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OMER
NASDAQ Life Sciences

EU Regulator Issues Negative Opinion on Omeros' Narsoplimab, Shares Plunge 25%

Tom Rudovsky · Reported by Dow Jones Newswires
More coverage: Biotech Stocks · Healthcare
Sentiment info
Negative
Importance info
9
Price
$8
Mkt Cap
$775.864M
52W Low
$2.95
52W High
$17.65
52W Position info
171% above low
Off High info
55% below high
Rel. Volume info
0.7× avg
Market data snapshot near publication time

OMER has more than doubled off its 52-week low of $2.95.

Summary

The European Medicines Agency (EMA) has issued a negative opinion on Omeros' marketing authorization application for narsoplimab, a drug for hematopoietic stem-cell transplant-associated thrombotic microangiopathy (TA-TMA). This is a major setback for the company's efforts to commercialize the drug in Europe, despite its current approval in the U.S. The news immediately sent shares down 25% in premarket trading, significantly impacting the company's growth prospects following its recent return to profitability with YARTEMLEA. Omeros plans to request a re-examination of the opinion.

At the time of this announcement, OMER was trading at $8.00 on NASDAQ in the Life Sciences sector, with a market capitalization of approximately $775.9M. The 52-week trading range was $2.95 to $17.65. This news item was assessed with negative market sentiment and an importance score of 9 out of 10. Source: Dow Jones Newswires.


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OMER - Latest Insights

OMER
Aug 03, 2026, 8:30 AM EDT
Source: BusinessWire
Importance Score:
8
Price at Filing: $12.00
Real-time Price: $13.19 info
Change: +$1.19 (+10%) info
Market Cap: $958.973M info
OMER
Jul 20, 2026, 5:05 PM EDT
Filing Type: 8-K
Importance Score:
7
Price at Filing: $9.59
Real-time Price: $13.19 info
Change: +$3.60 (+38%) info
Market Cap: $958.973M info
OMER
Jul 06, 2026, 8:30 AM EDT
Filing Type: 8-K
Importance Score:
8
Price at Filing: $9.30
Real-time Price: $13.19 info
Change: +$3.89 (+42%) info
Market Cap: $958.973M info
OMER
Jun 25, 2026, 6:02 AM EDT
Filing Type: 8-K
Importance Score:
7
Price at Filing: $10.83
Real-time Price: $13.19 info
Change: +$2.36 (+22%) info
Market Cap: $958.973M info
OMER
Jun 18, 2026, 7:52 AM EDT
Filing Type: 8-K
Importance Score:
8
Price at Filing: $9.75
Real-time Price: $13.19 info
Change: +$3.44 (+35%) info
Market Cap: $958.973M info