Entrepreneurial Growth Capital

We partner with early stage B2B Software, Enterprise IT and Healthcare IT companies.

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We provide Entrepreneurial Stage Capital to fast-growing, recurring revenue-model, software-enabled companies which address healthcare business needs or supply chain efficiencies.We focus on opportunities throughout the lower Great Lakes region from our Ann Arbor and Columbus offices.

We are often the lead institutional investor in a Series A round with check size from $1.0-2.5 million, but we also participate with smaller investments in earlier rounds in order to partner with Series A prospects, as well as participate in follow-on rounds when we’ve previously invested in an A round.

We have significant experience with entrepreneurial stage companies and know where we can add value by challenging, but not second-guessing management.



Ben Trumbull

Prior to co-founding Tamarind Hill in 2015, Ben managed the Rocket Venture Fund, a seed stage venture capital fund.  At Rocket, Ben led investments in B2B, healthcare, and enterprise software and served on the boards of Tour de Force, Satelytics, Roost, and IDsync.  Ben also served as a board observer for Docusphere (Acquired by TUNG.L), and Ceuticare.  Prior to being named fund manager, Ben served as an EIR and CFO for two portfolio investments, where he led fundraising rounds and organizational development for both companies.  Ben also provided venture assistance to Plymouth Venture Partners, where he conducted due diligence and managed investment pipeline.  Additionally, Ben held management roles for family offices in Toledo, where he oversaw venture capital and private equity investments, and was a market researcher covering P&G for the Nielsen Company.

Ben holds a BA in economics from Denison and an MBA from IU’s Kelley School of Business.  He lives in Ann Arbor, MI with his wife, Kate, and daughter, Scottie.

Mark Shary

Prior to co-founding Tamarind Hill, Mark has been a prolific founder, seed investor, advisor, board member and executive for more than a dozen technology start-ups.  He currently chairs the boards of two fast-growing SaaS businesses, Updox and Vantage Point Logistics, is an executive committee member and an audit chair for Rev1 Ventures, a venture development organization with $85 million under investment, and serves on the boards of hc1.com, GradLeaders, SafeWhite, and IDSync.  Companies that Mark founded or co-founded in the past eight years have raised over $70 million in private capital and have combined annual revenues of more than $40 million.  The first software company founded by Mark, HUBLink, merged into Healthcare.com and grew revenue to over $65 million.  Additionally, Mark has been a NASDAQ CFO, an executive with Ernst & Young, an audit chair for a regulated investment company, and a co-founder of a 25 year running public charity.

Mark holds a BBA in accounting from the Mendoza School of Business at Notre Dame.  He lives in Columbus, OH with his wife Teresa and is the proud father of two adult sons.

Claus Von Zychlin

Prior to joining Tamarind Hill in May 2017, Claus was the CEO of Mt Carmel Health System, flagship system of Trinity Health, one of the nation’s largest non-profit integrated health networks. Claus helped lead Mt Carmel to be one of the premier health systems in the Midwest. Claus has over 30 years of experience managing and working in healthcare systems. Prior to Mt. Carmel, Claus served as COO of TriHealth in Cincinnati and President of The Christ Hospital, also in Cincinnati.

Claus supports the Tamarind Hill management team by providing strategic guidance and connectivity to industry thought leaders.

Claus holds a BA from Augustana and an MBA from Northern Illinois University College of Business.


411 Montgomery Ave   |   Ann Arbor, MI 48103   |   (419)345-7688

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