144 0001631478 XXXXXXXX LIVE 0001988894 Amer Sports, Inc. 001-41943 SILTASAARENKATU 8-10 FL-00530 HELSINKI H9 00511 358 207 122 500 Haselden Stuart Officer CHIEF EXECUTIVE OFFICER ARC'TERYX EQUIPMENT Ordinary Shares Citigroup Global Markets, Inc.

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6511 216694.48 577540386 04/02/2026 NYSE Ordinary Shares 04/01/2026 Restricted Stock Award Vesting Amer Sports, Inc. N 11946 04/02/2026 Compensation Y Section 3D based on indictive market price of $33.2813. Shares are being sold to cover the vesting and settlement of equity awards which were granted under the Amer Sports, Inc. 2024 Omnibus Incentive Plan 04/02/2026 Conformed Signature On File