, CEO & PRESIDENT	Sell	73,713	$16.01	$1.18M	2,026,986
Apr 8, 2021	Demopulos Gregory A MD	CHAIRMAN, CEO & PRESIDENT	Sell	72,613	$17.84	$1.30M	2,026,986