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John Stapleton represents clients in domestic and international corporate and securities transactions. He regularly advises issuers and underwriters in a variety of public and private securities transactions, including initial public offerings, mergers and acquisitions, debt offerings, and special purpose acquisition company transactions. His clients operate businesses in a variety of industries, primarily including healthcare, medical technology, artificial intelligence, biotechnology, blockchain and crypto assets, and security technology, among others.

John lived for six years in Japan and is a leading capital markets attorney in cross-border Japanese legal matters. He has extensive experience representing Japanese and U.S. companies in a variety of cross-border corporate and capital markets transactions.


  • Chicago-Kent College of Law, J.D.
  • St. John's University, B.A.

Bar Admissions

  • Illinois


  • Japanese


  • Recognized as a "Notable Practitioner" in M&A and Real Estate Finance by IFLR1000 (2023)
  • Named to Best Lawyers: Ones to Watch list in Real Estate Law (2023 and 2024)
  • Named "Illinois Super Lawyer" Rising Star by Thomson Reuters (2020-2023)