Clay Siegall Biography, Nationality, Professionalism, Business Arms and Net Worth

Clay Siegall is the Founder, President, CEO & Chairman of Seattle Genetics. Seagen founder Clay Siegall is jumping back into the biotech world as CEO and president of Morphimmune.

Profile Summary

Full Name Clay Siegall
Gender Male
Nationality American

Founder, President, CEO & Chairman of Seattle Genetics.

Famous In Biotech world
Net Worth

 Who is Clay Siegall?

Founder of Seagen Inc., Clay B. Siegall is the Chairman, President & Chief Executive Officer at this company. Dr. Siegall is also on the board of 5 other companies. In the past he held the position of Principal Scientist at Bristol-Myers Squibb Pharmaceutical Research Institute. He received an undergraduate degree from the University of Maryland and a doctorate from George Washington University.

Clay Siegall Biography Nationality Professionalism Business Arms And Net Worth
Clay Siegall

Career Path of Clay Siegall


Dr. Siegall co-founded Seattle Genetics in 1998 and is the company’s President, Chief Executive Officer and Chairman of the Board of Directors. Under his leadership, Seattle Genetics has built a diverse pipeline of antibody-based cancer therapies, including ADCETRIS (brentuximab vedotin) that was granted accelerated approval by the U.S. Food and Drug Administration (FDA) in 2011. Dr. Siegall has also guided Seattle Genetics/ capital-raising activities, securing more than $675 million through public and private financings, including the company’s initial public offering in 2001. Prior to co-founding Seattle Genetics, Dr. Siegall was with the Bristol-Myers Squibb Pharmaceutical Research Institute from 1991 to 1997 and the National Cancer Institute, National Institutes of Health from 1988 to 1991. He serves on the Board of Directors of Alder BioPharmaceuticals, a private biotechnology company. Dr. Siegall is an author on more than 70 publications and holds 15 patents.

Clay Siegall’s Net Worth

The estimated Net Worth of Clay B Siegall is over $215 Million dollars. Clay Siegall owns over 17,043 units of Seagen Inc stock worth over $139,052,192 and over the last 20 years he sold SGEN stock worth over $61,764,245.


Clay is Associated with Seattle Genetics Company. His designation is Founder, President, CEO & Chairman. His Trend Score is 0.4. Clay Siegall’s Crunchbase Rank is 3,671, and he currently lives at Seattle, Washington, United States
Clay has been seen in over 43 News Articles.


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