OMEROS CORP - Common Stock (OMER) Institutional Ownership

13F Institutional Holders and Ownership History from Q1 2014 to Q4 2025

Type / Class
Equity / Common Stock
Symbol
OMER on Nasdaq
Shares outstanding
70,906,625
Price per share
$11.93
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
33,189,296
Total reported value
$569,877,704
% of total 13F portfolios
0%
Share change
-599,983
Value change
+$6,503,443
Number of holders
148
Price from insider filings
$11.93
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of OMEROS CORP - Common Stock (OMER) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
INGALLS & SNYDER LLC 7.2% $30,003,081 4,161,315 INGALLS & SNYDER LLC 31 Dec 2024
VANGUARD GROUP INC 5.7% +15% $68,928,685 +$11,444,681 4,013,315 +20% The Vanguard Group 31 Dec 2025

As of 31 Dec 2025, 148 institutional investors reported holding 33,189,296 shares of OMEROS CORP - Common Stock (OMER). This represents 47% of the company’s total 70,906,625 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of OMEROS CORP - Common Stock (OMER) together control 40% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
BlackRock, Inc. 7.1% 5,062,438 +14% 0% $86,947,374
VANGUARD GROUP INC 5.7% 4,013,315 +20% 0% $68,928,685
INGALLS & SNYDER LLC 4.9% 3,448,699 -16% 2.2% $59,231,000
UBS Group AG 3.1% 2,222,982 +213% 0.01% $38,179,715
STIFEL FINANCIAL CORP 2.6% 1,809,766 -0.14% 0.03% $31,082,740
GEODE CAPITAL MANAGEMENT, LLC 2.3% 1,631,350 +6.3% 0% $28,025,557
STATE STREET CORP 2.2% 1,573,526 +27% 0% $27,025,309
KOTLER KEVIN 1.3% 905,635 0% 11% $15,554,281
D. E. Shaw & Co., Inc. 1.1% 754,999 -25% 0.01% $12,967,108
SUSQUEHANNA INTERNATIONAL GROUP, LLP 1% 741,895 +571% 0.02% $12,742,047
Corient Private Wealth LLC 0.97% 687,325 +13% 0.02% $11,804,807
NOMURA HOLDINGS INC 0.92% 655,021 +1400% 0.09% $11,249,986
BANK OF MONTREAL /CAN/ 0.85% 601,643 +6.8% 0% $10,333,219
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.84% 593,222 +7.2% 0% $10,188,588
NORTHERN TRUST CORP 0.74% 526,732 -1.7% 0% $9,046,622
TWO SIGMA INVESTMENTS, LP 0.74% 524,757 -44% 0.01% $9,012,701
ROYAL BANK OF CANADA 0.7% 498,399 -8.3% 0% $8,560,000
JANE STREET GROUP, LLC 0.65% 463,622 +65% 0.01% $7,962,708
MILLENNIUM MANAGEMENT LLC 0.62% 441,811 +10% 0.01% $7,588,104
MORGAN STANLEY 0.54% 386,152 -81% 0% $6,632,161
Badgley Phelps Wealth Managers, LLC 0.37% 263,556 0% 0.08% $4,526,575
CITADEL ADVISORS LLC 0.34% 240,352 -39% 0% $4,128,046
Jump Financial, LLC 0.32% 228,000 0.05% $3,915,900
GOLDMAN SACHS GROUP INC 0.32% 227,294 -32% 0% $3,903,775
Informed Momentum Co LLC 0.29% 207,480 0.4% $3,563,469

Institutional Holders of OMEROS CORP - Common Stock (OMER) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 33,189,296 $569,877,704 +$6,503,443 $17.18 148
2025 Q3 32,836,318 $134,581,239 +$15,288,802 $4.10 131
2025 Q2 29,070,740 $87,223,943 +$2,273,539 $3.00 125
2025 Q1 27,567,515 $226,581,675 +$7,577,920 $8.22 136
2024 Q4 26,557,460 $262,301,855 +$14,547,060 $9.88 128
2024 Q3 25,028,393 $99,334,168 +$134,504 $3.97 108
2024 Q2 24,952,386 $101,360,144 -$1,926,321 $4.06 104
2024 Q1 25,442,708 $87,800,583 +$1,744,044 $3.45 99
2023 Q4 24,934,579 $81,671,960 -$6,212,868 $3.27 97
2023 Q3 26,962,290 $78,889,421 -$548,505 $2.92 99
2023 Q2 26,218,040 $142,820,753 +$31,895,859 $5.44 103
2023 Q1 20,410,989 $94,907,120 +$6,264,086 $4.65 90
2022 Q4 18,940,581 $42,804,746 -$2,530,643 $2.26 94
2022 Q3 20,467,966 $64,677,945 -$9,768,089 $3.15 88
2022 Q2 23,156,221 $63,878,574 -$18,491,343 $2.75 93
2022 Q1 28,773,729 $173,191,574 -$11,338,842 $6.01 126
2021 Q4 29,895,672 $192,479,545 -$15,061,374 $6.43 128
2021 Q3 29,738,972 $411,859,511 -$25,783,157 $13.79 137
2021 Q2 32,206,918 $478,330,095 -$40,537,441 $14.84 146
2021 Q1 34,754,657 $618,556,571 +$9,528,433 $17.80 148
2020 Q4 34,309,690 $491,009,495 -$7,202,867 $14.28 130
2020 Q3 34,911,239 $353,094,849 +$28,000,378 $10.10 133
2020 Q2 31,800,513 $467,894,511 +$8,008,700 $14.72 115
2020 Q1 31,179,601 $416,709,433 +$46,931,533 $13.37 119
2019 Q4 27,755,990 $391,090,927 +$23,145,208 $14.09 122
2019 Q3 25,975,517 $424,133,856 -$3,132,519 $16.33 110
2019 Q2 26,198,649 $410,992,237 +$15,502,325 $15.69 110
2019 Q1 25,414,081 $441,443,014 +$29,300,071 $17.37 113
2018 Q4 24,098,231 $268,536,926 -$12,225,923 $11.14 118
2018 Q3 23,232,569 $567,123,388 +$5,741,995 $24.41 123
2018 Q2 23,101,621 $419,070,764 +$24,598,063 $18.14 112
2018 Q1 22,103,294 $246,928,495 -$22,968,789 $11.17 108
2017 Q4 23,456,380 $455,771,987 -$13,390,842 $19.43 125
2017 Q3 23,988,052 $518,601,588 +$54,680,462 $21.62 108
2017 Q2 21,549,455 $428,965,835 +$35,741,791 $19.91 100
2017 Q1 19,767,505 $298,393,635 +$37,048,015 $15.12 97
2016 Q4 20,787,611 $206,216,429 -$10,538,972 $9.92 101
2016 Q3 23,681,893 $264,232,949 +$20,205,799 $11.16 97
2016 Q2 21,869,549 $230,117,146 +$22,657,733 $10.52 98
2016 Q1 19,105,703 $293,074,280 -$26,334,121 $15.34 98
2015 Q4 20,821,839 $327,468,858 -$10,455,325 $15.73 99
2015 Q3 21,499,016 $235,624,134 -$31,115,102 $10.96 102
2015 Q2 21,353,717 $384,137,368 +$3,507,947 $17.99 105
2015 Q1 20,682,656 $455,597,944 +$135,929,880 $22.03 100
2014 Q4 14,312,014 $354,299,409 +$35,801,814 $24.78 103
2014 Q3 12,831,228 $163,203,199 -$2,912,625 $12.72 84
2014 Q2 12,934,375 $225,046,474 +$19,184,296 $17.40 91
2014 Q1 12,171,676 $146,841,471 +$30,608,191 $12.07 83