MIME 2017 Annual Report

15 Employees As of March 31, 2018, we had 1,192 employees and subcontractors, including 483 in sales and marketing, 256 in research and development, 260 in services and support and 193 in general and administrative. While we have operations in the United Kingdom, the United States, South Africa, Australia and Germany, most of our employees are based in the United Kingdom and the United States. None of our employees are represented by a labor union or covered by a collective bargaining agreement. We have never experienced a strike or similar work stoppage, and we consider our relations with our employees to be good. Corporate Information Mimecast Limited was incorporated under the laws of the Bailiwick of Jersey with company number 119119 on July 28, 2015 as a public company limited by shares. On November 4, 2015, Mimecast Limited became the holding company of Mimecast UK Limited, a private limited company incorporated in 2003 under the laws of England and Wales, and its subsidiaries by way of a share-for-share exchange in which the shareholders of Mimecast UK Limited exchanged their shares in Mimecast UK Limited for an identical number of shares of the same class in Mimecast Limited. Following the exchange, the historical consolidated financial statements of Mimecast UK Limited became the historical consolidated financial statements of Mimecast Limited, of which the consolidated financial statements as of and for the three years ended March 31, 2018 are included in this Annual Report on Form 10-K. Mimecast Limited has nine subsidiaries. Our principal operating companies are Mimecast UK Limited, a company organized under the laws of England and Wales, Mimecast Services Ltd, a company organized under the laws of England and Wales, Mimecast North America Inc., a Delaware, United States corporation, Mimecast South Africa (Pty) Ltd., a South African corporation, Mimecast Australia Pty. Ltd., an Australian corporation, and Mimecast Germany GmbH, a German corporation, each of which is a wholly-owned subsidiary of Mimecast Limited. Our principal executive office is located at CityPoint, One Ropemaker Street, Moorgate, London, EC2Y 9AW, United Kingdom. Our ordinary shares are traded on The Nasdaq Global Select Market under the symbol “MIME”. Geographic Information For financial reporting purposes, total revenue and property and equipment, net attributable to geographic areas are presented in Note 14, “Segment and Geographic Information”, to the consolidated financial statements, included elsewhere in this Annual Report on Form 10-K. Available Information We maintain an Internet website at www.mimecast.com . The information on, or that can be accessed through, our website is not incorporated by reference into this Annual Report on Form 10-K and should not be considered to be a part of this Annual Report on Form 10-K. Our website address is included in this Annual Report on Form 10-K as inactive textual reference only. Our reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, or the Exchange Act, including our Annual Reports on Form 10-K, our Quarterly Reports on Form 10-Q and our Current Reports on Form 8-K, and amendments to those reports, are accessible through our website, free of charge, as soon as reasonably practicable after these reports are filed electronically with, or otherwise furnished to, the Securities and Exchange Commission, or the SEC. We also make available on our website the charters of our audit committee, compensation committee and nominating and corporate governance committee, as well as our corporate governance guidelines and our code of business conduct and ethics. You may request copies of our reports and the other documents referenced above, at no cost, by writing to or telephoning us as follows: Mimecast Limited Attention: Robert Sanders 191 Spring Street Lexington, Massachusetts 02421 Telephone: 617-393-7050

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