Completion of share split

Core Viewpoint - ROCKWOOL A/S has completed a share split in a ratio of 1:10, resulting in a significant change in the nominal value of its shares [1][2] Group 1: Share Split Details - The share split was resolved at the Annual General Meeting held on 2 April 2025 [1] - Each existing share with a nominal value of 10 DKK has been divided into 10 shares with a nominal value of 1 DKK [1] - Following the split, the company's share capital is now 216,207,090 DKK, consisting of 216,207,090 shares [2] Group 2: Share Distribution - The new share distribution includes 98,178,390 A shares and 118,028,700 B shares [2]