Rottneros — Capital/Financing Update 2010

Sep 1, 2010

PRESS RELEASE

Rottneros AB (publ) Box 70 370, SE-107 24 Stockholm, Sweden Tel +46 8 590 010 00 www.rottneros.com

Stockholm, 1 September 2010

Rottneros goes ahead with its investment plan for Vallvik Mill

The Board of Rottneros has approved an investment of SEK 60m for a new biological water treatment plant at Vallvik Mill. This investment is one of the stages of the investment programme presented at the end of 2009, at the time of the new share issue.

Investments have previously been granted to improve the evaporation plant and the recovery boiler at Vallvik. This work will be carried out during the planned maintenance shutdown at the mill in October 2010. The investments now mean that it is possible to use and incinerate more organic material and to reduce the size of the external water treatment plant, which has now been approved.

The new water treatment plant will be put into operation during the autumn of 2011 when it is planned to implement the final stage of the investment programme.

"The investment programme that is going ahead at Vallvik Mill resolves long-standing discussions with various levels of the environmental agencies, at the same time as expanding the production of bioenergy at the mill and increasing production capacity by 20 per cent to an annual figure of 242,000 tonnes", explains Ole Terland, President of Rottneros.

For further information please contact: Ole Terland, President and Chief Executive Officer, +46 8 590 010 00

Rottneros discloses the information provided herein pursuant to the Securities Markets Act and/or the Financial Instruments Trading Act. The Information was submitted for publication on Wednesday, 1 September 2010 at noon CET.

Rottneros is an independent producer of market pulp. The Group comprises the parent company Rottneros AB, listed on NASDAQ OMX Stockholm, and its subsidiaries Rottneros Bruk AB and Vallviks Bruk AB with operations involving the production and sale of market pulp. The Group also includes the wood procurement company Rottneros Baltic SIA in Latvia and the sales company Rottneros S.A. in Belgium. The Rottneros Packaging AB division produces food packaging made from paper pulp. The Group has around 350 employees and had a turnover of approximately SEK 1.5 billion in the 2009 financial year.