Insider at

04

Insider transactions

05
1 buys (P) 5 sells (S) Net: $-522,977 + 1 non-open-market transaction below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

1 other filing hidden
DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
May 8, 2026 CSTM S 5,000 $33.52 $167,600 62,313 Direct -7.43% Disposed -27.2% (price as of 2026-10-02)
May 1, 2026 CSTM S 5,000 $32.04 $160,200 67,313 Direct -6.91% Disposed -23.8% (price as of 2026-10-02)
March 10, 2026 CSTM S 1,500 $25.89 $38,835 65,020 Direct -2.25% Disposed -5.8% (price as of 2026-10-02)
March 9, 2026 CSTM P 8,026 · · 66,520 Direct +13.72% Acquired (price as of 2026-10-02)
Feb. 27, 2026 CSTM S 3,000 $24.69 $74,070 44,444 Direct -6.32% Disposed -1.2% (price as of 2026-10-02)
Feb. 25, 2026 CSTM S 3,200 $25.71 $82,272 47,444 Direct -6.32% Disposed -5.1% (price as of 2026-10-02)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Initial ownership (Form 3) 2 holdings

07

Securities held when first becoming an insider, per SEC Form 3.

DateTickerSecuritySharesOwnership
March 11, 2026 CSTM Ordinary shares · Direct
Jan. 2, 2026 CSTM Ordinary shares 50,644 Direct