Active Biotech — Regulatory Filings 2011

Apr 26, 2011

PRESS RELEASE

Active Biotech's partner Teva comments on DEFINE study results in Multiple Sclerosis

Read Teva Pharmaceutical Industries Ltd's (NASDAQ: TEVA) complete press release here.

For further information on Active Biotech's and Teva's oral MS drug laquinimod, please visit www.tevapharm.com or www.activebiotech.com.

Lund, April 26, 2011

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Active Biotech AB (publ)

Tomas Leanderson President & CEO

For further information, please contact: Göran Forsberg Vice President Investor Relations & Business Development Tel +46 (0)46 19 11 54

Active Biotech AB (NASDAQ OMX NORDIC: ACTI) is a biotechnology company with focus on autoimmune/inflammatory diseases and cancer. Projects in pivotal phase are laquinimod, an orally administered small molecule with unique immunomodulatory properties for the treatment of multiple sclerosis, TASQ for prostate cancer and ANYARA for use in cancer targeted therapy, primarily of renal cell cancer. In addition, laquinimod is in Phase II development for Crohn's and Lupus. Further projects in clinical development comprise the two orally administered compounds, 57- 57 for SLE and Systemic Sclerosis as well as RhuDexTM for RA. Please visit www.activebiotech.com for more information.

Active Biotech AB (Corp. Reg. No. 556223-9227) Box 724, SE-220 07 Lund Tel: +46 46 19 20 00 Fax: +46 46 19 11 00

Active Biotech is obligated to publish the information contained in this press release in accordance with the Swedish Securities Market Act. This information was provided to the media for publication on April 26, 2011, at 07:00 a.m.