The components of net periodic pension, postretirement benefit and workers’ compensation costs, excluding the service cost for benefits earned, are included in “Net periodic benefit credit, excluding service cost” in the unaudited condensed consolidated statements of operations.

The Company sponsors a qualified pension plan. Annual contributions to the qualified plan are made in accordance with minimum funding standards. Funding decisions also consider certain funded status thresholds defined by the Pension Protection Act of 2006. As of September 30, 2026, the qualified plan was expected to be at or above the Pension Protection Act thresholds. During the three and nine months ended September 30, 2026, the Company contributed $0.7 million and $1.3 million to its qualified pension plan. The Company expects to contribute a total of $2.0 million to the qualified plan in 2026 to maintain these thresholds and meet minimum funding requirements.


	Three Months Ended September 30,				Nine Months Ended September 30,
	2026		2025		2026		2025
	(Dollars in millions)
Service cost for benefits earned	$	—	$	0.1	$	0.1	$	0.3
Interest cost on accumulated postretirement benefit obligation	1.3		1.9		4.6		5.8
Expected return on plan assets	—		(0.1)		(0.1)		(0.3)
Amortization of prior service credit	(14.3)		(10.2)		(20.0)		(30.6)
Net actuarial gain	(3.3)		—		(3.3)		—
Net periodic postretirement benefit credit	$	(16.3)	$	(8.3)	$	(18.7)	$	(24.8)

The Company has established a Voluntary Employees’ Beneficiary Association (VEBA) trust to pre-fund a portion of benefits for non-represented retirees. The Company does not expect to make any discretionary contributions to the VEBA trust in 2026 and plans to utilize a portion of VEBA assets to make certain benefit payments.

In July 2026, the Company announced changes to its postretirement health care benefit plan for non-represented employees and retirees. Effective December 31, 2026, the Company will no longer provide a medical reimbursement benefit to certain existing employees and retirees.

The changes triggered a remeasurement event that resulted in a mark-to-market gain of $3.3 million recorded to “Net mark-to-market adjustment on actuarially determined liabilities” in the accompanying unaudited condensed consolidated statement of operations during the three and nine months ended September 30, 2026, primarily due to changes in assumed benefit utilization, updated census data and increase in discount rate from 5.15% at December 31, 2025 to 5.50% at the remeasurement date. The impact of the plan changes reduced the Company’s accumulated postretirement benefit obligation by $22.9 million. The reduction was attributable to the elimination of the medical reimbursement benefit. The reduction in liability was recorded with an offsetting balance in “Accumulated other comprehensive income,” of which, $11.5 million was amortized during the three and nine months ended September 30, 2026. The remaining amount will be amortized over the remaining life of the plan of 0.25 years.