FUEL TECH, INC. — Board/Management Information 2025

Dec 12, 2025

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) December 11, 2025

FUEL TECH, INC.

(Exact name of registrant as specified in its charter)

Delaware (State or other jurisdiction of incorporation) 001-33059 (Commission File Number) 20-5657551 (IRS Employer Identification No.)

Fuel Tech, Inc. 27601 Bella Vista Parkway Warrenville , IL 60555-1617 630 - 845-4500

(Address and telephone number of principal executive offices)

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

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock	FTEK	NASDAQ Capital Market

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 provision:

☐ 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))

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 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

On December 11, 2025, the Compensation Committee (the “Committee”) of the Board of Directors of Fuel Tech, Inc. (“Fuel Tech” or the “Company”) took the following actions:

1. The Committee adopted Fuel Tech’s 2026 APC and National Sales Manager Commission Plan (the “APC Plan”) and 2026 FUEL CHEM® Officer Sales Commission Plan (the “FUEL CHEM” Plan). Each of the APC Plan and the FUEL CHEM Plan provide for sales commission payments to be made to Fuel Tech’s Senior Vice President, Sales (William E. Cummings, Jr.). Under the APC Plan, Fuel Tech will pay to its Senior Vice President, Sales a commission equal to a specified percentage of the as-sold contract value of all sales of products and services in Fuel Tech’s APC product line in the United States and Canada. The FUEL CHEM Plan provides for sales commission payments to be made to Fuel Tech’s Senior Vice President, Sales equal to a specified percentage of all net revenue realized for customer units located in the United States and Canada. Copies of the APC Plan and the FUEL CHEM Plan are attached as Exhibits 99.1 and 99.2 to this Report on Form 8-K.

ITEM 9.01 Financial Statements and Exhibits

Exhibit No.	Description
99.1	2026 APC and National Sales Manager Commission Plan
99.2	2026 FUEL CHEM ® Officer Sales Commission Plan
104	Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)

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.

By:	/s/ Bradley W. Johnson
	Bradley W. Johnson
Date: December 12, 2025	Vice President, General Counsel and Secretary