Our People

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Work that is Personal

Because we work with people who are living with type 1 diabetes, our mission is personal. That connection helps fuel our passion and drives our commitment to serving the diabetes community.

Brittney, diagnosed 2008
Annie, diagnosed 2011
Blair, diagnosed 2000
Casual

Life at Tandem

Though we take our work extremely seriously, we remain true to our casual, uplifting, and innovative roots.

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We're creating new possibilities for people living with diabetes, their loved ones, and their healthcare providers.

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Briefcase

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Tom, Chief Scientist

Tandem Spotlight People Behind the Pump

The roots of our Tandem Family are strong — whether it’s a Tandem Diabetes Care employee or someone who relies on us to help better manage their diabetes. Meet some of the people behind the pump.

Briefcase

Executive Team

John Sheridan

President and Chief Executive Officer

Mr. Sheridan has served on our board of directors since June 2019 and as our President and Chief Executive Officer since March 2019. Prior to that, Mr. Sheridan served as our Executive Vice President and Chief Operating Officer since April 2013. Prior to joining us, Mr. Sheridan served as Chief Operating Officer of Rapiscan Systems, Inc., a provider of security equipment and systems, from March 2012 to February 2013. Mr. Sheridan served as Executive Vice President of Research and Development and Operations for Volcano Corporation, a medical technology company, from November 2004 to March 2010. From May 2002 to May 2004, Mr. Sheridan served as Executive Vice President of Operations at CardioNet, Inc., a medical technology company, now operating as BioTelemetry, Inc. (Nasdaq: BEAT). From March 1998 to May 2002, he served as Vice President of Operations at Digirad Corporation, a medical imaging company. Mr. Sheridan has served as a director of Acutus Medical, Inc. (Nasdaq: AFIB), an arrhythmia management company since March 2021. Mr. Sheridan holds a B.S. in Chemistry from the University of West Florida and an MBA from Boston University.

Rick Carpenter

Chief Technical Officer

Rick Carpenter has served as our Chief Technical Officer since November 2021. Before joining our Company, Mr. Carpenter served from February 2020 as the Senior Vice President of Engineering at Inseego Corporation, where he led the worldwide engineering team and was responsible for device hardware and software, cloud software, quality assurance, regulatory and product certification and technical account management. From April 2017 to January 2020, he was the General Manager of the IoMT Business and the Senior Director of Engineering at Capsule Technologies, a company that integrates medical devices and wearables into a secure medical grade system that collects data and provides it to healthcare professionals for patient monitoring. Prior to that, from May 2009 until March 2017, Mr. Carpenter served as the Senior Vice President of Engineering at Smith Micro Software. Earlier in his career, he held various engineering development and leadership roles at Nextwave Wireless, Sierra Wireless, General Dynamics, Motorola and Denso. Mr. Carpenter received a B.S. in Computer Science from The University of Texas Permian Basin, and completed coursework for an M.S. in Computer Science from The University of Texas at Arlington.

Tom Fox

Chief Human Resources Officer

Tom Fox was appointed Chief Human Resources Officer in August 2023. From August 2020 to July 2023, he served as Senior Vice President, Human Resources and Organizational Development. From August 2017 to July 2020, he served as Vice President, Human Resources. Prior to this, he served as Senior Director of our Human Resources Department. Mr. Fox has more than 20 years of experience in Human Resources management. Prior to joining Tandem, Mr. Fox served as Director of Human Resources for the Oncology-Genoptix Division of Novartis Pharmaceuticals. Before that, he held various HR leadership positions including Director of Human Resources for the West Division of BDO, USA LLP; Director of HR Client Services for Option One Mortgage Company (a subsidiary of H&R Block Corp.) and Director of Labor and Employee Relations at The Walt Disney Company, Disneyland Resort. Mr. Fox began his career at Chevron Corporation and holds a BS in Business Administration from California State University, Fresno and a MS in Labor Relations and Human Resources Management from Michigan State University.

Elizabeth Gasser

Executive Vice President and Chief Strategy and Product Officer

Elizabeth Gasser has served as our Executive Vice President and Chief Strategy and Product Officer since November 2023, and before served as our Executive Vice President and Chief Strategy Officer since June 2021. Ms. Gasser is responsible for the Company’s strategy, corporate development, product management, behavioral sciences, and competitive intelligence functions. She previously served as our Executive Vice President, Strategy and Corporate Development since January 2020. Before joining our Company, Ms. Gasser served from June 2017 as an independent adviser providing strategic and corporate development solutions to boards and executive teams. From January 2016 to June 2017, she was Vice President of Corporate Strategy at QUALCOMM Technologies, Inc. (QTI), a subsidiary of QUALCOMM Incorporated (Nasdaq: QCOM), a global leader in the development and commercialization of technologies and products used in mobile devices and other wireless products. Before that, from November 2012 to January 2016 she was Vice President of Strategic Development at QTI, after serving in other strategic related roles of increasing responsibility beginning in 2006. Ms. Gasser holds a B.A. and an M.A. in Economics from the University of Cambridge.

Shannon Hansen

Executive Vice President, Chief Legal, Privacy and Compliance Officer and Secretary

Shannon Hansen has served as our Executive Vice President, Chief Legal, Privacy & Compliance Officer and Secretary since April 2024, and as our Chief Legal, Privacy & Compliance Officer and Secretary since August 2023. Ms. Hansen joined the Company as Senior Vice President, General Counsel, Chief Compliance Officer and Secretary in January 2022 and throughout her tenure, she has maintained responsibility for the Company's legal, compliance and privacy functions. Before joining our Company, Ms. Hansen served as General Counsel, Corporate Secretary and Chief Privacy Officer at Alto Pharmacy from April 2020 to September 2021, where she oversaw the development of the legal, privacy and compliance functions. Before her role at Alto Pharmacy, she held various leadership roles at Abbott, including Division Vice President & Associate General Counsel, Patents from June 2017 to February 2020, as well as other leadership roles for the Diabetes, Vascular and Structural Heart Divisions from May 2009 to June 2017. In August 2021, Ms. Hansen began serving as an Independent External Audit and Supervisory Board Member for PHC Holdings Corporation. Earlier in her career, she was a partner at Kirkland & Ellis LLP, an Associate Solicitor at the United States Patent and Trademark Office and a process engineer at DuPont. Ms. Hansen holds a B.S. in Chemical Engineering from Carnegie Mellon University, and a J.D. from Stanford Law School.

Jean-Claude “JC” Kyrillos

Executive Vice President and Chief Operating Officer
Jean-Claude “JC” Kyrillos has served as our Executive Vice President and Chief Operating Officer since June 2024 and is responsible for the Company’s manufacturing operations, supply chain, quality, regulatory and program management functions.  Mr. Kyrillos has more than 20 years of executive leadership experience in the medical device and digital health industries.  Before joining our Company, he served in operating company president roles at Envista Holdings from February 2020 to June 2023, most recently as President of Diagnostics and Digital Solutions.  Prior to that, Mr. Kyrillos was Senior Vice President and General Manager at Qualcomm Life, the healthcare division at Qualcomm, from May 2016 to February 2019.  Before his time at Qualcomm, Mr. Kyrillos served as Senior Vice President and General Manager of infusion solutions at Becton Dickinson from August 2011 to May 2016.  Prior to that, Mr. Kyrillos held leadership positions at ResMed Inc. from January 2008 to August 2011, most recently serving as President of ResMed Ventures and Initiatives.  Mr. Kyrillos has served as an independent board director of San Deigo Blood Bank since January 2016 and as Chair from January 2020 to December 2022.  Mr. Kyrillos received a BA with Honors in History from Colgate University and a MBA from Harvard Business School.

James Leal

Chief Manufacturing Officer

James Leal, Ph.D. has served as our Chief Manufacturing Officer since April 2023, and before that served as our Senior Vice President, Operations since August 2017. Dr. Leal joined our Company in October 2010 as Vice President, Operations. Previously, Dr. Leal was the Vice President of Manufacturing and Field Support for Volcano Corporation and held Director roles with CardioNet, Inc. and Digirad Corporation. Earlier in his career, he held Senior Engineering roles with FlipChip Technologies and Hughes Aircraft Company. He has won several awards including a Hughes Aircraft Doctoral and Masters Fellowship and was a recognized nominee for Most Promising Hispanic Engineer of the Year Award. Dr. Leal is a University of Arizona graduate holding a B.S. in Metallurgical Engineering, and both an M.S. and a Ph.D. in Materials Science and Engineering.

Susan Morrison

Executive Vice President and Chief Administrative Officer

Susan Morrison has served as an Executive Vice President since December 2017 and as our Chief Administrative Officer since September 2013, and is responsible for the Company’s investor relations, corporate communications, human resources and facilities functions. Before that time, she served in successive leadership positions for our Company since November 2007, including Vice President, Human Resources, Corporate and Investor Relations and Director, Corporate and Investor Relations. Prior to joining our Company, Ms. Morrison held various positions in Corporate and Investor Relations at Biosite from August 2003 through November 2007. Ms. Morrison holds a B.A. in Public Relations from Western Michigan University.

Mark Novara

Mark Novara, Executive Vice President and Chief Commercial Officer

Mark Novara has served as our Executive Vice President and Chief Commercial Officer since November 2023. Mr. Novara is an executive with nearly 25 years of general management, strategy and marketing experience in the medical device, life science and pharmaceutical industries. Before joining our Company, he served as Senior Advisor in the Medical Technology/Life Science practice at McKinsey & Company since February 2023. Before that time, Mr. Novara held executive positions at Becton Dickinson for more than 11 years, most recently as a Worldwide Vice President/General Manager in the Medication Delivery Solutions business unit from June 2020 to December 2022. He also served as Senior Vice President, Global Strategic Marketing for two of BD’s segments, Medical from May 2018 to June 2020, and, Life Sciences from December 2015 to May 2018. Mr. Novara was also a Worldwide Vice President/General Manager in the Diabetes Care business unit from November 2013 to December 2015, and, Director of Strategic Marketing and Business Development in the Pharmaceutical Systems business unit from July 2011 to November 2013. He also held leadership positions with Hoffman-La Roche and Sanofi-Aventis. Mr. Novara received a BS in Biology from Villanova University and a Masters in Healthcare Management from Columbia University.

Jordan Pinsker, MD

Chief Medical Officer

Dr. Jordan Pinsker has served as our Chief Medical Officer since November 2023 after joining the Company as Vice President and Medical Director in April 2021. He is a leading pediatric endocrinologist and prominent thought leader in artificial pancreas research. Dr. Pinsker joined Tandem from Sansum Diabetes Research Institute in Santa Barbara, California, where he served as the Director of Artificial Pancreas Technology since 2018. In his role at Sansum, he was a lead investigator in numerous clinical trials on automated insulin delivery systems, including Basal-IQ technology and Control-IQ technology. Prior to this, he was Chief of Pediatric Endocrinology at Tripler Army Medical Center in Hawaii. Dr. Pinsker served as a physician in the United States Army in both Active Duty and in the California Army National Guard for more than 20 years. He completed a combined seven-year BS/MD program with Union College and Albany Medical College in New York. Dr. Pinsker is board certified in Clinical Informatics, Pediatric Endocrinology, and General Pediatrics. You can read about many of his studies on his Google Scholar page.

Leigh Vosseller

Executive Vice President and Chief Financial Officer

Leigh Vosseller has served as our Executive Vice President, Chief Financial Officer, and Treasurer since June 2018, and served as Senior Vice President, Chief Financial Officer and Treasurer from January 2018 to May 2018. Ms. Vosseller is our principal financial and accounting officer. She joined us as Vice President of Finance in 2013 and was promoted to Senior Vice President of Finance in August 2017. Before that time, she served as Vice President and Chief Financial Officer at Genoptix, beginning in 2011, after initially joining Genoptix in 2008. Before that she held a senior finance position at Biosite where she played a key role in developing the financial and administrative infrastructure for international expansion. Since January 2021, Ms. Vosseller has served as a director and chair of the finance committee of Girls Inc. of San Diego, a non-profit organization that provides STEM-focused, research-based programming to underserved girls in the community. Ms. Vosseller is a certified public accountant (inactive) and holds a B.S. in Accounting from Missouri State University.

Board of Directors

Board of Directors

Rebecca Robertson

Chair
Ms. Robertson has served as Chair of our board of directors since March 2023, and as a member of our board of directors since January 2019. Ms. Robertson is a founder and General Partner at Versant Ventures where she has specialized in investing in the areas of medical devices and diagnostics since 1999. In addition, through Longridge Business Advisors, she has provided business advisory services and board services since April 2017. Prior to Versant, she served as Senior Vice President at Chiron Diagnostics, a division of Chiron Corporation, where she had responsibility for the critical care business unit in addition to leading the division’s business development efforts. Prior to joining Chiron, Ms. Robertson was a co-founder and Vice President at Egis, a consumer products company, and held senior management positions in operations and finance at Lifescan, a Johnson & Johnson Company. Ms. Robertson holds a B.S. in Chemical Engineering from Cornell University.

Dick Allen

Director
Mr. Allen has served as a member of our board of directors since July 2007. He previously served as Lead Independent Director from March 2019 to February 2023, and as Chair of our board of directors from August 2007 to January 2013 and from January 2016 to February 2019. Mr. Allen is directly engaged in the diabetes community through his personal involvement with JDRF, a nonprofit diabetes research organization, and the Mary & Dick Allen Diabetes Center at Hoag Memorial Hospital Presbyterian. Mr. Allen served as a member of the International Board of Directors of JDRF from July 2008 to June 2014, and as its Chair from July 2012 to June 2014. Mr. Allen has more than 50 years of experience in the health care industry and was previously the President of DIMA Ventures, Inc., a private investment firm providing seed capital and board-level support for start-up companies in the healthcare field. He was a co-founder and Vice President of Caremark, Inc., a home infusion therapy company later acquired by Baxter International. He was also a co-founder and director of Pyxis Corporation, later acquired by Cardinal Health, Inc. Mr. Allen received a B.S. (cum laude) in Industrial Administration from Yale University and an M.B.A. from Stanford University Graduate School of Business where he served on the faculty as a Lecturer in Strategic Management for 13 years.

Kim Blickenstaff

Chair Emeritus
Mr. Blickenstaff was named Chair Emeritus in May 2024. Prior to that time, he served as a member of our board of directors since September 2007. From March 2020 to February 2023 he served as Chair of our board of directors, after holding the position of Executive Chair since March 2019. Prior to serving as Executive Chair, Mr. Blickenstaff served as our President and Chief Executive Officer from September 2007 to March 2019. He has been a member of our board of directors since September 2007. Prior to joining us, Mr. Blickenstaff served as Chair and Chief Executive Officer of Biosite Incorporated, a provider of medical diagnostic products, from 1988 until its acquisition by Inverness Medical Innovations, Inc. in June 2007. Mr. Blickenstaff previously served as a director of Medivation, Inc., a biotechnology company, from 2005 to 2016, until its acquisition by Pfizer, and as a director of DexCom, Inc. (Nasdaq: DXCM), a provider of continuous glucose monitoring systems, from June 2001 to September 2007. Mr. Blickenstaff serves as a director and member of the compensation and audit committees of Nuvation Bio Inc. (NYSE: NUVB), an oncology biopharmaceutical therapy company. Mr. Blickenstaff was formerly a certified public accountant and has more than 20 years of experience overseeing the preparation of financial statements. He holds a B.A. in Political Science from Loyola University, Chicago, and an M.B.A. from the Graduate School of Business, Loyola University, Chicago.

Myoungil Cha

Director
Mr. Cha has served on our board of directors since June 2022. He has more than 19 years of global experience across the healthcare value chain. Mr. Cha currently serves as Chief Product Officer at Verily where he leads product development. Prior to joining Verily in March 2024, he served as President and Chief Strategy Officer at Carbon Health from June 2021 to February 2024. He served as Head of Health Strategic Initiatives at Apple from August 2015 to May 2021 where he developed and led product initiatives and global strategic partnerships. Earlier in his career, Mr. Cha was a Principal and Co-Leader of the West Coast Strategy and Corporate Finance Practice as well as Co-Leader of the Healthcare Investor Practice at McKinsey & Company. Mr. Cha holds a JD from Harvard Law School, an MBA from Harvard Business School and an AB in Biochemical Sciences from Harvard College.

Peyton Howell

Director
Ms. Howell joined our board of directors in August 2020 and brings more than 30 years of pharma services and healthcare industry experience. Ms. Howell was appointed Chief Executive Officer of Parexel, a leading global clinical research organization servicing the life sciences industry, in May 2024 and also serves on the company’s Board of Directors. She previously served as Parexel's Chief Operating and Growth Officer since September 2022, and as its Chief Commercial and Strategy Officer since May 2018. Prior to joining Parexel, Ms. Howell’s healthcare industry experience included senior leadership positions with AmerisourceBergen (now Cencora), a Fortune 20 company, most recently as President for Health Systems and Specialty Care Solutions. Prior to AmerisourceBergen, Ms. Howell was a founder of Lash Group and served as President for nearly 10 years following its acquisition by AmerisourceBergen. Ms. Howell currently serves as chairperson of the Association of Clinical Research Organizations (ACRO). She holds a B.A. in Health Communications from the University of Illinois at Urbana-Champaign and a Master of Healthcare Administration from The Ohio State University

Joao Malagueira

Director
Mr. Malagueira has served on our board of directors since June 2022. He brings more than 25 years of experience in diabetes, medical devices and diagnostics solutions businesses with global corporations. Mr. Malagueira is currently President for three divisions at Hologic and responsible for the entire portfolio in the EMEA. Prior to starting this role in October 2023, he served as International Vice President, for EMEA for the three divisions at Hologic, since January 2019, and as International Vice President, for EMEA and Canada, for the Hologic Diagnostics Solutions division, from June 2015 to December 2018. He possesses extensive experience and proven success of go-to-market models and strategies in Europe, Africa, CIS, and the Middle East. Prior to Hologic, Mr. Malagueira enjoyed more than 15 years at Johnson & Johnson, in commercial leading roles across EMEA, where he led successful turnarounds and market share growth of the diabetes solutions businesses, LifeScan and Animas. Mr. Malagueira holds an MBA and an Advanced Degree in Marketing from Catolica Lisbon School of Business and Economics. He holds a MS in Pharmaceutical Sciences and Clinical Analysis from University of Lisbon.

Kathleen McGroddy-Goetz

Director
Dr. McGroddy-Goetz has served on our board of directors since June 2020. She has more than 25 years of experience leading global teams across business development, strategy, research and development, and product management. She has commercialized pioneering technologies spanning from microelectronics through cloud, advanced data analytics, artificial intelligence, hardware, software, and middleware with an emphasis on healthcare and life sciences applications. From October 2018 through June 2021, Dr. McGroddy-Goetz served as the Global Head of Strategic Partnerships at Medidata Solutions, a Dassault Systemès Company, where she also concurrently held other strategy, alliances and marketing executive roles. Previously, she held various leadership positions at IBM beginning in 1992, and most recently was Vice President, Strategy and Innovation, IBM Watson Health. Dr. McGroddy-Goetz received a BS in Physics from SUNY Binghamton and a PhD in Molecular Biophysics from Cornell University.

John Sheridan

President and Chief Executive Officer

Mr. Sheridan has served on our board of directors since June 2019 and as our President and Chief Executive Officer since March 2019. Prior to that, Mr. Sheridan served as our Executive Vice President and Chief Operating Officer since April 2013. Prior to joining us, Mr. Sheridan served as Chief Operating Officer of Rapiscan Systems, Inc., a provider of security equipment and systems, from March 2012 to February 2013. Mr. Sheridan served as Executive Vice President of Research and Development and Operations for Volcano Corporation, a medical technology company, from November 2004 to March 2010. From May 2002 to May 2004, Mr. Sheridan served as Executive Vice President of Operations at CardioNet, Inc., a medical technology company, now operating as BioTelemetry, Inc. (Nasdaq: BEAT). From March 1998 to May 2002, he served as Vice President of Operations at Digirad Corporation, a medical imaging company. Mr. Sheridan has served as a director of Acutus Medical, Inc. (Nasdaq: AFIB), an arrhythmia management company since March 2021. Mr. Sheridan holds a B.S. in Chemistry from the University of West Florida and an MBA from Boston University.

Rajwant Sodhi

Director

Mr. Sodhi has served on our board of directors since January 2021. He has more than 25 years of experience in global informatics, software service technology and ecommerce business solutions, across the healthcare, financial, and telecom industries. Previously he served as the President of ResMed’s software as a service (SaaS) business from July 2017 to August 2021, and prior to that as President of Healthcare Informatics (HI) leading the development of ResMed’s HI solutions and ResMed itself to its current standing as a global digital health leader, with an expanding portfolio of device- and SaaS-based offerings. He joined ResMed in 2012 through the acquisition of Umbian Inc. of which he was co-founder and President. Before ResMed and Umbian, Mr. Sodhi worked in the financial services industry, designing, developing and managing SaaS solutions. He was Senior Vice President of Business Development and Chief Technology Officer for Skipjack Financial Services from 2005 to 2009, and co-founder and Chief Technology Officer of TransActive Ecommerce Solutions from 2000 to 2005. Mr. Sodhi is on the board of directors of Forefront Dermatology and EyeCare Partners. Mr. Sodhi holds an MBA and a B.S. in Mathematics and Statistics from Dalhousie University in Halifax, Nova Scotia.

Christopher Twomey

Director

Mr. Twomey has served on our board of directors since July 2013. Mr. Twomey has served as a director and chair of the audit committee of Bionano Genomics (Nasdaq: BNGO), a life sciences genome analysis instrumentation company since July 2018. From March 1990 until his retirement in 2007, Mr. Twomey held various positions with Biosite, most recently serving as Senior Vice President, Finance and Chief Financial Officer. From 1981 to 1990, Mr. Twomey worked for Ernst & Young LLP, where he served as an Audit Manager. He previously served as a director and chair of the audit committee for public companies, such as Senomyx and Cadence Pharmaceuticals, prior to their acquisitions. Mr. Twomey holds a B.A. in Business Economics from the University of California, Santa Barbara.