# Rising Tide Foundation

Rising Tide Foundation is an Endowment / Foundation based in Schaffhausen, Switzerland.

## Overview

- **Organization type:** Endowment / Foundation
- **Headquarters:** Schaffhausen, Switzerland
- **Region:** Europe
- **Address:** Herrenacker 15, 8200 Schaffhausen, Switzerland
- **Founded:** 2010
- **Assets under management:** Undisclosed
- **Website:** risingtide-foundation.org
- **LinkedIn:** https://ch.linkedin.com/company/rising-tide_2

## Regulatory record

- **Reports private funds:** No

## About

Rising Tide Foundation was established in 2010 in Schaffhausen, Switzerland, by Richard Stephenson, founder of Cancer Treatment Centers of America, and the Humphreys family, whose wealth stems from Tamko Building Products. It operates as a charitable, non-profit organization with additional investment management offices in Pacifica, California. The foundation's investment strategy spans buyout, fund-of-funds, growth equity, secondaries, distressed debt, general venture, and co-investments. Its holdings include a significant healthcare intellectual property portfolio, a collection of commercial real estate assets across the United States — Embassy Suites by Hilton properties in Rogers, Arkansas; Frisco, Texas; San Marcos, Texas;, Loveland, Colorado, The Rising Tide Center mixed-use development in Beloit and Wisconsin. The venture arm is managed by Ossama Hassanein, who leads fund commitments and direct deals from Pacifica. The foundation maintains a constellation of related philanthropic entities, including Gateway for Cancer Research, the J.P. Humphreys Foundation, and multiple Rising Tide-branded clinical cancer research bodies. Strategic partners include the Atlas Network for libertarian grantmaking and SwissFoundations. A dated operational note: founder Richard Stephenson passed away in 2023, and Chairman Shawn Stephenson now leads the foundation and its affiliated vehicles. Rising Tide's architecture is structurally unusual — a Swiss charitable foundation running venture capital fund management from California, intertwined with a US-based cancer-care fortune. Its grantmaking and investment activities are channeled through a network of separate foundations rather than a single consolidated vehicle, a design that segments public-policy advocacy from clinical research and commercial real estate.

## Sectors

- Healthcare Services
- Real Estate
- Venture Capital

## Offices

- Pacifica, California, United States

## People

- Shawn Stephenson — Chairman
- David C. Humphreys — Trustee
- Ossama Hassanein — Founder and Chairman of Rising Tide VC

## Questions

### Who runs investment decisions at Rising Tide Foundation?

Venture investments are overseen by Ossama Hassanein, founder and chairman of Rising Tide VC, operating from the foundation's Pacifica, California office. Hassanein brings Silicon Valley venture experience and previously chaired the Philadelphia chapter of YPO. The foundation's broader investment activity, including real-asset holdings, reports to the board chaired by Shawn Stephenson and trustee David C. Humphreys (per Altss research).

### What investment stages does Rising Tide's venture arm target?

Rising Tide VC invests across the venture lifecycle — from early-stage venture to growth equity — and also participates in buyout, distressed debt, secondaries, and fund-of-funds commitments. The strategy is disclosed as broadly opportunistic rather than stage-constrained (per Altss research).

### How does Rising Tide Foundation source proprietary deal flow?

Venture deal flow is sourced primarily through Ossama Hassanein's network in Silicon Valley, strengthened by his long-standing YPO membership and chairmanship. The foundation's co-investment relationship with Crescent Enterprises provides additional deal access, while its real-estate acquisitions appear to be directly originated and held, including multiple Embassy Suites by Hilton convention-center hotels (per Altss research).

### What is Rising Tide Foundation's known posture on co-investments alongside external GPs?

The foundation actively engages in co-investment and takes limited-partner positions in external funds. Crescent Enterprises is a known LP in Rising Tide Fund, signaling that the foundation raises capital alongside its own balance-sheet commitments, a structure more typical of a venture-capital firm than a traditional endowment (per Altss research).

## Related profiles

- [Risemint Capital Advisors](https://altss.com/profile/risemint-capital-advisors)
- [Ritter Alpha](https://altss.com/profile/ritter-alpha)

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Last updated: 2026-06-03T20:00:00.000Z

Canonical page: https://altss.com/profile/rising-tide-foundation

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