MSA Safety Inc (MSA) director discloses 9,634-share stock disposition

Rhea-AI Filing Summary

MSA Safety Inc reported an insider stock transaction by a director. On 12/12/2025, the director disposed of 9,634 shares of common stock (no par value) at a reported price of $0.0000, identified with transaction code "G." Following this transaction, the director beneficially owned 34,727 common shares directly. The filing also shows additional indirect holdings of 13,500 shares held by a GRAT associated with the director’s wife and 40,250 shares held by the wife. This gives a clearer picture of the director’s remaining ownership stake after the reported disposition.

Insider Trade Summary

9,634 shares gifted

Mixed 3 txns

Insider LAMBERT WILLIAM M

Role Director

Type	Security	Shares	Price	Value
Gift	Common Stock, no par value	9,634	$0.00	--
holding	Common Stock, no par value	--	--	--
holding	Common Stock, no par value	--	--	--

Holdings After Transaction: Common Stock, no par value — 34,727 shares (Direct); Common Stock, no par value — 13,500 shares (Indirect, By GRAT (Wife))

Footnotes (1)

Form 4 Insider Transactions: What Each Field Means →

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^*

LAMBERT WILLIAM M

(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)

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

3. Date of Earliest Transaction (Month/Day/Year)
12/12/2025

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	12/12/2025		G		9,634	D	$0.0000	34,727	D
Common Stock, no par value								13,500	I	By GRAT (Wife)
Common Stock, no par value								40,250	I	By Wife

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	12/16/2025
	** 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 insider transaction did MSA (MSA Safety Inc) report in this filing?

The filing reports that a director of MSA Safety Inc disposed of 9,634 shares of the company’s common stock on 12/12/2025, using transaction code "G," at a reported price of $0.0000 per share.

How many MSA common shares does the director own after the 12/12/2025 transaction?

After the reported transaction, the director beneficially owns 34,727 shares of MSA common stock directly, plus indirect holdings of 13,500 shares held by a GRAT associated with the director’s wife and 40,250 shares held by the wife.

What type of security was involved in the MSA insider transaction?

The transaction involved common stock, no par value, of MSA Safety Inc, as shown in Table I of the filing.

What is the relationship of the reporting person to MSA Safety Inc (MSA)?

The reporting person is identified as a Director of MSA Safety Inc, according to the relationship section of the form.

Were any derivative securities of MSA reported in this Form 4?

Table II, which covers derivative securities such as options or warrants, does not list any derivative securities acquired, disposed of, or beneficially owned in this filing.

Who signed the MSA insider transaction report?

The report was signed by Richard W. Roda as Attorney in Fact on 12/16/2025, indicating he signed on behalf of the reporting person.