SEC Form 4 · accession 0001193125-26-255977
CECO ENVIRONMENTAL CORP · CECO
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Candace Harris-Peterson
Officer — Chief Human Resources Officer
Period of report
Jun 1, 2026
Accepted (ET)
Jun 3, 2026 · 7:02 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0000003197
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common StockF3,F1,F2 | Jun 1, 2026 | A | 3,133 | — | A | 3,133 | D | |
| Common StockF4,F1,F2 | Jun 1, 2026 | A | 2,735 | — | A | 5,868 | D | |
| Common StockF5,F1,F2 | Jun 1, 2026 | A | 6,313 | — | A | 12,181 | D | |
| Common StockF6,F1,F2 | Jun 1, 2026 | A | 1,401 | — | A | 13,582 | D | |
| Common StockF7,F1,F2 | Jun 1, 2026 | A | 4,679 | — | A | 18,261 | D | |
| Common StockF8,F1,F2 | Jun 1, 2026 | A | 625 | — | A | 18,886 | D |
Table II — derivative securities
No Table II lines on this filing.
Explanation of responses
- F1On June 1, 2026 (the "Closing Date"), pursuant to an Agreement and Plan of Merger, dated as of February 23, 2026 (the "Merger Agreement"), by and among CECO Environmental Corp. (the "Issuer"), Thermon Group Holdings, Inc. ("Thermon"), Longhorn Merger Sub, Inc. ("Merger Sub, Inc.") and Longhorn Merger Sub LLC ("Merger Sub LLC"), (i) Merger Sub, Inc. merged with and into Thermon, with Thermon continuing as a wholly-owned subsidiary of the Issuer and the surviving corporation of the merger (the "First Merger") and (ii) Thermon, as the surviving corporation of the First Merger, merged with and into Merger Sub LLC, with Merger Sub LLC being the surviving entity of the merger.
- F2(Continued from Footnote 1) Pursuant to the Merger Agreement, at the effective time of the First Merger (the "Effective Time"), each outstanding restricted stock unit of Thermon (each a "Thermon RSU") and outstanding award of performance units (each a "Thermon PU"), was automatically assumed by the Issuer and converted into a restricted stock unit with respect to a number of shares of the Issuer's common stock equal to the product of (x) the number of shares of Thermon's common stock subject to such Thermon RSU or Thermon PU and (y) 0.8110 (each, a "Converted RSU Award").
- F3On May 12, 2026, the Reporting Person was granted an award of Thermon RSUs, which was assumed and converted into a Converted RSU Award that vests in equal installments on each of June 1, 2027, June 1, 2028 and June 1, 2029.
- F4On June 1, 2025, the Reporting Person was granted an award of Thermon RSUs, which was assumed and converted into a Converted RSU Award that vested as to one-third on June 1, 2026 and vests as to one-third on each of June 1, 2027 and June 1, 2028.
- F5On June 1, 2025, the Reporting Person was granted an award of Thermon PUs, which was assumed and converted into a Converted RSU Award that vests in full on March 31, 2028.
- F6On June 1, 2024, the Reporting Person was granted an award of Thermon RSUs, which was assumed and converted into a Converted RSU Award that vested as to one-half on June 1, 2026 and vests as to one-half on June 1, 2027.
- F7On June 1, 2024, the Reporting Person was granted an award of Thermon PUs, which was assumed and converted into a Converted RSU Award that vests in full on March 31, 2027.
- F8On June 1, 2023, the Reporting Person was granted an award of Thermon RSUs, which was assumed and converted into a fully vested Converted RSU Award.