MIME 2018 Proxy Statement

President of Sales and Marketing from July 2007 to July 2008. Mr. Jennings holds a Master of Business Administration from the Kellogg School of Management, Northwestern University, and a Bachelor of Arts degree from Boston College. Janet Bishop-Levesque, 51 , has served as our Senior Vice President, Systems, Risk and Security, since December 2017. From April 2014 to December 2017 she served as the Chief Information Security Officer of RSA, a Dell Technologies Company, a provider of security technology solutions. Prior to that, from September 2010 to March 2014, Ms. Bishop-Levesque was the Director, Information Security and Regulatory Compliance, at Aspect Software, Inc., a provider of customer contact center software solutions. She also served in a number of senior security and risk roles at Circles, a Sodexo group company, from 2003 to 2010. She serves as a director of the National Cyber Security Alliance and the Advanced Cyber Security Center. Ms. Bishop-Levesque holds a Bachelor of Science degree from the University of Vermont. Robert P. Nault, 54, has served as our Senior Vice President and General Counsel since September 2016. From May 2014 to May 2016, he served as Senior Vice President, General Counsel and Secretary of Constant Contact, Inc., a provider of email marketing software, where he also served as Vice President, General Counsel and Secretary from March 2007 to May 2014 and as interim Chief Financial Officer from March 2010 to July 2010. Prior to that, Mr. Nault served as Senior Vice President, General Counsel and Secretary of RSA Security Inc., from November 2005 until November 2006 following its acquisition by EMC Corporation in September 2006. Prior to that, Mr. Nault was Vice President and General Counsel of Med-i-Bank, Inc., a provider of software and services for electronic benefit payments, from October 2004 to July 2005; Legal Consultant and Vice President and General Counsel of ON Technology Corporation, an enterprise software company, from 2001 to 2004; and Senior Vice President and General Counsel of The Pioneer Group, Inc., a financial services and alternative investments company, from 1995 to 2000. Before joining Pioneer, Mr. Nault was a member of the corporate department of Hale and Dorr LLP (now Wilmer Cutler Pickering Hale and Dorr LLP). Mr. Nault holds a Bachelor of Arts degree from the University of Rhode Island, and a Juris Doctorate from Boston University School of Law. Christina Van Houten, 51 , has served as our Chief Strategy Officer, since April 2018. Prior to joining Mimecast, from 2014 to March 2018, Ms. Van Houten was Senior Vice President, Marketing Strategy & Product Management, at Infor Global Solutions, an enterprise software company that provides comprehensive business solutions. She served as Vice President, Industry Solution and Strategy, at Infor, from 2011 to 2014. She was Vice President of Strategy and Solutions at IBM Netezza from 2010 to 2011. Prior to that, from 2005 to 2010, she served in senior roles at Oracle Corporation. Ms. Van Houten holds a Master of Business Administration from the Booth School of Business at the University of Chicago, and a Bachelor of Arts degree from Georgetown University. John J. Walsh, Jr., 53, has served as our Senior Vice President, Engineering, since May 2017. From October 2015 to April 2017, Mr. Walsh served as the Chief Technology Officer of Tremor Video, a provider of video ad platforms. Prior to that, from January 2013 to June 2015, he was the Chief Technology Officer of CareCloud Corporation, a provider of cloud-based practice management, electronic health record, and medical billing software and services. He served as the Senior Vice President, Engineering and Operations, at Constant Contact from 2008 until 2012. Mr. Walsh holds a Master of Business Administration from Boston University, and a Bachelor of Science degree from Rensselaer Polytechnic Institute. CORPORATE GOVERNANCE Board Independence The Board has determined that each of our directors, except for Mr. Bauer as Chief Executive Officer and Mr. Murray as Chief Technology Officer, has no relationship that would interfere with the exercise of 7