James G.B. DeMartini

James G.B. DeMartini, III, CPA


Jim DeMartini is the Chairman of Seiler LLP, a leading accounting firm with offices in Silicon Valley and San Francisco. The firm specializes in providing services to high-net-worth individuals and families, as well as closely held businesses and non-profit organizations. In his role as a trusted advisor, Jim counsels in matters including income, estate and gift tax planning, wealth management, all facets of real estate and charitable gift planning.

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Professional Memberships

  • American Institute of Certified Public Accountants
  • California Society of Certified Public Accountants


Education / Certification

  • University of California, Los Angeles
  • Bachelor’s degree in Accounting, Golden Gate University
  • Certified Public Accountant, California


Community Affiliations

  • Board of Directors, Skoll Foundation
  • Board of Directors, Stupski Foundation
  • Board of Directors, Skoll Global Threats Fund
  • Founder and Member, Board of Directors of Sports Association for Youth
  • Chair, Santa Clara University Men’s Golf Committee
  • Trustee, Executive Committee Member and Audit Committee Chairman, Notre Dame de Namur University
  • Board Member, Mid-Peninsula Bank, a member of the Greater Bay Bancorp group
  • Board Member, Sisters of Notre Dame de Namur of California
  • Board Member, Santa Clara University English Advisory
  • Board Member, Lucile Salter Packard Children’s Hospital at Stanford Capital Campaign Committee
  • Board Member, Stanford University Medical Center Friends of Orthopedics