Transfer Agent:

American Stock Transfer & Trust Company, LLC (AST)
Shareholder Services: https://www.astfinancial.com/contact-us/
Primary Contacts: 
     help@astfinancial.com
     (800) 937-5449 or (718) 921-8124

Teletypewriter for the hearing impaired:
(866) 703-9077
(718) 921-8386

Stock Purchases:
Dexcom does not have a direct stock purchase plan (DSPP). Please contact your stockbroker to purchase Dexcom shares. Our shares trade on the Nasdaq stock exchange under the ticker “DXCM”.