Was Katrina Helmkamp’s Federal Signal (FSS) share grant an open-market purchase?

No. The filing shows the 1,277 shares were acquired with a transaction code “A” at $0.00 per share. This code and price indicate a grant, award, or other acquisition as part of compensation, not an open-market stock purchase on an exchange.

Federal Signal director gets 1,277-share stock grant

Federal Signal Corp (FSS) director Katrina L. Helmkamp received a grant of 1,277 shares of Common Stock.

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Form Type

Rhea-AI Filing Summary

Federal Signal Corp (FSS) director Katrina L. Helmkamp received a grant of 1,277 shares of Common Stock. The shares were awarded on April 21, 2026 at a stated price of $0.00 per share, indicating a compensation-related award rather than an open-market purchase.

After this grant, Helmkamp directly holds 5,603 shares of Federal Signal common stock, according to the filing. The transaction is reported as a grant, award, or other acquisition, and there were no corresponding sales, option exercises, or derivative positions disclosed in this filing.

Insider Trade Summary

Grant/Award: 1,277 shares

Grant/Award 1 txn

Insider Helmkamp Katrina L

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	1,277	$0.00	$0.00

Holdings After Transaction: Common Stock — 5,603 shares (Direct)

Key Figures

Shares granted: 1,277 shares Grant price: $0.00 per share Shares owned after grant: 5,603 shares +1 more

4 metrics

Shares granted 1,277 shares Common Stock grant on April 21, 2026

Grant price $0.00 per share Stated transaction price for awarded shares

Shares owned after grant 5,603 shares Total direct holdings after transaction

Transaction code A Grant, award, or other acquisition of Common Stock

Key Terms

Common Stock, Grant, award, or other acquisition, Form 4

3 terms

Common Stock financial

"security_title: "Common Stock""

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

Grant, award, or other acquisition financial

"transaction_code_description: "Grant, award, or other acquisition""

Form 4 regulatory

"INSIDER FILING DATA (Form 4)"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Federal Signal (FSS) director Katrina Helmkamp report in this Form 4?

Director Katrina L. Helmkamp reported receiving a grant of 1,277 shares of Federal Signal common stock. The award was recorded at $0.00 per share, reflecting a compensation-related grant rather than a market purchase, and increased her direct holdings to 5,603 shares.

How many Federal Signal (FSS) shares did Katrina Helmkamp acquire in this transaction?

Katrina Helmkamp acquired 1,277 shares of Federal Signal common stock in this Form 4 transaction. The filing classifies it as a grant, award, or other acquisition, with no cash price per share disclosed, indicating it was part of her director compensation package.

What are Katrina Helmkamp’s total Federal Signal (FSS) holdings after the reported grant?

Following the reported grant, Katrina Helmkamp directly holds 5,603 shares of Federal Signal common stock. This total reflects the new 1,277-share award added to her prior holdings, as disclosed in the Form 4, with all of these shares listed as directly owned.

Does this Federal Signal (FSS) Form 4 include any stock sales by Katrina Helmkamp?

The Form 4 does not report any stock sales by Katrina Helmkamp. It shows only one acquisition transaction coded “A” for 1,277 common shares as a grant or award, with no corresponding sale, option exercise, gift, or tax-withholding disposition listed.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 04/23/2026 - 01:56 PM EDT

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^*

Helmkamp Katrina L

(Last)

(First)

(Middle)

1333 BUTTERFIELD ROAD

SUITE 500

(Street)

DOWNERS GROVE

ILLINOIS

60515

(City)

(State)

(Zip)

UNITED STATES

(Country)

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

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/21/2026

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

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

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

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	04/21/2026		A		1,277	A	$0	5,603	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

Remarks:

	Diane I. Bonina, attorney-in-fact for Katrina L. Helmkamp	04/23/2026
	** 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.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR