X0508 4 2025-10-31 0 0002035989 Amrize Ltd AMRZ 0002069148 Brouwer Roald GRAFENAUWEG 8 ZUG V8 6300 SWITZERLAND 0 1 0 0 Chief Technology Officer 0 Ordinary Shares 2025-10-31 4 P 0 3000 51.78 A 8000 D Ordinary Shares 2025-10-31 4 P 0 1000 51.76 A 9000 D The purchase was made in Swiss Francs at a price of CHF 41.51 per share, and converted into US Dollars using the transaction date exchange rate of (USD 1.00 = CHF 0.8017). The purchase was made in Swiss Francs at a price of CHF 41.50 per share, and converted into US Dollars using the transaction date exchange rate of (USD 1.00 = CHF 0.8017). Hans Weinburger, Attorney-in-Fact 2025-11-04