Tabula Rasa HealthCare, Inc. announced that co-founders Dr. Calvin H. Knowlton, BSc Pharm, MDiv, PhD, ScD (hon), Board Chairman, and Dr. Orsula V. Knowlton, PharmD, MBA, Co-President and Chief Marketing and New Business Development Officer, will retire from TRHC and step down as members of the Board of Directors, effective immediately. Director Michael Purcell has been named Independent Chair of the Board. Michael Purcell has served as an independent director on the Board of TRHC since 2018 and has served as Chair of the Audit Committee since 2019.

He has also served on the Compensation and Nominating & Governance Committees. Mr. Purcell was an Audit Partner at Deloitte and Touche for 36 years, serving emerging growth companies as well as large multi-national public companies. Mr. Purcell now serves as a consultant to various companies and venture funds.

He has significant Board expertise and is the lead director and Audit Chair for International Money Express and several other for-profit entities.