John Riney

John Riney is a member of the Private Investments team at Castellan Group, a Louisville, Kentucky–based registered investment advisor that combines wealth management, private equity, venture capital, and family-office services and is unusually structured as an independent RIA wholly owned by a perpetual charitable trust (with most profits donated to charity). At Castellan he focuses on sourcing and evaluating investment opportunities, managing due diligence, and supporting portfolio companies, with a concentration on venture-capital investments in healthcare technology.

Riney began his career in investment banking before moving into private equity and private credit investing at Falcon Investment Advisors (the Boston mezzanine/private-credit manager later owned by Onex and known as Onex Falcon). His background also includes experience associated with Farmer's Business Network, an agtech company. This private-credit and direct-investment grounding informs his current work sourcing and structuring private deals.

He holds a Bachelor of Science in Business Administration from Washington University in St. Louis (2012–2015), with a concentration in Finance and in Economics & Strategy.

• Invests through Castellan Group's private-investments practice, targeting early-stage venture capital opportunities — the firm's disclosed deals have been at the Series A stage.
• Sector focus on healthcare technology: the private team is described as concentrating on "deal sourcing, due diligence, and closing venture capital investments in healthcare technology."
• Castellan manages Aging Innovation Fund I, an early-stage venture fund based in Louisville that invests in the U.S. and targets healthcare, health tech, and business products & services — a signal of the firm's thematic interests around aging and healthcare innovation.
• Deals are often executed through dedicated, closed-end SPVs (as with the Medxoom Series A), reflecting a deal-by-deal, hands-on approach that includes advising management and providing oversight.
• Fit profile: founders in healthcare/health-tech building at the seed-to-Series-A stage, where a smaller RIA-backed investor can lead or co-lead a focused round and stay actively involved post-investment.