John N. Irwin III

Co-Founder, Senior Advisor and Member of Investment Committee

  • John Irwin

Stamford, CT

John N. Irwin III2021-02-19T11:59:01-06:00

John co-founded Brookside Capital Partners in 2001 and is the President of Brookside International LLC, a private equity firm which he co-founded in 1977. John also currently serves as President of Orchard Ultrasound, an ultrasound semiconductor innovation lab in California which he co-founded.

During his career, John has managed portfolio companies with significant global operations, including a leading semi-conductor encapsulants business in the early 1980s and overseeing the privatization in Czechoslovakia, public voucher offering and a joint venture with a Japanese chemical company for a leading global food packaging company in the 1990s. He subsequently led a food flavor company.

Over his decades of investing John has also helped found several other middle-market private equity firms: BPI, Wicks Group, Clearview Capital and Brookside Equity Partners, the latter three became separate SEC-registered entities. He and his Brookside colleagues served on a number of portfolio company boards for these funds, including PSS (medical billing), Azek (building products), Senior Care (innovator in senior daycare), Performance Health (healthcare physical therapy products) and Select Quote (leader in senior medical and life insurance).

John has also been active with some venture companies, serving on boards of companies in wireless networking, pre-GPS satellite vehicular tracking, cyber and other specialty insurance.

John graduated from Princeton University.

John is the Chairman of the Achelis and Bodman Foundation and the Watson Foundation, a trustee of the Wildlife Conservation Society and the Fresh Air Fund. He was the former Chair of the advisory board of the Princeton Institute for International & Regional Studies and former Vice-Chair of Columbia University’s Teachers College.

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