X0508 4 2025-10-30 0 0002035989 Amrize Ltd AMRZ 0002068104 Jenisch Jan Philipp GRAFENAUWEG 8 ZUG V8 6300 SWITZERLAND 1 1 0 0 Chairman & CEO 0 Ordinary Shares 2025-10-30 4 P 0 55000 52.64 A 1505000 D Ordinary Shares 2025-10-30 4 P 0 55000 52.88 A 505000 I By spouse The shares were purchased in multiple transactions at prices ranging from CHF 41.90 to CHF 42.45, inclusive. This amount represents the CHF 42.05 weighted average price of such transactions, and such price was converted into US Dollars using the transaction date exchange rate of (USD 1.00 = CHF 0.7988). The reporting person undertakes to provide full information regarding the number of shares purchased at each separate price upon request of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer. The shares were purchased in multiple transactions at prices ranging from $52.28 to $53.11, inclusive. This amount represents the $52.88 weighted average price of such transactions. The reporting person undertakes to provide full information regarding the number of shares purchased at each separate price upon request of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer. Hans Weinburger, Attorney-in-Fact 2025-10-31