Place it in its market
Seven layers of its region's market — rates, credit, stress, liquidity, regime, breadth and sectors — with historical precedents. Public example: Apple and ASML.
See how Context works →On the price, the facts of the public record■Insider buy□Insider sell◆Adverse 8-K filing◇Significant stake declared (13D)●Results filed
With an account, also○dividends▲splits◌next earningswith an account
End-of-day prices provided by Twelve Data · One close per session; the series does not update during the trading day.
Latest on record
The most recent facts, as filed.
Up to three of the most recent, checkable facts already loaded on this page, each linked to its source.
- Aug 6, 2026Quarterly report · 10-QFiled by the company itself.Open the filing ↗
- Aug 6, 2026Material event · 8-KFiled by the company itself.Open the filing ↗
- Jun 17, 2026Material event · 8-KFiled by the company itself.Open the filing ↗
In numbers
What this profile holds, counted.
Closes · 1 year250
SEC filings on record1,49713 flagged findings
Reported transactions (Form 4)52since Dec 31, 2022 · and 4 other holdings
Corporate events (8-K)30since Apr 15, 2021
What the record says
Description, identity and filings, each with its source.
Every block cites its source. The colour of a finding marks its category — which document, who filed it — not how much it matters.
What the company does
Century Aluminum Company is a US-based producer of primary aluminum, with aluminum plants in Kentucky, South Carolina, and Iceland. It is the largest producer of primary aluminum in the United States. The company is a publicly held corporation listed on the NASDAQ. The headquarters is at One South Wacker in Chicago.
Source: Wikipedia (CC BY-SA 4.0) · copied on Sep 3, 2026 · may not reflect recent changes.
Regulatory history
Topics detected in its SEC reports, with the original excerpt.
Each topic is assigned by a classifier over the full filing; the excerpts show where it was detected and are not always enough to verify it. Open the filing to read it in full.
- 2026-05-07share offering or dilution eventrecentOpen filing ↗“…or affiliates; and (ix) effect a consolidation or merger. As of March 31, 2026, the total estimated fair value of the 2032 Notes…”
+1 more passage from the same document
- “…was $ 413.7 million . Although we use quoted market prices for identical debt instruments, the markets on which they trade are not…”
- 2026-05-07capital return (buybacks/dividends)recentOpen filing ↗“…in net cash used in financing activities during the three months ended March 31, 2026 compared to the three months ended March…”
+1 more passage from the same document
- “…in net cash used in financing activities during the three months ended March 31, 2026 compared to the three months ended March 31,…”
- 2026-03-03share offering or dilution eventrecentOpen filing ↗“…Convertible Notes were converted solely into shares of common stock at the beginning of the reporting period, unless the result…”
+1 more passage from the same document
- “…earnings per share. The capped call transactions may affect the value of our common stock. In connection with the issuance of our…”
- 2026-03-03capital return (buybacks/dividends)recentOpen filing ↗“…primarily due the early redemption of the 2028 Notes, the extinguishment of the Grundartangi casthouse facility, lower net borrowings…”
+1 more passage from the same document
- “…due the early redemption of the 2028 Notes, the extinguishment of the Grundartangi casthouse facility, lower net borrowings on…”
Original excerpts from SEC filings, untranslated. Not advice and not a prediction.
The 25 most recent filings (of 1,497)
Every SEC filing, newest first, with what it is. Below, each type with its own explanation.
- Oct 5, 26SCHEDULE 13G/A ↗Passive stake · BlackRock, Inc. · 10.5% · event on Sep 30, 26 · amendment
- Aug 7, 26SCHEDULE 13G ↗Passive stake · STATE STREET CORPORATION · 5.6% · event on Jun 30, 26
- Aug 6, 2610-Q ↗Quarterly report
- Aug 6, 268-K ↗Current report · Results
- Jul 27, 26SCHEDULE 13G/A ↗Passive stake · BlackRock, Inc. · 9.5% · event on Jun 30, 26 · amendment
- Jun 17, 268-K ↗Current report · Shareholder vote results
- Jun 9, 26Form 144 ↗Notice of proposed sale
- May 7, 2610-Q ↗Quarterly report
- May 7, 268-K ↗Current report · Results
- Apr 24, 26SCHEDULE 13G/A ↗Passive stake · BlackRock, Inc. · 8.2% · event on Mar 31, 26 · amendment
- Apr 24, 26DEFA14A ↗Shareholder meeting and votes
- Apr 24, 26DEF 14A ↗Shareholder meeting and votes
- Mar 27, 26Form 4 ↗Insider transaction
- Mar 26, 26SCHEDULE 13G/A ↗Passive stake · amendment
- Mar 25, 26Form 144 ↗Notice of proposed sale
- Mar 12, 26Form 144 ↗Notice of proposed sale
- Mar 12, 26UPLOAD ↗Correspondence with the SEC
1,497 filings on record, the oldest from May 8, 96.
Listing the 25 most recent filings of the 1,497 on record.
510362
- Mar 3, 26Past accounts declared unreliable and being restated8-K 4.02 ↗
- Feb 2, 26Completed an acquisition or disposal+3 more in the same filing8-K 2.01 ↗
- Nov 6, 25Completed an acquisition or disposal+1 more in the same filing8-K 2.01 ↗
- Jul 24, 25A material agreement was terminated+4 more in the same filing8-K 1.02 ↗
4 senior executive changes2023 – 2025show all 4hide
- Mar 21, 25A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
- Dec 11, 24A senior executive left or was appointed8-K 5.02 ↗
- Nov 4, 24A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
- Jun 9, 23A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
- May 5, 23Entered a material agreement+1 more in the same filing8-K 1.01 ↗
- Dec 12, 22Entered a material agreement+2 more in the same filing8-K 1.01 ↗
- Aug 1, 22A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
- Jun 16, 22Entered a material agreement+3 more in the same filing8-K 1.01 ↗
- Feb 9, 22Took on a new financial obligation+2 more in the same filing8-K 2.03 ↗
- Feb 4, 22A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
- Dec 27, 21Entered a material agreement+2 more in the same filing8-K 1.01 ↗
5 older filings not shown · The record reaches back to Sep 1, 04.
Stress disclosures older than the timeline above. They are individual events from the record, not a complete timeline: there may be more between them.
- Jul 31, 15Restructuring plan with committed costs+1 more in the same filing8-K 2.05 ↗
- Mar 2, 09Past accounts declared unreliable and being restated8-K 4.02 ↗
- Feb 19, 09Restructuring plan with committed costs8-K/A 2.05 ↗
- Feb 10, 09Restructuring plan with committed costs8-K 2.05 ↗
The full record holds 5 stress filings.
Corporate events are tracked from 2004-08-23, when the SEC renumbered 8-K items. Earlier filings use an incompatible numbering and are not classified here.
Schedule 13D: stake and stated purpose
Filed by holders above 5% of a share class who cannot use the short form. It includes the investor's stated purpose: read it before assuming they seek influence.
- Glencore International AG30.0%Mar 4, 26SCHEDULE 13D/A ↗3 co-filers on this document — the figure is the largest single stake, not their sum. · 1 earlier filing
Schedule 13G: short-form filing
The short form, for holders who meet specific requirements: institutional investors, passive investors without a control purpose, or exempt investors. Asset managers and index funds usually file it.
- BlackRock, Inc.10.5%Sep 30, 26SCHEDULE 13G/A ↗3 earlier filings
- The Vanguard Group7.4%Dec 31, 25SCHEDULE 13G/A ↗
- STATE STREET CORPORATION5.6%Jun 30, 26SCHEDULE 13G ↗
Structured 13D/G data starts 2023-12, when the SEC moved these filings to a machine-readable format. Earlier filings exist but are not parsed here.
- Mar 25, 26Sell$845KPeter A TrpkovskiEVP, CFO↗
- Mar 16, 26Sell$8.3MJesse E GaryPresident and CEO↗
- Mar 12, 26Sell$1.0MKenneth L CallowaySVP, Human Resources↗
- Mar 11, 26Sell$595KRobert F HoffmanSVP, IT and CAO↗
- Mar 4, 26Sell$326.8MGLENCORE INTERNATIONAL AG↗
- Mar 4, 26Sell$563KRobert F HoffmanSVP, IT and CAO↗
- Mar 3, 26Sell$156KMatt AboudSVP, Strategy & Business Dev't↗
- Mar 2, 26Sell$637KMatt AboudSVP, Strategy & Business Dev't↗
- Feb 27, 26Sell$1.2MAgust F HafbergSVP & Chief Commercial Officer↗
- Feb 25, 26Sell$2.3MGunnar GudlaugssonEVP - Global Operations↗
- Feb 23, 26Sell$3.3MJohn DeZeeEVP, GC and Secretary↗
- Jan 23, 26Sell$7.2MJesse E GaryPresident and CEO↗
Stock compensation, tax and giftsshow the 28 other transactionshide
Stock compensation, tax withholding, option exercises and gifts. They are listed separately and are not included in the purchase and sale totals. The type describes the transaction, not the filer's intent.
- Jun 15, 26Compensationamount n/aTamla A Olivier↗
- Jun 15, 26Compensationamount n/aJennifer Mary Bush↗
- Jun 15, 26Compensationamount n/aAndrew G Michelmore↗
- Jun 15, 26Tax$36KAndrew G Michelmore↗
- Jun 15, 26Compensationamount n/aERROL GLASSER↗
- Jun 15, 26Compensationamount n/aJarl Berntzen↗
- Feb 9, 26Tax$230KPeter A TrpkovskiEVP, CFO↗
- Jan 12, 26Giftamount n/aJesse E GaryPresident and CEO↗
- Jan 12, 26Giftamount n/aJesse E GaryPresident and CEO↗
- Jan 1, 26Compensationamount n/aMatt AboudSVP, Strategy & Business Dev't↗
- Jan 1, 26Compensationamount n/aKenneth L CallowaySVP, Human Resources↗
- Jan 1, 26Compensationamount n/aJohn DeZeeEVP, GC and Secretary↗
- Jan 1, 26Compensationamount n/aRobert F HoffmanSVP, IT and CAO↗
- Jan 1, 26Compensationamount n/aPeter A TrpkovskiEVP, CFO and Treasurer↗
- Jan 1, 26Compensationamount n/aAgust F HafbergSVP & Chief Commercial Officer↗
- Jan 1, 26Compensationamount n/aGunnar GudlaugssonEVP - Global Operations↗
- Jan 1, 26Compensationamount n/aJesse E GaryPresident and CEO↗
- Dec 31, 25Compensationamount n/aMatt AboudSVP, Strategy & Business Dev't↗
- Dec 31, 25Tax$646KMatt AboudSVP, Strategy & Business Dev't↗
- Dec 31, 25Tax$323KMatt AboudSVP, Strategy & Business Dev't↗
- Dec 31, 25Compensationamount n/aKenneth L CallowaySVP, Human Resources↗
- Dec 31, 25Tax$214KKenneth L CallowaySVP, Human Resources↗
- Dec 31, 25Tax$146KKenneth L CallowaySVP, Human Resources↗
- Dec 31, 25Compensationamount n/aJohn DeZeeEVP, GC and Secretary↗
- Dec 31, 25Tax$829KJohn DeZeeEVP, GC and Secretary↗
- Dec 31, 25Tax$469KJohn DeZeeEVP, GC and Secretary↗
- Dec 31, 25Compensationamount n/aRobert F HoffmanSVP, IT and CAO↗
- Dec 31, 25Tax$488KRobert F HoffmanSVP, IT and CAO↗
The full record holds 195 transactions and goes back to Sep 8, 22.
Its sector and its market
Century Aluminum Company among Materials companies
The profile shows what is on record. Context and Radar place the company among those of its sector and region.
Browse its neighbours
Other Materials companies
With an account you also get
- The four engines — growth, trend, risk and context — each with its word and its score.
- The risk band and the sector phase.
- The company's fundamentals and accounts.
- Watchlist: your list of companies, with the «since you follow it» figure.
The research continues
The profile tells the story. The market sets the scene.
From Century Aluminum Company, the path continues in the other areas. Each one is shown with its own example, named in its step.
See what deserves a closer look
Every morning Radar screens the covered companies through a lens and explains why each candidate made the list. Public example: the lists from Aug 11, 2026.
See how Radar works →Keep the why
Follow Century Aluminum Company in the Watchlist and review what changed since you added it: context, notices and filings. Written theses are coming soon. Public example: Apple.
See an example review →
Coverage
What sits behind this page.
Where each figure comes from and how far it reaches.
- Prices
- End-of-day closes provided by Twelve Data. One close per session; not real time. Closes adjusted for splits.
- Series quality
- 250 clean closes in the period.
- SEC records
- 1,497 documents on file, from May 8, 1996 to Oct 5, 2026.
- Company description
- Wikipedia, read on Sep 3, 2026.
- This page
- Generated on Oct 19, 2026; refreshed through the day.
Start at your own pace
Explore first. Go deeper with access.
Every company's public profile is open. The full reading — context, Radar, watchlist — is inside, in an invitation-only beta.
Compare plans →- No account
This profile for every company we cover: closing prices with the record's facts on the curve, the SEC file in plain language, insider trades included, and links to its sector and exchange.
- Pro
What matters today, with its reason, is free with an account. Pro adds, in the profile, each company's notices and their explanation and the analysis of its insiders; in Radar, all the lenses, which notice each candidate carries, filters by notice type and «no dilution», and the cycle cohort filter; and in Watchlist, more companies and notice changes with their reason.
- Pro+
Adds the Lab: test a hypothesis on comparable cohorts before reusing it; and bring your lenses to Radar.
Are the prices real time?
No. It is one close per session, from the provider and with the date shown on the profile; it does not update during the trading day.
Which SEC documents appear here?
Those filed with the SEC by the company, its insiders and its major shareholders, within our coverage: periodic reports (10-K, 10-Q, 20-F), material events (8-K), proposed sale notices (Form 144), insider transactions (Form 4) and stakes above 5% (13D/13G). Each links to the original on EDGAR.
Why does a European company show no SEC records?
It depends on the company: some European issuers file a 20-F or 6-K with the SEC and others don't. The profile shows whatever is on record; when there is nothing, it says so rather than guessing why. Europe does not yet have a common filing archive like EDGAR in the United States. The EU will open its own, ESAP, in July 2027 (managers' transactions arrive in January 2028), and we plan to add it once it is available.
Before forming a view on a company,
read what is on record.
One close per session. The record in plain language. Its sector and its market one link away. Your judgment when deciding.