[Form 4] FEDERAL SIGNAL CORP /DE/ Insider Trading Activity

Rhea-AI Filing Summary

Federal Signal (FSS) reported insider activity. On 11/06/2025, SVP & COO Mark Weber exercised multiple stock options and sold shares the same day. Exercises included 2,546 shares at $27.8, 15,682 shares at $42.86, 19,780 shares at $35.8, 11,470 shares at $51.81, and 1,709 shares at $82.31.

Subsequent open‑market sales were reported at weighted average prices including $112.5457, $112.5001, $111.7011, $111.6109, $112.34, $111.0531, and $110.745, with detailed trade ranges available upon request as noted. Following these transactions, the reporting person held 73,874 shares of common stock directly.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

WEBER MARK

(Last) (First) (Middle)

1333 BUTTERFIELD ROAD

SUITE 500

(Street)

DOWNERS GROVE IL 60515

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
FEDERAL SIGNAL CORP /DE/ [ FSS ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP & COO

3. Date of Earliest Transaction (Month/Day/Year)
11/06/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	11/06/2025		M		2,546	A	$27.8	76,420	D
Common Stock	11/06/2025		S		2,546	D	$112.5457(1)	73,874	D
Common Stock	11/06/2025		M		15,682	A	$42.86	89,556	D
Common Stock	11/06/2025		S		1,640	D	$112.5001(2)	87,916	D
Common Stock	11/06/2025		S		14,042	D	$111.7011(3)	73,874	D
Common Stock	11/06/2025		M		19,780	A	$35.8	93,654	D
Common Stock	11/06/2025		S		19,760	D	$111.6109(4)	73,894	D
Common Stock	11/06/2025		S		20	D	$112.34	73,874	D
Common Stock	11/06/2025		M		11,470	A	$51.81	85,344	D
Common Stock	11/06/2025		S		11,470	D	$111.0531(5)	73,874	D
Common Stock	11/06/2025		M		1,709	A	$82.31	75,583	D
Common Stock	11/06/2025		S		1,709	D	$110.745(6)	73,874	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (right-to-buy)	$27.8	11/06/2025		M			2,546	(7)	05/08/2030	Common Stock	2,546	$0	0	D
Stock Option (right-to-buy)	$42.86	11/06/2025		M			15,682	(8)	05/06/2031	Common Stock	15,682	$0	0	D
Stock Option (right-to-buy)	$35.8	11/06/2025		M			19,780	(9)	05/04/2032	Common Stock	19,780	$0	0	D
Stock Option (right-to-buy)	$51.81	11/06/2025		M			11,470	(10)	05/04/2033	Common Stock	11,470	$0	5,734	D
Stock Option (right-to-buy)	$82.31	11/06/2025		M			1,709	(11)	05/02/2034	Common Stock	1,709	$0	8,545	D

Explanation of Responses:

1. This transaction was executed in multiple trades at prices ranging from $112.05 to $112.63; the price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide full information regarding the number of shares and prices at which the transactions were effected upon request to the SEC, Federal Signal Corporation, or a security holder of Federal Signal Corporation.

2. This transaction was executed in multiple trades at prices ranging from $112.46 to $112.69; the price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide full information regarding the number of shares and prices at which the transactions were effected upon request to the SEC, Federal Signal Corporation, or a security holder of Federal Signal Corporation.

3. This transaction was executed in multiple trades at prices ranging from $111.28 to $112.13; the price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide full information regarding the number of shares and prices at which the transactions were effected upon request to the SEC, Federal Signal Corporation, or a security holder of Federal Signal Corporation.

4. This transaction was executed in multiple trades at prices ranging from $111.25 to $112.20; the price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide full information regarding the number of shares and prices at which the transactions were effected upon request to the SEC, Federal Signal Corporation, or a security holder of Federal Signal Corporation.

5. This transaction was executed in multiple trades at prices ranging from $110.71 to $111.51; the price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide full information regarding the number of shares and prices at which the transactions were effected upon request to the SEC, Federal Signal Corporation, or a security holder of Federal Signal Corporation.

6. This transaction was executed in multiple trades at prices ranging from $110.71 to $110.78; the price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide full information regarding the number of shares and prices at which the transactions were effected upon request to the SEC, Federal Signal Corporation, or a security holder of Federal Signal Corporation.

7. The option vested as to 8,122 shares on 05/08/2021, 8,121 shares on 05/08/2022 and 8,121 shares on 05/08/2023.

8. The option vested as to 5,228 shares on 05/06/2022, 5,227 shares on 05/06/2023 and 5,227 shares on 05/06/2024.

9. The option vested as to 6,594 shares on 05/04/2023, 6,593 shares on 05/04/2024 and 6,593 shares on 05/04/2025.

10. The option vested as to 5,735 shares on 05/04/2024 and 5,735 shares on 05/04/2025. The remaining 5,734 options will vest on 05/04/2026.

11. The option vested as to 3,418 shares on 05/02/2025. The remaining options will vest as to 3,418 shares on 05/02/2026 and 3,418 shares on 05/02/2027.

Remarks:

	Diane I. Bonina, attorney-in-fact for Mark Weber	11/10/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did FSS insider Mark Weber report on Form 4?

He exercised multiple stock options and sold shares on 11/06/2025, then directly held 73,874 shares afterward.

How many shares does the FSS insider hold after the transactions?

The reporting person directly owned 73,874 shares following the reported transactions.

What option exercise prices were disclosed for FSS?

Exercises included strike prices of $27.8, $42.86, $35.8, $51.81, and $82.31.

At what prices were FSS shares sold by the insider?

Weighted average sale prices included $112.5457, $112.5001, $111.7011, $111.6109, $112.34, $111.0531, and $110.745.

What is the insider’s role at Federal Signal (FSS)?

The reporting person is an Officer, serving as SVP & COO.

Were the sales executed as multiple trades?

Yes. The filing notes multiple trades with price ranges for certain sales and offers to provide full details upon request.