Guo Jack Q. 4

What Happened
Jack Q. Guo, Executive Vice President and Chief Financial Officer of Constellium SE (CSTM), sold 25,201 shares of Constellium stock in open-market transactions on May 5, 2026. The reported weighted-average price was $32.62, generating gross proceeds of approximately $822,057. The filing notes the sale occurred in multiple transactions at prices ranging from $32.62 to $32.68.

Key Details

• Transaction date: May 5, 2026; Form 4 filed May 7, 2026 (two days after the trades).
• Quantity sold: 25,201 shares; Weighted-average price: $32.62; Price range: $32.62–$32.68.
• Gross proceeds: ≈ $822,057.
• Shares owned after transaction: Not specified in the provided filing summary.
• Footnote: Price is a weighted average reflecting multiple trades; the reporting person can provide a breakdown of shares sold at each separate price on request.
• Filing timeliness: Filed two days after the transaction (within the typical 2-business-day reporting window).

Context
This was a sale (disposition) by a senior executive. Sales by insiders can be for many reasons (liquidity, diversification, tax planning) and are generally less bullish signals than purchases. Retail investors should note the sale but avoid inferring motivation solely from this single transaction.