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Disclosery

OMER OMEROS CORP

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COM (common), issuer CIK 1285819

155 managers (162 13F filers) reported a position in OMER shares at 2026-03-31, 30,846,168 shares in all. 32 filers opened a position and 22 filers sold out during the quarter.

Managers
155
13F filers
162
New
32
Added
63
Reduced
40
Sold out
22
Shares held by filers
30,846,168

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
BlackRock, Inc.in group BlackRock, Inc.5,309,626$56.1M<0.01%+247,18813F-HRTimelineGroup
VANGUARD GROUP INCgroup of 4 filers holding4,235,400$44.7MnewTimeline
INGALLS & SNYDER LLC3,559,423$37.6M1.33%+110,72413F-HRTimeline
UBS Group AGgroup of 2 filers holding2,341,278$24.7M+118,065Timeline
STATE STREET CORPin group STATE STREET CORP1,919,575$20.3M<0.01%+346,04913F-HRTimelineGroup
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP1,831,585$19.3M0.02%+21,81913F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC1,752,323$18.5M<0.01%+120,97313F-HRTimelineGroup
Corient Private Wealth LPin group Corient Private Wealth LP801,411$8.46M0.01%+113,38613F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co582,512$6.15M<0.01%-10,71013F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 2 filers holding577,789$6.1M-256,865Timeline
BANK OF MONTREAL /CAN/in group BANK OF MONTREAL /CAN/568,426$6M<0.01%-33,21713F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP563,867$5.95M<0.01%+37,13513F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC410,609$4.34M<0.01%-31,20213F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY317,892$3.36M<0.01%-68,26013F-HRTimelineGroup
Clutterbuck Capital Management LLC300,000$3.17M1.93%+150,00013F-HRTimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP286,474$3.03M<0.01%-238,28313F-HRTimelineGroup
Badgley Phelps Wealth Managers, LLC263,556$2.78M0.06%013F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC260,048$2.75M<0.01%+19,69613F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/204,805$2.16M<0.01%+89,99713F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC202,893$2.14M<0.01%-24,40113F-HRTimelineGroup
Polar Asset Management Partners Inc.200,000$2.11M0.05%+131,20013F-HRTimeline
Jump Financial, LLCin group Jump Financial, LLC195,824$2.07M0.03%-32,17613F-HRTimelineGroup
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…187,300$1.98M<0.01%-15,31713F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.180,629$1.91M<0.01%+25,84713F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP179,594$1.9M<0.01%+82,64613F-HRTimelineGroup
Prosight Management, LP174,800$1.85M0.3%new13F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp166,246$1.76M<0.01%+46413F-HRTimelineGroup
Nuveen, LLCin group TIAA154,201$1.63M<0.01%+1,01413F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC145,307$1.53M<0.01%-318,31513F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN118,343$1.25M<0.01%-46,93713F-HR/ATimelineGroup
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC117,948$1.25M<0.01%+94413F-HR/ATimelineGroup
Ancora Advisors LLCin group Ancora Advisors LLC115,000$1.21M0.03%+55,75013F-HRTimelineGroup
HighTower Advisors, LLC110,630$1.17M<0.01%+6,57113F-HRTimeline
ALLIANCEBERNSTEIN L.P.66,990$1.15M<0.01%-6,50013F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/107,293$1.13M<0.01%+11,54813F-HRTimeline
RHUMBLINE ADVISERS102,818$1.09M<0.01%+2,71313F-HRTimeline
Cambridge Investment Research Advisors,…88,568$935K<0.01%+6,92513F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP83,682$884K<0.01%new13F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.71,168$752K<0.01%-683,83113F-HRTimelineGroup
AMERICAN FINANCIAL GROUP INCin group AMERICAN FINANCIAL GROUP INC64,113$677K0.25%013F-HRTimelineGroup
Quantinno Capital Management LP61,541$650K<0.01%+36,46713F-HRTimeline
MINDSET WEALTH MANAGEMENT, LLC59,500$628K0.17%+7,50013F-HRTimeline
MML INVESTORS SERVICES, LLC57,675$609K<0.01%-20,20013F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS56,908$601K<0.01%+40,55713F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\55,030$581K<0.01%+6,33613F-HRTimelineGroup
COLDSTREAM CAPITAL MANAGEMENT INC54,130$572K0.01%+52513F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…51,163$540K0.01%-13,79413F-HRTimelineGroup
Headlands Technologies LLC49,926$527K0.06%new13F-HRTimeline
NFSG Corp47,710$504K0.08%+13,40013F-HRTimeline
Focus Partners Wealthin group Focus Partners Wealth47,582$502K<0.01%+16,54813F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC44,922$474K<0.01%-75,56813F-HRTimelineGroup
Walleye Capital LLCgroup of 2 filers holding40,963$433K-138,646Timeline
FIFTH THIRD BANCORPin group FIFTH THIRD BANK, NATIONAL AS…39,000$412K<0.01%+38,00013F-HRTimelineGroup
AXQ CAPITAL, LP38,815$410K0.05%+9,66413F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO41,720$409K<0.01%+4,52913F-HR/ATimelineGroup
MetLife Investment Management, LLCin group MetLife Investment Management…38,634$408K<0.01%+2,43413F-HRTimelineGroup
GROUP ONE TRADING LLC38,604$408K0.01%-94,66513F-HRTimeline
OPTIMIZE FINANCIAL INC.38,407$406K0.2%new13F-HRTimeline
NOMURA HOLDINGS INCin group NOMURA ASSET MANAGEMENT CO LTD38,237$404K<0.01%-616,78413F-HRTimelineGroup
SIMPLEX TRADING, LLC37,526$396K0.01%-86,45313F-HRTimeline
Mirae Asset Global Investments Co., Ltd.group of 2 filers holding35,399$374K+1,369Timeline
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC32,778$345K<0.01%new13F-HRTimelineGroup
BRIGHTON JONES LLC31,880$337K0.01%new13F-HR/ATimeline
Cerity Partners LLCin group Cerity Partners LLC31,586$334K<0.01%+1,13613F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC30,790$325K<0.01%+3,30113F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC30,178$319K<0.01%+7,34013F-HRTimelineGroup
Diametric Capital, LP29,322$310K0.08%new13F-HRTimeline
Balyasny Asset Management L.P.in group Balyasny Asset Management29,083$307K<0.01%new13F-HRTimelineGroup
Vontobel Holding Ltd.in group Vontobel Holding Ltd.28,450$300K<0.01%+23,00013F-HRTimelineGroup
BRIDGEWAY CAPITAL MANAGEMENT, LLC27,000$285K0.01%-29,71513F-HRTimeline
Merit Financial Group, LLC26,993$285K<0.01%new13F-HRTimeline
Virtus Investment Advisers, LLCin group Virtus Investment Advisers, L…26,865$284K0.08%+65313F-HRTimelineGroup
GSA CAPITAL PARTNERS LLP23,967$253K0.02%new13F-HRTimeline
FARALLON CAPITAL MANAGEMENT, L.L.C.23,000$243K<0.01%013F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Stordahl Capital Management, Inc.22,860$241K0.05%013F-HRTimeline
HARBOUR INVESTMENTS, INC.22,025$233K<0.01%+19013F-HRTimeline
Avantax Planning Partners, Inc.21,100$223K0.01%+7,90013F-HRTimeline
Creative Planningin group Creative Planning21,047$222K<0.01%+4,13113F-HRTimelineGroup
NEW YORK STATE COMMON RETIREMENT FUND20,713$219K<0.01%013F-HRTimeline
PROFUND ADVISORS LLC20,647$218K0.01%+6,31713F-HRTimeline
LPL Financial LLC19,608$207K<0.01%new13F-HRTimeline
China Universal Asset Management Co., L…18,982$200K0.02%+2,42913F-HRTimeline
FMR LLCin group FMR LLC18,677$197K<0.01%+60913F-HRTimelineGroup
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …18,454$195K<0.01%-1,39613F-HRTimelineGroup
INTECH INVESTMENT MANAGEMENT LLC18,276$193K<0.01%-11,69113F-HRTimeline
Apella Capital, LLC14,288$192K<0.01%013F-HRTimeline
WEALTH ENHANCEMENT ADVISORY SERVICES, L…17,475$190K<0.01%-14,25313F-HRTimeline
Breakwater Investment Management17,048$180K0.07%013F-HRTimeline
Police & Firemen's Retirement System of…16,360$173K<0.01%013F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd15,251$161K<0.01%new13F-HRTimelineGroup
nVerses Capital, LLC14,404$152K0.14%new13F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…13,998$148K<0.01%-1613F-HRTimelineGroup
CANADA PENSION PLAN INVESTMENT BOARD13,900$147K<0.01%-7,80013F-HRTimeline
SEI INVESTMENTS COin group SEI INVESTMENTS CO13,171$139K<0.01%-18,59513F-HRTimelineGroup
ProShare Advisors LLC13,118$139K<0.01%-2,05313F-HRTimeline
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC12,905$136K<0.01%new13F-HRTimelineGroup
Rafferty Asset Management, LLC12,298$130K<0.01%+7213F-HRTimeline
DeepCurrents Investment Group LLC12,130$128K0.01%new13F-HRTimeline
STATE OF WISCONSIN INVESTMENT BOARD11,799$125K<0.01%new13F-HRTimeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC11,523$122K<0.01%+11813F-HRTimelineGroup
Sowell Financial Services LLC10,650$112K<0.01%013F-HRTimeline
LMR Partners LLPin group LMR Partners LLP10,634$112K<0.01%new13F-HRTimelineGroup
B. Riley Wealth Advisors, Inc.11,369$112K0.01%013F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC10,276$109K<0.01%-1,96613F-HRTimelineGroup
Leonteq Securities AG10,000$106K0.01%new13F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…8,411$88.8K<0.01%+6,49513F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.8,351$88.2K<0.01%+80413F-HRTimelineGroup
Farther Finance Advisors, LLC7,106$85.8K<0.01%013F-HRTimeline
Atlantic Union Bankshares Corpin group Atlantic Union Bankshares Corp7,000$73.9K<0.01%new13F-HRTimelineGroup
INTERNATIONAL ASSETS INVESTMENT MANAGEM…5,800$70.1K<0.01%+80013F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc6,068$64.1K<0.01%-90313F-HRTimelineGroup
US BANCORP \DE\in group US BANCORP \DE\5,103$53.9K<0.01%new13F-HRTimelineGroup
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…5,027$53.1K<0.01%013F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…3,752$39.6K<0.01%-30313F-HRTimeline
Optiver Holding B.V.in group Optiver Holding B.V.3,681$38.9K<0.01%-6613F-HR/ATimelineGroup
Quantbot Technologies LP3,650$38.5K<0.01%-3,57013F-HRTimeline
ASSETMARK, INCin group ASSETMARK, INC3,600$38K<0.01%new13F-HRTimelineGroup
NISA INVESTMENT ADVISORS, LLC3,425$36.2K<0.01%+2,62113F-HRTimeline
Caitong International Asset Management …3,191$33.7K0.01%-6,08513F-HRTimeline
Strategic Investment Solutions, Inc. /IL1,827$19.3K<0.01%013F-HRTimeline
GF FUND MANAGEMENT CO. LTD.1,583$16.7K<0.01%+19113F-HRTimeline
Steward Partners Investment Advisory, L…1,500$15.8K<0.01%new13F-HRTimeline
CWM, LLCin group CWM, LLC1,412$14.9K<0.01%+18013F-HRTimelineGroup
NewEdge Advisors, LLC1,300$13.7K<0.01%+30013F-HR/ATimeline
Pinnacle Wealth Planning Services, Inc.1,231$13K<0.01%new13F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP1,193$12.3K<0.01%new13F-HRTimelineGroup
Capital Analysts, LLCin group Capital Analysts, LLC1,000$11K<0.01%013F-HRTimelineGroup
Plante Moran Financial Advisors, LLC1,000$10.6K<0.01%013F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…975$10.3K<0.01%+78013F-HRTimelineGroup
Truvestments Capital LLC946$9.99K<0.01%-73613F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…793$8.37K<0.01%+2813F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA800$8K<0.01%-497,59913F-HRTimelineGroup
Parallel Advisors, LLC750$7.92K<0.01%-3,15913F-HR/ATimeline
Philadelphia Investment Partners, LLC729$7.7K0.01%13F-HRTimeline
Sterling Capital Management LLC669$7.07K<0.01%-23213F-HRTimeline
Bear Mountain Capital, Inc.485$6.53K<0.01%new13F-HRTimeline
MassMutual Private Wealth & Trust, FSB583$6.16K<0.01%+22313F-HRTimeline
Larson Financial Group LLC508$5.36K<0.01%+35713F-HRTimeline
NORTHWESTERN MUTUAL WEALTH MANAGEMENT COin group NORTHWESTERN MUTUAL INVESTMEN…500$5.28K<0.01%013F-HRTimelineGroup
Allworth Financial LP497$5.25K<0.01%+45313F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…377$3.98K<0.01%013F-HRTimelineGroup
Federation des caisses Desjardins du Qu…300$3.17K<0.01%013F-HRTimeline
SBI Securities Co., Ltd.208$2.2K<0.01%013F-HRTimeline
CDKV HOLDINGS LLC155$1.64K<0.01%new13F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…130$1.37K<0.01%+1513F-HR/ATimelineGroup
GAMMA Investing LLC128$1.35K<0.01%+2113F-HRTimeline
ROTHSCHILD INVESTMENT LLC45$475<0.01%-1513F-HRTimeline
TWIN PEAKS WEALTH ADVISORS, LLC41$433<0.01%new13F-HRTimeline
Stone House Investment Management, LLC39$412<0.01%new13F-HRTimeline
IFP Advisors, Inc26$275<0.01%013F-HRTimeline
Keating Financial Advisory Services, In…18$190<0.01%new13F-HRTimeline
MAI Capital Management13$138<0.01%new13F-HRTimeline
Essential Partners LLC11$116<0.01%013F-HRTimeline
Transamerica Financial Advisors, LLCin group Transamerica Financial Adviso…5$52<0.01%new13F-HRTimelineGroup
Covestor Ltd10$00%new13F-HRTimelineValue filed as zero, left out of ratios.