DexCom To Present at the Fourth Annual JMP Securities Healthcare Focus Conference

DexCom, Inc. (NASDAQ:DXCM) today announced that Steven R. Pacelli, Chief Administrative Officer, will present an update on DexCom at the Fourth Annual JMP Securities Healthcare Focus Conference in New York City on Monday, October 5th, 2009, at 12:00 p.m. (EDT). The presentation, which will occur live at The New York Palace Hotel, will be concurrently webcast. The link to the webcast will be available on the DexCom, Inc. website at www.dexcom.com under the investor webcast section and will be archived for future reference.

About DexCom, Inc.

DexCom, Inc., headquartered in San Diego, California, is developing and marketing continuous glucose monitoring systems for ambulatory use by patients and by healthcare providers in the hospital.

Cautionary Statement Regarding Forward Looking Statements

DexCom is a medical device company with a limited operating history. Successful commercialization of the company’s products is subject to numerous risks and uncertainties, including a lack of acceptance in the marketplace by physicians and patients, the inability to manufacture products in commercial quantities at an acceptable cost, possible delays in the company’s development programs, the inability of patients to receive reimbursement from third-party payors and inadequate financial and other resources. Certain of these risks and uncertainties, in addition to other risks, are more fully described in the company’s annual report on Form 10-Q for the period ending June 30, 2009, as filed with the Securities and Exchange Commission on August 3, 2009.