Trpkovski Peter A 4

What Happened
Peter Trpkovski, EVP and CFO of Century Aluminum Co. (CENX), had 4,240 shares withheld by the company to satisfy tax obligations related to the vesting of previously granted restricted stock units (RSUs). The withholding was recorded at $54.36 per share, totaling $230,486. This was a tax-withholding disposition rather than an open-market sale.

Key Details

• Transaction date and price: Feb 9, 2026 — 4,240 shares withheld at $54.36 per share (total $230,486).
• Transaction code: F (payment of exercise price or tax liability — tax withholding on vested RSUs).
• Shares owned after transaction: Not specified in this filing.
• Footnotes: F1 — shares withheld by the issuer to satisfy tax obligations in connection with RSUs granted Feb 9, 2023. F2 — reporting includes unvested RSUs granted under the issuer’s Long-Term Incentive Plans.
• Filing timeliness: No late filing indicated (Form 4 filed Feb 11, 2026, reporting the Feb 9, 2026 transaction).

Context
This was a routine tax-withholding event tied to RSU vesting (often called a “cashless” or share-withholding settlement), not an open-market sale that signals a trading decision by the insider. Such withholdings are common when equity awards vest and generally do not, by themselves, indicate the insider’s view on the company’s stock.