Capital Stock

6 Months Ended

Jun. 30, 2026

Equity [Abstract]

Capital Stock

Capital Stock

Preferred Stock - The Company has authorized 100,000 shares of $50 par value 4.5% cumulative preferred nonvoting stock, which is callable at $52.50. There were 71,340 shares issued and 52,998 shares held in treasury at both June 30, 2026, and December 31, 2025. The Treasury shares at cost line in the unaudited Condensed Consolidated Balance Sheets includes $1.8 million related to preferred stock. There were no shares of preferred stock purchased and subsequently held in treasury during the six months ended June 30, 2026, or 2025. The Company has also authorized 1,000,000 shares of $10 par value second cumulative preferred voting stock. No shares have been issued as of June 30, 2026, or December 31, 2025.

Common Stock - The Company has authorized 180,000,000 shares of no par value common stock. There were 62,081,391 shares issued as of June 30, 2026, and December 31, 2025. No new shares were issued during the six months ended June 30, 2026, or 2025. There were 38,604,306 and 38,912,629 shares outstanding at June 30, 2026, and December 31, 2025, respectively.

Treasury Shares - The Company's 2026 stock repurchase program authorizes up to $500.0 million to repurchase MSA common stock in the open market and in private transactions. The stock repurchase program has no expiration date. The maximum number of shares that may be repurchased is calculated based on the dollars remaining under the program and the respective month-end closing share price. During the six months ended June 30, 2026, and 2025, the Company repurchased 427,855 and 248,768 shares, respectively, under this and the prior stock repurchase program. There were 23,477,085 and 23,168,762 treasury shares at June 30, 2026, and December 31, 2025, respectively.

The Company issues treasury shares for all stock-based benefit plans. Shares are issued from treasury at the average treasury share cost on the date of the transaction. There were 176,136 and 187,455 Treasury shares issued for these purposes during the six months ended June 30, 2026, and 2025, respectively.

Common stock activity is summarized as follows:

	Three Months Ended June 30, 2026				Three Months Ended June 30, 2025
(In thousands)	Common Stock		Treasury Cost(a)		Common Stock		Treasury Cost(a)
Balance at beginning of period	$	344,328	$	(540,194)	$	330,077	$	(412,212)
Stock compensation expense	7,809		—		5,370		—
Restricted and performance stock awards	(435)		435		(365)		365
Stock options exercised	—		1		158		109
Treasury shares purchased for stock compensation programs	—		(455)		—		(534)
Employee stock purchase program	895		184		935		147
Share repurchase program	—		(25,679)		—		(29,998)
Balance at end of period	$	352,597	$	(565,708)	$	336,175	$	(442,123)
(a)Excludes treasury cost related to preferred stock.
	Six Months Ended June 30, 2026				Six Months Ended June 30, 2025
(In thousands)	Common Stock		Treasury Cost(a)		Common Stock		Treasury Cost(a)
Balance at beginning of period	$	343,842	$	(483,248)	$	329,953	$	(396,604)
Stock compensation expense	11,621		—		7,999		—
Restricted and performance stock awards	(3,773)		3,773		(3,007)		3,007
Stock options exercised	12		11		295		202
Treasury shares purchased for stock compensation programs	—		(10,302)		—		(8,880)
Employee stock purchase program	895		184		935		147
Share repurchase program	—		(76,126)		—		(39,995)
Balance at end of period	$	352,597	$	(565,708)	$	336,175	$	(442,123)
(a)Excludes treasury cost related to preferred stock.