Key facts
- This page summarizes Andrew G. Michelmore's Form 4 filing for CENTURY ALUMINUM CO (CENX).
- 2 reported transactions and 0 derivative rows are listed below.
- Accepted by SEC: 17 Jun 2026, 16:41.
Andrew G. Michelmore - 15 Jun 2026 Form 4 Insider Report for CENTURY ALUMINUM CO (CENX)
- Reporting relationship
- Director
- Issuer ticker
- CENX
- Reported as of
- 15 Jun 2026
- Net transaction value
- $0
- SEC form
- 4
- Accepted by SEC
- 17 Jun 2026, 16:41:59 UTC
- Prior SEC filing
- 18 Jun 2025
- Source filing
- View source filing
- Reporting owner signature
- /s/ John DeZee, as attorney in fact for Andrew Michelmore
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Key filing fact
Andrew G. Michelmore filed Form 4 for CENTURY ALUMINUM CO (CENX) on 17 Jun 2026.
Change
- Previous filing in this sequence was filed on 18 Jun 2025.
- Current net transaction value: $0.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001493775
Primary reporting owner
Michelmore Andrew G
- Relationship
- Director
- Address
- C/O CENTURY ALUMINUM COMPANY, 1 S. WACKER DRIVE, SUITE 1000, CHICAGO
- Signature
- /s/ John DeZee, as attorney in fact for Andrew Michelmore
- Signature date
- 17 Jun 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
CENX
transaction
Common Stock
Award
- Transaction value
- Shares
- +2,172
- Change %
- +2.4%
- Price
- $0.000000*
- Shares after
- 91,261
- Date
- 15 Jun 2026
- Ownership
- Direct
- Footnotes
- F1
CENX
transaction
Common Stock
Tax liability
- Transaction value
- Shares
- -652
- Change %
- -0.71%
- Price
- $54.55*
- Shares after
- 90,609
- Date
- 15 Jun 2026
- Ownership
- Direct
- Footnotes
- F2
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 2 footnotes
Footnote F1
Represents annual grant of restricted stock units ("RSUs"), all of which vested on the date of grant.
Footnote F2
Represents shares withheld by the Issuer upon vesting of the RSUs to satisfy tax obligations.