[Form 4] Mine Safety Incorporated Insider Trading Activity

Rhea-AI Filing Summary

Jonathan D. Buck, Chief Accounting Officer of MSA Safety Inc (MSA), reported a sale of 424 shares of the issuer's common stock on 08/31/2025 at a reported price of $170.6 per share. After the transaction, he beneficially owned 4,767 shares directly. The Form 4 was signed by an attorney-in-fact, Richard W. Roda, on 09/03/2025. The filing indicates this report was made by one reporting person.

Insights

Securities Analyst

TL;DR: Chief Accounting Officer sold a small holding; post-sale direct ownership remains modest.

The filing documents a single open-market disposition of 424 common shares at $170.6 on 08/31/2025 by Jonathan D. Buck, who serves as Chief Accounting Officer and is filing as an officer reporting person. The transaction reduced his direct holdings to 4,767 shares. The Form 4 was executed via attorney-in-fact on 09/03/2025. This is a routine Section 16 disclosure of insider selling and contains no additional context such as reason for sale or planned transactions.

Corporate Governance Expert

TL;DR: Routine insider sale disclosed; signature by attorney-in-fact is properly noted.

The Form 4 shows an authorized representative signed the filing on behalf of the reporting person, which is a standard administrative practice. The report states the filer is an officer (Chief Accounting Officer) and that the form was filed by one reporting person. No derivative transactions, amendments, or indicators of Rule 10b5-1 plans are disclosed. The disclosure appears complete for the reported transaction.

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

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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^*

Buck Jonathan D.

(Last) (First) (Middle)

1000 CRANBERRY WOODS DRIVE

(Street)

CRANBERRY WOODS TOWNSHIP PA 16066

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
MSA Safety Inc [ MSA ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
08/31/2025

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, no par value	08/31/2025		F		424	D	$170.6	4,767	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

Explanation of Responses:

	Richard W. Roda, Attorney in Fact	09/03/2025
	** 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 transaction did Jonathan D. Buck report on the Form 4 for MSA (MSA)?

He reported a sale of 424 shares of MSA common stock on 08/31/2025 at a reported price of $170.6 per share.

How many MSA shares does Jonathan D. Buck own after the reported transaction?

The Form 4 shows he beneficially owned 4,767 shares directly following the transaction.

What is Jonathan D. Buck's role at MSA as stated on the filing?

The filing lists him as an Officer, specifically the Chief Accounting Officer.

Who signed the Form 4 and when was it signed?

The Form 4 was signed by Richard W. Roda, Attorney in Fact on 09/03/2025.

Does the Form 4 show any derivative transactions or Rule 10b5-1 plan activity?

No. The filing lists only a non-derivative sale of common stock and does not indicate any derivative transactions or an explicit 10b5-1 plan.