Mari Foster
  1. Associate

Ms. Foster is an associate in Davis Polk's Corporate Department, practicing in the Tokyo office. A native English and fluent Japanese speaker, she joined the firm’s Tokyo office in 2016. She advises primarily on security offerings, cross-border M&A, and investigations and antitrust matters.

Work Highlights

  • Underwriters on Mizuho Financial Group’s SEC-registered notes offerings
  • Sumitomo Life Insurance Company on its subordinated notes offering
  • ORIX Corporation on its SEC-registered notes offering
  • Sushiro Global Holdings on its IPO
  • Mitsubishi Tanabe Pharma on its acquisition of NeuroDerm
  • Dai-ichi Life Holdings on its investment in and strategic cooperation with Janus Capital Group and Henderson Group
Selected representations before joining Davis Polk
  • Hitachi Systems Limited on its acquisition of Cosmic Blue Team S.p.A., an Italian IT services company
  • Hitachi Systems Limited on its acquisition of a majority stake in Micro Clinic India Pvt. Ltd., an Indian IT services company
  • Hitachi Ltd. on its joint venture with Johnson Controls, Inc.
  • Taisho Pharmaceutical Co., Ltd. on its acquisition of a pharmaceutical product line held by Roche Holding Ltd. in the Philippines
  • Underwriters on Sumitomo Life Insurance Company’s subordinated notes offering
  • Underwriters on Olympus Corporation’s global offering
  • SoftBank Corp. on its global offering

Professional History

  • Davis Polk since 2016

Practice Focus

Bar Admissions

  • State of New York


  • B.A., Columbia University, 2006
  • J.D., University of Washington School of Law (Seattle), 2012