person siluete


  • Finance & Accounting
  • Financial Services
  • Mergers & Acquisitions
  • Venture Capital
  • Information Technology
  • International Operations


  • BA, Providence College
  • GE Financial Management Program

John F. Halligan

A senior management executive with over 30 years of expertise in venture capital and financial and operating management in various global industries, financial services, sales and distribution.


  • Provides broad expertise in assisting clients through Financial Management and Information Technology Consulting, including Interim CFO assignments, IPO positioning and Merger & Acquisition Assessments
  • Provides assistance to start-up companies from business plan development to acquiring funds
  • Co-founded SI Ventures and served as Managing Partner of the venture capital firm specializing in IT, security, infrastructure and communications software companies enabling eCommerce.
  • Provided strategic direction, operating advice and business contacts for over 20 SI Ventures portfolio companies, serving on the Board of Directors of eight of the companies
  • As Executive VP, Chief Financial Officer, and Treasurer of Gartner for nine years, led the company's IPO in 1994 and completed more than 20 acquisitions and divestitures
    - Managed financial and administrative functions during Gartner’s tremendous growth from $40 million to over $900 million in annual revenue
    ■ - Established an internal venture capital organization, funding start-up companies that were either later acquired by Gartner or sold to other acquirers
    ■ In 22 years with General Electric Company held senior financial and operating positions, including CFO/Staff Vice President of GE Communications and Services
    - Financial positions in the major appliance industries, international operations, industrial motors and power equipment
    - Heavily involved in mergers, acquisitions, and operations at GE