Company: CENX
Filing Date: 2025-11-06
Form Type: 10-Q
Source: 0001628280-25-050200
Chunk: 43

Company: CENTURY ALUMINUM CO
Filing Date: 2025-11-06
Form: 10-Q
Item: Part I, Item 1
Chunk 43
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 3.4 10.6 10.1 Expected return on plan assets(3.3)(3.9)(11.2)(11.8)Amortization of prior service benefit0.1 0.1 0.2 0.2 Amortization of net loss0.9 1.4 3.8 4.4 Net periodic benefit cost$2.1 $1.7 $5.3 $4.9 Other Postretirement BenefitsThree months endedSeptember 30,Nine months endedSeptember 30,2025202420252024Service cost$— $— $0.1 $0.1 Interest cost1.2 1.0 3.1 2.9 Amortization of prior service cost— — — (0.1)Amortization of net loss0.4 0.2 0.7 0.5 Net periodic benefit cost$1.6 $1.2 $3.9 $3.4 

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Table of ContentsCENTURY ALUMINUM COMPANYCondensed Notes to the Consolidated Financial Statements (continued)(amounts in millions, except share and per share amounts)(Unaudited)

8.    InventoriesInventories consist of the following:September 30, 2025December 31, 2024Raw materials$170.4 $180.8 Work-in-process51.3 52.1 Finished goods60.6 74.6 Operating and other supplies274.4 231.5 Total inventories$556.7 $539.0 Inventories are stated at the lower of cost or Net Realizable Value ("NRV") using the first-in, first-out or the weighted average cost method.

9.    Fair Value MeasurementsWe measure and classify certain of our assets and liabilities at fair value in accordance with the hierarchy as defined by the Fair Value Measurment Topic of the FASB ASC. The fair value hierarchy provides transparency regarding the inputs we use to measure fair value. We categorize each fair value measurement in its entirety into the following three levels, based on the lowest level input that is significant to the entire measurement:•Level 1 Inputs - quoted prices (unadjusted) in active markets for identical assets or liabilities that we can access at the measurement date.•Level 2 Inputs