Robert F. Hoffman

CIK: 0001603836

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)4 (33.3%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)4 (33.3%)

Compensation grants

Other (G, F, J, C, D, …)4 (33.3%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

CENX

CENTURY ALUMINUM CO

Officer

Discretionary Trading P&L

Holdings

Transaction History (12 total)

CENX
CENTURY ALUMINUM CO
Mar 11, 2026
Sale(S)
Direct
10.5K shares at avg. $56.51$595K
CENX
CENTURY ALUMINUM CO
Mar 4, 2026
Sale(S)
Direct
10K shares at avg. $56.33$563K
CENX
CENTURY ALUMINUM CO
Jan 1, 2026
Award(A)
Direct
5.1K shares-
CENX
CENTURY ALUMINUM CO
Dec 31, 2025
Award(A)
Direct
31.7K shares-
CENX
CENTURY ALUMINUM CO
Dec 31, 2025
Tax Payment(F)
Direct
12.5K shares at avg. $39.18$488K
CENX
CENTURY ALUMINUM CO
Dec 31, 2025
Tax Payment(F)
Direct
6.2K shares at avg. $39.18$244K
CENX
CENTURY ALUMINUM CO
Mar 20, 2025
Sale(S)
Direct
5K shares at avg. $20.24$101K
CENX
CENTURY ALUMINUM CO
Mar 14, 2025
Sale(S)
Direct
2.5K shares at avg. $19.99$50K
CENX
CENTURY ALUMINUM CO
Jan 1, 2025
Award(A)
Direct
8.3K shares-
CENX
CENTURY ALUMINUM CO
Dec 31, 2024
Award(A)
Direct
13.7K shares-
CENX
CENTURY ALUMINUM CO
Dec 31, 2024
Tax Payment(F)
Direct
5.4K shares at avg. $18.22$98K
CENX
CENTURY ALUMINUM CO
Dec 31, 2024
Tax Payment(F)
Direct
1.9K shares at avg. $18.22$34K

		Type	Shares	Price		Ownership
Mar 11, 2026	CENX CENTURY ALUMINUM CO	Sale(S)	10,529	$56.51	$594,994	Direct
Mar 4, 2026	CENX CENTURY ALUMINUM CO	Sale(S)	10,000	$56.33	$563,300	Direct
Jan 1, 2026	CENX CENTURY ALUMINUM CO	Award(A)	5,122	-	$0	Direct
Dec 31, 2025	CENX CENTURY ALUMINUM CO	Award(A)	31,650	-	$0	Direct
Dec 31, 2025	CENX CENTURY ALUMINUM CO	Tax Payment(F)	12,455	$39.18	$487,987	Direct
Dec 31, 2025	CENX CENTURY ALUMINUM CO	Tax Payment(F)	6,228	$39.18	$244,013	Direct
Mar 20, 2025	CENX CENTURY ALUMINUM CO	Sale(S)	5,000	$20.24	$101,200	Direct
Mar 14, 2025	CENX CENTURY ALUMINUM CO	Sale(S)	2,500	$19.99	$49,975	Direct
Jan 1, 2025	CENX CENTURY ALUMINUM CO	Award(A)	8,257	-	$0	Direct
Dec 31, 2024	CENX CENTURY ALUMINUM CO	Award(A)	13,723	-	$0	Direct
Dec 31, 2024	CENX CENTURY ALUMINUM CO	Tax Payment(F)	5,401	$18.22	$98,406	Direct
Dec 31, 2024	CENX CENTURY ALUMINUM CO	Tax Payment(F)	1,852	$18.22	$33,743	Direct

1-12 of 12 transactions

About Hoffman Robert F

Hoffman Robert F (SEC CIK 0001603836) files insider reports with the SEC as SVP, IT and CAO of CENTURY ALUMINUM CO (CENX).

Signal8 holds 6 ownership filings by Hoffman Robert F, all Form 4s, filed between Jan 3, 2025 and Mar 13, 2026. Those filings report 12 transactions, from Dec 31, 2024 to Mar 11, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Hoffman Robert F's filings is in CHICAGO, IL.

Recent filings by Hoffman Robert F

Mar 11, 2026: Open-market sale of CENX shares (Form 4, code S).
Mar 4, 2026: Open-market sale of CENX shares (Form 4, code S).
Jan 1, 2026: Grant or award of CENX shares (Form 4, code A).
Dec 31, 2025: Grant or award of CENX shares (Form 4, code A).
Dec 31, 2025: Tax withholdings of CENX shares (2 lines, Form 4, code F).

Other insiders filing for CENTURY ALUMINUM CO (CENX)

Berntzen Jarl, Director
GLASSER ERROL, Director
Michelmore Andrew G, Director
Bush Jennifer Mary, Director
Olivier Tamla A, Director
Trpkovski Peter A, EVP, CFO

How to read Form 4 transaction codes