John Sheridan has served as our President and Chief Executive Officer since March 2019 and as a member of our Board of Directors since June 2019. He previously served as our Executive Vice President and Chief Operating Officer since April 2013. Prior to joining our company, 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 (NASDAQ: VOLC), 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. From March 1998 to May 2002, he served as Vice President of Operations at Digirad Corporation, a medical imaging company. Mr. Sheridan holds a B.S. in Chemistry from the University of West Florida and an M.B.A. from Boston University.
Ms. Robertson has served on our board of directors since January 2019. Ms. Robertson is a founder and has served as Managing Director of Versant Ventures, where she specializes in medical devices and diagnostics, since November 1999. In addition, through Longridge Business Advisors, she has provided business advisory and board services since April 2017. Ms. Robertson served as a general partner at Institutional Venture Partners (IVP), where she was an investor in the life sciences group, from July 1997 to October 1999. Prior to that, Ms. Robertson 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. Ms. Robertson was also previously an entrepreneur in residence for IVP in the life sciences group, 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.
Mr. Roeder has served on our board of directors since May 2009. Mr. Roeder joined Delphi Ventures as an Associate in 1998, and has been a Partner since 2000, focusing on medical devices, diagnostics and biotechnology. Prior to joining Delphi Ventures, Mr. Roeder was an Associate with Alex Brown’s Healthcare Investment Banking Group in San Francisco, where he focused on the medical device, life sciences and healthcare services industries. Mr. Roeder serves as a director of Senseonics Holdings, Inc. (NYSE-MKT:SENS), a continuous glucose monitoring company, and several privately held companies. He previously served as a director of Trivascular Technologies, Inc., a medical device company, which was acquired by Endologix, Inc. (NASDAQ: ELGX) in February 2016. He also previously worked with Putnam Associates, a strategy consulting firm focused on the pharmaceutical and biotechnology industries. Mr. Roeder holds an A.B. in Biochemistry from Dartmouth College.
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. Mr. Sodhi has served as the president of ResMed’s software as a service (SaaS) business since July 2017. He was previously ResMed’s 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, Raj 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. Raj holds a Master of Business Administration and a Bachelor of Science in mathematics and statistics from Dalhousie University in Halifax, Nova Scotia.
Mr. Twomey has served on our board of directors since July 2013. 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. Mr. Twomey has also served as a director of Senomyx, Inc. (NASDAQ: SNMX), a flavor technology company, since March 2006 and is chair of that company’s audit committee. Mr. Twomey also served as a director and chair of the audit committee of Cadence Pharmaceuticals, Inc., from July 2006 until it was acquired by Mallinckrodt plc in March 2014. Mr. Twomey holds a B.A. in Business Economics from the University of California, Santa Barbara.