Century Aluminum Co (CENX) insider trading

{
  "status": "OK",
  "results": [
    {
      "tickers": [
        "CENX"
      ],
      "issuer_cik": "0000949157",
      "owner_cik": "0001980271",
      "accession_number": "0001628280-26-021790",
      "form_type": "4",
      "filing_date": "2026-03-27",
      "period_of_report": "2026-03-25",
      "issuer_name": "CENTURY ALUMINUM CO",
      "issuer_trading_symbol": "CENX",
      "owner_name": "Trpkovski Peter A",
      "is_director": false,
      "is_officer": true,
      "is_ten_percent_owner": false,
      "is_other": false,
      "officer_title": "EVP, CFO",
      "security_type": "non_derivative",
      "record_type": "transaction",
      "security_title": "Common Stock",
      "transaction_timeliness": "O",
      "aff_10b5_one": false,
      "transaction_date": "2026-03-25",
      "transaction_code": "S",
      "equity_swap_involved": false,
      "transaction_shares": 16739,
      "transaction_price_per_share": 50.51,
      "transaction_acquired_disposed": "D",
      "shares_owned_following_transaction": 64125,
      "transaction_value": 845486.89,
      "not_subject_to_section_16": false,
      "direct_or_indirect": "D",
      "footnotes": [
        {
          "id": "F1",
          "description": "The price reported above reflects the weighted average sale price for the shares which were sold in multiple transactions at prices ranging from $50.50 to $50.64, inclusive. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the specific number of shares and prices at which the transactions were effected."
        },
        {
          "id": "F2",
          "description": "Includes unvested RSUs granted to the Reporting Person under the Issuer's Long-Term Incentive Plans."
        }
      ]
    },
    {
      "tickers": [
        "CENX"
      ],
      "issuer_cik": "0000949157",
      "owner_cik": "0001568817",
      "accession_number": "0001628280-26-018929",
      "form_type": "4",
      "filing_date": "2026-03-17",
      "period_of_report": "2026-03-16",
      "issuer_name": "CENTURY ALUMINUM CO",
      "issuer_trading_symbol": "CENX",
      "owner_name": "Gary Jesse E",
      "is_director": true,
      "is_officer": true,
      "is_ten_percent_owner": false,
      "is_other": false,
      "officer_title": "President and CEO",
      "security_type": "non_derivative",
      "record_type": "transaction",
      "security_title": "Common Stock",
      "transaction_timeliness": "O",
      "aff_10b5_one": true,
      "transaction_date": "2026-03-16",
      "transaction_code": "S",
      "equity_swap_involved": false,
      "transaction_shares": 150000,
      "transaction_price_per_share": 55.47,
      "transaction_acquired_disposed": "D",
      "shares_owned_following_transaction": 142580,
      "transaction_value": 8320500,
      "not_subject_to_section_16": false,
      "direct_or_indirect": "I",
      "nature_of_ownership": "By Trust",
      "footnotes": [
        {
          "id": "F1",
          "description": "The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 20, 2025 (the 'Trading Plan'). There are no additional shares available for sale under the Trading Plan and, as such, the Trading Plan is now complete."
        },
        {
          "id": "F2",
          "description": "The price reported above reflects the weighted average sale price for the shares which were sold in multiple transactions at prices ranging from $54.08 to $56.80, inclusive. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the specific number of shares and prices at which the transactions were effected."
        },
        {
          "id": "F3",
          "description": "Shares held in a self-settled, revocable trust for which the Reporting Person serves as trustee."
        }
      ]
    }
  ]
}

// trimmed to 2 results

The response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.