|4Jan 5, 4:45 PM ET

Calloway Kenneth L 4

4 · CENTURY ALUMINUM CO · Filed Jan 5, 2026

Insider Transaction Report

Form 4
Period: 2025-12-31
Calloway Kenneth L
SVP, Human Resources
Transactions
  • Award

    Common Stock

    2025-12-31+18,15046,856 total
  • Tax Payment

    Common Stock

    2025-12-31$39.18/sh5,469$214,27541,387 total
  • Tax Payment

    Common Stock

    2025-12-31$39.18/sh3,723$145,86737,664 total
  • Award

    Common Stock

    2026-01-01+5,23842,902 total
Footnotes (5)
  • [F1]Represents shares of common stock acquired by the Reporting Person upon the vesting of PSUs granted in connection with the Issuer's 2023-2025 Long-Term Incentive Plan under Rule 16b-3(d).
  • [F2]Shares withheld by the Issuer to satisfy tax obligations in connection with the vesting of PSUs granted to the Reporting Person.
  • [F3]Shares withheld by the Issuer to satisfy tax obligations in connection with the vesting of RSUs previously granted to the Reporting Person on January 1, 2023.
  • [F4]Represents RSUs granted to the Reporting Person in connection with the Issuer's 2026-2028 Long-Term Incentive Plan under Rule 16b-3(d), all of which will vest on December 31, 2028, subject to the Plan's terms and conditions.
  • [F5]Includes unvested RSUs granted to the Reporting Person under the Issuer's Long-Term Incentive Plans.

Documents

4 files
  • 4
    wk-form4_1767649551.xmlPrimary

    FORM 4

  • EX-24
  • GRAPHIC
    poa_section16xcalloway001.jpg
  • GRAPHIC
    poa_section16xcalloway002.jpg