Century Aluminum Co (CENX) Insider Ownership

Historic Insider Ownership Trends

As of April 17, 2026, the three largest insider holders of CENX are Ag Glencore (TenPercentOwner, 11.70Mn shares), Jesse E Gary (President And Ceo, 277.23K shares), Jarl Berntzen (Director, 208.95K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Ag Glencore - 11,701,321 0 30 Sep, 2022
Jesse E Gary President And Ceo 277,227 0 23 Jan, 2026
Jarl Berntzen - 208,951 0 18 Jun, 2025
Jesse E Gary President And Ceo 0 142,580 17 Mar, 2026
Gunnar Gudlaugsson Evp Global Operations 136,393 0 27 Feb, 2026
Errol Glasser - 118,697 0 18 Jun, 2025
Craig C Conti Evp Chief Financial Officer 117,018 0 01 Mar, 2022
Gerald C Bialek Chief Financial Officer 100,620 0 03 Jan, 2025
John Dezee Evp, Gc And Secretary 97,647 0 25 Feb, 2026
Andrew G Michelmore - 89,089 0 18 Jun, 2025
Michelle Harrison Sr. Vp Finance Treasurer 80,947 0 04 Jan, 2023
Matt Aboud Svp, Strategy Business Dev'T 64,843 0 04 Mar, 2026
Peter A Trpkovski Evp, Cfo 64,125 0 27 Mar, 2026
Robert F Hoffman Svp, It And Cao 56,643 0 13 Mar, 2026
Jennifer Mary Bush - 46,872 0 18 Jun, 2025
Agust F Hafberg Svp Chief Commercial Officer 45,059 0 03 Mar, 2026
Tamla A Olivier - 29,673 0 18 Jun, 2025
Kenneth L Calloway Svp, Human Resources 24,902 0 13 Mar, 2026

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
25 Mar, 2026 Peter A Trpkovski Common Stock D 16,739 $50.51 64,125 D S
16 Mar, 2026 Jesse E Gary Common Stock D 150,000 $55.47 142,580 I S
11 Mar, 2026 Robert F Hoffman Common Stock D 10,529 $56.51 56,643 D S
12 Mar, 2026 Kenneth L Calloway Common Stock D 18,000 $58.00 24,902 D S
04 Mar, 2026 Robert F Hoffman Common Stock D 10,000 $56.33 67,172 D S
02 Mar, 2026 Matt Aboud Common Stock D 12,126 $52.50 67,814 D S
03 Mar, 2026 Matt Aboud Common Stock D 2,971 $52.67 64,843 D S
27 Feb, 2026 Agust F Hafberg Common Stock D 22,884 $51.24 45,059 D S
25 Feb, 2026 Gunnar Gudlaugsson Common Stock D 43,000 $54.10 136,393 D S
23 Feb, 2026 John Dezee Common Stock D 66,000 $50.72 97,647 D S
09 Feb, 2026 Peter A Trpkovski Common Stock D 4,240 $54.36 80,864 D F
12 Jan, 2026 Jesse E Gary Common Stock D 314,611 $0.00 277,227 D G
12 Jan, 2026 Jesse E Gary Common Stock A 314,611 $0.00 442,580 I G
23 Jan, 2026 Jesse E Gary Common Stock D 150,000 $48.19 292,580 I S
31 Dec, 2025 Gunnar Gudlaugsson Common Stock A 82,794 $0.00 226,598 D A
31 Dec, 2025 Jesse E Gary Common Stock A 439,090 $0.00 805,237 D A
31 Dec, 2025 Matt Aboud Common Stock A 36,550 $0.00 99,139 D A
31 Dec, 2025 Peter A Trpkovski Common Stock A 18,260 $0.00 83,751 D A
31 Dec, 2025 Kenneth L Calloway Common Stock A 18,150 $0.00 46,856 D A
31 Dec, 2025 Agust F Hafberg Common Stock A 30,878 $0.00 86,138 D A