Hoffman Robert F 4

What Happened
Robert F. Hoffman, Senior VP, IT and Chief Accounting Officer of Century Aluminum Co. (CENX), sold 10,529 shares in an open-market transaction on March 11, 2026. The weighted average sale price was $56.51 per share for total proceeds of $594,994. The individual trades occurred at prices ranging from $56.25 to $56.75 (see footnote F1).

Key Details

• Transaction date: March 11, 2026; filing date (Form 4): March 13, 2026 (within the typical two-business-day reporting window).
• Transaction type: Open-market sale (code S).
• Shares sold: 10,529; weighted average price: $56.51; price range: $56.25–$56.75; total proceeds: $594,994. (F1 explains weighted-average and availability of per-trade prices.)
• Shares owned after transaction: Not specified in the provided excerpt. Note F2 states reported holdings may include unvested RSUs under the issuer’s long-term incentive plans.
• F3 notes reporting by the 401(k) plan trustee on March 11, 2026. No 10b5‑1 plan, option exercise, gift, or tax-withholding notation is indicated in the excerpt.

Context
This was a sale of existing shares (not an option exercise or award vesting). Sales by insiders can be for many reasons and do not, by themselves, indicate company outlook; purchases typically carry more weight for signaling. If you want the exact per-trade breakdown or post-transaction holdings, the filer has indicated (F1) they will provide that detail to the SEC staff or security holders upon request.