We benefit from a large and experienced team focused primarily on North American middle market buyouts, with approximately 100 professionals and an extensive network of executive relationships and corporate partnerships.
Ethan Chosnek is an associate at Thomas H. Lee Partners. Prior to joining Thomas H. Lee Partners, Mr. Chosnek worked as an investment banking associate in the Leveraged Finance Group at RBC Capital Markets in New York.
Mr. Chosnek holds a B.S. in Finance, cum laude, from the Warrington School of Business and a Masters in International Business from the Hough Graduate School of Business at the University of Florida.
Andrew Garske is a senior associate at Thomas H. Lee Partners. Prior to joining Thomas H. Lee Partners, Mr. Garske worked as an analyst in the Healthcare Group at UBS Investment Bank in New York.
Mr. Garske holds a B.S. in Management with concentrations in Finance and Accounting, summa cum laude, from the Carroll School of Management at Boston College.
Mr. Garske currently serves on the Private Equity / Venture Capital Associate Council at the United Way of Massachusetts Bay and Merrimack Valley.
Jim Gilbert is an executive advisor to Thomas H. Lee Partners. He brings forty years of experience in strategic and operations value creation for life sciences and healthcare companies as an investor, executive, board member and advisor.
In addition to his role at Thomas H. Lee Partners, Mr. Gilbert works at Flagship Pioneering where he supports the firm’s strategic development, value growth, nutritional health and health security activities. Prior to Flagship, Mr. Gilbert served as a senior advisor to the investment firm General Atlantic and as a senior operating executive at Welsh, Carson, Anderson & Stowe. Prior to those roles, Mr. Gilbert served as group president of the Global Cardiovascular Group and executive vice president of corporate strategy, business development, marketing and health economics and reimbursement at Boston Scientific. Prior to that, Mr. Gilbert worked at Bain & Company for over twenty-four years serving as chairman on the management committee, and the managing director of Bain’s Global Healthcare Practice with a focus on serving medical technology, biopharmaceuticals and life science tools clients. As a leading member of Global Strategy Practice at Bain, Mr. Gilbert was a published author and speaker, sharing insights on medical technology and pharmaceutical industry strategic trends and issues as well as “profit pool-based” and “strategic principled-based” strategy implementation.
Mr. Gilbert holds a B.S. in industrial engineering and operations research with high distinction from Cornell University School of Engineering and an M.B.A. with distinction from Harvard Business School.
Sam Hendler is a managing director at Thomas H. Lee Partners, responsible for Business Development, including sourcing strategy, market‐facing relationships and the development of Identified Sector Opportunities in the Healthcare industry group. In this role, Mr. Hendler brings his extensive experience advising both SaaS and technology‐enabled services companies on M&A transactions, private placements and corporate divestitures.
Prior to joining Thomas H. Lee Partners, Mr. Hendler served as a managing director at Harris Williams, where he established and managed the firm’s global healthcare IT practice. Earlier in his career, he worked as an associate with Quellos Private Capital Markets, L.P., and as a Mergers and Acquisitions Analyst with Broadview International, LLC.
Mr. Hendler holds an A.B., magna cum laude, in Politics from Princeton University and an M.B.A. from the Fuqua School of Business at Duke University.
John Hwang is an associate at Thomas H. Lee Partners. Prior to joining Thomas H. Lee Partners, Mr. Hwang worked as a private equity associate in the Healthcare Practice at Apax Partners in New York. Mr. Hwang formerly served as an analyst in the Healthcare Group at Lazard Frères & Co.
Mr. Hwang holds an A.B. in Economics from Harvard University.
Harris Hyman is a senior healthcare advisor to Thomas H. Lee Partners. He brings over thirty years of healthcare services experience and has a demonstrated track record of actively working with management teams to help build industry-leading companies. Mr. Hyman has served on the Board of Directors of numerous public and private healthcare companies, including MedAssets, United BioSource, Summit Behavioral Health, Intermedix and EyeSouth Partners.
Prior to joining Thomas H. Lee Partners, Mr. Hyman founded Northwood Healthcare Partners, a healthcare private investment firm. Prior to founding Northwood, Mr. Hyman was a Managing Director at Flexpoint Ford, an industry focused private equity firm where he helped lead the firm’s healthcare investment activity. Previously, he was a Managing Director of Credit Suisse First Boston where he served as Co-Head of Healthcare Mergers and Acquisitions.
Mr. Hyman holds a B.S. in Engineering, magna cum laude, from Princeton University and an M.B.A. from Harvard Business School.
Mr. Hyman has been active on a number of not-for-profit boards, including Trout Unlimited, where he has served as Treasurer and a member of the Board of Trustees for over 10 years, and MedStar Health, a $4 billion health system.
George Jiang is an associate at Thomas H. Lee Partners. Prior to joining Thomas H. Lee Partners, Mr. Jiang worked as an investment banking analyst in the Global Industrials Group at Goldman Sachs in New York.
Mr. Jiang holds a B.A. in Computer Science, magna cum laude, from Columbia University.
Jon Lange is a principal at Thomas H. Lee Partners. Mr. Lange is currently a director at Senior Home Care Holdings, Hospice Care Holdings, Intelligent Medical Objects and Smile Doctors.
Prior to joining Thomas H. Lee Partners, Mr. Lange worked at Elliott Management, an activist hedge fund based in New York, where he invested in healthcare, technology, and consumer companies. Previously, Mr. Lange worked in the North American private equity group at Bain Capital and at the Baupost Group, an investment firm based in Boston. Mr. Lange began his career at Goldman, Sachs & Co. in the technology, media, and telecommunications investment banking group.
Mr. Lange holds a BSE, summa cum laude, in Operations Research and Financial Engineering from Princeton University and an MBA from Harvard Business School.
Joshua M. Nelson is a managing director at Thomas H. Lee Partners. Prior to joining Thomas H. Lee Partners, Mr. Nelson worked at JPMorgan Partners, the private equity affiliate of JPMorgan Chase. Mr. Nelson also worked at McKinsey & Co. and The Beacon Group, LLC.
Mr. Nelson is currently a director of Adare Pharma Solutions, Agiliti Health, Inc., Autism Home Care Holdings, Inc., CSafe Global, Hospice Care, Intelligent Medical Objects, Nextech, Professional Physical Therapy (ProPT), Senior Home Care Holdings, Inc. and Smile Doctors. His prior directorships include 1-800 CONTACTS, Inc., Curo Health Services, Hawkeye Energy Holdings, Healthcare Staffing Services, Intermedix Corporation, Party City and Syneos Health (formerly inVentiv Health, Inc.).
Mr. Nelson holds an A.B., summa cum laude, in Politics from Princeton University and an M.B.A. with Honors from Harvard Business School.
Mallet Njonkem is an associate at Thomas H. Lee Partners. Prior to joining Thomas H. Lee Partners, Mr. Njonkem worked as an analyst in the Healthcare Group at UBS Investment Bank in New York.
Mr. Njonkem holds a B.A. in Economics and Mechanical Engineering from Yale University.
Mr. Njonkem is a Fellow at the Anti-Defamation League (ADL) New England’s Glass Leadership Institute (GLI), serves on the Yale Alumni Fund Board of Directors and is actively involved with Sponsors for Educational Opportunity (SEO) as an Alumni Mentor.”
Megan M. Preiner is a managing director at Thomas H. Lee Partners. Prior to joining THL, Ms. Preiner worked in the Media & Telecommunications Group at Credit Suisse in New York.
Ms. Preiner is currently a director of Adare Pharma Solutions, Agiliti Health, Inc., Autism Home Care Holdings, Inc., Healthcare Staffing Services, Hospice Care, Senior Home Care Holdings, Inc. and Smile Doctors. Her prior directorships include CSafe Global, Intermedix Corporation and Phillips Pet Food & Supplies.
Ms. Preiner holds a B.A. in Political Economy, cum laude, from Georgetown University and an M.B.A. from Harvard Business School.
Ms. Preiner serves as Treasurer on the Board of Directors of Friends of Excel Academy, a network of charter schools serving the greater Boston area.
Chuck Shea is an executive advisor to Thomas H. Lee Partners. He brings over twenty-five years of private equity operating experience to the Firm with a proven track record of building business services, outsourcing, and healthcare companies. Mr. Shea has provided strong leadership in a number of different roles including CEO, COO, EVP, Chairman, Vice Chairman, and board director and has consistently demonstrated the ability to convert strategy into results and effectively lead organizations.
Prior to joining Thomas H. Lee Partners, Mr. Shea was a managing director with Devonshire Investors, a private equity investment firm owned by Fidelity Investments with $6 billion in assets under management. He also played a key role as executive vice president in building Sodexo from a regional food service company into a market leading provider of outsourced services to hospitals, nursing homes, schools, and corporations over an eight-year period.
Mr. Shea is currently executive chairman of Senior Home Care Holdings and a director of Care Hospice. Previously he served as chairman of BostonCoach and Veritude. His prior directorships include Curo Health Services, Healthcare Staffing Services, System One, inVentiv Health, LogistiCare, Supplemental Health Care, Business Intelligence Advisors, Med e-Manager, Sebastians and J. Robert Scott.
Mr. Shea holds an M.B.A. from Harvard Business School and a B.S. from Salem State University.
Benjamin Stern is an associate at Thomas H. Lee Partners. Prior to joining Thomas H. Lee Partners, Mr. Stern worked as an investment banking analyst at Centerview Partners in New York.
Mr. Stern holds a B.S. in Business Administration, summa cum laude, with majors in Finance and Operations & Information Management and a minor in Biology from the McDonough School of Business at Georgetown University.
Nik Tikoo is a senior associate at Thomas H. Lee Partners. Prior to joining Thomas H. Lee Partners, Mr. Tikoo worked as an analyst in the Industrials Group at Lazard Frères & Co. in New York.
Mr. Tikoo holds a B.S. in Applied Economics and Management, magna cum laude, from Cornell University.
Shahab Vagefi is a managing director at Thomas H. Lee Partners. Mr. Vagefi is currently a director at Intelligent Medical Objects.
Prior to joining Thomas H. Lee Partners, Mr. Vagefi was a founding partner at Martis Capital where he principally focused on services and information technology investments in the healthcare industry. Prior to Martis Capital, Mr. Vagefi was a senior associate in the U.S. Growth Buyout fund at The Carlyle Group. Mr. Vagefi began his career in investment banking with Credit Suisse First Boston and JP Morgan H&Q.
Mr. Vagefi holds a joint BA-MA degree with Phi Beta Kappa honors in International Relations and International Economics from the Johns Hopkins University and the Paul H. Nitze School of Advanced International Studies (SAIS). He holds an M.B.A. from the Kellogg School of Management at Northwestern University.
Mr. Vagefi is a member of the Johns Hopkins Leadership Fellows.
Joshua Warren is a vice president at Thomas H. Lee Partners. Prior to joining Thomas H. Lee Partners, Dr. Warren worked as a vice president at BPEA, a private equity firm based in Boston, where he sourced, conducted diligence on, and managed healthcare investments. Previously, Dr. Warren was a project leader with Boston Consulting Group, where he specialized in helping private equity firms and strategic investors assess healthcare assets for acquisition.
Dr. Warren holds a B.A., cum laude, with distinction in Economics and Biology from the University of Pennsylvania, an M.D. from the Perelman School of Medicine at the University of Pennsylvania, and an M.B.A. from the Wharton School. He has presented first-author research at multiple international conferences and maintains an active medical license.
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