Seagen to Host Conference Call and Webcast Discussion on September 21, 2021 to Discuss TIVDAK™ (tisotumab vedotin-tftv) Approval

BOTHELL, Wash.--(BUSINESS WIRE)-- Seagen Inc. (Nasdaq: SGEN) will host a conference call and webcast on Tuesday, September 21, 2021 to discuss the U.S. Food and Drug Administration approval of TIVDAK™ (tisotumab vedotin-tftv). Access to the event can be obtained as follows:

September 21, 2021

6:00 a.m. Pacific Time / 9:00 a.m. Eastern Time

• Telephone 844-763-8274 (U.S.) or +1 412-717-9224 (international); conference ID 10160278
• Webcast with slides will be available at www.seagen.com in the Investors section. A webcast replay will be archived on the Company’s website.

About Seagen

Seagen is a global biotechnology company that discovers, develops and commercializes transformative cancer medicines to make a meaningful difference in people’s lives. Seagen is headquartered in the Seattle, Washington area, and has locations in California, Canada, Switzerland and the European Union. For more information on the company’s marketed products and robust pipeline, visit www.seagen.com and follow @SeagenGlobal on Twitter.

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For Investors

Peggy Pinkston

Senior Vice President, Investor Relations

(425) 527-4160

ppinkston@seagen.com

For Media

David Caouette

Vice President, Corporate Communications

(310) 430-3476

dcaouette@seagen.com

Source: Seagen Inc.