FEDERAL SIGNAL CORP /DE/

Item 5. Other Information.

Press Release

On October 29, 2026, the Company issued a press release announcing its financial results for the three and nine months ended September 30, 2026. The presentation slides for the third quarter 2026 earnings call were also posted on the Company’s website at that time. The full text of the third quarter financial results press release is included at Exhibit 99.1 and the earnings presentation is included at Exhibit 99.2 to this Form 10-Q.

Rule 10b5-1 Trading Plans

The Company’s Section 16 officers and directors (as defined in Rule 16a-1 under the Exchange Act) may from time to time enter into plans for the purchase or sale of Company stock that are intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act. During the quarter ended September 30, 2026, the following Section 16 officer adopted or terminated a “Rule 10b5-1 trading arrangement” (as defined in Item 408 of Regulation S-K under the Exchange Act):

•Mark D. Weber, Senior Vice President and Chief Operating Officer, adopted a new trading plan on August 26, 2026. Mr. Weber’s plan is scheduled to terminate on March 26, 2027, subject to early termination for certain specified events set forth in the plan. The trading plan is intended to permit Mr. Weber to sell up to 35,000 shares of common stock of the Company.

The Rule 10b5-1 trading arrangement described above was adopted and precleared in accordance with the Company’s Insider Trading Policy and actual sale transactions made pursuant to such trading arrangement will be disclosed publicly in future Section 16 filings with the SEC.