Welcome to our dedicated page for Constellium Se SEC filings (Ticker: CSTM), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Constellium SE filings document the reporting framework for a France-incorporated aluminum products manufacturer whose ordinary shares trade on the New York Stock Exchange under CSTM. Form 8-K reports furnish quarterly and annual operating results, investor presentations, exhibits and other material-event disclosures tied to segment performance, cash flow, leverage and capital allocation.
Proxy materials cover annual meeting matters, shareholder voting, board governance and executive compensation disclosures, including pay-versus-performance data. The filing record also documents capital-structure and governance matters such as ordinary-share registration information and board-authorized share repurchase actions.
Constellium SE senior vice president Nicolas Brun reported an open-market sale of ordinary shares. On May 11, 2026, he sold 26,661 ordinary shares of Constellium at a weighted average price of $33.85 per share across multiple trades between $33.79 and $34.04. After this transaction, Brun directly holds 104,891 ordinary shares of Constellium.
Constellium SE executive Stephane Corre, President of Automotive Structures & Industry, sold 5,000 ordinary shares in an open-market transaction at a weighted average price of $33.52 per share on May 8, 2026. After this sale, he directly holds 62,313 ordinary shares.
Constellium SE filed a Form 144 notice for the proposed sale of 26,661 shares of Common Stock through J.P. Morgan Securities LLC on or about 05/11/2026 on the NYSE. The filing lists prior insider activity: 17,701 shares were sold on 03/09/2026 for $436,679.21. The notice also records equity awards issued on 05/25/2021 of 5,814 RSUs and 20,847 PSUs.
Stephane Corre submitted a Rule 144 notice covering proposed sales of Class A common stock and lists equity awards from prior grants. The filing itemizes RSU 1,500 (04/07/2023) and PSU 3,500 (04/01/2022) as securities to be sold and records recent open-market sales on specific dates.
Constellium SE director Michiel Brandjes sold ordinary shares in an open-market transaction. On the reported date, he sold 10,400 ordinary shares at a weighted-average price of $31.25 per share, with individual trade prices ranging from $31.00 to $33.00. Following this sale, he directly holds 41,600 ordinary shares.
Constellium SE’s EVP & CFO, Jack Q. Guo, completed an open-market sale of 25,201 ordinary shares of the company on May 5, 2026. The weighted average sale price was $32.62 per share, with individual trades executed between $32.62 and $32.68. After this transaction, he continues to directly hold 185,368 ordinary shares of Constellium, indicating he retained a substantial equity stake following the sale.
FMR LLC reports beneficial ownership of 6,961,767.76 Ordinary Shares of CSTM, representing 5.1% of the class. The filing (Schedule 13G/A) lists sole dispositive power for 6,961,767.76 shares and sole voting power of 6,945,866 shares. The filing is dated 05/05/2026.
CSTM affiliate filed a Form 144 reporting proposed sale of 41,717 shares. The filing names Guo Jack Q as the selling person and shows aggregate proceeds of $1,079,218.79. The securities include Performance Stock Units awarded on 08/05/2020, 05/25/2021, and 04/01/2022. The sale is reported for NYSE-listed common stock.
CONSTELLIUM SE executive Philippe Hoffmann, President, A&T, sold 50,000 ordinary shares in an open-market transaction. The weighted average sale price was $31.92 per share, with individual trades ranging from $31.77 to $32.16. After this sale, Hoffmann directly holds 144,153 ordinary shares of Constellium.