Rockwool

Declaration of Voting Results & Voting Rights Announcements • Mar 2, 2023

Company announcement for ROCKWOOL A/S Release no. 02 – 2023 to Nasdaq Copenhagen

2 March 2023

Completion of conversion of A shares to B shares in accordance with the articles of association and information on adjusted number of voting rights and share capital

ROCKWOOL A/S has today completed the conversion of 39,615 A shares to a corresponding number of B shares (each having a nominal value of DKK 10). The conversion is effected in accordance with article 6 of the articles of association and at the request of the holders of the A shares in question.

The company's articles of association have been updated with the resulting changes to the size of the company's A- and B share capital. The total share capital is unchanged. The articles of association can be found on the company's website.

In accordance with Section 32 of the Danish Capital Market Act, ROCKWOOL A/S is required to publish the total number of voting rights and the size of the share capital in the event of changes. Following the completion and registration of the conversion, ROCKWOOL A/S' total number of voting rights and share capital amount to (after the change):

Share capital	Nominal value		Voting rights
Class A share capital	DKK	108,669,070	108,669,070
Class B share capital	DKK	107,538,020	10,753,802
Total	DKK	216,207,090	119,422,872

Further information: Thomas Harder

Head of Group Treasury and Investor Relations ROCKWOOL A/S +45 46 55 86 77