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Clay Siegall

Startup led by former Seagen CEO Clay Siegall merges with public company in $125M deal

Morphimmune, a biotech company led by former Seagen CEO Clay Siegall, is merging with a public biotech company, Immunome, in… Read More

Q&A with Seagen founder Clay Siegall on the Pfizer deal and his new biotech startup

Clay Siegall is proud of his legacy as co-founder and longtime CEO of Seagen, the largest biotech company in the… Read More

Seagen founder Clay Siegall is back in biotech as CEO of Purdue University spinout

Seagen founder Clay Siegall is jumping back into the biotech world as CEO and president of Morphimmune. Founded in 2020,… Read More

Ex-Seagen CEO Clay Siegall won’t face charges following arrest, domestic violence allegations

Clay Siegall, the former CEO and chairman of Seattle-area biotech giant Seagen, will not face charges stemming from an arrest… Read More

Seagen CEO and co-founder Clay Siegall resigns following domestic violence arrest

Clay Siegall has resigned as CEO and chairman of Seagen in the midst of domestic violence allegations, more than 24… Read More

Biotech giant Seagen reveals plans for 270K square-foot manufacturing facility near Seattle

Seagen is expanding its manufacturing capacity in the Seattle area. The fast-growing global biotech company will build a 270,000 square-foot… Read More

Seattle Genetics stock jumps 17% on breast cancer drug trial success

Shares of cancer drug maker Seattle Genetics soared more than 17 percent Monday morning following positive results for a new… Read More

Seattle Genetics shares slump after losses grow

Seattle Genetics on Thursday reported higher-than-expected losses for the fourth quarter, sending shares down 8 percent in after-hours trading. Quarterly… Read More

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