{"url_path":"/sec/ceco/8-k/2026-06-01/cover-page","section_key":"cover-page","section_title":"Cover Page","topic":"sec","document":{"doc_type":"8-K","doc_date":"2026-06-01","source_url":"https://www.sec.gov/Archives/edgar/data/3197/0001104659-26-068661-index.html","accession_number":"0001104659-26-068661","cik":"0000003197","ticker":"CECO","issuer_name":"CECO ENVIRONMENTAL CORP","edgar_url":"https://www.sec.gov/Archives/edgar/data/3197/0001104659-26-068661-index.html","primary_entity_key":"0000003197","primary_entity_name":"CECO ENVIRONMENTAL CORP"},"word_count":498,"has_tables":true,"body_markdown":"--12-31\nfalse\n0000003197\n\n0000003197\n\n2026-06-01\n2026-06-01\n\niso4217:USD\n\nxbrli:shares\n\niso4217:USD\n\nxbrli:shares\n\n \n\n \n\n \n\n**UNITED STATES**\n\n**SECURITIES AND EXCHANGE COMMISSION**\n\n**Washington, DC 20549**\n\n \n\n \n\n**FORM 8-K**\n\n \n\n**CURRENT REPORT**\n\n**Pursuant to Section 13 or 15(d) of\n\nThe Securities Exchange Act of 1934**\n\n \n\n**Date of Report (Date of earliest event reported):\nJune 1, 2026**\n\n \n\n \n\n**CECO ENVIRONMENTAL CORP.**\n\n(Exact name of registrant as specified in its charter)\n\n \n\n \n\n**Delaware**\n**000-7099**\n**13-2566064**\n\n(State or other jurisdiction\n\nof incorporation)\n(Commission\n\nFile Number)\n(IRS Employer\n\nIdentification No.)\n\n \n\n**5080 Spectrum Drive,** **East Tower, Suite 800E** **Addison, Texas 75001**\n\n(Address of principal executive\noffices, including zip code)\n\n \n\n**(214) 357-6181**\n\n(Registrant’s telephone number, including area code)\n\n \n\n**N/A**\n\n(Former name or former address, if changed since last report)\n\n \n\n \n\nCheck the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under\nany of the following provisions:\n\n \n\n¨Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)\n\n \n\n¨Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)\n\n \n\n¨Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))\n\n \n\n¨Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))\n\n \n\n**Securities registered pursuant\nto Section 12(b) of the Act:**\n\n \n\n**Title\nof each class**\n \n**Trading\n\nSymbol(s)**\n \n**Name\nof each exchange on which registered**\n\nCommon Stock, par value $0.01 per share\n \nCECO\n \nThe Nasdaq Stock Market LLC\n\n \n\nIndicate by check mark whether the registrant is an emerging growth\ncompany as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities\nExchange Act of 1934 (§ 240.12b-2 of this chapter).\n\n \n\nEmerging growth company ¨\n\n \n\nIf an emerging\ngrowth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any\nnew or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨\n\n \n\n \n\n \n\n \n\n \n\n \n\nAs previously disclosed, on February 23, 2026, CECO Environmental\nCorp., a Delaware corporation (“CECO” or the “Company”), Longhorn Merger Sub, Inc., a Delaware corporation\nand a direct wholly-owned subsidiary of the Company (“Merger Sub Inc.”), Longhorn Merger Sub LLC, a Delaware limited liability\ncompany and a direct wholly-owned subsidiary of the Company (“Merger Sub LLC” and, together with Merger Sub Inc., the “Merger\nSubs”), and Thermon Group Holdings, Inc., a Delaware corporation (“Thermon”), entered into an Agreement and Plan\nof Merger (as amended, supplemented, or restated, the “Merger Agreement”), pursuant to which, among other matters, and subject\nto the satisfaction or waiver of the conditions set forth in the Merger Agreement, (i) Merger Sub Inc. was to merge with and into\nThermon, with Thermon continuing as a wholly-owned subsidiary of the Company and the surviving corporation of the merger (the “First\nMerger”), and (ii) Thermon, as the surviving corporation of the First Merger, was to merge with and into Merger Sub LLC, with\nMerger Sub LLC being the surviving entity of the merger (the “Second Merger” and, together with the First Merger, the “Mergers”)."}