| Mark A. Schallenberger |
Mark A. Schallenberger is currently the Chief Operating Officer at Xtant Medical Holdings, Inc. He previously worked as the Senior Director-Marketing & Product Development at DCI Donor Services Tissue Bank from 2017 to 2019, and as the Chief Operations Officer at Surgenex LLC from 2019 to 2023. Mr. Schallenberger has a graduate degree from The Scripps Research Institute and an undergraduate degree from The University of Montana. |
| Kevin D. Brandt |
Kevin D. Brandt is currently the Chief Commercial Officer & Senior Vice President at Xtant Medical Holdings, Inc. He previously worked as the Senior Director at US Spine, Inc. from 2000 to 2001, and as the President-Osteokinetics Division at Stryker Corp. from 2002 to 2012. From 2012 to 2018, he was the Chief Commercial Officer-Domestic Direct & EVP at Surgalign Spine Technologies, Inc. Brandt holds an MBA from Adelphi University and an undergraduate degree from New York Institute of Technology. |
| Stavros G. Vizirgianakis |
Stavros G. Vizirgianakis founded Surgical Innovations (Pty) Ltd. in 2006. Mr. Vizirgianakis also currently works at Xtant Medical Holdings, Inc., as Chairman, Apyx Medical Corp., as Chairman from 2024, and Medinotec, Inc., as Independent Director from 2022. Mr. Vizirgianakis also formerly worked at Misonix, Inc., as Chief Executive Officer & Director from 2019 to 2021, United States Surgical Corp., as Sales Director, Tenaxis Medical, Inc., as Director, Ascendis Health Ltd., as Managing Director from 2014 to 2016, Bioventus LLC, as Director, Bioventus, Inc., as Independent Director from 2021 to 2022, MD Solutions Australasia Pty Ltd., as Partner, Applied Bio-Surgical, as Principal, and Covidien (Pty) Ltd. (South Africa), as General Manager-South Africa. Mr. Vizirgianakis received his undergraduate degree from the University of South Africa. |
| Scott C. Neils |
Scott C. Neils is currently the Chief Financial Officer at Xtant Medical Holdings, Inc. He previously worked as a Manager-Audit at Grant Thornton LLP from 2007 to 2015 and as a Senior Manager-Audit at Baker Tilly US LLP from 2015 to 2019. Mr. Neils completed his undergraduate and graduate degrees at The Curtis L. Carlson School of Management. |
| Sean E. Browne |
Sean E. Browne is currently the President, Chief Executive Officer & Director at Xtant Medical Holdings, Inc. He is also the Executive Vice President-Sales & Marketing at Integra York PA, Inc. Previously, he served as the Chief Executive Officer at Neuro Resource Group, Inc. from 2012 to 2016. He has also held positions at Baxter Healthcare Corp., McKesson Corp., Integra LifeSciences Holdings Corp., Integra York PA, Inc., Esurg Corp., Mckesson Health Solutions LLC, CCS Medical, Inc., and The Kini Group LLC. Mr. Browne received his undergraduate degree from Boston University and his graduate degree from Northwestern University. He also holds an MBA from Kellogg School of Management. |
| Jonn R. Beeson |
Jonn R. Beeson is currently an Independent Director at Xtant Medical Holdings, Inc. and a Partner at Jones Day LP. Previously, he worked as a Corporate Officer at Latham & Watkins LLP. He holds a graduate degree from the University of Pennsylvania and an undergraduate degree from the University of California, Irvine. |
| Robert E. McNamara |
Robert E. McNamara is currently serving as an Independent Director at Axonics, Inc., Xtant Medical Holdings, Inc., and AVITA Medical, Inc. He previously held positions as the Chief Executive Officer at InDefense, Inc., Director at Northstar Neuroscience, Inc., Independent Director at Alpha Teknova, Inc., Chief Financial Officer at Target Therapeutics, Inc., Chief Financial Officer & Senior Vice President at Somnus Medical Technologies, Inc., Chief Financial Officer & Senior Vice President at Recourse Technologies, Inc., Chief Financial Officer at Purfresh Clean, Inc., Chief Financial Officer & Executive Vice President at LDR Holding Corp., Chief Financial Officer at ebDirect, Inc., and Chief Financial Officer & Senior Vice President at Accuray, Inc. McNamara obtained an undergraduate degree from the University of San Francisco and an MBA from The Wharton School of the University of Pennsylvania. |
| John K. Bakewell |
John K. Bakewell is currently an Independent Director at Treace Medical Concepts, Inc., Impulse Dynamics NV, Xtant Medical Holdings, Inc., and Neuronetics, Inc. He previously served as a Director at ev3, Inc., Entellus Medical, Inc., Corindus Vascular Robotics, Inc., and Keystone Dental, Inc. He also held the position of Chief Financial Officer & VP-Administration at LivaNova USA, Inc., EXACT Sciences Corp., Wright Medical Group, Inc., Altra Energy Technologies, Inc., Interline Brands, Inc., Regionalcare Hospital Partners LLC, Zeos International Ltd, Lantheus Holdings, Inc., and Lantheus Medical Imaging, Inc. Mr. Bakewell obtained his undergraduate degree from the University of Northern Iowa. |
| Lori Mitchell-Keller |
Lori Mitchell-Keller is an Independent Director at Xtant Medical Holdings, Inc. She previously worked as a Director at National Retail Federation, Inc. and Food Marketplace, Inc. She also held positions as SVP-Product Management & Marketing at Blue Yonder Group, Inc., Senior Vice President-Product Development at Manugistics Group, Inc., and SVP & Head-Global Retail Industry Business Unit at SAP SE. Ms. Mitchell-Keller holds graduate degrees from Stanford University and Northwestern University, as well as an undergraduate degree from Iowa State University. |
