---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-067250"
form_type: "8-K"
ticker: "CECO"
cik: "0000003197"
company_name: "CECO ENVIRONMENTAL CORP"
filed_at: "2026-05-28T12:06:06+00:00"
generated_at: "2026-05-28T12:10:36.328490+00:00"
event_type: "m_and_a"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# CECO & Thermon stockholders approve merger; ~99.93% voted in favor; expected close June 1, 2026

## Summary
- CECO stockholders approved stock issuance for Thermon merger with 29,620,269 for, 18,904 against, 37,796 abstain.
- Thermon stockholders approved merger with ~99.97% of votes cast in favor; final vote results to be filed separately.
- Merger expected to close on or around June 1, 2026, subject to customary conditions.
- Election results: 41.18% elected Stock Consideration (prorated to ~$1.48 cash + 0.7920 CECO share per THR share).
- CECO shareholders also approved 2026 Equity Plan adding up to 3.35M shares plus carryover from 2021 Plan.

## SEC filing metadata
- accession: 0001104659-26-067250
- form_type: 8-K
- ticker: CECO
- cik: 0000003197
- company_name: CECO ENVIRONMENTAL CORP
- filed_at: 2026-05-28T12:06:06+00:00
- event_type: m_and_a
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 5.02, 5.07, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/3197/000110465926067250/0001104659-26-067250-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/3197/000110465926067250/tm2615816d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-067250
- JSON: https://secwatch.observer/filing/0001104659-26-067250.json
- Plain text: https://secwatch.observer/filing/0001104659-26-067250.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.