Rockwool

Transaction in Own Shares • Mar 5, 2025

Company announcement for ROCKWOOL A/S Release no. 12 – 2025 to Nasdaq Copenhagen

5 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 26 February – 4 March 2025:

Date	Number of B shares	Average purchase price B shares (DKK)	Aggregate amount, B shares (DKK)
[Accumulated, last	24,300		67,132,513
announcement]
26 February 2025	1,300	2,861.07	3,719,391
27 February 2025	1,500	2,843.11	4,264,665
28 February 2025	1,500	2,829.84	4,244,760
3 March 2025	1,700	2,806.29	4,770,693
4 March 2025	2,500	2,726.80	6,817,000
Accumulated under the programme (B shares)	32,800		90,949,022

With the transactions stated above, ROCKWOOL A/S owns 546,813 B shares corresponding to 2.53 percent of the Company's total share capital.

An overview showing the transaction data for the period 26 February – 4 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