Ceco Environmental's three largest insider shareholders as of September 29, 2026 are Jason Dezwirek (Secretary, 1.24Mn shares), Todd R Gleason (Chief Executive Officer, 450.69K shares), Richard F Wallman (Director, 338.85K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Todd R Gleason | Chief Executive Officer | 450,688 | 0 | 450,688 | 23.5% | 02 Apr, 2026 |
| 2 | Richard F Wallman | Director | 233,352 | 105,500 | 338,852 | 17.7% | 03 Jun, 2026 |
| 3 | Matthew Eckl | Chief Financial Officer | 190,454 | 0 | 190,454 | 9.9% | 17 Mar, 2022 |
| 4 | Jason Dezwirek | Director | 0 | 132,000 | 132,000 | 6.9% | 26 Jun, 2026 |
| 5 | David B Liner | Director | 118,080 | 0 | 118,080 | 6.2% | 17 Mar, 2023 |
| 6 | Valerie Gentile Sachs | Director | 105,334 | 0 | 105,334 | 5.5% | 03 Jun, 2026 |
| 7 | Claudio A Mannarino | Director | 78,697 | 0 | 78,697 | 4.1% | 03 Jun, 2026 |
| 8 | Ramesh Nuggihalli | Chief Operating Officer | 73,904 | 0 | 73,904 | 3.9% | 03 Apr, 2023 |
| 9 | Joycelynn Watkins-Asiyanbi | General Counsel And Secretary | 73,178 | 0 | 73,178 | 3.8% | 30 Jun, 2025 |
| 10 | Munish Nanda | Director | 64,246 | 0 | 64,246 | 3.3% | 03 Jun, 2026 |
| 11 | Paul M Gohr | Chief Accounting Officer | 54,564 | 0 | 54,564 | 2.8% | 03 Apr, 2023 |
| 12 | Chasity Henry | Officer | 48,900 | 0 | 48,900 | 2.5% | 12 Nov, 2021 |
| 13 | Marcus J George | Director | 38,905 | 0 | 38,905 | 2.0% | 03 Jun, 2026 |
| 14 | Peter K. Johansson | Svp, Chief Financial Officer | 37,832 | 0 | 37,832 | 2.0% | 18 Aug, 2026 |
| 15 | Robert E Jr Knowling | Director | 23,939 | 0 | 23,939 | 1.2% | 03 Jun, 2026 |
| 16 | Alyson Noel Gregory | General Counsel | 23,019 | 0 | 23,019 | 1.2% | 02 Apr, 2026 |
| 17 | Laurie Siegel | Director | 22,133 | 0 | 22,133 | 1.2% | 03 Jun, 2026 |
| 18 | Candace Harris-Peterson | Chief Human Resources Officer | 21,101 | 0 | 21,101 | 1.1% | 17 Jul, 2026 |
| 19 | Kiril Kovachev | Chief Accounting Officer | 15,801 | 0 | 15,801 | 0.8% | 07 Jul, 2026 |
| 20 | Victor L Jr Richey | Director | 6,378 | 0 | 6,378 | 0.3% | 03 Jun, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 15 Aug, 2026 | Peter K. Johansson | Svp, Chief Financial Officer | Disposed F | 2,914 | $79.59 | $231.93K | 37,832 | Direct |
| 15 Jul, 2026 | Candace Harris-Peterson | Chief Human Resources Officer | Disposed F | 890 | $79.03 | $70.34K | 21,101 | Direct |
| 05 Jul, 2026 | Kiril Kovachev | Chief Accounting Officer | Disposed F | 460 | $82.15 | $37.79K | 15,801 | Direct |
| 24 Jun, 2026 | Jason Dezwirek | Director | Disposed S | 34,000 | $96.61 | $3.28Mn | 166,000 | Indirect |
| 24 Jun, 2026 | Peter K. Johansson | Svp, Chief Financial Officer | Disposed S | 30,000 | $96.49 | $2.89Mn | 40,746 | Direct |
| 25 Jun, 2026 | Jason Dezwirek | Director | Disposed S | 34,000 | $97.28 | $3.31Mn | 132,000 | Indirect |
| 08 Jun, 2026 | Candace Harris-Peterson | Chief Human Resources Officer | Acquired A | 3,105 | $0.00 | $0 | 21,991 | Direct |
| 01 Jun, 2026 | Jason Dezwirek | Director | Acquired A | 2,215 | $0.00 | $0 | 1,236,080 | Direct |
| 01 Jun, 2026 | Robert E Jr Knowling | Director | Acquired A | 2,215 | $0.00 | $0 | 13,077 | Direct |
| 01 Jun, 2026 | Marcus J George | Director | Acquired A | 36,690 | — | — | 36,690 | Direct |
| 01 Jun, 2026 | Richard F Wallman | Director | Acquired A | 3,443 | $0.00 | $0 | 233,352 | Direct |
| 01 Jun, 2026 | Munish Nanda | Director | Acquired A | 2,215 | $0.00 | $0 | 64,246 | Direct |
| 01 Jun, 2026 | Laurie Siegel | Director | Acquired A | 2,215 | $0.00 | $0 | 22,133 | Direct |
| 01 Jun, 2026 | Victor L Jr Richey | Director | Acquired A | 6,378 | — | — | 6,378 | Direct |
| 01 Jun, 2026 | Valerie Gentile Sachs | Director | Acquired A | 3,190 | $0.00 | $0 | 105,334 | Direct |
| 01 Jun, 2026 | Claudio A Mannarino | Director | Acquired A | 1,108 | $0.00 | $0 | 78,697 | Direct |
| 01 Jun, 2026 | Candace Harris-Peterson | Chief Human Resources Officer | Acquired A | 3,133 | — | — | 3,133 | Direct |
| 01 Jun, 2026 | Victor L Jr Richey | Director | Acquired A | 2,215 | $0.00 | $0 | 2,215 | Direct |
| 01 Jun, 2026 | Marcus J George | Director | Acquired A | 2,215 | $0.00 | $0 | 38,905 | Direct |
| 01 Jun, 2026 | Claudio A Mannarino | Director | Acquired A | 1,107 | $0.00 | $0 | 7,113 | Direct |