Rottneros — Regulatory Filings 2010

Nov 3, 2010

PRESS RELEASE

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

Stockholm, 3 November 2010

Production resumed at Vallvik Mill

The shutdown for maintenance work and to implement investments approved for Vallvik Mill, which lasted for a period of almost three weeks, has now come to an end and production is back on track. The two investments agreed at the end of 2009 and the beginning of 2010 respectively have been connected and put into operation. These investments involved replacing the remaining old part of the evaporation plant and also substantially improving air regulation in the recovery boiler. Their total cost amounted to around SEK 130m.

"We have now eliminated production bottlenecks, thereby increasing the capacity of the mill from 200,000 to 220,000 tonnes per year," says Robert Jensen, MD of Vallvik Mill. The investments will also result in reduced emissions.

"It is particularly gratifying", continues Jensen, "that all work during the shutdown, which employed almost 600 people went according to plan and that costs were within budget. We will now prove that we can supply what we have promised and look forward to the next stage of our development at the Vallvik factory".

For further information please contact: Robert Jensen, Managing Director of Vallvik Mill, +46 270 620 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 3 November 2010 at11.30 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.