John Bartholdson is the co-founder and partner of Juniper Investment Company, LLC, a private investment management firm investing in publicly traded companies and private companies through concentrated ownership positions. His significant governance, finance, and transactional experience with multiple public and private companies make him active on several other boards and committees.  

Mr. Bartholdson presently serves as the Chairman of the board of directors of Theragenics Corporation, a medical device company serving the surgical products and prostate cancer treatment markets. Since 2019, he has been a member of the board of directors of Lincoln Educational Services Corporation, a public company and a leading provider of career education and training services, and presently serves on its Compensation, Audit and Nominating and Corporate Governance Committees. He also served as a member of the board of directors of Obagi Medical Products, Inc., a public specialty pharmaceutical company, until its acquisition by Valeant Pharmaceuticals in 2013.  

Mr. Bartholdson was a Partner of Stonington Partners. Prior to that, he was an analyst at Merrill Lynch Capital Partners. He received his B.A. from Duke University and his M.B.A. from Stanford Graduate School of Business.