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David Ferdman
Director

Mr. Ferdman was the founder of CyrusOne and served as President & Chief Executive Officer from 2000 until its acquisition by Cincinnati Bell in June  2010. Mr. Ferdman served as the President until August 2011 and served as the Chief Strategy Officer until January 2013. Upon consummation of our initial public offering in 2013, Mr. Ferdman resigned from his employment with the Company. Prior to founding CyrusOne, Mr. Ferdman was the Chief Operating Officer and co-founder of UWI Association Programs (d/b/a Eclipse Telecommunications), a facilities-based telecommunications service provider. As Chief Operating Officer of UWI, Mr. Ferdman was instrumental in the company’s rapid growth, which culminated in its acquisition by IXC Communications (now part of Level 3 Communications Inc.) in 1998.
Mr. Ferdman is also a director of Circuit of the Americas, Quality Uptime Services, Filmwerks International, LLC and Cybraics, Inc.

Qualifications
Mr. Ferdman brings to our Board of Directors a comprehensive understanding of our business coupled with extensive experience in the data center industry.

    John W. Gamble Jr.
    Director

    Mr. Gamble is Corporate Vice President & Chief Financial Officer of   Equifax Inc., where he is responsible for corporate finance, accounting, treasury, tax, internal audit and investor relations. From September 2005 to May 2014, Mr. Gamble was Executive Vice President & Chief Financial Officer for Lexmark International, Inc. In addition to corporate finance functions, he was responsible for Lexmark’s investor relations, information technology, strategy and development, and internal audit and security functions. Prior to joining Lexmark, Mr. Gamble was executive vice president and chief financial officer of Agere Systems, Inc. Mr. Gamble also served in finance leadership roles with AlliedSignal, Inc., and then Honeywell International, Inc., following the merger of the two entities. Earlier, Mr. Gamble served in a variety of finance capacities with General Motors. Mr. Gamble began his career as an electrical engineer with Bethlehem Steel Corporation.

    Qualifications
    Mr. Gamble brings to our Board of Directors extensive knowledge regarding financial management and the information technology market.

      Michael Klayko
      Director

      Mr. Klayko has been Chief Executive Officer of MKA Capital, an investment company focusing on technology investments, since January 2013. He has also been an Operating Executive at Marlin Equity Partners, a global investment firm, since March 2018. From January 2005 until January 2013, Mr. Klayko served as Chief Executive Officer and served on the board of directors of Brocade Communications Systems, Inc., a comprehensive network solutions provider (‘‘Brocade’’). Previously, Mr. Klayko was Vice President of Worldwide Sales at Brocade and also served as its Vice President of Marketing and Support and Vice President of OEM Sales.
      Additionally, Mr. Klayko has held management positions at Rhapsody Networks, McDATA, EMC, Hewlett-Packard Company and IBM. Mr. Klayko serves on the board of directors of Allscripts Healthcare Solutions, Inc., a healthcare information technology provider, and previously served on the board of directors of Brocade (2005 through 2013), PMC-Sierra, Inc. (2012 through January 2016) and Bally Technologies (2014).

      Qualifications
      Mr. Klayko brings to our Board of Directors a comprehensive understanding of the technology and network solutions industry coupled with extensive experience as a director of other publicly-held technology companies.

        Tod Nielsen
        Director

        Mr. Nielsen has served as the President & Chief Executive Officer and a member of the board of directors of FinancialForce, a private cloud ERP vendor, since January 2017. Mr. Nielsen served as Chief Executive Officer from June 2013 to June 2016 of Heroku, a cloud application development company that was acquired by Salesforce in 2011, and as Executive Vice President of Platform at Salesforce from June 2013 to June 2016. Prior to that, Mr. Nielsen was Co-President, Applications Platform Group at  VMware, Inc. Mr. Nielsen served as VMware’s Chief Operating Officer from January 2009 to January 2013. Prior to that, he served as President and Chief Executive Officer of Borland Software Corporation from November 2005 to December 2008. From June 2005 to November 2005, Mr. Nielsen served  as Senior Vice President, Marketing and Global Sales Support for Oracle Corporation, an enterprise software company. From August 2001 to August 2004, Mr. Nielsen served in various positions at BEA Systems, Inc., a   provider of application infrastructure software, including Chief Marketing  Officer and Executive Vice President, Engineering. Mr. Nielsen also spent 12 years with Microsoft Corporation (‘‘Microsoft’’) in various roles, including General Manager of Database and Developer Tools, Vice President of Developer Tools, and at the time of his departure, Vice President of   Microsoft’s platform group. Mr. Nielsen is a current director of BTI Systems, and former director of MyEdu Corp., Fortify Software and Club Holdings, LLC.

        Qualifications
        Mr. Nielsen brings to our Board of Directors a strong technical background in software development, coupled with extensive management experience and knowledge of the information technology market.

          Alex Shumate
          Director

          Mr. Shumate has served as the Managing Partner, North America, of Squire Patton Boggs (US) LLP, an international law firm, since 2009. He joined   Squire Patton Boggs in 1988 and he has served as the Managing Partner of   its Columbus, Ohio office since 1991. He is a member of the Board of   Trustees of The Ohio State University, where he is chairman of the board’s Governance Committee; he currently is serving his third term as a trustee and has twice served as Chairman of the Board. Mr. Shumate is the lead independent director of The J.M. Smucker Company and chairman of the board’s Nominating, Governance and Corporate Responsibility Committee. He previously served as a director of the Wm. Wrigley Jr. Company from 1998  until its acquisition in 2008, of Nationwide Financial Services from 2002 until   its acquisition in 2009, and of Cincinnati Bell Inc. (‘‘Cincinnati Bell’’) from 2005 to January 2013. Prior to joining Squire Patton Boggs, Mr. Shumate served as chief counsel and deputy chief of staff to the Governor of the State of Ohio   and as assistant attorney general, State of Ohio.

          Qualifications
          Mr. Shumate brings to our Board of Directors demonstrated managerial ability and a thorough understanding of the principles of good corporate governance.

            William E. Sullivan
            Director

            Mr. Sullivan served as the Chief Financial Officer & Treasurer for Purdue University in Indiana from June 2014 until his retirement at the end of 2019. Mr. Sullivan served as the Chief Financial Officer of ProLogis Inc., a real estate investment trust (‘‘REIT’’) operating as an owner, manager and developer of distribution facilities, from March 2007 to May 2012. Prior to joining ProLogis, Mr. Sullivan was the founder and President of Greenwood Advisors, Inc., a private financial consulting and advisory firm, from 2005 to 2007. Prior to that, Mr. Sullivan served as the Chairman (2001 to 2007) & Chief Executive Officer (2001 to 2005) of SiteStuff, Inc., a procurement solutions company specializing in real estate property and facility   management. Mr. Sullivan worked for Jones Lang LaSalle Incorporated, and its predecessor, LaSalle Partners, in a variety of positions from 1984 to 2001, including as Chief Financial Officer from 1997 to 2001 and as a member of the Board of Directors from 1997 to 1999. Prior to joining Jones Lang LaSalle, Mr. Sullivan was a member of the Communications Lending Group of the First National Bank of Chicago and also served as a member of the tax division of Ernst & Ernst LLP, a predecessor to Ernst & Young LLP. Mr. Sullivan has also served as a director and audit committee chairman of Jones Lang LaSalle Income Property Trust, Inc. since September 2012 and served as a director of Club Corp. from August 2013 until September 2017.

            Qualifications
            Mr. Sullivan brings to our Board of Directors a comprehensive understanding of the commercial real estate industry coupled with extensive REIT management experience.

              Lynn A. Wentworth
              Director

              Ms. Wentworth served as Senior Vice President, Chief Financial Officer & Treasurer of BlueLinx Holdings Inc. (a building products distributor) from 2007 until her retirement in 2008. Prior to joining BlueLinx, Ms. Wentworth served as Vice President and Chief Financial Officer for BellSouth Corporation’s Communications Group and held various other positions at BellSouth from 1985 to 2007. Ms. Wentworth began her career at Coopers & Lybrand, where she served in both the audit and tax divisions. Ms. Wentworth is a certified public accountant licensed in the state of Georgia. Ms. Wentworth chairs the Board of Directors and is a member of the audit committee of Cincinnati Bell. Ms. Wentworth also serves as a director and chair of the audit committee of Graphic Packaging Holding Company.

              Qualifications
              Ms. Wentworth brings to our Board of Directors extensive knowledge regarding complex financial, accounting and corporate governance matters affecting large corporations.