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OMER Insider Trading

Insider Ownership Percentage: 12.90%
Insider Buying (Last 12 Months): $0.00
Insider Selling (Last 12 Months): $0.00

Omeros Insider Trading History Chart

This chart shows the insider buying and selling history at Omeros by year and by quarter.

Skip ChartChart Data in Insider Trading History Table

Omeros Share Price & Price History

Current Price: $11.03
Price Change: ▲ Price Increase of +0.41 (3.86%)
As of 12/4/2025 05:00 PM ET

This chart shows the closing price history over time for OMER up to the past year.

Skip Chart and Table DataPrice Data in Insider Trading History Table
Days: 30 | 90 | 365

Omeros Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
11/17/2023Gregory A. DemopulosCEOBuy15,000$1.68$25,200.00123,945View SEC Filing Icon  
11/15/2023Peter A. DemopulosDirectorBuy10,000$1.53$15,300.00208,516View SEC Filing Icon  
5/22/2023Arnold C. HanishDirectorSell5,000$6.46$32,300.0035,067View SEC Filing Icon  
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SEC Filings (Institutional Ownership Changes) for Omeros (NASDAQ:OMER)

48.79% of Omeros stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

This chart shows the instiutional buying and selling at OMER by year and by quarter.

Skip Institutional Buying and Selling Chart and Table DataRead Chart Data in Institutional Trading History Table

Omeros Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
11/17/2025Nomura Holdings Inc.43,681$0.18M0.0%-50.6%0.064%Search for SEC Filing on Google Icon
11/17/2025Millennium Management LLC401,814$1.65M0.0%+49.1%0.590%Search for SEC Filing on Google Icon
11/17/2025MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.30,186$0.12M0.0%-5.2%0.044%Search for SEC Filing on Google Icon
11/17/2025Brevan Howard Capital Management LP129,393$0.53M0.0%+22.9%0.190%Search for SEC Filing on Google Icon
11/14/2025Two Sigma Investments LP933,314$3.83M0.0%+39.3%1.371%Search for SEC Filing on Google Icon
11/14/2025Bridgeway Capital Management LLC56,715$0.23M0.0%+78.8%0.083%Search for SEC Filing on Google Icon
11/14/2025Squarepoint Ops LLC155,496$0.64M0.0%+75.8%0.228%Search for SEC Filing on Google Icon
11/14/2025Newbridge Financial Services Group Inc.134,510$0.55M0.1%+44.0%0.198%Search for SEC Filing on Google Icon
11/13/2025UBS Group AG709,089$2.91M0.0%-18.4%1.042%Search for SEC Filing on Google Icon
11/13/2025BNP Paribas Financial Markets88,117$0.36M0.0%+248.7%0.129%Search for SEC Filing on Google Icon
11/13/2025Russell Investments Group Ltd.10,695$44K0.0%+113.1%0.016%Search for SEC Filing on Google Icon
11/12/2025Intech Investment Management LLC25,643$0.11M0.0%-24.8%0.038%Search for SEC Filing on Google Icon
11/10/2025China Universal Asset Management Co. Ltd.21,929$90K0.0%+86.3%0.032%Search for SEC Filing on Google Icon
11/7/2025GSA Capital Partners LLP10,004$41K0.0%-73.8%0.015%Search for SEC Filing on Google Icon
11/7/2025Vanguard Group Inc.3,346,958$13.72M0.0%+1.9%4.918%Search for SEC Filing on Google Icon
11/7/2025JPMorgan Chase & Co.416,153$1.71M0.0%+1,201.1%0.611%Search for SEC Filing on Google Icon
11/6/2025Rhumbline Advisers105,873$0.43M0.0%+7.1%0.156%Search for SEC Filing on Google Icon
11/5/2025Stordahl Capital Management Inc.22,860$94K0.0%-30.0%0.034%Search for SEC Filing on Google Icon
10/29/2025Wealth Enhancement Advisory Services LLC29,097$0.13M0.0%+11.2%0.043%Search for SEC Filing on Google Icon
10/23/2025SG Americas Securities LLC45,324$0.19M0.0%+99.7%0.067%Search for SEC Filing on Google Icon
10/9/2025Voya Investment Management LLC11,189$46K0.0%-29.7%0.016%Search for SEC Filing on Google Icon
9/26/2025Corient Private Wealth LLC530,614$1.59M0.0%-26.3%0.780%Search for SEC Filing on Google Icon
8/19/2025B. Riley Wealth Advisors Inc.10,760$32K0.0%N/A0.017%Search for SEC Filing on Google Icon
8/19/2025Newbridge Financial Services Group Inc.93,420$0.28M0.0%N/A0.151%Search for SEC Filing on Google Icon
8/18/2025Nomura Holdings Inc.88,469$0.27M0.0%-87.0%0.143%Search for SEC Filing on Google Icon
8/15/2025Tower Research Capital LLC TRC 13,414$40K0.0%+829.6%0.022%Search for SEC Filing on Google Icon
8/15/2025Corient Private Wealth LLC530,614$1.59M0.0%-26.3%0.859%Search for SEC Filing on Google Icon
8/15/2025BNP Paribas Financial Markets25,272$76K0.0%+548.7%0.041%Search for SEC Filing on Google Icon
8/15/2025Brevan Howard Capital Management LP105,299$0.32M0.0%N/A0.170%Search for SEC Filing on Google Icon
8/15/2025Ameriprise Financial Inc.116,536$0.35M0.0%-3.3%0.189%Search for SEC Filing on Google Icon
8/14/2025Jane Street Group LLC85,382$0.26M0.0%-22.4%0.138%Search for SEC Filing on Google Icon
8/14/2025Raymond James Financial Inc.9,781$29K0.0%-22.1%0.016%Search for SEC Filing on Google Icon
8/14/2025Sei Investments Co.13,416$40K0.0%N/A0.022%Search for SEC Filing on Google Icon
8/13/2025Marshall Wace LLP741,376$2.22M0.0%+15.1%1.200%Search for SEC Filing on Google Icon
8/13/2025Invesco Ltd.116,688$0.35M0.0%+34.1%0.189%Search for SEC Filing on Google Icon
8/12/2025XTX Topco Ltd63,777$0.19M0.0%N/A0.103%Search for SEC Filing on Google Icon
8/12/2025Rhumbline Advisers98,825$0.30M0.0%-8.2%0.160%Search for SEC Filing on Google Icon
8/12/2025JPMorgan Chase & Co.31,985$96K0.0%-10.6%0.052%Search for SEC Filing on Google Icon
8/8/2025Intech Investment Management LLC34,108$0.10M0.0%+28.4%0.055%Search for SEC Filing on Google Icon
8/5/2025Corton Capital Inc.38,967$0.12M0.1%N/A0.063%Search for SEC Filing on Google Icon
8/5/2025Bank of Montreal Can571,095$1.71M0.0%+1.4%0.925%Search for SEC Filing on Google Icon
7/29/2025International Assets Investment Management LLC15,550$47K0.0%N/A0.027%Search for SEC Filing on Google Icon
7/28/2025Harbour Investments Inc.13,469$40K0.0%+46.1%0.023%Search for SEC Filing on Google Icon
7/25/2025Cypress Capital Group42,000$0.13M0.0%+20.7%0.072%Search for SEC Filing on Google Icon
7/21/2025Empirical Financial Services LLC d.b.a. Empirical Wealth Management40,500$0.12M0.0%+35.0%0.069%Search for SEC Filing on Google Icon
7/10/2025Wealth Enhancement Advisory Services LLC26,156$84K0.0%-62.8%0.045%Search for SEC Filing on Google Icon
6/27/2025Goldman Sachs Group Inc.181,155$1.49M0.0%-14.4%0.309%Search for SEC Filing on Google Icon
5/21/2025Acadian Asset Management LLC43,695$0.36M0.0%N/A0.075%Search for SEC Filing on Google Icon
5/16/2025Goldman Sachs Group Inc.181,155$1.49M0.0%-14.4%0.311%Search for SEC Filing on Google Icon
5/16/2025Jacobs Levy Equity Management Inc.85,514$0.70M0.0%-18.2%0.147%Search for SEC Filing on Google Icon
5/16/2025AQR Capital Management LLC34,700$0.29M0.0%-11.5%0.060%Search for SEC Filing on Google Icon
5/16/2025Ancora Advisors LLC5,800$48K0.0%-93.2%0.010%Search for SEC Filing on Google Icon
5/15/2025Nomura Holdings Inc.679,020$5.58M0.0%-9.1%1.165%Search for SEC Filing on Google Icon
5/15/2025Trexquant Investment LP10,760$88K0.0%N/A0.018%Search for SEC Filing on Google Icon
5/14/2025AlphaQuest LLC15,687$0.13M0.0%-45.7%0.027%Search for SEC Filing on Google Icon
5/14/2025Hsbc Holdings PLC17,138$0.14M0.0%N/A0.029%Search for SEC Filing on Google Icon
5/14/2025Wellington Management Group LLP136,002$1.12M0.0%N/A0.233%Search for SEC Filing on Google Icon
5/12/2025Nuveen LLC114,057$0.94M0.0%N/A0.196%Search for SEC Filing on Google Icon
5/12/2025Invesco Ltd.87,044$0.72M0.0%+169.1%0.149%Search for SEC Filing on Google Icon
5/12/2025Connor Clark & Lunn Investment Management Ltd.10,555$87K0.0%-90.7%0.018%Search for SEC Filing on Google Icon
5/9/2025Deutsche Bank AG42,019$0.35M0.0%+4.9%0.072%Search for SEC Filing on Google Icon
5/9/2025Charles Schwab Investment Management Inc.463,882$3.81M0.0%-2.4%0.796%Search for SEC Filing on Google Icon
5/9/2025Vanguard Group Inc.3,237,256$26.61M0.0%+3.0%5.552%Search for SEC Filing on Google Icon
5/8/2025SPC Financial Inc.17,400$0.14M0.0%-10.3%0.030%Search for SEC Filing on Google Icon
5/8/2025Harbour Investments Inc.9,218$76K0.0%+51.9%0.016%Search for SEC Filing on Google Icon
5/5/2025Stordahl Capital Management Inc.32,656$0.27M0.1%-18.4%0.056%Search for SEC Filing on Google Icon
5/1/2025New York State Common Retirement Fund11,413$94K0.0%-34.1%0.020%Search for SEC Filing on Google Icon
4/29/2025Bank of New York Mellon Corp151,062$1.24M0.0%+2.2%0.260%Search for SEC Filing on Google Icon
4/17/2025Sowell Financial Services LLC10,750$88K0.0%N/A0.019%Search for SEC Filing on Google Icon
4/17/2025Brighton Jones LLC30,714$0.25M0.0%+11.3%0.053%Search for SEC Filing on Google Icon
4/16/2025Wealth Enhancement Advisory Services LLC70,398$0.58M0.0%N/A0.121%Search for SEC Filing on Google Icon
4/7/2025GAMMA Investing LLC7,439$61K0.0%+14,486.3%0.013%Search for SEC Filing on Google Icon
2/17/2025Squarepoint Ops LLC32,009$0.32M0.0%-32.4%0.055%Search for SEC Filing on Google Icon
2/17/2025Two Sigma Advisers LP38,800$0.38M0.0%-15.7%0.067%Search for SEC Filing on Google Icon
2/17/2025Two Sigma Investments LP162,991$1.61M0.0%+8.8%0.281%Search for SEC Filing on Google Icon
2/17/2025ProShare Advisors LLC18,496$0.18M0.0%+75.0%0.032%Search for SEC Filing on Google Icon
2/17/2025Nomura Holdings Inc.747,281$7.38M0.0%+136.2%1.290%Search for SEC Filing on Google Icon
2/17/2025Nuveen Asset Management LLC102,921$1.02M0.0%-8.4%0.178%Search for SEC Filing on Google Icon
2/17/2025Millennium Management LLC85,671$0.85M0.0%+46.2%0.148%Search for SEC Filing on Google Icon
2/17/2025MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.31,831$0.31M0.0%+3.6%0.055%Search for SEC Filing on Google Icon
2/17/2025Jacobs Levy Equity Management Inc.104,538$1.03M0.0%N/A0.180%Search for SEC Filing on Google Icon
2/17/2025Deutsche Bank AG40,046$0.40M0.0%+38.2%0.069%Search for SEC Filing on Google Icon
2/17/2025Bridgeway Capital Management LLC155,100$1.53M0.0%-3.8%0.268%Search for SEC Filing on Google Icon
2/17/2025BNP Paribas Financial Markets7,452$74K0.0%-39.8%0.013%Search for SEC Filing on Google Icon
2/17/2025Ameriprise Financial Inc.120,493$1.19M0.0%+2.0%0.208%Search for SEC Filing on Google Icon
2/17/2025Ancora Advisors LLC85,800$0.85M0.0%+1,036.4%0.148%Search for SEC Filing on Google Icon
2/14/2025Comerica Bank35,000$0.35M0.0%+16.7%0.060%Search for SEC Filing on Google Icon
2/14/2025The Manufacturers Life Insurance Company20,479$0.20M0.0%-5.4%0.035%Search for SEC Filing on Google Icon
2/14/2025Susquehanna Fundamental Investments LLC150,557$1.49M0.0%N/A0.260%Search for SEC Filing on Google Icon
2/14/2025Virtus ETF Advisers LLC8,373$83K0.0%N/A0.014%Search for SEC Filing on Google Icon
2/14/2025Voya Investment Management LLC17,233$0.17M0.0%-9.4%0.030%Search for SEC Filing on Google Icon
2/14/2025Price T Rowe Associates Inc. MD39,582$0.39M0.0%+12.5%0.068%Search for SEC Filing on Google Icon
2/14/2025Stifel Financial Corp1,581,205$15.62M0.0%-17.0%2.729%Search for SEC Filing on Google Icon
2/14/2025Tower Research Capital LLC TRC4,467$44K0.0%+79.0%0.008%Search for SEC Filing on Google Icon
2/13/2025Marshall Wace LLP44,205$0.44M0.0%N/A0.076%Search for SEC Filing on Google Icon
2/13/2025XTX Topco Ltd20,846$0.21M0.0%N/A0.036%Search for SEC Filing on Google Icon
2/13/2025Barclays PLC103,726$1.03M0.0%+9.6%0.179%Search for SEC Filing on Google Icon
2/13/2025Raymond James Financial Inc.12,549$0.12M0.0%N/A0.022%Search for SEC Filing on Google Icon
2/13/2025Invesco Ltd.32,348$0.32M0.0%-6.0%0.056%Search for SEC Filing on Google Icon
2/13/2025Cerity Partners LLC28,989$0.29M0.0%+9.9%0.050%Search for SEC Filing on Google Icon
Data available starting January 2016

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Omeros logo
Omeros Corporation, a clinical-stage biopharmaceutical company, discovers, develops, and commercializes small-molecule and protein therapeutics, and orphan indications targeting immunologic diseases, including complement-mediated diseases, cancers, and addictive and compulsive disorders. The company's products under development include Narsoplimab (OMS721/MASP-2) that has completed pivotal trial for hematopoietic stem-cell transplant-associated thrombotic microangiopathy (TA-TMA); that is in Phase III clinical trial for the treatment of immunoglobulin A nephropathy (IgAN); and Phase II clinical trial to treat COVID-19. It also develops OMS1029 that is in phase I clinical trials for long-acting second-generation antibody targeting lectin pathway disorders; OMS906 that has completed phase II clinical trials for Paroxysmal nocturnal hemoglobinuria, complement 3 glomerulopathy, and other alternative pathway disorders; and OMS527 that is in phase I clinical trials for addictions and compulsive disorders, and movement disorders. In addition, the company's products under preclinical development comprise MASP-2, a pro-inflammatory protein target for the treatment of lectin pathway disorders; MASP-3 small-molecule inhibitors for alternative pathway disorders; and Adoptive T-Cell and Chimeric Antigen Receptor (CAR) T-Cell Therapies and Immunomodulators/Immunotoxins/Cancer Vaccines for the treatment of various cancers. Omeros Corporation was incorporated in 1994 and is headquartered in Seattle, Washington.
Read More on Omeros

Today's Range

Now: $11.03
Low: $10.34
High: $11.03

50 Day Range

MA: $7.25
Low: $4.10
High: $11.03

52 Week Range

Now: $11.03
Low: $2.95
High: $13.60

Volume

1,265,693 shs

Average Volume

1,723,945 shs

Market Capitalization

$782.03 million

P/E Ratio

N/A

Dividend Yield

N/A

Beta

2.48

Who are the major institutional investors of Omeros?

Omeros' top institutional shareholders include:
  1. Vanguard Group Inc. — 4.92%
  2. Two Sigma Investments LP — 1.37%
  3. UBS Group AG — 1.04%
  4. JPMorgan Chase & Co. — 0.61%
  5. Millennium Management LLC — 0.59%
  6. Caption Management LLC — 0.00%
Learn More about top institutional investors of Omeros stock.

Which institutional investors are selling Omeros stock?

During the last quarter, OMER stock was sold by these institutional investors:
  1. UBS Group AG
  2. Nomura Holdings Inc.
  3. GSA Capital Partners LLP
  4. Stordahl Capital Management Inc.
  5. Intech Investment Management LLC
  6. Voya Investment Management LLC
  7. MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.

Which institutional investors are buying Omeros stock?

During the last quarter, OMER stock was purchased by institutional investors including:
  1. JPMorgan Chase & Co.
  2. Caption Management LLC
  3. Two Sigma Investments LP
  4. Millennium Management LLC
  5. Citadel Advisors LLC
  6. Susquehanna International Group LLP
  7. Squarepoint Ops LLC
  8. Vanguard Group Inc.