Biovitrum AB

The shareholders in Biovitrum AB (publ), Reg. No. 556038-9321, are hereby summoned to the annual general meeting (the "Meeting"), to be held on Thursday 24 April 2008 at 4.00 p.m. at Berns Salonger, Berzelii Park, Stockholm, Sweden. Shareholders who wish to attend the Meeting must be recorded in the share register maintained by VPC AB (the Swedish Central Securities Depository) on Friday 18 April 2008, and must notify the company of their intention to participate in the Meeting not later than 4.00 p.m. on Friday 18 April 2008 at Biovitrum's web site by mail to Biovitrum AB (publ), "Annual General Meeting", 112 76 Stockholm, Sweden or by phone no. +46 8 697 34 27. The notification shall set forth the name, address, telephone number (daytime), personal/corporate identity number, the number of shares held and, when applicable, information about representatives and assistants. Per the day of this notice there are 45,622,700 shares and votes outstanding in the company. Nominee shares Shareholders, whose shares have been registered in the name of a nominee through the trust department of a bank or similar institution, must temporarily re-register their shares in their own names in the shareholders' register maintained by VPC AB to be entitled to participate in the Meeting. Shareholders must inform their nominee of such re-registration well before Friday 18 April 2008, when such re-registration must have been executed. Proxy, etc Shareholders represented by proxy shall issue a written and dated power of attorney for the proxy. If the power of attorney is issued on behalf of a legal entity, a certified copy of a registration certificate for the legal entity shall be appended. The power of attorney and the registration certificate may not be older than one year. The power of attorney in original and, when applicable, the registration certificate, should be submitted to the company by mail at the address indicated above well before the Meeting. A proxy form is held available at the company's web site, and will also be sent to shareholders who so request and who inform the company of their postal address. For more information, please contact: Biovitrum AB (publ) Martin Nicklasson, CEO Phone: +46 8 697 20 00 martin.nicklasson@biovitrum.com