Release no. 23 - 2008 To NASDAQ OMX Nordic Exchange Copenhagen A/S 1067 Copenhagen K This is a translation of the Danish version. Only the Danish version is legally binding. 17 December 2008 Rockwool International A/S' shares and related securities Report of transactions with shares and related securities of Rockwool International A/S by persons discharging managerial responsibilities and persons/companies closely associated with these. Pursuant to section 28a of the Danish Act on Securities Trading, Rockwool International A/S shall make public transactions with shares and related securities of Rockwool International A/S by persons discharging managerial responsibilities and persons/companies closely associated with these. Name: Thomas Kähler Reason: Member of the Board of Directors Issuer: Rockwool International A/S ID code/ISIN: A = DK0010219070 Description: Shares Transaction: Purchase Trading Date: 2008-12-11 Market: NASDAQ OMX Nordic Exchange Copenhagen A/S Number: 65 Market value DKK: 23,595.00 For further information please contact: Rockwool International A/S Group Legal Affairs ROCKWOOL INTERNATIONAL A/S Hovedgaden 584, Entrance C DK-2640 Hedehusene Telephone: +45 46 56 03 00 Fax: +45 46 56 33 11 Internet: www.rockwool.com Reg. no. (CVR): 54879415