Trinity Sky

Investing for Long Term Capital Gains & Social Prosperity

Trinity Sky LLP is a private family investment office with the dual purpose of: 

  • Investing for long term capital appreciation through public and private market opportunities, with an emphasis on technological innovations in the United States and Europe.
  • Supporting technology-enabled educational, social entrepreneurship and economic growth initiatives in the United Kingdom and the United States.

Key Principal: Hosein Khajeh-Hosseiny, PhD

Hosein Khajeh-Hosseiny is Chairman of Trinity Sky LLP, a venture capital and private equity investor; Senior Advisor to McKinsey & Company on Innovation, Growth and Investments; a member of the Advisory Council to McKinsey & Company on its New Ventures; and a Board Trustee of the Brookings Institution in Washington DC, the United States’ oldest and largest public policy think tank.

From October 2004 to June 2018 he was MD, MP and CEO of Northgate Capital, a firm whose AuM grew by 20x during his tenure, and all of whose equity he sold in 2016.

Hosein has advised CEOs and Boards of global corporations; been a member of the Advisory Boards of several private equity and venture capital firms in the US, Europe, Japan, China and India; and has served on the Management Boards of venture backed technology companies on the West Coast.     

Two of Dr. Khajeh-Hosseiny’s public service contributions to his home country, the United Kingdom, have focused on Smart Manufacturing and on Social Entrepreneurship. He has been sponsoring and advancing initiatives aimed at helping UK’s small and mid-sized manufacturing firms to more rapidly digitize, and transition towards Smart Manufacturing to help raise UK’s productivity and competitiveness. Hosein helped co-found UnLTD, a foundation dedicated to financing and advancing social entrepreneurship in the UK. For the past 18 years, he has been serving on its prize-winning Investment Committee.

One of Hosein’s key new public service priorities is helping foster a much more potent, value creating tapestry of trans-Atlantic collaboration between North America and European Advanced (including High Tech) industries and ecosystems. The three-fold objectives of this are: harnessing greater intra-industry growth and innovation; furthering the success of Advanced Industries in accelerating the technological empowerment and competitiveness of other economic sectors in the Western Hemisphere; and enhancing the private sector’s success in inducing a more inclusive social and economic fabric.

Hosein holds a PhD in Applied Mathematics and Econometrics from Cambridge University, and has spoken to several years of Graduate classes at Cambridge’s Judge Business School on Ethics, Growth and Investing. He also has a Masters in Finance and a BA in Economics. Hosein and his wife live in San Francisco and London.



August 8, 2018

Former Northgate Capital CEO talk about his new hybrid AI-focused firm PDF

Silicon Valley Business Journal

Examples of Past Venture Capital Company Investments



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