# Samuel Whitaker

> Samuel Whitaker is the founder and CEO of Mural Health, a Philadelphia-area clinical trials technology company building a participant-first platform that bundles fee-free payments, transportation, two-way communication, and real-time satisfaction data. He invented the original participant payment tool, the ClinCard, when he founded Greenphire in 2008 and grew it into a billion-dollar company on roughly $2.2 million of outside capital. After a stint as CTO of Signant Health, he launched Mural Health in 2022 to push the same idea further: treating the trial participant, not just the sponsor, as the customer. He also drove the creation of the Harley Jacobsen Act, federal legislation to stop taxing payments to clinical trial participants.

- **Role:** Founder & CEO at Mural Health
- **Organizations:** Mural Health, Greenphire, Signant Health, Project Mayhem Ventures, Ecount
- **Nationality:** American
- **Education:** Bachelor of Arts in Philosophy, University of Pennsylvania
- **Known for:** Invented the ClinCard, the first dedicated participant payment technology used across clinical trials in the US, Founded and led Greenphire to a valuation above $1 billion on roughly $2.2 million of outside investment, Founded Mural Health and raised $8M led by Bessemer Venture Partners, signing three of the top 15 global pharma companies

## Career timeline

- **pre-2008** — Investment banking roles at HSBC Global Banking and Markets and Legg Mason; VP of Product Management at Ecount
- **2008** — Co-founded Greenphire and invented the ClinCard, the first participant payment technology for clinical trials
- **2018** — Greenphire acquired by The Riverside Company
- **2021** — Greenphire acquired by Thoma Bravo; company valued at over $1 billion
- **2022** — Founded Mural Health with Jason Dong and Shawn Milochik; launched the Mural Link platform
- **2023** — Mural Health raised $8M seed round led by Bessemer Venture Partners; drafted a letter to Congress that became the Harley Jacobsen Act
- **2025** — Greenphire and Suvoda complete merger; the Harley Jacobsen Act reintroduced in Congress

## Achievements

- Invented the ClinCard, the first dedicated participant payment technology used across clinical trials in the US
- Founded and led Greenphire to a valuation above $1 billion on roughly $2.2 million of outside investment
- Founded Mural Health and raised $8M led by Bessemer Venture Partners, signing three of the top 15 global pharma companies
- Authored the letter to Congress that became the Harley Jacobsen Clinical Trial Participant Income Exemption Act

## Latest updates

- **2025-04** — Greenphire, the company Whitaker founded, completed its merger with Suvoda under Thoma Bravo ownership.
- **2025-01** — The Harley Jacobsen Clinical Trial Participant Income Exemption Act, which Whitaker initiated, was reintroduced in Congress.

## Links

- Website: https://muralhealth.com
- LinkedIn: http://www.linkedin.com/in/sam-whitaker
- Facebook: https://www.facebook.com/mural.health/

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Profile page: https://yespress.io/samuel-whitaker
Published by YesPress — https://yespress.io
Last updated: 2026-06-21