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Century Aluminum Co

CENX
Exchange
Nasdaq
Industry
Primary Production of Aluminum
SEC CIK
0000949157

No open-market purchases or sales by Century Aluminum Co insiders were filed in the last 90 days; 416 institutions reported holding it in 13F filings for Q2 2026, worth $5.04B in total; no superinvestor holds it.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by Century Aluminum Co insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
0 filings
Open-market sells
0 filings
Insiders trading
0
Net value
$0
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for Century Aluminum Co, current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for Century Aluminum Co
NameTitleLast reported holdingLast filingFilings, past year
Glasser ErrolDirector120,869Jun 17, 20261
Berntzen JarlDirector211,123Jun 17, 20261
Michelmore Andrew GDirector90,609Jun 17, 20261
Bush Jennifer MaryDirector49,044Jun 17, 20261
Olivier Tamla ADirector31,845Jun 17, 20261
Trpkovski Peter AEVP, CFO64,125Mar 27, 20263
Gary Jesse EPresident and CEO142,580IndirectMar 17, 20263
Hoffman Robert FSVP, IT and CAO56,643Mar 13, 20263
Calloway Kenneth LSVP, Human Resources24,902Mar 13, 20262
Glencore International AG10% Owner12,184,755Mar 4, 20263
Glencore AG10% Owner12,184,755Mar 4, 20263
Glencore plc10% Owner12,184,755Mar 4, 20263
Aboud MattSVP, Strategy & Business Dev't64,843Mar 4, 20262
Hafberg Agust FSVP & Chief Commercial Officer45,059Mar 3, 20263
Gudlaugsson GunnarEVP - Global Operations136,393Feb 27, 20262
DeZee JohnEVP, GC and Secretary97,647Feb 25, 20262
Bialek Gerald CChief Financial Officer100,620Jan 3, 20250
Harrison MichelleSr. VP Finance & Treasurer80,947Jan 4, 20230
Ryfold Trust10% Owner0IndirectDec 16, 20220
Givolon Ltd10% Owner0IndirectDec 16, 20220
Ryfold Ltd10% Owner0IndirectDec 16, 20220
Ocorian Ltd10% Owner0IndirectDec 16, 20220
Conti Craig CEVP & Chief Financial Officer117,018Mar 1, 20220

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Mar 27, 2026 (view filing)Mar 252 daysTrpkovski Peter AEVP, CFOSSale−16.7K$50.51−$845.5K−20.7%64.1K after
Mar 17, 2026 (view filing)Mar 161 dayGary Jesse EPresident and CEOSSale−150.0K$55.47−$8.32M−51.3%142.6K after10b5-1
Mar 13, 2026 (view filing)Mar 121 dayCalloway Kenneth LSVP, Human ResourcesSSale−18.0K$58.00−$1.04M−42.0%24.9K after
Mar 13, 2026 (view filing)Mar 112 daysHoffman Robert FSVP, IT and CAOSSale−10.5K$56.51−$595.0K−15.7%56.6K after
Mar 6, 2026 (view filing)Mar 42 daysHoffman Robert FSVP, IT and CAOSSale−10.0K$56.33−$563.3K−13.0%67.2K after
Mar 4, 2026 (view filing)4:53 PM ETMar 4Same dayGlencore International AG and 2 others10% OwnerSSale−6.32M$51.75−$326.8M−34.1%12.2M after
Mar 4, 2026 (view filing)Mar 2-32 daysAboud MattSVP, Strategy & Business Dev'tSSale−15.1K$52.53−$793.1K−18.9%64.8K after2 lots
Mar 3, 2026 (view filing)Feb 274 daysHafberg Agust FSVP & Chief Commercial OfficerSSale−22.9K$51.24−$1.17M−33.7%45.1K after
Feb 27, 2026 (view filing)Feb 252 daysGudlaugsson GunnarEVP - Global OperationsSSale−43.0K$54.10−$2.33M−24.0%136.4K after
Feb 25, 2026 (view filing)Feb 232 daysDeZee JohnEVP, GC and SecretarySSale−66.0K$50.72−$3.35M−40.3%97.6K after
Jan 23, 2026 (view filing)Jan 23Same dayGary Jesse EPresident and CEOSSale−150.0K$48.19−$7.23M−33.9%292.6K after10b5-1
Nov 13, 2025 (view filing)5:59 PM ETNov 103 daysGlencore International AG and 2 others10% OwnerSSale−9.00M$30.25−$272.3M−32.7%18.5M after
Sep 30, 2025 (view filing)Sep 264 daysHafberg Agust FSVP & Chief Commercial OfficerSSale−9.49K$27.91−$264.9K−14.7%55.3K after
Sep 23, 2025 (view filing)Sep 194 daysCalloway Kenneth LSVP, Human ResourcesSSale−16.4K$27.50−$452.4K−36.4%28.7K after
Aug 14, 2025 (view filing)Aug 122 daysAboud MattSVP, Strategy & Business Dev'tSSale−12.0K$23.27−$279.9K−16.1%62.6K after
Mar 24, 2025 (view filing)Mar 204 daysHoffman Robert FSVP, IT and CAOSSale−5.00K$20.24−$101.2K−7.8%59.1K after
Mar 18, 2025 (view filing)Mar 144 daysHoffman Robert FSVP, IT and CAOSSale−2.50K$19.99−$50.0K−3.8%64.1K after
Dec 30, 2024 (view filing)Dec 26-274 daysGary Jesse EPresident and CEOSSale−79.2K$18.66−$1.48M−99.1%753 after2 lots
Dec 9, 2024 (view filing)Dec 54 daysGudlaugsson GunnarEVP - Global OperationsSSale−20.0K$23.85−$477.0K−15.6%107.9K after
Jun 28, 2024 (view filing)Jun 262 daysGary Jesse EPresident and CEOSSale−60.0K$16.21−$972.6K−49.0%62.4K after
Mar 6, 2024 (view filing)Mar 42 daysAboud MattSVP, Strategy & Business Dev'tSSale−3.77K$10.61−$40.0K−6.0%59.2K after
Jan 2, 2024 (view filing)Dec 28, 20235 daysTrpkovski Peter ASVP, Finance and TreasurerSSale−13.9K$12.32−$171.3K−24.9%42.0K after
Dec 28, 2023 (view filing)Dec 26-272 daysGary Jesse EPresident and CEOSSale−138.2K$12.59−$1.74M−64.4%76.4K after2 lots
Dec 22, 2023 (view filing)Dec 20-212 daysHoffman Robert FVP, IT and CAOSSale−12.0K$12.06−$144.7K−23.7%38.6K after2 lots
May 15, 2023 (view filing)May 114 daysAboud MattSVP, Strategy & Business Dev'tPPurchase+18.0K$7.25+$130.5K+62.8%46.7K after
Aug 16, 2022 (view filing)Aug 12-154 daysGary Jesse EPresident and CEOSSale−99.6K$9.33−$929.2K−60.7%64.4K after2 lots
Mar 22, 2022 (view filing)Mar 211 dayDeZee JohnEVP and General CounselSSale−15.3K$27.64−$422.5K−25.2%45.5K after
Mar 8, 2022 (view filing)Mar 44 daysHoffman Robert FSee RemarksSSale−3.48K$29.19−$101.6K−9.7%32.4K after
Mar 1, 2022 (view filing)Mar 1Same dayConti Craig CEVP & Chief Financial OfficerSSale−12.9K$25.69−$331.9K−9.9%117.0K after
Mar 1, 2022 (view filing)Feb 281 dayHarrison MichelleSr. VP Finance & TreasurerSSale−16.3K$23.22−$378.1K−19.8%66.0K after