RaySearch Laboratories — Share Issue/Capital Change 2011

Jun 29, 2011

PRESS RELEASE - STOCKHOLM, JUNE 29, 2011

Conversion of shares

According to RaySearch's articles of association, owners of Class A shares have the right to have such shares converted to Class B shares. Conversion reduces the total number of votes in the company.

In June, at the request of Bengt Lind, 1,061,577 Class A shares were converted to Class B shares. The total number of votes in the company thereafter amounts to 136,202,292.

The total number of registered shares in the company amounts to 34,282,773, of which 11,324,391 are Class A shares and 22,958,282 are Class B shares.

ABOUT RAYSEARCH

RaySearch Laboratories is a medical technology company that develops advanced software solutions for improved radiation therapy of cancer. RaySearch's products are mainly sold through license agreements with leading partners such as Philips, Nucletron, IBA Dosimetry, Varian, TomoTherapy and Siemens. To date, 15 products have been launched through partners and RaySearch's software is used at some 1,800 clinics in more than 30 countries. In addition, RaySearch offers the proprietary treatment planning system RayStation® directly to clinics. RaySearch was founded in 2000 as a spin-off from Karolinska Institutet in Stockholm and the company is listed in the Small Cap segment on NASDAQ OMX Stockholm.

For more information about RaySearch, visit www.raysearchlabs.com.

FOR FURTHER INFORMATION, CONTACT:

Anders Martin-Löf, CFO, RaySearch Laboratories AB (publ) Telephone: +46 (0)8-545 061 30 anders.martin-lof@raysearchlabs.com