CENX Stock: Insider Activity, Filings & Research
Drillr aggregates AI research, SEC filings, earnings signals and alt-data for CENX. 11 published articles.
Insider Activity
Over the past 90 days, CENX insiders engaged in net selling of $10.8M across four open-market transactions with no offsetting purchases, yielding an insider sentiment score of 0/100. Notable sales included President and CEO Gary Jesse E ($8.3M on 2026-03-17), SVP of Human Resources Kenneth L Calloway ($1.0M on 2026-03-13), and EVP and CFO Peter A Trpkovski ($845.5K on 2026-03-27). The stock appreciated 30% during the period despite the insider selling activity, while institutional investors showed accumulation in their 13F filings.
Updated Jun 4, 2026 · based on SEC Form 4 filings · not investment advice
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Mar 27, 2026 | Trpkovski Peter Aofficer: EVP, CFO | Sell | 16,739 | $50.51 |
| Mar 17, 2026 | Gary Jesse Edirector, officer: President and CEO | Sell | 150,000 | $55.47 |
| Mar 13, 2026 | Calloway Kenneth Lofficer: SVP, Human Resources | Sell | 18,000 | $58.00 |
| Mar 13, 2026 | Hoffman Robert Fofficer: SVP, IT and CAO | Sell | 10,529 | $56.51 |
| Mar 6, 2026 | Hoffman Robert Fofficer: SVP, IT and CAO | Sell | 10,000 | $56.33 |
| Mar 4, 2026 | GLENCORE INTERNATIONAL AG10 percent owner | Sell | 6,315,245 | $51.75 |
| Mar 4, 2026 | Aboud Mattofficer: SVP, Strategy & Business Dev't | Sell | 2,971 | $52.67 |
| Mar 4, 2026 | Aboud Mattofficer: SVP, Strategy & Business Dev't | Sell | 12,126 | $52.50 |
| Feb 27, 2026 | Gudlaugsson Gunnarofficer: EVP - Global Operations | Sell | 43,000 | $54.10 |
| Feb 25, 2026 | DeZee Johnofficer: EVP, GC and Secretary | Sell | 66,000 | $50.72 |
| Feb 11, 2026 | Trpkovski Peter Aofficer: EVP, CFO | Tax | 4,240 | $54.36 |
| Jan 23, 2026 | Gary Jesse Edirector, officer: President and CEO | Sell | 150,000 | $48.19 |
| Jan 5, 2026 | Calloway Kenneth Lofficer: SVP, Human Resources | Tax | 3,723 | $39.18 |
| Jan 5, 2026 | Calloway Kenneth Lofficer: SVP, Human Resources | Grant | 18,150 | — |
| Jan 5, 2026 | Calloway Kenneth Lofficer: SVP, Human Resources | Grant | 5,238 | — |
Source: CENX SEC Form 4 filings, latest Mar 27, 2026. For informational purposes only — not investment advice.
Research
AA and CENX Jump 2%+ as Iran Airstrike Tightens Global Aluminum Supply
An airstrike on Iran's IRALCO smelter April 7, 2026, tightens global aluminum supply, boosting US producers Alcoa and Century Aluminum via higher LME prices and premiums. Both stocks rallied 2%+ that day, backed by strong FY2025 financials and low valuations. Bullish outlook as war risks favor domestic capacity.
AAIran Airstrike Squeezes Aluminum Supply — AA, CENX Among Top 5 Winners
Airstrike on Iran's IRALCO on April 7, 2026, tightens aluminum supply, favoring US producers CENX, AA, CSTM, KALU, and RIO with higher premiums and margins. CENX tops conviction on pure-play smelting and 14% revenue growth; all show strong TTM gains amid 71% EBITDA surges for leaders.
AAKALUCSTMQatar Alumina Disruption Hits Global Smelters — Pricing Impact and Winner Analysis
QatarEnergy's gas supply disruption has forced the Qatalum smelter to operate at ~60% capacity, removing approximately 235,000 metric tons of annualized aluminum production from global supply. Alcoa (AA) is best positioned as a vertically integrated beneficiary on both alumina pricing and aluminum supply tightness, while Century Aluminum (CENX) offers higher-beta upside but trades at stretched valuations with thin margins vulnerable to input cost spikes.
AANHYACHAlcoa vs Century Aluminum: Side-by-Side in a Supply-Disrupted Market
Alcoa dominates Century Aluminum on profitability (14.6% vs 6.0% EBITDA margin) and balance sheet strength (net cash vs 2.7x net debt/EBITDA), but Century's 203% one-year stock surge reflects the market pricing in tariff-driven upside and the transformative Mississippi smelter project. Alcoa is the quality play at 13.1x forward earnings; Century is the higher-beta policy bet.
AAHow do Alcoa and Century's cost curves compare as US smelter capacity ramps in 2026?
Alcoa's vertically integrated model delivers a 13.6% gross margin versus Century's 10.4%, with an even wider EBITDA margin gap of 14.6% vs 6.0%. Alcoa enters 2026 essentially debt-free with $1.6B in cash, while Century carries $548M in debt and faces massive capex for its Kentucky greenfield smelter. Alcoa offers better risk-adjusted exposure; Century is the higher-beta bet contingent on successful smelter execution.
AAWhich US aluminum smelter benefits more from tariff protection — Alcoa's integrated model or Century's pure-play?
Century Aluminum captures more tariff upside per revenue dollar due to its concentrated US smelting footprint and high Midwest Premium exposure, making it the higher-beta tariff play at 7.4x forward P/E. Alcoa's vertically integrated model delivers structurally superior margins (14.6% vs 5.6% EBITDA) and a fortress balance sheet with near-zero debt, offering better downside protection across commodity cycles.
AAHow much alumina price uplift does Alcoa capture from Qatar supply disruptions in Q1?
Alcoa enters Q1 2026 positioned to capture significant alumina price uplift from Qatar supply disruptions, with its vertically integrated refinery network of 9.7–9.9 million tons of annual production providing direct exposure. The Q1 2025 template — when elevated alumina prices drove EBITDA to $869M and EPS to $2.07 — demonstrates how each $50/ton alumina price move translates to roughly $500M in annualized EBITDA, creating an asymmetric setup against consensus expectations of $1.18 EPS.
AANHYCan Century's Mt. Holly restart reach full capacity on schedule given US power cost volatility?
Century Aluminum's Mt. Holly restart to full 230,000-tonne capacity targets end of June 2026, backed by an extended Santee Cooper power contract through 2031 at cost-of-service rates that insulates against the worst of US power volatility. With $135.6M in cash and Q1 FY2026 EBITDA guided at $215–235M, the $50M project appears well-funded, though operational execution and aluminum price risk remain the key variables to watch.
DUKSOWhat does Mt. Holly's 100% restart mean for US domestic aluminum self-sufficiency?
Century Aluminum's $50M restart of Mt. Holly to 100% capacity (~220,000+ tonnes/year) is on track for summer 2026, representing a ~10% increase in US primary aluminum production. With Q1 FY2026 adjusted EBITDA guided at $215–235M and a new greenfield smelter in the pipeline, the restart is a concrete step toward reducing US import dependence, though execution risk and aluminum price cyclicality remain key concerns.
AAACHWhich European aluminum buyers benefit most from Grundartangi's July 2026 ramp completion?
Century Aluminum's Grundartangi smelter in Iceland is set to return to full production by end of July 2026 after Q3 2025 transformer failures. European aluminum buyers — particularly automotive OEMs, packaging converters, and fabricators like Arconic — stand to benefit from restored low-carbon supply and moderating delivery premiums, while Kaiser Aluminum gains indirect tailwinds for its record 2026 outlook.
ARNCKALUHow much incremental aluminum capacity does Grundartangi's full restoration add to the global market?
Century Aluminum's Grundartangi smelter restoration by end of July 2026 adds an estimated 130,000–155,000 annualized tonnes back to global aluminum supply — roughly 0.2% of world output. While small in percentage terms, the incremental volume is meaningful in a structurally tight Western aluminum market and positions CENX for a significant EBITDA step-up in FY2026, with Q1 guided at $215–$235 million.
AANHY
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