Fuel Tech, Inc.

Item 5.07. Submission of Matters to a Vote of Security Holders. On June 4, 2026, Fuel Tech, Inc., a Delaware corporation (the “Company”) held its Annual Meeting of Stockholders, at which the stockholders voted upon: (a) the election of Vincent J. Arnone, Douglas G. Bailey, Sharon L. Jones, and Dennis L. Zeitler to the Company’s Board of Directors until the Company’s next Annual Meeting of Stockholders or until they resign or their respective successors are duly elected and qualified; (b) the ratification of the appointment of RSM US LLP as the Company’s independent registered public accounting firm; and (c) an advisory vote on executive compensation. The stockholders elected all four directors, approved the ratification of the appointment of RSM US LLP as the Company’s independent registered public accounting firm and approved, on an advisory, non-binding basis, the Company’s executive compensation. The number of votes cast for or against (or withheld) and the number of abstentions and broker non-votes with respect to each matter voted upon, as applicable, are set forth below. Proposal 1: Election of Directors Director For Withheld Broker Non-Votes ────────────────────────────────────────────────────────────────────────── Vincent J. Arnone 10,736,369 2,002,423 7,278,620 Douglas G. Bailey 9,855,836 2,879,056 7,278,620 Sharon L. Jones 12,340,114 397,103 7,278,620 Dennis L. Zeitler 12,323,119 411,581 7,278,620 Proposal 2: Ratification of RSM US LLP as the Company’s independent registered public accounting firm For Against Abstain ──────────────────────────────────────── 19,552,321 411,581 38,542 Proposal 3: Advisory vote on executive compensation For Against Abstain Broker Non-Votes ────────────────────────────────────────────────────────────── 11,949,173 637,014 187,055 7,278,620