JENNIFER L. SHERMAN - 02 May 2025 Form 4 Insider Report for FEDERAL SIGNAL CORP /DE/ (FSS)

Role: President & CEO, Director
Signature: Diane I. Bonina, attorney-in-fact for Jennifer L. Sherman
Issuer symbol: FSS
Transactions as of: 02 May 2025
Net transactions value: +$2,560,517
Form type: 4
Filing time: 06 May 2025, 18:07:06 UTC
Previous filing: 09 Apr 2025
Next filing: 27 May 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
SHERMAN JENNIFER L	President & CEO, Director	1333 BUTTERFIELD ROAD, SUITE 500, DOWNERS GROVE	Diane I. Bonina, attorney-in-fact for Jennifer L. Sherman	06 May 2025	0001282554

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	FSS	Common Stock	Award	$0	+13,997	+2.5%	$0.000000	579,718	02 May 2025	Direct	F1
transaction	FSS	Common Stock	Tax liability	$857,142	-9,900	-1.7%	$86.58	569,818	05 May 2025	Direct
holding	FSS	Common Stock						59,887	02 May 2025	held by 401(k) plan	F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	FSS	Stock Option (right to buy)	Award	$3,417,659	+39,474		$86.58	39,474	02 May 2025	Common Stock	39,474	$86.58	Direct	F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	This represents a restricted stock award. All 13,997 shares vest on 05/02/2028.
F2	Units held in the Issuer 401(k) plan, which are convertible into Issuer common stock, were adjusted from 59,911.9873 to 59,887.0215 based on the Issuer price per share of $86.58 on 05/02/2025.
F3	Options become exercisable as to 13,158 shares on 05/02/2026, 13,158 shares on 05/02/2027 and the remaining 13,158 shares on 05/02/2028.