DexCom, Inc. (NASDAQ:DXCM) today announced that Terrance Gregg, President and Chief Executive Officer, will present an update on DexCom at the William Blair Growth Stock Conference in Chicago on Thursday, June 19, 2008, at 11:10 a.m. (CST). The presentation, which will occur live at the Four Seasons Hotel in Chicago, 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 people with diabetes.

DexCom, Inc.
Steven R. Pacelli
Senior Vice President of Corporate Affairs
858-200-0200