DEXCOM INC - Director's Dealing 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: DEXCOM INC (DXCM)
CIK: 0001093557
Period of Report: 2010-05-14

Reporting Person: LORD JONATHAN T MD (Director)

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-05-14	Common Stock	P	300	$10.69	Acquired	5411	Direct
2010-05-14	Common Stock	P	1300	$10.695	Acquired	6711	Direct
2010-05-14	Common Stock	P	100	$10.723	Acquired	6811	Direct
2010-05-14	Common Stock	P	4000	$10.73	Acquired	10811	Direct
2010-05-14	Common Stock	P	300	$10.735	Acquired	11111	Direct
2010-05-14	Common Stock	P	300	$10.738	Acquired	11411	Direct
2010-05-14	Common Stock	P	400	$10.74	Acquired	11811	Direct
2010-05-14	Common Stock	P	100	$10.745	Acquired	11911	Direct
2010-05-14	Common Stock	P	200	$10.748	Acquired	12111	Direct
2010-05-14	Common Stock	P	12920	$10.75	Acquired	25031	Direct
2010-05-14	Common Stock	P	100	$10.76	Acquired	25131	Direct
2010-05-14	Common Stock	P	100	$10.77	Acquired	25231	Direct
2010-05-14	Common Stock	P	700	$10.78	Acquired	25931	Direct
2010-05-14	Common Stock	P	100	$10.79	Acquired	26031	Direct
2010-05-14	Common Stock	P	9002	$10.8	Acquired	35033	Direct
2010-05-14	Common Stock	P	300	$10.84	Acquired	35333	Direct
2010-05-14	Common Stock	P	9897	$10.85	Acquired	45230	Direct