Brian Frank

Founding Partner at BayPine

Brian Frank is a Founding Partner of BayPine as well as the Founder and Managing Partner of Declaration Partners, an investment firm anchored by the family office of private equity veteran and philanthropist David M. Rubenstein. He has held leadership roles at MSD Partners, the family office of Michael Dell, and Harman International, a Fortune 500 developer of audio and automotive infotainment systems. Earlier in his career he held roles at Cumberland Associates, W.R. Hambrecht + Co and Lazard Frères.

Mr. Frank has established a career as a thoughtful investment professional and a builder of high-performing investment teams and organizations. At MSD Partners, he established an in-house energy practice that invested over $1.6 billion of family office and third-party capital across asset classes: public and private equity, credit and commodities. His investment performance, team-building skills and broad-based network ultimately earned him the opportunity to establish Declaration Partners.

Mr. Frank currently serves as a board member of Enstructure, Redesign Health and viagogo and previously served on a number of boards across a range of industries. He is a member of the Council on Foreign Relations. He holds an AB from Harvard College and an MBA from Harvard Business School.


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  • Founding Partner

    November, 2020 - present

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