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 B  AB  JB*  OB  OE*  OE
 S  AS  JS*  OS  OS*  3
 JB
 JS
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Detailed Insider History for:
CENTURY ALUMINUM CO: CENX
Price: 1/2/26 52-Wk
High		 52-Wk
Low		 Mkt Cap (mm) Shrs Out (mm) 3-Mth Ave
Vol (m)		 Ind. Yield Short Int
% Float		 Inst. Owned Insider Owned
$40.94 $41.50 $13.05 $3,821 93 2,219 0.0% 14.3% 64.04% 39.50%
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#
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Insider Statistics
T N H M S
Filer Name
Insider Title
Trans Type
Dollar Value
Shares Traded
Trans Date From
Trans Date To
Trans Price From
Trans Price To
Total Holdings
Delta % Owned
Owned
Other Info
Input Date
1
    
 
GARY JESSE E
PR,CEO,DIR
JB
---
496,533
12/31/25
1/1/26
---
---
805,237
160.8
D
---
1/5/26 - 5:03:32 pm
2
    
 
GUDLAUGSSON GUNNAR
VP,OO
JB
---
98,418
12/31/25
1/1/26
---
---
226,598
76.8
D
---
1/5/26 - 5:00:48 pm
3
    
 
HAFBERG AGUST F
VP
JB
---
36,116
12/31/25
1/1/26
---
---
86,138
72.2
D
---
1/5/26 - 4:57:24 pm
4
    
 
TRPKOVSKI PETER A
VP,CFO,TR
JB
---
31,748
12/31/25
1/1/26
---
---
85,104
59.5
D
---
1/5/26 - 4:55:21 pm
5
    
 
HOFFMAN ROBERT F
VP,TO,CAO
JB
---
36,772
12/31/25
1/1/26
---
---
90,733
68.1
D
---
1/5/26 - 4:51:40 pm
6
    
 
DEZEE JOHN
VP,GC,SEC
JB
---
63,863
12/31/25
1/1/26
---
---
186,960
51.9
D
---
1/5/26 - 4:48:58 pm
7
    
 
CALLOWAY KENNETH L
VP,HR
JB
---
23,388
12/31/25
1/1/26
---
---
46,856
99.7
D
---
1/5/26 - 4:45:54 pm
8
    
 
ABOUD MATT
VP
JB
---
42,079
12/31/25
1/1/26
---
---
99,139
73.7
D
---
1/5/26 - 4:40:26 pm
9
    
 
GARY JESSE E
PR,CEO,DIR
JS
$10,611,590
270,842
---
12/31/25
---
$39.18
534,395
-33.6
D
---
1/5/26 - 5:03:32 pm
10
    
 
GUDLAUGSSON GUNNAR
VP,OO
JS
$2,461,640
62,829
---
12/31/25
---
$39.18
163,769
-27.7
D
---
1/5/26 - 5:00:48 pm
11
    
 
HAFBERG AGUST F
VP
JS
$918,105
23,433
---
12/31/25
---
$39.18
62,705
-27.2
D
---
1/5/26 - 4:57:24 pm
12
    
 
TRPKOVSKI PETER A
VP,CFO,TR
JS
$475,449
12,135
---
12/31/25
---
$39.18
71,616
-14.5
D
---
1/5/26 - 4:55:21 pm
13
    
 
HOFFMAN ROBERT F
VP,TO,CAO
JS
$732,000
18,683
---
12/31/25
---
$39.18
72,050
-20.6
D
---
1/5/26 - 4:51:40 pm
14
    
 
DEZEE JOHN
VP,GC,SEC
JS
$1,298,190
33,134
---
12/31/25
---
$39.18
153,826
-17.7
D
---
1/5/26 - 4:48:58 pm
15
    
 
CALLOWAY KENNETH L
VP,HR
JS
$360,143
9,192
---
12/31/25
---
$39.18
37,664
-19.6
D
---
1/5/26 - 4:45:54 pm
16
    
 
ABOUD MATT
VP
JS
$968,843
24,728
---
12/31/25
---
$39.18
74,411
-24.9
D
---
1/5/26 - 4:40:26 pm
17
1m
1
0%
9%
1
GLENCORE INTERNATIONAL AG
BO
JS*
$272,249,984
9,000,000
---
11/10/25
---
$30.25
18,500,000
-32.7
D
---
11/13/25 - 5:59:31 pm
18
    
 
GLENCORE INTERNATIONAL AG
BO
JB
---
4,948,591
---
11/10/25
---
---
17,505,948
39.4
I
---
11/13/25 - 5:59:31 pm
19
    
 
GLENCORE INTERNATIONAL AG
BO
JB
---
2,848
---
9/30/25
---
---
12,557,356
0.0
I
---
10/2/25 - 6:00:26 am
20
    
 
HAFBERG AGUST F
VP
S
$264,950
9,493
---
9/26/25
---
$27.91
55,260
-14.7
D
---
9/30/25 - 4:26:24 pm
21
    
 
CALLOWAY KENNETH L
VP,HR
S
$452,375
16,450
---
9/19/25
---
$27.50
28,706
-36.4
D
---
9/23/25 - 4:03:21 pm
22
    
 
ABOUD MATT
VP
S
$279,868
12,027
---
8/12/25
---
$23.27
62,589
-16.1
D
---
8/14/25 - 4:36:35 pm
23
    
 
GLENCORE INTERNATIONAL AG
BO
JB
---
16,477
---
6/30/25
---
---
12,554,508
0.1
I
---
7/2/25 - 8:23:27 am
24
    
 
GLASSER ERROL
DIR
JB
---
7,778
---
6/16/25
---
---
118,697
7.0
D
R
6/18/25 - 6:31:31 pm
25
    
 
OLIVIER TAMLA A
DIR
JB
---
7,778
---
6/16/25
---
---
29,673
35.5
D
R
6/18/25 - 6:28:23 pm
26
    
 
MICHELMORE ANDREW G
DIR
JS
$40,501
2,333
---
6/16/25
---
$17.36
89,089
-2.6
D
R
6/18/25 - 6:25:33 pm
27
    
 
MICHELMORE ANDREW G
DIR
JB
---
7,778
---
6/16/25
---
---
91,422
9.3
D
R
6/18/25 - 6:25:33 pm
28
    
 
BUSH JENNIFER MARY
DIR
JB
---
7,778
---
6/16/25
---
---
46,872
19.9
D
R
6/18/25 - 6:22:14 pm
29
    
 
BERNTZEN JARL
DIR
JB
---
7,778
---
6/16/25
---
---
208,951
3.9
D
R
6/18/25 - 6:09:41 pm
30
    
 
GLENCORE INTERNATIONAL AG
BO
JB
---
3,593
---
3/31/25
---
---
12,538,031
0.0
I
---
4/1/25 - 7:57:35 am
31
    
 
TRPKOVSKI PETER A
VP,CFO,TR
JB
---
12,455
---
3/21/25
---
---
65,491
23.5
D
---
3/25/25 - 6:48:38 pm
32
    
 
HOFFMAN ROBERT F
VP,TO,CAO
S
$101,200
5,000
---
3/20/25
---
$20.24
59,083
-7.8
D
---
3/24/25 - 5:29:12 pm
33
    
 
HOFFMAN ROBERT F
VP,TO,CAO
S
$49,975
2,500
---
3/14/25
---
$19.99
64,083
-3.8
D
---
3/18/25 - 6:10:22 pm
34
    
 
TRPKOVSKI PETER A
VP,FO,TR
JS
$84,124
4,501
---
2/7/25
---
$18.69
53,036
-7.8
D
---
2/10/25 - 5:35:39 pm
35
    
 
GARY JESSE E
PR,CEO,DIR
JS
---
127,216
---
1/28/25
---
---
366,147
-25.8
D
---
1/29/25 - 5:23:06 pm
36
    
 
GARY JESSE E
PR,CEO,DIR
JB
---
127,216
---
1/28/25
---
---
127,969
16,894.6
I
---
1/29/25 - 5:23:06 pm
37
    
 
HOFFMAN ROBERT F
VP,TO,CAO
JB
---
21,980
12/31/24
1/1/25
---
---
66,583
49.3
D
---
1/3/25 - 5:43:56 pm
38
    
 
GARY JESSE E
PR,CEO,DIR
JB
---
269,886
12/31/24
1/1/25
---
---
510,505
112.2
D
---
1/3/25 - 5:40:03 pm
39
    
 
GUDLAUGSSON GUNNAR
VP,OO
JB
---
59,781
12/31/24
1/1/25
---
---
143,804
71.1
D
---
1/3/25 - 5:35:56 pm
40
    
 
HAFBERG AGUST F
VP
JB
---
22,091
12/31/24
1/1/25
---
---
66,682
49.5
D
---
1/3/25 - 5:31:08 pm
41
    
 
DEZEE JOHN
VP,GC,SEC
JB
---
41,280
12/31/24
1/1/25
---
---
132,918
45.0
D
---
1/3/25 - 5:27:40 pm
42
    
 
CALLOWAY KENNETH L
VP,HR
JB
---
15,054
12/31/24
1/1/25
---
---
45,156
50.0
D
---
1/3/25 - 5:25:00 pm
43
    
 
ABOUD MATT
VP
JB
---
25,249
12/31/24
1/1/25
---
---
75,562
50.2
D
---
1/3/25 - 5:22:10 pm
44
    
 
TRPKOVSKI PETER A
VP,FO,TR
JB
---
10,670
12/31/24
1/1/25
---
---
57,537
22.8
D
---
1/3/25 - 5:17:52 pm
45
    
 
BIALEK GERALD C
CFO
JB
---
17,534
---
1/1/25
---
---
100,620
21.1
D
---
1/3/25 - 5:11:47 pm
46
    
 
HOFFMAN ROBERT F
VP,TO,CAO
JS
$132,150
7,253
---
12/31/24
---
$18.22
58,326
-11.1
D
---
1/3/25 - 5:43:56 pm
47
    
 
GARY JESSE E
PR,CEO,DIR
JS
$1,843,500
101,180
---
12/31/24
---
$18.22
409,325
-19.8
D
---
1/3/25 - 5:40:03 pm
48
    
 
GUDLAUGSSON GUNNAR
VP,OO
JS
$435,622
23,909
---
12/31/24
---
$18.22
119,222
-16.7
D
---
1/3/25 - 5:35:56 pm
49
    
 
HAFBERG AGUST F
VP
JS
$177,026
9,716
---
12/31/24
---
$18.22
56,966
-14.6
D
---
1/3/25 - 5:31:08 pm
50
    
 
DEZEE JOHN
VP,GC,SEC
JS
$186,664
10,245
---
12/31/24
---
$18.22
117,674
-8.0
D
---
1/3/25 - 5:27:40 pm
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