Stephen S. Hasegawa

Stephen Hasegawa

Stephen S. Hasegawa

San Francisco, California

Stephen Hasegawa represents whistleblowers in qui tam cases and whistleblower submissions involving numerous industries, such as healthcare, defense, aerospace, financial services and government procurement.

He has played a key role in a number of whistleblower cases that have gotten significant results, including:

Mr. Hasegawa joined Phillips & Cohen after eight years with Irell & Manella LLP in Los Angeles. He litigated numerous securities matters, including matters involving private securities litigation, SEC actions and inquiries, criminal investigations, internal investigation and state securities laws. Mr. Hasegawa’s practice also covered a diverse range of commercial disputes, including litigation under the California False Claims Act, entertainment-industry litigation, class actions and numerous cases concerning copyright, trademark, trade secrets and contracts.

Mr. Hasegawa graduated with honors in 1998 from the University of Chicago Law School, where he was Articles Editor of the University of Chicago Legal Forum. He has been named a “Super Lawyers Rising Star” in both Northern and Southern California.

Mr. Hasegawa serves as Phillips & Cohen LLP’s General Counsel. He is admitted to the bar in California.

Areas of Practice

  • Whistleblower/Qui Tam
  • Government Agencies & Programs
  • Government Contracts
  • Health & Health Care Law
  • Whistleblower -- Employee
  • Tax Law
  • Securities Law


  • University of Chicago Law School, Chicago, Illinois - 1998
    • Honors: With Honors

Published Works

  • "The SEC's Secret Enforcement Weapon: Whistleblowers", Stephen Hasegawa, Private Funds Management, Aug. 06, 2014

Honors and Awards

  • Super Lawyers “Rising Star” in Northern and Southern California