Courtney M.W. Tygesson


I dive into the trenches with clients, building relationships that transcend the deal or project we’re working on - I want them to feel like we're more than just outside counsel, but a true extension of their team.

Courtney is a founding partner of Cooley’s Chicago office and concentrates her practice in capital markets transactions, with an emphasis on life sciences and technology, and corporate governance and securities law matters. She has experience representing issuers and underwriters in equity and debt offerings. Courtney is a trusted advisor to clients on a variety of transactions, particularly those involving public companies.

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  • NETSTREIT Corporation – $209 Million Follow-on Offering 

  • Arbor Realty Trust – $123 Million Offering 

  • NETSTREIT – $230 Million Underwritten Common Stock Offering 

  • DICE Therapeutics – $234.6 Million IPO 

  • Adagio Therapeutics – $356 Million IPO 


  • Washington University in St. Louis
    JD, magna cum laude, Order of the Coif, Notes editor, Washington University Law Review, 2010

  • Northwestern University
    BS, Journalism
    cum laude, 2007

Admissions & Credentials



Rankings & Accolades

    Best Lawyers: Ones to Watch, Corporate Law (2021)

    Super Lawyers: Illinois Rising Star (2019)

    Leading Lawyers Network: Emerging Lawyer (2017)