Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	AOCI Including Portion Attributable to Noncontrolling Interest	Treasury Stock, Common	DCP Vested Stock
Shares, Outstanding, Beginning Balance at Dec. 31, 2024		41,878,000
Beginning Balance at Dec. 31, 2024	$ 1,805,348	$ 424	$ 307,197	$ 1,646,568	$ (46,773)		$ (100,771)	$ (1,297)
Increase (Decrease) in Stockholders' Equity
Net income	77,884			77,884
Translation adjustment and other, net of tax	17,836				17,836
Pension adjustment, net of tax	420				420
Cash flow hedges, net of tax	(6,109)					$ (6,109)
Stock-based compensation expense and deferred compensation plan ("DCP") expense	4,981		4,981
Common stock held in DCP (in shares)		(15,000)
Common stock held in DCP	0		87					(87)
Distribution/ diversification of common stock held in DCP (in shares)		1,000
Distribution/ diversification of common stock held in DCP	100
Allocated share based compensation expense	100
Shares issued from release of Restricted Stock Units (in shares)		64,000
Shares issued from release of Restricted Stock Units	(4,575)	$ 1	(4,576)
Change in redemption value of share awards in DCP	(833)
Issuance of Company’s common stock for compensation	$ 3,526
Common stock issues (in shares)	21,000
Common stock issued at $161.47 per share for stock bonus	$ 3,526
Retirement of common stock		$ (6)		100,765			(100,771)
Repurchase of common stock (in shares)		(147,000)
Repurchase of common stock, including excise tax	(25,105)						(25,105)
Cash dividends declared on common stock	(11,759)			(11,759)
Shares, Outstanding, Ending Balance at Mar. 31, 2025		41,802,000
Ending Balance at Mar. 31, 2025	1,861,714	$ 419	311,215	1,611,095	(34,626)		(25,105)	(1,284)
Shares, Outstanding, Beginning Balance at Dec. 31, 2025		41,255,000
Beginning Balance at Dec. 31, 2025	2,029,762	$ 419	324,846	1,843,289	(14,603)		(121,035)	(3,154)
Increase (Decrease) in Stockholders' Equity
Net income	88,216			88,216
Translation adjustment and other, net of tax	(14,483)				(14,483)
Pension adjustment, net of tax	(149)				(149)
Cash flow hedges, net of tax	12,153				12,153
Stock-based compensation expense and deferred compensation plan ("DCP") expense	8,257		8,257
Common stock held in DCP (in shares)		(36,000)
Common stock held in DCP	0		(2,178)					2,178
Distribution/ diversification of common stock held in DCP (in shares)		1,000
Distribution/ diversification of common stock held in DCP	252							252
Shares issued from release of Restricted Stock Units (in shares)		101,000
Shares issued from release of Restricted Stock Units	(6,275)	$ 1	(6,276)
Change in redemption value of share awards in DCP	193			193
Issuance of Company’s common stock for compensation	3,050	$ 0
Common stock issues (in shares)		19,000
Common stock issued at $161.47 per share for stock bonus	3,049		3,049
Retirement of common stock	0	$ (7)		(121,028)			(121,035)
Repurchase of common stock (in shares)		(269,000)
Repurchase of common stock, including excise tax	(50,313)						(50,313)
Cash dividends declared on common stock	(11,930)			(11,930)
Shares, Outstanding, Ending Balance at Mar. 31, 2026		41,071,000
Ending Balance at Mar. 31, 2026	$ 2,058,732	$ 413	$ 327,698	$ 1,798,740	$ (17,082)		$ (50,313)	$ (724)

Simpson Manufacturing Co., Inc. 10-Q