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The performance stock units that were settled resulted from the conversion of certain equity incentive awards previously granted by Holcim Ltd (\"Holcim\") and converted in connection with the consummation on June 23, 2025 of the distribution of all of the ordinary shares of Amrize by Holcim to holders of Holcim ordinary shares on a pro rata basis (the \"Spin-Off\"). Such performance stock units vested based on the performance of Holcim and Amrize for the period from January 1, 2023 through December 31, 2025."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 258 shares acquired under the Amrize Ltd 2025 Employee Stock Purchase Plan on December 31, 2025."}],"balance_after":22820,"source":{"system":"sec-edgar","filing":"0002035989-26-000024","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2069283/000203598926000024/primary_doc.xml","form_type":"4"}},{"id":1102891,"issuer":{"id":1392,"kind":"organization","name":"Amrize Ltd","symbol":"AMRZ"},"owners":[{"id":20020,"kind":"person","name":"Forrest Nollaig","position":1,"cik":"0002069283","reported_name":"Forrest Nollaig","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Mktg & Corp Affairs Off"}}],"security":"Ordinary Shares","published_at":"2025-06-24T19:01:29.000Z","date":"2025-06-23","kind":"other","planned":false,"acquired":true,"shares":11405,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On June 23, 2025, Holcim Ltd (Holcim) distributed 100% of the issued and outstanding ordinary shares of the Issuer to the shareholders of Holcim, with each Holcim shareholder receiving one ordinary share of the Issuer for every ordinary share of Holcim held by such holder as of the close of business on June 20, 2025 (the Distribution). The reported amount represents the number of ordinary shares of the Issuer that the reporting person received in the Distribution. Such acquisition was exempt from Section 16 of the Securities Exchange Act of 1934, as amended, pursuant to Rule 16a-9 thereunder."}],"balance_after":11405,"source":{"system":"sec-edgar","filing":"0002066486-25-000026","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2069283/000206648625000026/primary_doc.xml","form_type":"4"}}]}