Total number of shares and voting rights in ROCKWOOL A/S

Company announcementfor ROCKWOOL A/SRelease no. 19 – 2026to Nasdaq Copenhagen         29 May 2026 Total number of shares and voting rights in ROCKWOOL A/S ROCKWOOL A/S (the “Company”) completed a capital reduction on 18 May 2026 pursuant to a resolution adopted at the Company's Annual General Meeting on 15 April 2026.