DEXCOM INC — Director's Dealing 2014

Feb 27, 2014

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: DEXCOM INC (DXCM)
CIK: 0001093557
Period of Report: 2014-02-25

Reporting Person: LORD JONATHAN T MD (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2014-02-25	Common Stock	M	64807.0	$4.58	Acquired	193117	Direct
2014-02-25	Common Stock	S	64807.0	$45.1508	Disposed	128310	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2014-02-25	Non-Qualified Stock Option (right to buy)	$4.58	M	64807.0	Disposed	2019-05-19	Common Stock (64807)	Direct

Footnotes

F1: This transaction was executed in multiple trades at prices ranging from $45.15 to $45.22. The price above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issurer full information regarding the number of shares and prices at which the transactions were effected.

F2: Included in this number are 15,079 unvested restricted stock units granted on May 31, 2013, which shall vest on May 31, 2014.