Century Aluminum Company (CENX) SEC Filings & Earnings Calls

Equipment failures in Iceland caused $61.3M net exceptional charge, indicating operational risk at Grundartangi

“$61.3 million related to equipment failures in Iceland, net of tax” · word for word

Unfavorable raw material price realization partially offset margin gains, highlighting input cost sensitivity

“partially offset by unfavorable raw material price realization” · word for word

Grundartangi equipment failure production disruption

“In October 2025, our Grundartangi smelter was forced to temporarily cease production at one of its two potlines due to a failure of a transformer unit. As a result, production at the smelter has been temporarily reduced by approximately two-thirds.” · word for word

Dependence on tariff policy

“The MWP price has recently been at historically high levels and may change rapidly based on factors beyond our control, including changes in tariff policies, changes in supply in the U.S market, and other factors.” · word for word

New smelter project execution risk

“Construction of the project is expected to start by the end of 2026, subject to the completion of detailed engineering work, completion of negotiations with Public Service Company of Oklahoma on a competitive long-term power supply agreement and the negotiation of a definitive joint venture agreement with EGA.” · word for word

Iceland equipment failure and extreme winter weather impacted operations; insurance proceeds partially offset.

“Received insurance proceeds totaling $83 million to date related to Iceland equipment failure; emergency energy charges related to extreme winter weather at Mt. Holly.” · word for word

Grundartangi equipment failure production disruption

“In October 2025, our Grundartangi smelter was forced to temporarily cease production at one of its two potlines due to a failure of a transformer unit. As a result, production at the smelter has been temporarily reduced by approximately two-thirds.” · word for word

Power price volatility

“unfavorable power price realization of $35.7 million due to extreme winter weather in the United States in the current period” · word for word

Aluminum price volatility

“The LME and MWP prices have recently been at historically high levels and may change rapidly based on factors beyond our control, including changes in tariff policies, changes in supply in the U.S market, geopolitical events, and other factors.” · word for word

Restatement of prior financials

“the Company restated its (i) audited consolidated financial statements as of and for the years ended December 31, 2024 and 2023” · word for word

Glencore concentration risk

“we derived approximately 54.0% of our consolidated sales from Glencore.” · word for word

Commodity price volatility

“the substantial impact on the Company’s financial results of fluctuations in the price of aluminum” · word for word

Operational risks (equipment failure, hurricane)

“Iceland equipment failure $46.6 ... Jamalco hurricane impact $10.4” · word for word

Material weakness in internal controls over financial reporting expected.

“Company expects to report a material weakness in internal controls over financial reporting in connection with the restatement.” · word for word

Grundartangi Production Disruption

“production at the smelter has been temporarily reduced by approximately two-thirds” · word for word

Power Cost Volatility

“market-based electricity contract exposes us to price volatility”

Aluminum Price Sensitivity

“Our operating results are highly sensitive to changes in the LME price of primary aluminum” · word for word

Customer Concentration

“we derived approximately 54.0% of our consolidated net sales from Glencore” · word for word

New Smelter Project Risk

“There is no assurance that we and EGA will make a final investment decision to proceed with the joint venture” · word for word

Iceland equipment failure and Hurricane Melissa impact caused exceptional items.

“Fourth quarter results were impacted by $126.4 million of net exceptional items, in particular $30.9 million (net of tax) related to our Iceland equipment failure, $5.7 million related to the hurricane impact at Jamalco.” · word for word

Data center development risk – no operational involvement or capital commitment, but equity value depends on successful project execution

“Neither CAKY nor its affiliates will participate in the financing, construction, management or operation of the data center and will not have any obligations to contribute capital to Raylan Data” · word for word

Grundartangi production disruption

“In October 2025, our Grundartangi smelter was forced to temporarily idle production on one of its two potlines due to an electrical equipment failure. As a result, production at the smelter has been temporarily reduced by approximately two-thirds.” · word for word

DOE funding uncertainty

“The issuance of certain Executive Orders, including the Unleashing American Energy Executive Order on January 20, 2025, has required an immediate pause in the disbursement of funds appropriated through the Inflation Reduction Act pending an ongoing review period.” · word for word

Energy cost volatility

“In 2025, energy prices in the US and Europe have been slightly elevated due to increases in energy demand in both markets.” · word for word