As of November 6, 2026, Ecovyst Inc. is a publicly traded company (NYSE: ECVT); its largest reported holder is Rubric Capital Management LP, with 9.09% on Schedule 13G of November 14, 2025, then Fidelity (FMR) (7.7%). The largest insider holding is Kurt Bitting, a director, with 698,382 shares (0.64% of shares outstanding), per Form 4 of March 16, 2026 (Schedule 13G, November 14, 2025).
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Is Ecovyst Inc. a real, registered company?
- Ecovyst Inc. files with the SEC under CIK 1708035 (its SEC filings).
- Its shares are listed under the ticker ECVT on NYSE (SEC company record).
- Incorporated in Delaware; business address in Wayne, Pennsylvania, 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 ECOVYST INC in our court records and SEC 8-K records (as of 2026-11-06).
- Leadership changes: the latest reported is Laurie Bergman, Chief Financial Officer (Form 8-K filed 2026-08-24). Check you are dealing with the people now in charge.
- Ownership: 5%+ holders are reported on Schedule 13D or 13G; the latest names Fidelity (FMR) (filed 2026-11-05).
Who are Ecovyst Inc.'s owners and officers?
Ecovyst Inc.: incorporated in Delaware; business address in Wayne, Pennsylvania; industry Chemicals & Allied Products (Schedule 13G, 2026-11-05).
| Report | Holder | Share |
|---|---|---|
| Schedule 13G, 2026-11-05 | Fmr LLC | 7.7% |
| Schedule 13G, 2026-07-31 | Vanguard Portfolio Management | 5.65% |
| Schedule 13G/A, 2026-07-14 | Dimensional Fund Advisors LP | 6% |
| Schedule 13G/A, 2026-05-08 | Hotchkis And Wiley Capital Management, LLC | 4.9% |
| Schedule 13G, 2026-04-29 | Vanguard Capital Management | 5.25% |
| Schedule 13G/A, 2026-04-24 | Blackrock, Inc. | 7.7% |
| Schedule 13G/A, 2026-03-26 | The Vanguard Group | 0% |
| Schedule 13G/A, 2025-11-14 | Hotchkis And Wiley Capital Management, LLC | 7.74% |
| Schedule 13G, 2025-11-14 | Rubric Capital Management LP | 9.09% |
| Schedule 13G/A, 2025-08-13 | Hotchkis And Wiley Capital Management, LLC | 9.56% |
| Schedule 13D/A, 2025-07-02 | Ineos Limited | 0% |
Questions about who owns Ecovyst Inc.
Who owns Ecovyst Inc.?
On this page, 6 holders' latest ownership filings report 5% or more of Ecovyst Inc.: Rubric Capital Management LP (9.09%, Schedule 13G, filed 2025-11-14), Fmr LLC (7.7%, Schedule 13G, filed 2026-11-05), Blackrock, Inc. (7.7%, Schedule 13G/A, filed 2026-04-24), Dimensional Fund Advisors LP (6%, Schedule 13G/A, filed 2026-07-14) and Vanguard Portfolio Management (5.65%, Schedule 13G, filed 2026-07-31); 1 more is listed above.
Who are the largest shareholders of Ecovyst Inc.?
By the share each holder's latest filing reports, the largest holders of Ecovyst Inc. on this page are Rubric Capital Management LP (9.09%), Fmr LLC (7.7%) and Blackrock, Inc. (7.7%).
When did Rubric Capital Management LP buy into Ecovyst Inc.?
The filings give report dates, not purchase dates. The earliest filing from Rubric Capital Management LP on this page is the Schedule 13G, filed 2025-11-14, reporting 9.09%.
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%); 11 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 Ecovyst Inc. 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, 2026-08-24 | Laurie Bergman | Chief Financial Officer | appointed |
Which insiders own Ecovyst 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.
- , a director: 698,382 shares (0.64% of shares outstanding) (Form 4, 2026-03-16).
- Joseph S. Koscinski: 595,784 shares (0.55% of shares outstanding) (Form 4, 2026-03-06).
- Michael Feehan: 389,071 shares (0.36% of shares outstanding) (Form 4, 2026-03-06).
- , a director: 255,998 shares (0.24% of shares outstanding), 215,998 held directly and 40,000 indirectly (Form 4, 2026-02-05).
- , a director: 127,999 shares (0.12% of shares outstanding), 107,999 held directly and 20,000 indirectly (Form 4, 2026-02-05).
Shares outstanding: 108,615,380 as of 2026-10-30, from the company's latest SEC cover page.
How much has Ecovyst Inc. raised?
Acquisitions reported on Form 8-K, Item 2.01: completed an acquisition (2026-01-07).
Keep reading
More on Ecovyst Inc. and the records around it.
Ecovyst Inc. elsewhere on the record
- 5%+ stake filings Nov 2026
- Leadership changes Aug 2026
Companies that share a holder
- Hotchkis and Wiley Capital Management, LLC also filed stake reports on 13 other companies: Global Indemnity Group, LLC (Aug 2026), National CineMedia, Inc. (Aug 2026), Stagwell Inc (Nov 2025)
- Rubric Capital Management LP also filed stake reports on 32 other companies: ARDELYX, INC. (Aug 2026), Enovis Corporation (Aug 2026), MeiraGTx Holdings plc (Aug 2026)
- Dimensional Fund Advisors LP also filed stake reports on 366 other companies: Acadia Healthcare Co Inc (Oct 2026), ADT Inc (Oct 2026), AGCO Corp (Oct 2026)
Related pages
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