As of November 6, 2026, American Shared Hospital Services is a publicly traded company (NYSE: AMS). The largest holder reporting an active stake on Schedule 13D is Raymond C. Stachowiak, the chairman and a director, at 35.3%. No bankruptcy or receivership appears in its SEC Form 8-K filings (Schedule 13D/A, July 30, 2026).
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Is American Shared Hospital Services a real, registered company?
- American Shared Hospital Services files with the SEC under CIK 744825 (its SEC filings).
- Its shares are listed under the ticker AMS on NYSE (SEC company record).
- Incorporated in California; business address in San Francisco, California, 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 AMERICAN SHARED HOSPITAL SERVICES in our court records and SEC 8-K records (as of 2026-11-06).
- Leadership changes: the latest reported is Alexis N. Tirrito, Chief Accounting Officer (Form 8-K filed 2026-07-13). Check you are dealing with the people now in charge.
- Ownership: 5%+ holders are reported on Schedule 13D or 13G; the latest names Stachowiak Raymond C (filed 2026-07-30).
Who are American Shared Hospital Services' owners and officers?
American Shared Hospital Services: incorporated in California; business address in San Francisco, California; industry Services-Medical Laboratories (Schedule 13D/A, 2026-07-30).
| Report | Holder | Share |
|---|---|---|
| Schedule 13D/A, 2026-07-30 | Stachowiak Raymond C | 35.3% |
| Schedule 13D/A, 2026-06-25 | Stachowiak Raymond C | 33% |
| Schedule 13D/A, 2026-06-23 | Anita G. Zucker | 0% |
| Schedule 13D/A, 2025-12-16 | Ruffle John F | 0% |
| Schedule 13D/A, 2025-12-09 | Stachowiak Raymond C | 23.7% |
Questions about who owns American Shared Hospital Services
Who owns American Shared Hospital Services?
On this page, one holder's latest ownership filing reports 5% or more of American Shared Hospital Services: Stachowiak Raymond C (35.3%, Schedule 13D/A, filed 2026-07-30).
When did Stachowiak Raymond C buy into American Shared Hospital Services?
The filings give report dates, not purchase dates. The earliest filing from Stachowiak Raymond C on this page is the Schedule 13D/A, filed 2025-12-09, reporting 23.7%; its latest, Schedule 13D/A filed 2026-07-30, reports 35.3%. 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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What the Full Report on American Shared Hospital Services covers
The Short Answer
Which Company This Is
What They Do, And How The Money Works
Who Runs It, And How To Reach Them
The Money: Funding, Valuation, Runway
Who Pays Them, And Who They Are Up Against
Warning Bells
Sources
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| Filed | Person | Role | Change | Effective |
|---|---|---|---|---|
| Form 8-K, 2026-07-13 | Alexis N. Tirrito | Chief Accounting Officer | appointed | |
| Form 8-K, 2026-04-24 | Craig K. Tagawa | President | appointed | 2026-04-27 |
Which insiders own American Shared Hospital Services 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.
- , the chairman and a director: 2,280,205 shares (34.3% of shares outstanding), 180,678 held directly and 2,099,527 indirectly (Form 4, 2026-06-24).
- , the chief operating officer: 120,000 shares (1.8% of shares outstanding) (Form 4, 2024-10-31).
- , the chief financial officer: 50,000 shares (0.75% of shares outstanding) (Form 4, 2024-12-23).
- , the president: 35,501 shares (0.53% of shares outstanding) (Form 4, 2025-05-02).
- , the chief financial officer and chief accounting officer: 9,634 shares (0.14% of shares outstanding) (Form 3, 2026-07-16).
Shares outstanding: 6,650,000 as of 2026-08-11, from the company's latest SEC cover page.
How much has American Shared Hospital Services raised?
No fundraising or offering filing from American Shared Hospital Services is on file with us.
Keep reading
More on American Shared Hospital Services and the records around it.
American Shared Hospital Services elsewhere on the record
- 5%+ stake filings Jul 2026
- Leadership changes Jul 2026
Companies that share a holder
- Anita G. Zucker also filed stake reports on 2 other companies: UNION BANKSHARES INC (May 2026)
Related pages
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