Century Aluminum CO (CENX) — SEC Filings

Overview

Century Aluminum CO (CENX) is a publicly traded company tracked on ReadTheFiling. The most recent enriched filing is a DEFA14A filed on Apr 24, 2026: Century Aluminum Co. filed a Definitive Proxy Statement (DEFA14A) on April 24, 2026. This filing is related to the solicitation of proxies from shareholders. The company's principal executive offices are located at 1 South Wacker Drive, Suite 1000, Chicago, IL 60606.

Sentiment Summary

Across 31 filings, the sentiment breakdown is: 2 bearish, 28 neutral, 1 mixed. The dominant filing sentiment for Century Aluminum CO is neutral.

Filing Type Overview

Century Aluminum CO (CENX) has filed 3 DEFA14A, 1 8-K/A, 6 10-Q, 11 8-K, 2 DEF 14A, 2 10-K, 2 SC 13D/A, 4 SC 13G/A with the SEC between Jan 2024 to Apr 2026.

Filings by Year

2026 · 2025 · 2024

Recent Filings (31)

• Century Aluminum Files Definitive Proxy Statement — DEFA14A · Apr 24, 2026 Risk: low
  Century Aluminum Co. filed a Definitive Proxy Statement (DEFA14A) on April 24, 2026. This filing is related to the solicitation of proxies from shareholders. Th
• Century Aluminum Files 8-K Amendment — 8-K/A · Nov 21, 2025 Risk: medium
  Century Aluminum Company filed an amendment (8-K/A) on November 21, 2025, to its report originally filed on November 6, 2025. This amendment pertains to the com
• Century Aluminum's Q3 Profit Plunges 68% Amid Derivative Losses — 10-Q · Nov 6, 2025 Risk: high
  CENTURY ALUMINUM CO reported a significant decline in net income attributable to Century stockholders for the three months ended September 30, 2025, falling to
• Century Aluminum Files 8-K — 8-K · Oct 22, 2025 Risk: low
  Century Aluminum Company filed an 8-K on October 22, 2025, reporting events that occurred on October 21, 2025. The filing is categorized under Regulation FD Dis
• Century Aluminum Narrows Q2 Loss to $10.5M Amidst Market Shifts — 10-Q · Aug 7, 2025 Risk: medium
  CENTURY ALUMINUM CO reported a net loss of $10.5 million for the second quarter of 2025, a significant improvement from the net loss of $40.2 million in the sec
• Century Aluminum Enters New Agreement, Terminates Another — 8-K · Jul 24, 2025 Risk: medium
  On July 22, 2025, Century Aluminum Company entered into a material definitive agreement and simultaneously terminated another. The company also created a direct
• Century Aluminum Files 8-K — 8-K · Jul 17, 2025 Risk: low
  Century Aluminum Company filed an 8-K on July 17, 2025, reporting an event on July 16, 2025. The filing is a current report under Section 13 or 15(d) of the Sec
• Century Aluminum Files 8-K on Shareholder Votes and Financials — 8-K · Jun 20, 2025 Risk: low
  Century Aluminum Company filed an 8-K on June 20, 2025, reporting on matters submitted to a vote of security holders and financial statements as of June 16, 202
• Century Aluminum Proxy: Executive Incentives Focus — DEFA14A · Jun 9, 2025 Risk: low
  Century Aluminum Company (CENX) filed a Definitive Proxy Statement (DEFA14A) on June 9, 2025, detailing its executive incentive programs. The filing emphasizes
• Century Aluminum Co. Files Q1 2025 10-Q — 10-Q · May 8, 2025 Risk: medium
  Century Aluminum Co. reported its first quarter 2025 results, ending March 31, 2025. The company's filing details financial performance and operational aspects,
• Century Aluminum Files 8-K on Financials — 8-K · May 7, 2025 Risk: low
  Century Aluminum Company filed an 8-K on May 7, 2025, reporting on its Results of Operations and Financial Condition, as well as Financial Statements and Exhibi
• Century Aluminum CEO Compensation Details Revealed — DEF 14A · Apr 25, 2025 Risk: low
  Century Aluminum Co. (CENX) filed its DEF 14A on April 25, 2025, detailing executive compensation for the fiscal year ending December 31, 2024. The filing inclu
• Century Aluminum Co. Announces Executive Compensation Changes — 8-K · Mar 21, 2025 Risk: low
  Century Aluminum Company announced on March 21, 2025, changes in its executive compensation arrangements. The filing also disclosed the departure of a director
• 10-K Filing — 10-K · Mar 3, 2025
• Century Aluminum Files 8-K on Operations and Financials — 8-K · Feb 20, 2025 Risk: low
  Century Aluminum Company filed an 8-K on February 20, 2025, to report on its results of operations and financial condition, as well as to file financial stateme
• Century Aluminum Elects New Directors and Officers — 8-K · Dec 11, 2024 Risk: medium
  Century Aluminum Company announced on December 5, 2024, changes in its executive and director roles. The company elected new directors and appointed new officer
• Century Aluminum Files Q3 2024 10-Q — 10-Q · Nov 4, 2024 Risk: low
  Century Aluminum Company filed its quarterly report on Form 10-Q for the period ending September 30, 2024. The company, incorporated in Delaware and headquarter
• Glencore AG Amends Century Aluminum Stake Filing — SC 13D/A · Aug 12, 2024 Risk: medium
  Glencore International AG, through its affiliate Glencore AG, has filed an amendment (No. 28) to its Schedule 13D concerning Century Aluminum Company. The filin
• Century Aluminum Co. Files Q2 2024 10-Q — 10-Q · Aug 8, 2024 Risk: medium
  Century Aluminum Co. filed its 10-Q for the period ending June 30, 2024. The filing details financial performance and operational updates for the second quarter
• SC 13G/A Filing — SC 13G/A · Jul 10, 2024
• Century Aluminum Files 8-K on Shareholder Votes and Financials — 8-K · Jun 7, 2024 Risk: low
  Century Aluminum Company filed an 8-K on June 7, 2024, reporting on matters submitted to a vote of security holders and financial statements. The earliest event
• Century Aluminum Proxy: Annual Meeting & Executive Pay Vote — DEFA14A · May 28, 2024 Risk: low
  Century Aluminum Company (CENX) is holding its 2024 Annual Meeting of Stockholders on June 3, 2024. The proxy statement details proposals including the election
• CENTURY ALUMINUM CO Files 10-Q for Q1 2024 — 10-Q · May 1, 2024 Risk:
  CENTURY ALUMINUM CO (CENX) filed a Quarterly Report (10-Q) with the SEC on May 1, 2024. Century Aluminum Co. reported financial results for the first quarter en
• CENTURY ALUMINUM CO Files Definitive Proxy Statement — DEF 14A · Apr 18, 2024 Risk: low
  CENTURY ALUMINUM CO (CENX) filed a Proxy Statement (DEF 14A) with the SEC on April 18, 2024. Filing type: DEF 14A (Definitive Proxy Statement). Reporting period
• Century Aluminum Files 8-K — 8-K · Mar 25, 2024 Risk: low
  Century Aluminum Company filed an 8-K on March 25, 2024, to report on Regulation FD disclosures and financial statements/exhibits. The filing does not contain s
• Century Aluminum Co. Files 2023 Annual Report — 10-K · Mar 15, 2024 Risk: medium
  Century Aluminum Co. filed its 2023 10-K on March 15, 2024, detailing its financial performance for the fiscal year ending December 31, 2023. The company, headq
• Century Aluminum Files 8-K on Operations and Financial Condition — 8-K · Feb 21, 2024 Risk: low
  Century Aluminum Company filed an 8-K on February 21, 2024, reporting on its results of operations and financial condition. The filing indicates that the compan
• Vanguard Trims Century Aluminum Stake to 7.96% — SC 13G/A · Feb 13, 2024 Risk: medium
  The Vanguard Group, a major investment firm, filed an amended SC 13G/A on February 13, 2024, disclosing its ownership in Century Aluminum Co. As of December 29,
• State Street Corp. Amends Century Aluminum Stake Filing — SC 13G/A · Jan 25, 2024
  State Street Corporation, a major financial institution, filed an amended SC 13G/A on January 25, 2024, indicating its ownership of Century Aluminum Co. common
• BlackRock Updates Century Aluminum Stake in SC 13G/A Filing — SC 13G/A · Jan 24, 2024
  BlackRock, Inc. filed an amended SC 13G/A on January 24, 2024, indicating its ownership of Century Aluminum Co. common stock as of December 31, 2023. This filin
• Glencore Updates Century Aluminum Stake in 13D/A Filing — SC 13D/A · Jan 5, 2024
  Glencore International AG filed an Amendment No. 27 to its Schedule 13D for Century Aluminum Company (CENX) on January 5, 2024, updating its beneficial ownershi

Risk Profile

Risk Assessment: Of CENX's 25 recent filings, 1 were flagged as high-risk, 9 as medium-risk, and 15 as low-risk. The overall risk profile suggests relatively low risk with generally favorable filings.

Financial Highlights

Key financial metrics from Century Aluminum CO's most recent 10-Q filing (Nov 6, 2025):

• Revenue: $1,894.2M
• Net Income: $40.0M
• EPS: $0.40
• Cash Position: $151.4M
• Operating Margin: 6.6%

Key Executives

• Peo1Member
• Peo2Member
• Steven Kalmin
• Matias Vega, Esq.
• Jesse Gary
• Michael Bless
• Gary

Industry Context

The aluminum industry is cyclical and sensitive to global economic conditions, energy prices, and trade policies. Century Aluminum operates in a competitive landscape with major global producers. Recent trends include a focus on decarbonization and sustainable production, which can influence operational costs and market demand.

Top Tags

amendment (5) · financials (5) · financial-reporting (4) · 8-K (4) · executive-compensation (4) · 10-Q (4) · aluminum (4) · proxy-statement (3) · Aluminum Production (3) · corporate-governance (3)

Key Numbers

• Net income attributable to Century stockholders (Q3 2025): $14.9M — Decreased from $47.3 million in Q3 2024, a 68.5% drop.
• Diluted EPS (Q3 2025): $0.15 — Decreased from $0.46 in Q3 2024.
• Total net sales (Q3 2025): $632.2M — Increased from $539.1 million in Q3 2024, a 17.3% increase.
• Net loss on forward and derivative contracts (Q3 2025): $30.2M — Increased significantly from $2.8 million loss in Q3 2024.
• Loss on early extinguishment of debt (Q3 2025): $6.2M — New expense not present in Q3 2024.
• Net income attributable to Century stockholders (9 months 2025): $40.0M — Decreased from $291.6 million in 9 months 2024, largely due to 2024 bargain purchase gain.
• Cash and cash equivalents (Sept 30, 2025): $151.4M — Increased from $32.9 million at Dec 31, 2024.
• Net cash provided by financing activities (9 months 2025): $84.6M — Shift from $4.9 million used in 9 months 2024.
• Glencore's beneficial ownership of common stock (Sept 30, 2025): 42.9% — Indicates significant related party influence and transactions.
• Proceeds from issuance of Senior Notes due 2032 (9 months 2025): $400.0M — Contributed to increased cash and financing activities.
• Net Loss Q2 2025: $10.5M — Improved from $40.2M loss in Q2 2024, showing a 73.8% reduction in loss.
• Net Loss H1 2025: $25.1M — Improved from $75.8M loss in H1 2024, indicating a 66.9% reduction in loss.
• Q2 Loss Reduction: 73.8% — Percentage decrease in net loss from Q2 2024 to Q2 2025.
• H1 Loss Reduction: 66.9% — Percentage decrease in net loss from H1 2024 to H1 2025.
• Reporting Period: 2025 Q1 — First quarter of 2025

Forward-Looking Statements

• {"claim":"Century Aluminum Co.'s stock price may experience downward pressure due to Vanguard's reduced stake.","entity":"Century Aluminum Co.","targetDate":"Q2 2024","confidence":"medium"}
• {"claim":"Other institutional investors might re-evaluate their positions in Century Aluminum Co. following Vanguard's reduction.","entity":"Institutional Investors","targetDate":"Q2 2024","confidence":"medium"}

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