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Capstone Capital, LLC was founded in 2003 by Randall A. Hack to invest in private companies, with a special focus on wireless telecommunications. From 2003 through 2014 Capstone invested both for its own account and in partnership with Berkshire Partners, a Boston-based private equity firm with over $8 billion under management. Mr. Hack served as an Advisory Director of Berkshire from 2002-2014. In that capacity he assisted Berkshire in identifying and assessing private companies seeking to raise capital.

Capstone Capital LLC Questions

The Capstone Capital LLC annual revenue was $2 million in 2026.

Capstone Capital LLC is based in Greenwich, Connecticut.

The NAICS codes for Capstone Capital LLC are [5239, 523, 52].

The SIC codes for Capstone Capital LLC are [679, 67].

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