CECO files 8-K; Q3 2025 results furnished as Exhibit 99.1

Rhea-AI Filing Summary

CECO Environmental Corp. reported that it issued a press release announcing its financial results for the third quarter ended September 30, 2025. The company furnished the release as Exhibit 99.1 and referenced it in the report.

The information disclosed under Item 2.02, including the exhibit, is being furnished and is not deemed filed for purposes of Section 18 of the Exchange Act, nor incorporated into other filings unless specifically referenced. The filing also includes the Cover Page Interactive Data File as Exhibit 104.

8-K Event Classification

2 items: 2.02, 9.01

2 items

Item 2.02 Results of Operations and Financial Condition Financial

Disclosure of earnings results, typically an earnings press release or preliminary financials.

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, and exhibit attachments filed with this report.

Understanding 8-K Material Events →

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): October 28, 2025

CECO ENVIRONMENTAL CORP.

(Exact Name of registrant as specified in its charter)

Delaware		000-7099		13-2566064
(State or other jurisdiction of incorporation)		(Commission File Number)		(IRS Employer Identification No.)

5080 Spectrum Drive Suite 800E Addison, TX		75001
(Address of principal executive offices)		(Zip Code)

Registrant’s telephone number, including area code: (214) 357-6181

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol	Name of each exchange on which registered
Common Stock, par value $0.01 per share	CECO	The NASDAQ Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02. Results of Operations and Financial Condition.

On October 28, 2025, CECO Environmental Corp. issued a press release announcing its financial results for the third quarter ended September 30, 2025. A copy of the press release is furnished as Exhibit 99.1 to this report and is incorporated herein by reference.

The information in this Item 2.02, including the exhibit, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits

Exhibit Number		Exhibit Title
99.1 104		Press Release, CECO Environmental Reports Third Quarter 2025 Results Cover Page Interactive Data File (embedded within the Inline XBRL document).

Signatures

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Date: October 28, 2025				CECO Environmental Corp.
				By:		/s/ Kiril Kovachev
						Kiril Kovachev
						Chief Accounting Officer

FAQ

What did CECO (CECO) announce in this filing?

CECO stated it issued a press release announcing financial results for the third quarter ended September 30, 2025.

Which exhibit contains CECO’s Q3 2025 results?

The press release with the results is furnished as Exhibit 99.1.

Is the Q3 2025 information considered filed with the SEC?

No. The Item 2.02 information, including Exhibit 99.1, is furnished and not deemed filed under Section 18 of the Exchange Act.

What period do the results cover?

The results cover the third quarter ended September 30, 2025.

What other exhibit is included?

Exhibit 104, the Cover Page Interactive Data File embedded within the Inline XBRL document.

Where is CECO’s common stock listed?

CECO’s common stock trades on The NASDAQ Stock Market LLC under the symbol CECO.