(c & e)

On December 15, 2008, DexCom announced the promotion of Steven R. Pacelli to a newly created position as DexCom's Chief Administrative Officer.

In his capacity as Chief Administrative Officer, Mr. Pacelli will be charged with overseeing DexCom's key administrative functions, including finance, corporate development, managed care, legal, human resources, intellectual property and investor relations. Mr. Pacelli previously served as DexCom's Senior Vice President of Corporate Affairs since July 2007, and as its Vice President of Legal Affairs from April 2006 to July 2007. From March 2003 to April 2006, Mr. Pacelli served as a corporate attorney with Stradling Yocca Carlson & Rauth. Mr. Pacelli received a B.A. from the University of California, Los Angeles and a J.D. from the University of Virginia, and is a member of the State Bar of California. Mr. Pacelli is 37 years old. Mr. Pacelli has no family relationship with any director, executive officer or other person who appointed him as the Chief Administrative Officer.

DexCom does not have a written employment agreement with Mr. Pacelli. In connection with his promotion, the Compensation Committee of the Board of Directors approved an increase in Mr. Pacelli's base salary to $260,652, and an increase in Mr. Pacelli's target bonus amount to 40% of his base salary, which bonus award is predicated upon the achievement of specific revenue and operational performance milestones. Mr. Pacelli will continue to be eligible to participate in DexCom's short-term and long-term incentive programs.

(d) Exhibits

Exhibit
Number      Description of Exhibit

 99.01      Press release dated December 15, 2008 regarding promotion of Steven R.
            Pacelli as Chief Administrative Officer.