Pension and Other Postretirement Benefits (Tables)

6 Months Ended

Jun. 30, 2025

Contributions to the Corporation’s employee benefit plans were as follows:


	Six Months Ended June 30,
	2025		2024
U.S. defined benefit pension plans	$	1,680	$	3,170
U.S. nonqualified defined benefit pension plans (e.g. payments)	$	384	$	384
Foreign defined benefit pension plans	$	193	$	176
Other postretirement benefits (e.g., net payments)	$	181	$	182
U.K. defined contribution pension plan	$	139	$	134
U.S. defined contribution plan	$	1,565	$	1,814

Net periodic pension and other postretirement benefit costs included the following components:


	Three Months Ended June 30,						Six Months Ended June 30,
U.S. Defined Benefit Pension Plans (a)	2025			2024			2025			2024
Service cost	$	2		$	10		$	9		$	20
Interest cost		2,223			2,328			4,472			4,657
Expected return on plan assets		(2,769	)		(3,401	)		(5,640	)		(6,802	)
Amortization of prior service cost		—			1			—			1
Amortization of actuarial (gain) loss		(55	)		46			87			91
Net benefit income	$	(599	)	$	(1,016	)	$	(1,072	)	$	(2,033	)

a) Includes the nonqualified defined benefit pension plans.


	Three Months Ended June 30,						Six Months Ended June 30,
Foreign Defined Benefit Pension Plans	2025			2024			2025			2024
Service cost	$	34		$	8		$	60		$	39
Interest cost		484			452			941			908
Expected return on plan assets		(556	)		(475	)		(1,081	)		(953	)
Amortization of prior service credit		(74	)		(70	)		(144	)		(141	)
Amortization of actuarial loss		208			181			405			361
Net benefit expense	$	96		$	96		$	181		$	214


	Three Months Ended June 30,						Six Months Ended June 30,
Other Postretirement Benefit Plans	2025			2024			2025			2024
Service cost	$	27		$	41		$	69		$	84
Interest cost		86			83			176			181
Amortization of prior service credit		(256	)		(256	)		(512	)		(512	)
Amortization of actuarial gain		(81	)		(76	)		(159	)		(157	)
Net benefit income	$	(224	)	$	(208	)	$	(426	)	$	(404	)

AMPCO PITTSBURGH CORP 10-Q