Ceco Environmental Corp
CECO- Exchange
- Nasdaq
- Industry
- Industrial & Commercial Fans & Blowers & Air Purifing Equip
- SEC CIK
- 0000003197
No open-market purchases or sales by Ceco Environmental Corp insiders were filed in the last 90 days; 343 institutions reported holding it in 13F filings for Q2 2026, worth $4.68B in total; no superinvestor holds it.
Holders of 5% or more of CECO
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Ceco Environmental Corp, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Dezwirek Jason | 13D/A | 11.70%4.20M shares | – | Feb 26, 20261 filing | Feb 26, 2026 | SEC |
| BlackRock, Inc. | 13G/A | 6.30%2.22M shares | – | Jul 16, 20251 filing | Jul 16, 2025 | SEC |
| FMR LLC | 13G/A | 6.20%2.17M shares | +1.10 ppfrom 5.10% | Feb 12, 20252 filings | Aug 6, 2025 | SEC |
| American Century Investment Management Inc | 13G | 5.70%2.04M shares | New | Feb 13, 20261 filing | Feb 13, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
11 Schedule 13D and 13G filings on Ceco Environmental Corp, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Feb 26, 20266:26 PM ET | Dezwirek Jasonand 2 others | 13D/A | 11.70%4.20M shares | – | Feb 23, 2026 | SEC |
| Feb 13, 202610:17 AM ET | American Century Investment Management Incand 2 others | 13G | 5.70%2.04M shares | New | Dec 31, 2025 | SEC |
| Jan 30, 20261:29 PM ET | Vanguard Group Inc | 13G/A | 4.99%1.78M shares | −0.02 ppfrom 5.01%Below 5% | Dec 31, 2025 | SEC |
| Nov 14, 20258:00 AM ET | Hood River Capital Management LLC | 13G/A | 1.39%492.4K shares | −4.12 ppfrom 5.51%Below 5% | Sep 30, 2025 | SEC |
| Nov 13, 202511:04 AM ET | Capital International Investors | 13G/A | 4.70%1.68M shares | –Below 5% | Sep 30, 2025 | SEC |
| Oct 30, 20252:57 PM ET | Vanguard Group Inc | 13G | 5.01%1.77M shares | New | Sep 30, 2025 | SEC |
| Aug 6, 202511:56 AM ET | FMR LLCand 1 other | 13G/A | 6.20%2.17M shares | +1.10 ppfrom 5.10% | Jun 30, 2025 | SEC |
| Jul 16, 20257:02 PM ET | BlackRock, Inc. | 13G/A | 6.30%2.22M shares | – | Jun 30, 2025 | SEC |
| May 15, 20258:00 AM ET | Hood River Capital Management LLC | 13G | 5.51%1.93M shares | New | Mar 31, 2025 | SEC |
| Apr 15, 202512:17 PM ET | Dimensional Fund Advisors LP | 13G/A | 3.60%1.25M shares | –Below 5% | Mar 31, 2025 | SEC |
| Feb 12, 20259:08 AM ET | FMR LLCand 1 other | 13G | 5.10%1.80M shares | New | Dec 31, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Ceco Environmental Corp shares.
No Form 144 notices for Ceco Environmental Corp are on file.