Sean Clayton


I partner with life sciences and technology companies to accomplish their general legal objectives, as well as guide them through financing transactions and public company reporting and compliance.

+1 858 550 6034

Sean Clayton's practice focuses on the representation of public and private growth companies in general corporate matters, as well as a wide range of transactions, including public offerings, venture capital financings and M&A.

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  • Inhibrx – $137 Million IPO 

  • Poseida Therapeutics – $224 Million IPO 

  • Pliant Therapeutics - $166 Million IPO 

  • ORIC Pharmaceuticals - $138 Million IPO 

  • Phathom Pharmaceuticals - $209 Million IPO 

  • View all

Don’t know how Cooley does it but they always pull out great attorneys to work with and you are certainly that. We really appreciate your knowledge, experience and counsel through this process. – CFO of IPO Client

  • Stanford Law School
    JD, Order of the Coif, 2003

  • University of California, San Diego
    BA, Political Science and Economics
    summa cum laude, Phi Beta Kappa, 2000

Admissions & Credentials



+1 858 550 6034 office
+1 858 550 6420 fax

4401 Eastgate Mall
San Diego, CA 92121-1909