CSTM - SEC Form 4 insider transactions

SVP CPO Becker Marcus sold $250,900 worth of Ordinary shares (10,000 units at $25.09), decreasing direct ownership by 27% to 27,175 units (SEC Form 4)

SVP GC & Secretary Walters Stephen Charles was granted 5,834 units of Ordinary shares, increasing direct ownership by 30% to 25,068 units (SEC Form 4)

Director Weiler Wiebke was granted 625 units of Ordinary shares (SEC Form 4)

SVP PA, Comm & Sust Brun Nicolas was granted 4,376 units of Ordinary shares, increasing direct ownership by 3% to 131,552 units (SEC Form 4)

SVP & CHRO Jurkovic Philip Ryan was granted 10,210 units of Ordinary shares, increasing direct ownership by 5% to 220,933 units (SEC Form 4)

SVP Manuf Excellence & CTO Piquier Ludovic was granted 5,469 units of Ordinary shares, increasing direct ownership by 2% to 242,713 units (SEC Form 4)

SVP CPO Becker Marcus was granted 3,938 units of Ordinary shares, increasing direct ownership by 12% to 37,175 units (SEC Form 4)

CEO Joerg Ingrid was granted 31,358 units of Ordinary shares, increasing direct ownership by 8% to 409,448 units (SEC Form 4)

President, P&ARP Perkins Matthew B. was granted 10,210 units of Ordinary shares, increasing direct ownership by 44% to 33,212 units (SEC Form 4)

SVP CIO & CDO Schild Niklaus was granted 3,355 units of Ordinary shares, increasing direct ownership by 9% to 38,703 units (SEC Form 4)

President, A&T Hoffmann Philippe was granted 12,033 units of Ordinary shares, increasing direct ownership by 7% to 194,153 units (SEC Form 4)

President, AS&I Corre Stephane was granted 7,293 units of Ordinary shares, increasing direct ownership by 11% to 72,313 units (SEC Form 4)

EVP & CFO Guo Jack Q. was granted 19,690 units of Ordinary shares, increasing direct ownership by 10% to 210,569 units (SEC Form 4)

President, AS&I Corre Stephane sold $38,835 worth of Ordinary shares (1,500 units at $25.89), decreasing direct ownership by 2% to 65,020 units (SEC Form 4)

CEO Joerg Ingrid was granted 71,132 units of Ordinary shares and sold $119,364 worth of Ordinary shares (4,614 units at $25.87), increasing direct ownership by 21% to 378,090 units (SEC Form 4)

EVP & CFO Guo Jack Q. was granted 75,874 units of Ordinary shares and sold $1,079,219 worth of Ordinary shares (41,717 units at $25.87), increasing direct ownership by 22% to 190,879 units (SEC Form 4)

SVP & CHRO Jurkovic Philip Ryan was granted 59,276 units of Ordinary shares and sold $773,513 worth of Ordinary shares (29,900 units at $25.87), increasing direct ownership by 16% to 210,723 units (SEC Form 4)

SVP Manuf Excellence & CTO Piquier Ludovic was granted 30,350 units of Ordinary shares, increasing direct ownership by 15% to 237,244 units (SEC Form 4)

SVP CIO & CDO Schild Niklaus was granted 5,106 units of Ordinary shares, increasing direct ownership by 17% to 35,348 units (SEC Form 4)

SVP PA, Comm & Sust Brun Nicolas sold $436,684 worth of Ordinary shares (17,701 units at $24.67) and was granted 23,710 units of Ordinary shares, increasing direct ownership by 5% to 127,176 units (SEC Form 4)

President, A&T Hoffmann Philippe sold $2,115,700 worth of Ordinary shares (80,000 units at $26.45), decreasing direct ownership by 59% to 55,425 units (SEC Form 4)

President, AS&I Corre Stephane sold $74,070 worth of Ordinary shares (3,000 units at $24.69), decreasing direct ownership by 6% to 44,444 units (SEC Form 4)

Director Boccon-Gibod Isabelle sold $257,700 worth of Ordinary shares (10,000 units at $25.77), decreasing direct ownership by 30% to 23,000 units (SEC Form 4)

President, AS&I Corre Stephane sold $82,262 worth of Ordinary shares (3,200 units at $25.71), decreasing direct ownership by 6% to 47,444 units (SEC Form 4)

SVP CPO Becker Marcus sold $398,270 worth of Ordinary shares (15,570 units at $25.58), closing all direct ownership in the company (SEC Form 4)

SVP GC & Secretary Walters Stephen Charles sold $38,085 worth of Ordinary shares (1,500 units at $25.39), closing all direct ownership in the company (SEC Form 4)