DaveManuel.com · Institutional Ownership · Who Owns It
ETON PHARMACEUTICALS INC (ETON)
Institutional ownership reported to the SEC as of Q2 2026, across 32 quarters.
166
Reporting holders
$775.5M
Reported value
74.1%
Of shares outstanding
0.6%
Calls
0.5%
Puts
+47
Holder change
Institutions report 21,181,529 shares against 28,583,135 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| Opaleye Management Inc. | $103.5M | 2,860,000 | 9.38% | 31q | HELD |
| Nantahala Capital Management, LLC | $85.1M | 2,351,902 | 1.41% | 9q | +100.0%+$42.6M |
| EcoR1 Capital, LLC | $78.6M | 2,171,938 | 3.82% | 8q | HELD |
| BlackRock, Inc. | $68.6M | 1,895,833 | 0.00% | 8q | +10.4%+$6.5M |
| VANGUARD CAPITAL MANAGEMENT LLC | $35.4M | 976,570 | 0.00% | 2q | -1.8%-$634.2K |
| MORGAN STANLEY | $27.8M | 767,972 | 0.00% | 29q | +60.7%+$10.5M |
| STATE STREET CORP | $25.4M | 701,786 | 0.00% | 25q | +32.4%+$6.2M |
| GEODE CAPITAL MANAGEMENT, LLC | $23.6M | 652,303 | 0.00% | 25q | +12.9%+$2.7M |
| OBERWEIS ASSET MANAGEMENT INC/ | $18.2M | 501,600 | 0.38% | 4q | +14.2%+$2.3M |
| National Philanthropic Trust | $17.8M | 492,112 | 0.26% | 11q | HELD |
| Westside Investment Management, Inc. | $15.6M | 431,160 | 2.05% | 26q | -7.9%-$1.3M |
| Pillsbury Lake Capital LLC | $14.0M | 387,157 | 3.83% | 2q | +6.1%+$803.7K |
| Nuveen, LLC | $13.6M | 375,707 | 0.00% | 5q | +548.3%+$11.5M |
| BNP PARIBAS FINANCIAL MARKETS | $11.7M | 322,466 | 0.00% | 25q | +6.7%+$737.0K |
| Woodline Partners LP | $11.3M | 310,879 | 0.03% | 3q | +82.1%+$5.1M |
| THOMPSON SIEGEL & WALMSLEY LLC | $10.8M | 297,232 | 0.19% | 9q | -26.8%-$3.9M |
| NORTHERN TRUST CORP | $9.3M | 255,849 | 0.00% | 28q | +7.6%+$652.2K |
| MARSHALL WACE, LLP | $9.0M | 249,182 | 0.01% | 2q | +201.2%+$6.0M |
| JANE STREET GROUP, LLC | $8.0M incl. $1.2M options CALL+PUT | 185,697 | 0.00% | 4q | +94.6%+$3.9M |
| Panoramic Capital, LLC | $7.5M | 208,192 | 3.24% | 2q | +12.5%+$839.6K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $7.0M | 194,591 | 0.00% | 2q | +28.2%+$1.6M |
| JPMORGAN CHASE & CO | $7.0M | 191,635 | 0.00% | 8q | +12.8%+$799.2K |
| D. E. Shaw & Co., Inc. | $6.8M | 188,452 | 0.00% | new | NEW |
| Lumbard & Kellner, LLC | $6.4M | 175,909 | 1.93% | 4q | HELD |
| CANNELL CAPITAL LLC | $6.2M | 170,747 | 4.14% | 7q | -50.1%-$6.2M |
| NORGES BANK | $6.1M | 169,500 | 0.00% | new | NEW |
| VANGUARD FIDUCIARY TRUST CO | $6.1M | 168,539 | 0.00% | 2q | +2.3%+$138.4K |
| Informed Momentum Co LLC | $5.7M | 158,045 | 0.51% | 2q | +225.0%+$4.0M |
| Prospect Capital Advisors, LLC | $5.7M | 157,200 | 2.58% | new | NEW |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $5.3M incl. $4.8M options CALL+PUT | 14,505 | 0.00% | 12q | -57.4%-$7.2M |
| Aristides Capital LLC | $5.3M | 145,410 | 1.02% | 9q | -21.8%-$1.5M |
| BANK OF AMERICA CORP /DE/ | $5.1M | 142,257 | 0.00% | 9q | -1.5%-$76.4K |
| PRELUDE CAPITAL MANAGEMENT, LLC | $5.0M | 137,572 | 0.36% | 7q | -27.1%-$1.9M |
| GOLDMAN SACHS GROUP INC | $4.8M | 132,583 | 0.00% | 7q | -39.0%-$3.1M |
| Bank of New York Mellon Corp | $4.3M | 118,249 | 0.00% | 25q | +6.3%+$253.2K |
| TWO SIGMA INVESTMENTS, LP | $4.2M | 116,291 | 0.00% | 7q | +9.3%+$358.3K |
| WELLS FARGO & COMPANY/MN | $4.2M | 114,655 | 0.00% | 7q | +1099.4%+$3.8M |
| WASATCH ADVISORS LP | $3.4M | 92,742 | 0.02% | new | NEW |
| Bridge City Capital, LLC | $3.2M | 88,132 | 0.73% | 4q | +316.7%+$2.4M |
| Walleye Capital LLC | $3.1M | 86,249 | 0.01% | 2q | +5.2%+$155.2K |
| CITADEL ADVISORS LLC | $3.1M incl. $1.3M options PUT | 48,969 | 0.00% | 14q | -54.6%-$3.7M |
| ANCHOR CAPITAL ADVISORS LLC | $2.9M | 81,238 | 0.04% | 7q | +98.8%+$1.5M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $2.8M | 77,032 | 0.00% | 17q | +12.0%+$298.2K |
| WELLINGTON MANAGEMENT GROUP LLP | $2.8M | 76,103 | 0.00% | 6q | +8.5%+$216.4K |
| Diametric Capital, LP | $2.6M | 73,101 | 0.28% | 6q | -53.4%-$3.0M |
| Numerai GP LLC | $2.5M | 70,114 | 0.21% | 2q | +87.7%+$1.2M |
| UBS Group AG | $2.4M | 65,424 | 0.00% | 12q | -61.3%-$3.7M |
| Squarepoint Ops LLC | $2.2M | 59,562 | 0.00% | new | NEW |
| BOOTHBAY FUND MANAGEMENT, LLC | $2.1M | 57,516 | 0.03% | 2q | +3.4%+$69.2K |
| BARCLAYS PLC | $2.0M | 56,181 | 0.00% | 7q | +13.8%+$246.4K |
| HighTower Advisors, LLC | $1.9M | 52,907 | 0.00% | 2q | +187.2%+$1.2M |
| RENAISSANCE TECHNOLOGIES LLC | $1.9M | 52,300 | 0.00% | 14q | -68.0%-$4.0M |
| POLEN CAPITAL MANAGEMENT LLC | $1.6M | 45,379 | 0.01% | 2q | +50.6%+$551.7K |
| Point72 Asset Management, L.P. | $1.6M | 44,918 | 0.00% | new | NEW |
| Aquatic Capital Management LLC | $1.6M | 43,794 | 0.05% | 5q | +263.1%+$1.1M |
| DIMENSIONAL FUND ADVISORS LP | $1.5M | 42,484 | 0.00% | new | NEW |
| HSBC HOLDINGS PLC | $1.5M | 40,974 | 0.00% | new | NEW |
| SEI INVESTMENTS CO | $1.3M | 34,698 | 0.00% | 2q | -40.2%-$844.8K |
| Jefferies Financial Group Inc. | $1.2M | 34,027 | 0.01% | new | NEW |
| RHUMBLINE ADVISERS | $1.2M | 33,703 | 0.00% | 5q | +9.7%+$107.8K |
| Y-Intercept (Hong Kong) Ltd | $1.2M | 33,542 | 0.02% | new | NEW |
| Invesco Ltd. | $1.2M | 33,384 | 0.00% | 5q | +45.9%+$380.5K |
| NEW YORK STATE COMMON RETIREMENT FUND | $1.2M | 32,779 | 0.00% | 5q | +304.7%+$893.4K |
| BLAIR WILLIAM & CO/IL | $1.2M | 32,419 | 0.00% | 21q | HELD |
| Riggs Asset Managment Co. Inc. | $1.2M | 32,046 | 0.21% | new | NEW |
| Sigma Planning Corp | $1.1M | 30,000 | 0.03% | new | NEW |
| SIMPLEX TRADING, LLC | $1.1M CALL+PUT | options only | 0.00% | 4q | OPTIONS |
| AMERICAN CENTURY COMPANIES INC | $1.1M | 29,125 | 0.00% | 2q | +144.2%+$622.6K |
| JUNCTURE WEALTH STRATEGIES, LLC | $1.0M | 28,849 | 0.27% | 4q | +50.4%+$350.0K |
| DEUTSCHE BANK AG\ | $960.1K | 26,522 | 0.00% | 5q | +25.5%+$195.0K |
| STRS OHIO | $854.3K | 23,600 | 0.00% | new | NEW |
| Guilbault Capital LLC | $849.3K | 23,460 | 0.85% | 3q | +1.0%+$8.5K |
| PRICE T ROWE ASSOCIATES INC /MD/ | $794.0K | 21,932 | 0.00% | 5q | +24.2%+$154.9K |
| PRUDENTIAL FINANCIAL INC | $765.0K | 21,133 | 0.00% | new | NEW |
| CITIGROUP INC | $758.5K | 20,952 | 0.00% | 8q | +722.3%+$666.2K |
| ESSEX INVESTMENT MANAGEMENT CO LLC | $728.7K | 20,131 | 0.10% | 13q | HELD |
| STATE OF WISCONSIN INVESTMENT BOARD | $707.5K | 19,544 | 0.00% | 3q | +4.8%+$32.6K |
| FIRST TRUST ADVISORS LP | $705.1K | 19,477 | 0.00% | new | NEW |
| ALLIANCEBERNSTEIN L.P. | $697.2K | 28,250 | 0.00% | new | NEW |
| NAVELLIER & ASSOCIATES INC | $652.0K | 18,010 | 0.05% | new | NEW |
| BANK OF NOVA SCOTIA | $622.6K | 17,200 | 0.00% | 2q | +14.7%+$79.6K |
| CHICAGO TRUST Co NA | $604.5K | 16,700 | 0.09% | 20q | HELD |
| Man Group plc | $584.7K | 16,152 | 0.00% | new | NEW |
| Gotham Asset Management, LLC | $578.5K | 15,982 | 0.00% | new | NEW |
| LOS ANGELES CAPITAL MANAGEMENT LLC | $567.4K | 15,675 | 0.00% | 3q | +52.6%+$195.7K |
| MetLife Investment Management, LLC | $567.4K | 15,673 | 0.00% | 5q | +0.9%+$4.9K |
| ACADIAN ASSET MANAGEMENT LLC | $541.0K | 15,013 | 0.00% | new | NEW |
| PDT Partners, LLC | $539.1K | 14,891 | 0.03% | 6q | HELD |
| Vanguard Global Advisers, LLC | $512.8K | 14,165 | 0.00% | 2q | +57.5%+$187.3K |
| LPL Financial LLC | $507.4K | 14,017 | 0.00% | new | NEW |
| Connor, Clark & Lunn Investment Management Ltd. | $476.0K | 13,150 | 0.00% | 12q | -69.2%-$1.1M |
| RAYMOND JAMES FINANCIAL INC | $450.5K | 12,444 | 0.00% | 7q | +1.6%+$7.0K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $445.1K | 12,296 | 0.00% | 5q | +2.1%+$9.3K |
| IMC-Chicago, LLC | $423.5K CALL | options only | 0.00% | 2q | OPTIONS |
| Legato Capital Management LLC | $417.1K | 11,521 | 0.03% | new | NEW |
| Quantum Private Wealth, LLC | $416.3K | 11,500 | 0.11% | 17q | HELD |
| Menard Financial Group LLC | $385.2K | 10,642 | 0.21% | new | NEW |
| &PARTNERS | $362.0K | 10,000 | 0.00% | new | NEW |
| MACKENZIE FINANCIAL CORP | $347.2K | 9,590 | 0.00% | new | NEW |
| ENVESTNET ASSET MANAGEMENT INC | $346.9K | 9,582 | 0.00% | 7q | -10.8%-$41.9K |
Showing the largest 100 of 166 reported holders.
What the company announced
Form 8-K filings from the last 120 days, showing only the items worth a reader's attention. Earnings releases, exhibit attachments and general disclosures are filed constantly and are left out. Filed is when the SEC received it; event is the date the company says the thing happened.
| Filed | Event date | What | Source |
|---|---|---|---|
| 2026-10-14 | 2026-10-14 | Acquisition or disposal completed Material agreement entered | filing |
| 2026-08-05 | 2026-07-31 | Acquisition or disposal completed Material agreement entered | filing |
| 2026-08-04 | 2026-07-31 | Directors or officers departed or appointed | filing |
What the insiders did
Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.
Officers and directors
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-20 | BRYNJELSEN SEAN | President & CEO | Sold | 91,022 | $5.5M ×3 |
| 2026-05-28 | BRYNJELSEN SEAN | President & CEO | Sold | 120,000 | $3.8M ×2 |
| 2026-08-28 | MAIER PAUL V | Director | Sold | 50,000 | $3.0M ×3 |
| 2026-08-28 | MAIER PAUL V | Director | Sold | 50,000 | $3.0M ×3 |
| 2026-08-24 | Krempa David | Chief Business Officer | Sold | 25,000 | $1.6M |
| 2026-06-17 | Adams Jennifer McKie | Director | Sold | 50,000 | $1.6M |
| 2026-05-22 | Krempa David | Chief Business Officer | Sold | 42,797 | $1.4M ×3 |
| 2026-05-26 | Krempa David | Chief Business Officer | Sold | 37,524 | $1.2M |
| 2026-05-27 | Krempa David | Chief Business Officer | Sold | 19,679 | $619.4K |
| 2026-08-19 | BRYNJELSEN SEAN | President & CEO | Sold | 8,978 | $562.5K |
| 2026-10-06 | Krempa David | Chief Business Officer | Sold | 4,166 | $229.4K |
Ten percent owners and entities
Usually an institution that crossed a reporting threshold, or a company taking a strategic stake, rather than an individual with a view.
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-07-02 | Opaleye Management Inc. | 10% owner | Sold | 90,000 | $3.4M ×2 |
| 2026-07-14 | Opaleye Management Inc. | 10% owner | Sold | 28,315 | $1.1M ×2 |
| 2026-07-14 | Opaleye Management Inc. | 10% owner | Sold | 28,315 | $1.1M ×2 |
| 2026-07-07 | Opaleye Management Inc. | 10% owner | Sold | 26,685 | $1.0M ×2 |
| 2026-07-06 | Opaleye Management Inc. | 10% owner | Sold | 10,000 | $380.0K |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 48 | $26.7M | 517,222 | 20 | 14 | 9 | 0.0% |
| Q2 2026 | 166 | $775.5M | 21,181,529 | 54 | 58 | 33 | 1.2% |
| Q1 2026 | 119 | $446.1M | 17,784,221 | 27 | 34 | 32 | 1.7% |
| Q4 2025 | 105 | $279.3M | 16,406,993 | 19 | 27 | 34 | 0.7% |
| Q3 2025 | 105 | $408.4M | 18,542,112 | 28 | 25 | 27 | 0.7% |
| Q2 2025 | 90 | $248.1M | 17,077,986 | 27 | 34 | 19 | 1.9% |
| Q1 2025 | 86 | $191.1M | 14,615,226 | 26 | 28 | 21 | 0.7% |
| Q4 2024 | 73 | $185.5M | 13,627,508 | 24 | 27 | 10 | 2.2% |
| Q3 2024 | 50 | $61.7M | 10,000,749 | 12 | 10 | 10 | 2.7% |
| Q2 2024 | 47 | $32.6M | 9,861,153 | 7 | 6 | 15 | 0.5% |
| Q1 2024 | 46 | $29.1M | 7,694,031 | 3 | 13 | 12 | 0.9% |
| Q4 2023 | 58 | $33.7M | 7,650,561 | 11 | 19 | 8 | 0.7% |
| Q3 2023 | 54 | $29.1M | 6,899,800 | 22 | 10 | 6 | 1.2% |
| Q2 2023 | 35 | $21.1M | 5,976,427 | 4 | 9 | 3 | 1.2% |
| Q1 2023 | 37 | $22.6M | 5,838,851 | 9 | 7 | 7 | 0.7% |
| Q4 2022 | 34 | $18.4M | 5,937,571 | 6 | 3 | 7 | 1.6% |
| Q3 2022 | 30 | $14.7M | 6,344,542 | 2 | 7 | 7 | 2.0% |
| Q2 2022 | 29 | $18.5M | 5,917,041 | 3 | 5 | 10 | 4.6% |
| Q1 2022 | 31 | $29.1M | 5,783,556 | 6 | 7 | 10 | 6.0% |
| Q4 2021 | 30 | $28.0M | 5,748,309 | 6 | 7 | 9 | 3.0% |
| Q3 2021 | 35 | $33.5M | 5,962,214 | 8 | 10 | 7 | 2.9% |
| Q2 2021 | 46 | $53.0M | 6,840,166 | 18 | 6 | 16 | 2.2% |
| Q1 2021 | 49 | $68.1M | 8,783,167 | 8 | 12 | 18 | 0.2% |
| Q4 2020 | 44 | $75.0M | 8,721,626 | 9 | 26 | 5 | 0.0% |
| Q3 2020 | 37 | $59.5M | 7,032,358 | 5 | 9 | 17 | 0.0% |
| Q2 2020 | 40 | $39.8M | 6,803,385 | 25 | 9 | 5 | 0.0% |
| Q1 2020 | 17 | $24.5M | 5,970,004 | 5 | 6 | 4 | 0.0% |
| Q4 2019 | 13 | $18.9M | 2,623,150 | 3 | 6 | 1 | 0.0% |
| Q3 2019 | 14 | $14.4M | 2,277,636 | 5 | 7 | 1 | 0.0% |
| Q2 2019 | 10 | $14.0M | 1,767,833 | 1 | 6 | 1 | 0.0% |
| Q1 2019 | 12 | $12.0M | 1,501,083 | 3 | 5 | 1 | 0.0% |
| Q4 2018 | 12 | $7.0M | 1,152,124 | 2 | 0 | 0 | 0.0% |