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.

Robert McNamara

Director, Chair of the Compensation Committee, Audit Committee

Robert McNamara served as Executive Vice President of LDR Holdings since January 2013 and as the Chief Financial Officer for LDR Holdings since April 2012 up until its acquisition by Zimmer Biomet in 2016. From September 2010 to April 2012, Mr. McNamara served as a financial consultant, working primarily in the medical device and biotechnology industries. From May 2009 to September 2010, he served as Chief Financial Officer of Purfresh, Inc., a privately held clean technology company. In addition, Mr. McNamara has previously served as the Senior Vice President and Chief Financial Officer for publicly traded medical device companies Accuray, Inc., Somnus Medical Technologies and Target Therapeutics, was a member of the Board of Directors of Northstar Neurosciences and is the former Mayor of Menlo Park, California. Mr. McNamara holds a B.S. in Accounting from the University of San Francisco and an M.B.A. in Finance from The Wharton School of the University of Pennsylvania. Mr. McNamara brings valuable finance and accounting experience in the medical device industry to the Board of Directors.

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.

Lori Mitchell-Keller

Director, Member of the Compensation and Audit Committees

Ms. Mitchell-Keller has over 30 years of experience in the software, consumer goods, wholesale distribution and retail industries, including more than 15 years focused on market strategy and market development. From May 2020 to November 2022, she served as Vice President and Global General Manager, Industry Solutions, at Google Cloud, a company offering a suite of cloud computing services. From June 2018 to May 2020, Ms. Mitchell-Keller served as the President and Global General Manager, SAP Industries, at SAP Labs, LLC, a software company, where she previously served in several other roles since 2007, including EVP and Global General Manager, Consumer Industries; SVP and Global Head, Retail Industry Business Unit; SVP, LoB Solution Management Idea-to-Delivery; SVP, Suite Solution Management, Supply Chain, Product Lifecycle Management and Manufacturing; and SVP, Business Suite Applications. Prior to SAP, Ms. Mitchell-Keller held a variety of executive positions at Manugistics, a software company, and Baxter/Allegiance Healthcare. Ms. Mitchell-Keller currently serves as a member of the board of directors of Mitratech, a software company, and Madison House Autism Foundation. She previously served on the boards of directors of the Food Marketing Institute and the National Retail Federation. Ms. Mitchell-Keller holds a Master of Business Administration in Management/Strategy and Marketing from the J.L. Kellogg Graduate School of Management at Northwestern University, a Master of Science in Operations Research from Stanford University, and a Bachelor of Science in Industrial Engineering from Iowa State University.