Rockwool

Transaction in Own Shares • Mar 19, 2025

Company announcement for ROCKWOOL A/S Release no. 15 – 2025 to Nasdaq Copenhagen

19 March 2025

ROCKWOOL A/S – transactions in connection with share buy-back programme

As mentioned in announcement no. 07/2025, ROCKWOOL A/S has initiated a share buy-back programme which will run from 7 February 2025 until 5 February 2026. During this period, the Company will buy own shares for up to a maximum of 150 MEUR.

The programme is implemented in accordance with EU Commission Regulation No 596/2014 of 16 April 2014 and EU Commission Delegated Regulation No 2016/1052 of 8 March 2016, which together constitute the "Safe Harbour" regulation.

The following transactions have been executed during the period 12 – 18 March 2025:

Date	Number of B shares	Average purchase price B shares (DKK)	Aggregate amount, B shares (DKK)
[Accumulated, last	36,150		101,364,941
announcement]
12 March 2025	800	3,086.06	2,468,848
13 March 2025	900	3,112.29	2,801,061
14 March 2025	900	3,153.31	2,837,979
17 March 2025	900	3,208.24	2,887,416
18 March 2025	900	3,219.86	2,897,874
Accumulated under the programme (B shares)	40,550		115,258,119

With the transactions stated above, ROCKWOOL A/S owns 561,763 B shares corresponding to 2.60 percent of the Company's total share capital.

An overview showing the transaction data for the period 12 – 18 March 2025 is enclosed.

Further information: Kim Junge Andersen Senior Vice President, CFO ROCKWOOL A/S +45 46 55 80 15

ROCKWOOL A/S Hovedgaden 584, DK-2640 Hedehusene, Denmark T (+45) 46 56 03 00 E info@rockwool.com