As of October 25, 2026, Ceco Environmental Corp. is a publicly traded company (Nasdaq: CECO). The largest holder reporting an active stake on Schedule 13D is Jason Dezwirek, a director, at 11.7%. No bankruptcy or receivership appears in its SEC Form 8-K filings. Passive holders reporting on Schedule 13G include Fidelity (FMR) (7.7%), BlackRock (6.3%) (Schedule 13D/A, February 26, 2026).
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Is Ceco Environmental Corp. a real, registered company?
- Ceco Environmental Corp files with the SEC under CIK 3197 (its SEC filings).
- Its shares are listed under the ticker CECO on Nasdaq (SEC company record).
- Incorporated in Delaware; business address in Addison, Texas, 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 CECO ENVIRONMENTAL CORP in our court records and SEC 8-K records (as of 2026-10-25).
- Leadership changes: the latest reported is Marcus J. George, Chairman of the Board (Form 8-K filed 2026-06-01). 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 2026-08-06).
Who is behind Ceco Environmental Corp.?
Ceco Environmental Corp.: incorporated in Delaware; business address in Addison, Texas; industry Industrial & Commercial Fans & Blowers & Air Purifing Equip (Schedule 13G/A, 2026-08-14).
| Report | Holder | Share |
|---|---|---|
| Schedule 13G/A, 2026-08-14 | T. Rowe Price Investment Management, Inc. | 3.7% |
| Schedule 13G/A, 2026-08-14 | American Century Investment Management, Inc. | 3.6% |
| Schedule 13G/A, 2026-08-06 | Fmr LLC | 7.7% |
| Schedule 13G, 2026-05-15 | T. Rowe Price Investment Management, Inc. | 6% |
| Schedule 13D/A, 2026-02-26 | Jason Dezwirek | 11.7% |
| Schedule 13G, 2026-02-13 | American Century Investment Management, Inc. | 5.7% |
| Schedule 13G/A, 2026-01-30 | The Vanguard Group | 4.99% |
| Schedule 13G/A, 2025-11-14 | Hood River Capital Management LLC | 1.39% |
| Schedule 13G/A, 2025-11-13 | Capital International Investors | 4.7% |
| Schedule 13G, 2025-10-30 | The Vanguard Group | 5.01% |
| Schedule 13G/A, 2025-08-06 | Fmr LLC | 6.2% |
| Schedule 13G/A, 2025-07-16 | Blackrock, Inc. | 6.3% |
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Questions about who owns Ceco Environmental Corp.
Who owns Ceco Environmental Corp.?
On this page, 3 holders' latest ownership filings report 5% or more of Ceco Environmental Corp.: Jason Dezwirek (11.7%, Schedule 13D/A, filed 2026-02-26), Fmr LLC (7.7%, Schedule 13G/A, filed 2026-08-06) and Blackrock, Inc. (6.3%, Schedule 13G/A, filed 2025-07-16).
Who are the largest shareholders of Ceco Environmental Corp.?
By the share each holder's latest filing reports, the largest holders of Ceco Environmental Corp. on this page are Jason Dezwirek (11.7%), Fmr LLC (7.7%) and Blackrock, Inc. (6.3%).
When did Jason Dezwirek buy into Ceco Environmental Corp.?
The filings give report dates, not purchase dates. The earliest filing from Jason Dezwirek on this page is the Schedule 13D/A, filed 2026-02-26, reporting 11.7%. 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%); 12 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.
| Filed | Person | Role | Change | Effective |
|---|---|---|---|---|
| Form 8-K, 2026-06-01 | Marcus J. George | Chairman of the Board | appointed | |
| Form 8-K, 2026-06-01 | Todd Gleason | Chairman of the Board | appointed |
Which insiders own Ceco Environmental Corp. 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: 4,138,626 shares (7.1% of shares outstanding), 1,236,080 held directly and 2,902,546 indirectly (Form 4, 2026-06-26).
- , the chief executive and a director: 452,464 shares (0.77% of shares outstanding), 450,688 held directly and 1,776 indirectly (Form 4, 2026-04-02).
- , a director: 338,852 shares (0.58% of shares outstanding), 233,352 held directly and 105,500 indirectly (Form 4, 2026-06-03).
- , a director: 105,334 shares (0.18% of shares outstanding) (Form 4, 2026-06-03).
- , a director: 78,697 shares (0.13% of shares outstanding) (Form 4, 2026-06-03).
Shares outstanding: 58,569,830 as of 2026-08-03, from the company's latest SEC cover page.
How much has Ceco Environmental Corp. raised?
Acquisitions reported on Form 8-K, Item 2.01: acquired Thermon (2026-06-01).
Keep reading
More on Ceco Environmental Corp. and the records around it.
Ceco Environmental Corp. elsewhere on the record
- 5%+ stake filings Nov 2026
- Acquisition Jun 2026
- Leadership changes Jun 2026
Companies that share a holder
- Hood River Capital Management LLC also filed stake reports on 19 other companies: Butterfly Network Inc. (Aug 2026), Camping World Holdings, Inc. (Aug 2026), Kura Sushi USA Inc. (Aug 2026)
- American Century Investment Management, Inc. also filed stake reports on 83 other companies: Visteon Corporation (Oct 2026), MarineMax, Inc. (Sep 2026), AdvanSix Inc. (Aug 2026)
- Capital International Investors also filed stake reports on 96 other companies: Aurora Innovation, Inc. (Nov 2026), Arxis, Inc. (Aug 2026), Astronics Corp. (Aug 2026)
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