Omeros Corp

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Omeros Corp
TickerOMER
CIK #0001285819
CUSIP682143102
SectorLife Sciences - Pharmaceutical Preparations
Address1420 5th Ave Suite 2600, Seattle, WA 98101
Source [EDGAR]
Reg D Offering (Form D) Filed Raised Terms
Omeros Corp 2010-10-27 Exemption: 506 · Remaining: $11,999,970 · Duration: One year or less · Revenue: $1,000,001 - $5,000,000
CIK Filing 2011 - 2026
[0001285819] 10-K
[0001285819] 10-Q
[0001285819] 3
[0001285819] 4
[0001285819] 8-K
[0001285819] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
Vanguard Group Inc Omeros Corp [2026-01-30] 0.0
Vanguard Group Inc Omeros Corp [2024-02-13] 5.04
BlackRock Inc Omeros Corp [2024-01-29] 6.8
BlackRock Inc Omeros Corp [2022-07-08] 2.0
Vanguard Group Inc Omeros Corp [2021-02-10] 5.18
Cormorant Asset Management LP Omeros Corp [2020-05-04] 5.2
Consonance Capital Management LP Omeros Corp [2020-02-14] 6.0
D E Shaw & Co LP Omeros Corp [2019-05-10] 5.0
D E Shaw & Co LP Omeros Corp [2019-03-08] 5.1
Cormorant Global Healthcare Master Fund LP Omeros Corp [2017-11-07] 4.2
Cormorant Global Healthcare Master Fund LP Omeros Corp [2015-09-28] 5.2
Invesco Ltd Omeros Corp [2015-08-10] 10.2
BlackRock Inc Omeros Corp [2015-02-02] 5.7
BlackRock Inc Omeros Corp [2014-01-30] 5.3
RA Capital Management LLC Omeros Corp [2013-05-20] 0.9
Ingalls & Snyder LLC Omeros Corp [2013-04-11] 5.1
Form 3/4/5 Filer 2011 - 2026
Bumol Thomas F
Omeros Corp
Shah Rajiv
Perkinson Diana T
Hood Leroy E MD PhD
Hanish Arnold C
Demopulos Peter A MD
Cable Thomas J
Demopulos Gregory A MD
Borges David J
Cancelmo Peter B
Jacobsen Michael A
Zumwalt Kurt
Aspiri Ray
Kelbon Marcia S
Spiegelman Daniel K
Insider Transaction (Form 3/4/5) Date Action Shares Price Value ($)
Demopulos Gregory A MD
Common stock
2026-02-18 Option exercise 400,000 $10.27 4,108,000
Demopulos Gregory A MD
Stock option (right to buy) · derivative
2026-02-18 Option exercise 400,000 $0.00
Demopulos Gregory A MD
Common stock
2026-02-18 Tax withheld 357,678 $11.93 4,267,099
Borges David J
Stock Option (right to buy) · derivative
2026-01-13 Option exercise 30,000 $0.00
Borges David J
Common stock
2026-01-13 Option exercise 30,000 $3.06 91,800
Borges David J
Common stock
2026-01-13 Sell 30,000 $12.31 369,300
Borges David J
Common stock
2026-01-12 Sell 30,000 $12.72 381,600
Demopulos Gregory A MD
Common Stock
2025-10-13 Gift 300,000 $0.00
Demopulos Gregory A MD
Common Stock
2025-10-13 Gift 600,000 $0.00
Demopulos Gregory A MD
Common Stock
2025-10-13 Gift 300,000 $0.00
Borges David J
Stock Option (right to buy) · derivative
2025-06-30 Grant 95,000 $0.00
Cancelmo Peter B
Stock Option (right to buy) · derivative
2025-06-30 Grant 100,000 $0.00
Demopulos Gregory A MD
Stock Option (right to buy) · derivative
2025-06-30 Grant 865,000 $0.00
Perkinson Diana T
Stock Option (Right to Buy) · derivative
2025-06-27 Grant 15,000 $0.00
Hood Leroy E MD PhD
Stock Option (Right to Buy) · derivative
2025-06-27 Grant 15,000 $0.00
Bumol Thomas F
Stock Option (Right to Buy) · derivative
2025-06-27 Grant 15,000 $0.00
Shah Rajiv
Stock Option (Right to Buy) · derivative
2025-06-27 Grant 15,000 $0.00
Cable Thomas J
Stock Option (Right to Buy) · derivative
2025-06-27 Grant 15,000 $0.00
Demopulos Peter A MD
Stock Option (Right to Buy) · derivative
2025-06-27 Grant 15,000 $0.00
Hanish Arnold C
Stock Option (Right to Buy) · derivative
2025-06-27 Grant 15,000 $0.00
showing 20 of 200 most recent transactions
13F Ownership Over TimeHoldersShares Held
2026-03-31 161 28,988,324
2025-12-31 157 38,007,571
2025-09-30 139 33,859,478
2025-06-30 131 26,971,013
2025-03-31 141 24,389,944
2024-12-31 133 23,919,156
2024-09-30 110 21,153,843
2024-06-30 106 21,040,042
2024-03-31 101 21,731,984
2023-12-31 100 21,107,284
2023-09-30 105 23,117,962
2023-06-30 107 22,478,478
Form 13F Holdings
Firm Period DFND Voting Shares
Merit Financial Group LLC [2026-06-30] SOLE 0 26,420
Stordahl Capital Management Inc [2026-06-30] SOLE 0 22,860
Apella Capital LLC [2026-06-30] SOLE 0 14,288
RTD Financial Advisors Inc [2026-06-30] SOLE 0 11,700
B Riley Wealth Advisors Inc [2026-06-30] SOLE 11,369 11,369
Sowell Financial Services LLC [2026-06-30] SOLE 10,650 10,650
Farther Finance Advisors LLC [2026-06-30] SOLE 0 7,102
Strategic Investment Solutions Inc /IL [2026-06-30] SOLE 0 1,826
MassMutual Private Wealth & Trust FSB [2026-06-30] SOLE 745 745
Bear Mountain Capital Inc [2026-06-30] SOLE 485 485
Merit Financial Group LLC [2026-06-30] OTR 0 420
Gamma Investing LLC [2026-06-30] DFND 128 128
IFP Advisors LLC [2026-06-30] SOLE 26 26
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