Xtant Medical

Board of Directors

Stavros G. Vizirgianakis

Chair of the Board of Directors, Corporate Governance and Nominating Committee

Stavros G. Vizirgianakis was the former Chief Executive Officer of Misonix (MSON)from 2016- 2021. He has a distinguished career in the medical devices field having worked for United States Surgical Corporation as director of sales for sub-Saharan Africa and later Tyco Healthcare in the capacity of General Manager South Africa. In 2006, Vizirgianakis co-founded Surgical Innovations, one of the largest privately owned medical device distributors in the African region which later became part of the Ascendis Health group.
He also served on the boards of Tenaxis Medical and Bioventus. Current board positions include Tally Surgical and Theragenics. He is a strategic investor and advisor to numerous startups and established companies in the medical device field. Vizirgianakis has a Degree in Commerce from the University of South Africa.

John Bakewell

Director, Chair of the Audit Committee, Corporate Governance and Nominating Committee

John K. Bakewell is a consultant to the medical technology industry. Mr. Bakewell served as the Chief Financial Officer of Exact Sciences Corporation, a molecular diagnostics company, from January 2016 to November 2016. Mr. Bakewell previously served as the Chief Financial Officer of Lantheus Holdings, Inc., a diagnostic medical imaging company, from June 2014 to December 2015 and as Chief Financial Officer of Interline Brands, Inc., a distributor and direct marketer of broad-line maintenance, repair and operations products, from June 2013 to May 2014. Mr. Bakewell previously was the Executive Vice President and Chief Financial Officer of Regional Care Hospital Partners, an owner and operator of non-urban hospitals, from January 2010 to December 2011. In addition, Mr. Bakewell held the position of Chief Financial Officer with Wright Medical Group, Inc., an orthopaedic medical device company, from 2000 to 2009, with Altra Energy Technologies, Inc. from 1998 to 2000, with Cyberonics, Inc. from 1993 to 1998 and with Zeos International, Ltd. from 1990 to 1993. Mr. Bakewell has also served as a member of the board of directors of Entellus Medical, Inc., a public medical technology company that designs and manufactures products for the treatment of chronic and recurrent sinusitis in adults and children, since July 2015, and as a member of the board of directors of Corindus Vascular Robotics, Inc., a public medical technology company and the global leader in robotic-assisted vascular interventions, since July 2017. Since July 2008, Mr. Bakewell has served on the board of directors of Keystone Dental, Inc., a private medical device company,. Mr. Bakewell holds a Bachelor of Arts in Accounting from the University of Northern Iowa and is a certified public accountant (inactive). Mr. Bakewell’s financial experience as a chief financial officer of several publicly traded medical technology companies and his background and sophistication in finance and accounting contributes valuable experience to our Board of Directors.

Sean Browne

President and Chief Executive Officer

Mr. Browne has over three decades of expertise in the medical device and healthcare industry. Most recently, he served as Chief Revenue Officer of CCS Medical, Inc., a provider of home delivery medical supplies. Previously, Mr. Browne served as Chief Operating Officer of The Kini Group, an integrated cloud-based software analytics and advisory firm; President and Chief Executive Officer and a director of Neuro Resource Group, a venture start-up medical device company that was sold to a strategic buyer; President, Miltex Surgical Instrument Division for Integra LifeSciences Corporation, a publicly held medical device company that acquired Miltex Holdings, Inc.; Vice President, Sales and Marketing of Esurg.com, an e-commerce company serving physician and ambulatory surgery markets; Senior Vice President, Health Systems Division of McKesson Corporation; and held various positions with increasing responsibility at Baxter Healthcare. Mr. Browne holds a Masters of Business Administration from the Kellogg School of Management at Northwestern University and a Bachelor of Science degree, with a major in Finance and minor in Statistics, from Boston University.

Abhinav (Abi) Jain

Compensation Committee and Nominating and Corporate Governance Committee

Since July 2019, Mr. Jain has served as an Analyst at Nantahala Capital Management, LLC, an investment management company focused on investments in various sectors, including specialty and generic pharmaceuticals and medtech, and the beneficial owner of 49.1% of the outstanding common stock of the Company (“Nantahala”). From 2015 to 2017, Mr. Jain was an Associate at Angelo, Gordon & Co., an alternative asset manager. At Angelo, Gordon & Co., Mr. Jain focused on private equity and structured credit investments. Mr. Jain currently serves as a member of the board of directors of Aytu Biopharma, Inc. (NASDAQ: AYTU), a specialty pharmaceutical company, and Talphera, Inc. (NASDAQ: TLPH), a specialty pharmaceutical company. He graduated from Massachusetts Institute of Technology in 2012 with an S.B. in Chemical-Biological Engineering and from The Wharton School of the University of Pennsylvania in 2019 with an M.B.A. with honors in Finance and Entrepreneurial Management. Mr. Jain’s financial expertise and experience contributes valuable experience to the Board.

Jonn Beeson

Director, Chair of the Nominating and Corporate Governance Committee, Compensation Committee

Mr. Beeson is a partner with Jones Day, a global law firm, and has been practicing corporate law since 1996. His practice focuses on mergers and acquisitions, divestitures, takeovers, capital raising, securities transactions, corporate governance and stockholder activism matters. Mr. Beeson represents a variety of corporate clients and is most active in the life sciences, technology and software industries, with significant experience working with a wide range of medical device companies. Mr. Beeson holds a Bachelor of Science degree from the University of California, Irvine, and a Juris Doctor from the University of Pennsylvania.

Tyler Lipschultz

Audit Committee and Compensation Committee

Mr. Lipschultz has over 35 years of leadership experience in orthopaedics, spine, and biologics. He currently serves as President of LocateBio, Inc., a U.S. subsidiary of a biotechnology company in England, a position he has held since November 2024. Prior to LocateBio, Mr. Lipschultz served as President, Global Biologics at Orthofix Medical Inc., a global medical technology company, from January 2023 until July 2025. Prior to Orthofix, Mr. Lipschultz served as Senior Vice President, Orthobiologics and Business Development of SeaSpine Holdings Corporation, a global medical technology company focused on surgical solutions for the treatment of spinal disorders, from February 2018 until its acquisition by Orthofix in January 2023, and prior to that position, served as Vice President, Orthobiologics and Business Development of SeaSpine from July 2015 to February 2018. From June 2008 to March 2015, Mr. Lipschultz held positions of increasing responsibility at NuVasive, Inc., a publicly traded medical device company, most recently serving as its Executive Vice President, Global Operations, and, prior to that, Executive Vice President, Biologics. Prior to joining NuVasive, Mr. Lipschultz was a director at ProtoStar, a medical device incubator that formed Annulex, CVRx, and VERTx, which he co-founded. In 2002, VERTx merged with Spine Wave, where Mr. Lipschultz subsequently served in a variety of roles, including Executive Vice President and General Manager of the mechanical business. Prior to ProtoStar, Mr. Lipschultz held the position of Equity Research Analyst at Piper Jaffray and served in various marketing/product management roles at Stryker Corporation, Smith & Nephew plc, and DePuy. Mr. Lipschultz received a B.A. in economics and business administration from Kalamazoo College and an M.B.A. from the executive program at Krannert School of Management at Purdue University. Mr. Lipschultz’s substantial experience in the biologics, orthopaedics, and spine industries contributes valuable experience to the Board.