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GenHenn Capital
GenHenn Capital manages the Hennessy family office and deploys a $75 million venture fund into early-stage life sciences companies.
GenHenn Capital
GenHenn Capital was established in 2022 by Michael J. Hennessy Jr. after the deaths of his parents, the founders of MJH Life Sciences. The firm operates as the single-family office for the Hennessy family and maintains its headquarters in Cranbury, New Jersey. The office invests in Seed and Series A companies across life sciences, healthcare, and biotechnology. It structures positions through equity and convertible securities and has completed 17 investments to date. Allocations remain concentrated in North America. The strategy pairs capital with operational support drawn from the family’s experience building MJH Life Sciences. The team consists of three named professionals. Michael J. Hennessy Jr. serves as Founder and Chief Investment Officer while continuing as CEO of MJH Life Sciences. Bill Hagaman acts as Advisor and Raul Martinez serves as Vice President. The office also oversees the Mike and Patti Hennessy Foundation, which supports hereditary-disease research and STEM education. GenHenn Capital remains unregistered with the SEC because it serves only family clients. This structure limits external capital raising and keeps decision-making inside the family and its small advisory group.
General information
Firm type
Single Family Office
Year founded
2022
AUM
75 (Altss estimate)
Location
Region
North America
Country
United States
City
Cranbury
Corporate office
Cranbury, NJ, United States
Principals
Michael J. Hennessy Jr.
Founder and Chief Investment Officer
Bill Hagaman
Advisor
Raul Martinez
Vice President
Sector focus
Frequently asked questions
Who runs investment decisions at GenHenn Capital?
Michael J. Hennessy Jr. serves as Founder and Chief Investment Officer. Bill Hagaman and Raul Martinez support sourcing, diligence, and portfolio work.
Does GenHenn Capital participate in fund commitments or only direct deals?
The firm makes direct investments through equity and convertible securities in individual companies. It does not commit to external funds.
What investment stages does GenHenn Capital typically target?
The office focuses on Seed and Series A rounds. Typical check sizes range from $2 million to $5 million.
Where does the underlying wealth come from?
The capital originates from MJH Life Sciences, the privately held medical media company founded by Michael J. Hennessy Sr.
Does GenHenn Capital maintain philanthropic structures?
Yes. The Mike and Patti Hennessy Foundation supports hereditary-disease research, STEM education, and faith-based programs.
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.
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