Press Release

Seattle Genetics to Present at Upcoming Investor Conferences

BOTHELL, Wash.--(BUSINESS WIRE)--May. 31, 2012-- Seattle Genetics, Inc. (Nasdaq:SGEN) announced today that management will present at the following upcoming investor conferences. The presentations will be webcast live and available for replay from Seattle Genetics’ website at www.seattlegenetics.com in the Investors and News section.

Jefferies 2012 Global Healthcare Conference

Wednesday, June 6 at 11:30 a.m. Eastern time in New York, NY
 

Bank of America Merrill Lynch 2012 Smid Cap Conference

Thursday, June 7 at 3:05 p.m. Eastern time in Boston, MA
 

About Seattle Genetics

Seattle Genetics is a biotechnology company focused on the development and commercialization of monoclonal antibody-based therapies for the treatment of cancer. The U.S. Food and Drug Administration granted accelerated approval of ADCETRIS® (brentuximab vedotin) in August 2011 for two indications. ADCETRIS is being developed in collaboration with Millennium: The Takeda Oncology Company. In addition, Seattle Genetics has three other clinical-stage antibody-drug conjugate (ADC) programs: SGN-75, ASG-5ME and ASG-22ME. Seattle Genetics has collaborations for its ADC technology with a number of leading biotechnology and pharmaceutical companies, including Abbott, Bayer, Celldex Therapeutics, Daiichi Sankyo, Genentech, GlaxoSmithKline, Millennium, Pfizer and Progenics, as well as ADC co-development agreements with Agensys, an affiliate of Astellas, and Genmab. More information can be found at www.seattlegenetics.com.

Source: Seattle Genetics, Inc.

Seattle Genetics, Inc.
Peggy Pinkston, 425-527-4160
ppinkston@seagen.com