Latest Period
Q2 2026
Security Snapshot
OMEROS CORP - Common Stock (OMER) Institutional Ownership
CUSIP: 682143102
13F Institutional Holders and Ownership History from Q1 2014 to Q2 2026
Institutions Reporting
168
Shares (Excl. Options)
35,929,273
Price
$9.51
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- Security type / class
- Equity / Common Stock
- Symbol
- OMER on Nasdaq
- All holders as of 30 Jun 2026
- Q2 2026
- Total 13F shares
- 35,929,273
- Total 13F value
- $341,793,201
- Portfolio coverage rank
- 0%
- Share change
- +5,068,520
- Value change
- +$46,982,971
- Number of holders
- 168
- Shares outstanding
- 72,704,780
- SEC-reported price per share
- $11.67
- Insider filing price
- $11.67
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- OMER - OMEROS CORP - Common Stock is tracked under CUSIP 682143102.
- 168 institutions reported positions in Q2 2026.
- 2 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 160 to 168 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $325,060,612 to $341,793,201.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 168 institutions filings for Q2 2026.
Security key
682143102
Latest holder period
Q2 2026
13F holders
168
13D/G owners
2
CIK / CUSIP context first
Open Q2 2026 holders
OMER full holder history
OMEROS CORP SEC filings
OMEROS CORP company facts
OMEROS CORP insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 682143102:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
2
Security
OMER
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 8.2% | $56,696,642 | 5,961,792 | BlackRock, Inc. | 30 Jun 2026 | |||
| INGALLS & SNYDER LLC | 4.8% | -34% | $36,604,830 | -$7,339,905 | 3,466,268 | -17% | INGALLS & SNYDER LLC | 31 Dec 2025 |
As of 30 Jun 2026, 168 institutional investors reported holding 35,929,273 shares of OMEROS CORP - Common Stock (OMER). This represents 49% of the company’s total 72,704,780 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
43%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 8.3% | 6,044,633 | +14% | 0% | $57,484,459 |
| INGALLS & SNYDER LLC | 5% | 3,659,523 | +2.8% | 0.95% | $34,802,000 |
| UBS Group AG | 4.3% | 3,148,384 | +35% | 0% | $29,941,131 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.2% | 3,072,050 | +3% | 0% | $29,215,196 |
| STATE STREET CORP | 3.2% | 2,319,906 | +21% | 0% | $22,062,306 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.6% | 1,914,460 | +9.3% | 0% | $18,210,941 |
| STIFEL FINANCIAL CORP | 2.5% | 1,836,925 | +0.29% | 0.01% | $17,469,159 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1.3% | 962,828 | +34% | 0% | $9,156,494 |
| Invesco Ltd. | 1% | 751,771 | +316% | 0% | $7,149,343 |
| NORTHERN TRUST CORP | 1% | 727,348 | +29% | 0% | $6,917,080 |
| Rock Springs Capital Management LP | 0.99% | 718,499 | 0.33% | $6,832,925 | |
| Corient Private Wealth LP | 0.91% | 659,730 | -18% | 0.01% | $6,274,033 |
| Rubric Capital Management LP | 0.9% | 656,874 | 0.06% | $6,246,872 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.83% | 604,633 | +3.8% | 0% | $5,750,060 |
| BANK OF MONTREAL /CAN/ | 0.78% | 568,424 | -0% | 0% | $5,405,712 |
| VANGUARD FIDUCIARY TRUST CO | 0.68% | 491,173 | -0.24% | 0% | $4,671,055 |
| FEDERATED HERMES, INC. | 0.66% | 478,290 | 0.01% | $4,548,538 | |
| Clutterbuck Capital Management LLC | 0.62% | 450,000 | +50% | 2.5% | $4,279,500 |
| TWO SIGMA INVESTMENTS, LP | 0.55% | 402,662 | +41% | 0% | $3,829,316 |
| MORGAN STANLEY | 0.54% | 394,459 | +24% | 0% | $3,751,306 |
| MILLENNIUM MANAGEMENT LLC | 0.47% | 343,839 | -16% | 0% | $3,269,909 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 0.45% | 325,194 | -33% | 0% | $3,092,595 |
| Badgley Phelps Wealth Managers, LLC | 0.36% | 263,556 | 0% | 0.04% | $2,506,418 |
| WELLINGTON MANAGEMENT GROUP LLP | 0.28% | 204,541 | +9.2% | 0% | $1,945,185 |
| Bank of New York Mellon Corp | 0.27% | 195,990 | +18% | 0% | $1,863,861 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
50
Latest
Q2 2026
Rows shown
1-25 of 50
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 35,929,273 | $341,793,201 | +$46,982,971 | $9.51 | 168 |
| 2026 Q1 | 30,779,168 | $325,060,612 | -$22,679,170 | $10.56 | 160 |
| 2025 Q4 | 33,208,453 | $570,206,725 | +$6,800,930 | $17.18 | 151 |
| 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 |