Shareholder Vote

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): April 21, 2026 ___________________________________ Federal Signal Corporation (Exact name of registrant as specified in its charter) ___________________________________ Delaware 001-6003 36-1063330 (State or other jurisdiction  of incorporation) (Commission File  Number) (IRS Employer  Identification No.) 1333 Butterfield Road , Downers Grove , Illinois (Address of principal executive offices) 60515 (Zip Code) ( 630 )  954-2000 (Registrant’s telephone number, including area code) ___________________________________ 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(s) Name of each exchange on which registered Common Stock, par value $1.00 per share FSS New York Stock Exchange   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. o     Item 5.07 Submission of Matters to a Vote of Security Holders. On April 21, 2026, Federal Signal Corporation (the “Company”) held its 2026 Annual Meeting of Stockholders (the “Annual Meeting”). As of the February 23, 2026 record date, there were 60,892,151 shares of the Company’s common stock outstanding. The holders of 57,977,820 shares of common stock, representing 95.2% of the outstanding shares entitled to vote as of the record date, were represented at the Annual Meeting in person or by proxy. This amount represented a quorum. Set forth below are the final voting results for each of the three proposals submitted to a vote of the Company’s stockholders at the Annual Meeting. The proposals are described in detail in the Company’s 2026 Proxy Statement, filed with the Securities and Exchange Commission on March 6, 2026 (the “2026 Proxy Statement”). Proposal 1. The following nominees were elected to the Company’s Board of Directors (the “Board”) to hold office for one year or until their successors are elected and qualified. There were no abstentions, and 1,508,350 broker non-votes, with respect to this matter. The voting results were as follows: For Withhold Katrina L. Helmkamp 55,473,153  996,317  Eugene J. Lowe, III 55,583,055  886,415  Richard A. Maue 56,280,786  188,684  Shashank Patel 55,761,701  707,769  Brenda L. Reichelderfer 54,691,381  1,778,089  Jennifer L. Sherman 55,803,014  666,456  Eric A. Vaillancourt 56,218,646  250,824  John L. Workman 53,929,611  2,539,859  Proposal 2. The stockholders, in an advisory vote, approved the named executive officer compensation as disclosed in the 2026 Proxy Statement. There were 1,508,350 broker non-votes with respect to this matter. The voting results were as follows: For Against Abstentions 52,070,782 4,341,853 56,835 Proposal 3. The stockholders ratified the appointment of Deloitte & Touche LLP as the Company’s independent registered public accounting firm for 2026. There were no broker non-votes with respect to this matter. The voting results were as follows: For Against Abstentions 57,543,013 415,535 19,272 Item 9.01 Financial Statements and Exhibits. (d) Exhibits 104 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. FEDERAL SIGNAL CORPORATION Dated: April 22, 2026 By: /s/ Ian Hudson Ian A. Hudson, Senior Vice President, Chief Financial Officer