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Robust 2025 performance in a volatile and challenged market

Annual Report for 2025for ROCKWOOL A/SRelease no. 08 – 2026to Nasdaq Copenhagen 4 February 2026 Robust 2025 performance in a volatile and challenged marketHighlights On 13 January 2026, ROCKWOOL effectively lost control of the Russian business. Consequently, a loss of 392 MEUR from value adjustment related to the Russian business was recognised in 2025.Revenue in 2025 reached 3,877 MEUR, an increase of 1.1 percent in local currencies. 2024 acquisitions accounted for 1.2 percent. In Q4 2025, reve

Rockwool A/s Class AFebruary 4, 20263
Robust 2025 performance in a volatile and challenged market

About this update from Rockwool A/s Class A

Annual Report for 2025 for ROCKWOOL A/S Release no. 08 – 2026 to Nasdaq Copenhagen 4 February 2026 Robust 2025 performance in a volatile and challenged market Highlights Outlook 2026 CEO comment Commeting on the Group's performance, CEO Jes Munk Hansen says: “Looking back on 2025, ROCKWOOL delivered a robust performance even though the broader economic and political environment was challenging. Our colleagues stayed focused on strengthening customer relationships, managing costs and pricing, and pushing ahead with long-term investments in capacity and decarbonisation. It’s also significant to note that we gained market share in the all-important Central Europe and North America regions, and that we will continue investing heavily in capacity expansion and electrification in 2026.  Let me thank our customers for their continued partnership and our colleagues for all the good work. We look forward to the year ahead”. Further information: Kim Junge Andersen, Chief Financial Officer ROCKWOOL A/S +45 46 56 03 00 Conversion of A shares to B shares: Shareholders may from 4 February 2026 until 18 February 2026 request conversion of A shares to B shares. For further information please refer to https://www.rockwool.com/group/about-us/investors/conversion-shares/ Earnings call: ROCKWOOL Group will host an earnings call on 5 February 2026 at 11:00 CET. The call will be transmitted live on www.rockwool.com . Attachments

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