Rockwool

Transaction in Own Shares • May 8, 2024

Company announcement for ROCKWOOL A/S Release no. 22 – 2024 to Nasdaq Copenhagen

8 May 2024

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

As mentioned in announcement no. 02/2024, ROCKWOOL A/S has initiated a share buy-back programme which will run from 8 February 2024 until 7 February 2025. During this period, the Company will buy own shares for up to a maximum of 160 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 1 – 7 May 2024:

Date	Number of B shares	Average purchase price B shares (DKK)	Aggregate amount, B shares (DKK)
[Accumulated, last announcement]	158,800		350,734,425
1 May 2024	1,500	2,291.31	3,436,965
2 May 2024	1,500	2,303.53	3,455,295
3 May 2024	1,100	2,345.42	2,579,962
6 May 2024	1,100	2,572.91	2,830,201
7 May 2024	1,300	2,567.86	3,338,218
Accumulated under the programme (B shares)	165,300		366,375,066

With the transactions stated above, ROCKWOOL A/S owns 225,588 B shares corresponding to 1.04 percent of the Company's total share capital.

An overview showing the transaction data for the period 1 – 7 May 2024 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