Century Aluminum Ownership & Insider Activity

Century Aluminum (CENX) institutional and insider ownership, recent insider transactions and ownership breakdown.

Insiders own 3.4% of shares outstanding. Institutional investors hold 46.4%.

Shares Outstanding

98.993M

Shares Float

68.707M

Insider Shares Owned

3.337M

Insider % Owned

3.4%

Institutional Shares Held

45.959M

Institutional % Held

46.4%

Ownership Breakdown

Net Insider Activity by Month

Century Aluminum Insider Transactions (Last 6 Months)

Date	Insider	Title	Type	Shares	Price	Value
Mar 25, 2026	Peter A Trpkovski	EVP, CFO	SELL	16.739K	$50.51	$845K
Mar 16, 2026	Jesse E Gary	PRESIDENT AND CEO	SELL	150.000K	$55.47	$8.3M
Mar 12, 2026	Kenneth L Calloway	SVP, HUMAN RESOURCES	SELL	18.000K	$58.00	$1.0M
Mar 11, 2026	Robert F Hoffman	SVP, IT AND CAO	SELL	10.529K	$56.51	$595K
Mar 4, 2026	Robert F Hoffman	SVP, IT AND CAO	SELL	10.000K	$56.33	$563K
Mar 4, 2026	GLENCORE INTERNATIONAL AG, Glencore AG, Glencore plc	10% OWNER	SELL	6.315M	$51.75	$326.8M
Mar 2, 2026	Matt Aboud	SVP, STRATEGY & BUSINESS DEV'T	SELL	15.097K	$52.53	$793K
Feb 27, 2026	Agust F Hafberg	SVP & CHIEF COMMERCIAL OFFICER	SELL	22.884K	$51.24	$1.2M
Feb 25, 2026	Gunnar Gudlaugsson	EVP - GLOBAL OPERATIONS	SELL	43.000K	$54.10	$2.3M
Feb 23, 2026	John DeZee	EVP, GC AND SECRETARY	SELL	66.000K	$50.72	$3.3M