DEXCOM INC — Director's Dealing 2010

Mar 16, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: DEXCOM INC (DXCM)
CIK: 0001093557
Period of Report: 2010-03-12

Reporting Person: YANG RICHARD (V.P., Strategic Affairs)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-03-12	Incentive Stock Option (right to buy)	$9.8	A	6956	Acquired	2020-03-12	Common Stock (6956)	Direct
2010-03-12	Non-Qualified Stock Option (right to buy)	$9.8	A	34044	Acquired	2020-03-12	Common Stock (34044)	Direct

Footnotes

F1: The option vests and becomes exercisable as to 1/36th each month beginning one month following the date of grant and becomes fully vested on the third anniversary of the date of grant.

F2: Not applicable