Ceco Environmental Corp.
A maker of engineered systems that clean industrial air and water, CECO Environmental builds pollution-control and fluid-handling equipment used by power plants, oil and gas refineries, and semiconductor and battery factories. Founded in 1966 as the Claremont Engineering Company, it took its name from those initials—CECO—and has grown through acquisitions. In 2026 it signed a deal to merge with Thermon Group Holdings, a maker of industrial heating products.
Granted 34.5K · Sold 168.0K
Granted 862.1K · Bought 1.8K · Sold 325.5K
Granted 55.4K · Bought 253.5K
Granted 24.1K · Bought 1.9K
Granted 11.9K · Bought 18.0K
Granted 42.8K
Granted 27.4K · Sold 20.0K
Granted 39.7K · Bought 2.3K · Sold 12.1K
Granted 83.1K
Granted 34.5K · Sold 11.2K
Granted 24.9K · Sold 11.9K
Granted 7.1K
Granted 120.9K · Sold 58.1K
Granted 38.9K
Granted 11.6K
Granted 19.6K · Bought 2.5K
Granted 22.0K
Granted 10.7K
Granted 13.1K
Granted 6.4K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Dezwirek JasonDirector · 12 transactions | — | 8.15M | 34.5K | — | 168.0K |
| Gleason Todd RChief Executive Officer, Director · 39 transactions | — | 863.7K | 862.1K | 1.8K | 325.5K |
| Wallman Richard FDirector · 36 transactions | — | 639.3K | 55.4K | 253.5K | — |
| Eckl MatthewChief Financial Officer · 2 transactions | +17% | 190.5Kas of Mar 2022 | 24.1K | 1.9K | — |
| Liner David BDirector · 4 transactions | +34% | 118.1Kas of Mar 2023 | 11.9K | 18.0K | — |
| Sachs Valerie GentileDirector · 7 transactions | +68.5% | 105.3K | 42.8K | — | — |
| Mannarino Claudio ADirector · 8 transactions | +10.3% | 78.7K | 27.4K | — | 20.0K |
| Nuggihalli RameshChief Operating Officer · 8 transactions | +67.6% | 73.9Kas of Mar 2023 | 39.7K | 2.3K | 12.1K |
| Watkins-Asiyanbi JoycelynnSee Remarks. · 14 transactions | — | 73.2Kas of Jun 2025 | 83.1K | — | — |
| Nanda MunishDirector · 6 transactions | +56.7% | 64.2K | 34.5K | — | 11.2K |
| Gohr Paul MChief Accounting Officer · 5 transactions | +31.5% | 54.6Kas of Mar 2023 | 24.9K | — | 11.9K |
| Henry ChasitySee Remarks · 1 transaction | +17.1% | 48.9Kas of Nov 2021 | 7.1K | — | — |
| Johansson Peter K.SVP, Chief Financial Officer · 20 transactions | — | 40.7K | 120.9K | — | 58.1K |
| George Marcus JDirector · 2 transactions | — | 36.7K | 38.9K | — | — |
| Gregory Alyson NoelGeneral Counsel · 6 transactions | — | 23.0K | 11.6K | — | — |
| Siegel LaurieDirector · 5 transactions | — | 22.1K | 19.6K | 2.5K | — |
| Harris-Peterson CandaceChief Human Resources Officer · 7 transactions | — | 22.0K | 22.0K | — | — |
| Kovachev KirilChief Accounting Officer · 8 transactions | — | 16.3K | 10.7K | — | — |
| Knowling Robert E JrDirector · 2 transactions | — | 13.1K | 13.1K | — | — |
| Richey Victor L JrDirector · 1 transaction | — | 6.4K | 6.4K | — | — |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over the last 5 years: -326.9K shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.