As of November 7, 2026, Eton Pharmaceuticals, Inc. is a publicly traded company (Nasdaq: ETON); its largest reported holder is Opaleye Management Inc., with 8.54% on Schedule 13G/A of November 6, 2026, then BlackRock (6.9%) (Schedule 13G/A, November 6, 2026).
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Is Eton Pharmaceuticals, Inc. a real, registered company?
- Eton Pharmaceuticals, Inc. files with the SEC under CIK 1710340 (its SEC filings).
- Its shares are listed under the ticker ETON on Nasdaq (SEC company record).
- Incorporated in Delaware; business address in Deer Park, Illinois, as its SEC filings state.
- Court and bankruptcy records: see Before you sign or pay below.
Before you sign or pay
- Court and bankruptcy: No federal court case or bankruptcy filing found under ETON PHARMACEUTICALS, INC. in our court records and SEC 8-K records (as of 2026-11-07).
- Leadership changes: the latest reported is Danka Radosavljevic, Chief Operating Officer (Form 8-K filed 2026-08-04). Check you are dealing with the people now in charge.
- Ownership: 5%+ holders are reported on Schedule 13D or 13G; the latest names Opaleye Management Inc. (filed 2026-11-06).
Who are Eton Pharmaceuticals, Inc.'s owners and officers?
Eton Pharmaceuticals, Inc.: incorporated in Delaware; business address in Deer Park, Illinois; industry Pharmaceutical Preparations (Schedule 13G/A, 2026-11-06).
| Report | Holder | Share |
|---|---|---|
| Schedule 13G/A, 2026-11-06 | Opaleye Management Inc. | 8.54% |
| Schedule 13G/A, 2026-07-28 | Blackrock, Inc. | 6.9% |
| Schedule 13G/A, 2026-03-26 | The Vanguard Group | 0% |
| Schedule 13G, 2025-10-30 | The Vanguard Group | 5.01% |
| Schedule 13G, 2025-07-17 | Blackrock, Inc. | 5.7% |
Questions about who owns Eton Pharmaceuticals, Inc.
Who owns Eton Pharmaceuticals, Inc.?
On this page, 2 holders' latest ownership filings report 5% or more of Eton Pharmaceuticals, Inc.: Opaleye Management Inc. (8.54%, Schedule 13G/A, filed 2026-11-06) and Blackrock, Inc. (6.9%, Schedule 13G/A, filed 2026-07-28).
Who are the largest shareholders of Eton Pharmaceuticals, Inc.?
By the share each holder's latest filing reports, the largest holders of Eton Pharmaceuticals, Inc. on this page are Opaleye Management Inc. (8.54%) and Blackrock, Inc. (6.9%).
When did Opaleye Management Inc. buy into Eton Pharmaceuticals, Inc.?
The filings give report dates, not purchase dates. The earliest filing from Opaleye Management Inc. on this page is the Schedule 13G/A, filed 2026-11-06, reporting 8.54%. That earliest filing is itself an amendment, which updates an earlier report.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 5 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
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| Filed | Person | Role | Change | Effective |
|---|---|---|---|---|
| Form 8-K, 2026-08-04 | Danka Radosavljevic | Chief Operating Officer | appointed |
Which insiders own Eton Pharmaceuticals, Inc. shares?
Directors, officers and holders of 10% or more report their shares on Forms 3, 4 and 5. Each line is the latest such report, largest holding first.
- Opaleye Management Inc., a 10% owner: 2,705,000 shares (9.4% of shares outstanding), held indirectly through By Opaleye, L.P. (Form 4/A, 2026-07-17).
- , the chief executive and president: 961,194 shares (3.3% of shares outstanding) (Form 4, 2026-08-20).
- , a director: 224,300 shares (0.78% of shares outstanding), 67,155 held directly and 157,145 indirectly (Form 4, 2026-04-22).
- , the chief financial officer: 213,420 shares (0.74% of shares outstanding) (Form 4, 2026-01-14).
- , a director: 72,245 shares (0.25% of shares outstanding) (Form 4/A, 2026-08-31).
Shares outstanding: 28,842,215 as of 2026-11-02, from the company's latest SEC cover page.
How much has Eton Pharmaceuticals, Inc. raised?
Acquisitions reported on Form 8-K, Item 2.01: completed an acquisition (2026-10-14); completed an acquisition (2026-08-05); completed an acquisition (2026-05-19); completed an acquisition (2026-03-02); acquired Increlex (2025-11-18).
Keep reading
More on Eton Pharmaceuticals, Inc. and the records around it.
Eton Pharmaceuticals, Inc. elsewhere on the record
- Leadership changes Aug 2026
- Acquisition Nov 2025
Companies that share a holder
- Opaleye Management Inc. also filed stake reports on 12 other companies: Codexis, Inc. (Nov 2026), Gossamer Bio, Inc. (Nov 2026), Pasithea Therapeutics Corp. (Nov 2026)
- BlackRock, Inc. also filed stake reports on 1596 other companies: AvePoint, Inc. (Nov 2026), BIOMARIN PHARMACEUTICAL INC (Nov 2026), MSG RANGERS CORP (Nov 2026)
- The Vanguard Group also filed stake reports on 2384 other companies: BellRing Brands, Inc. (Sep 2026), CAL-MAINE FOODS INC (Sep 2026), FTAI Aviation Ltd. (Sep 2026)
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