DEXCOM INC — Director's Dealing 2014

Feb 28, 2014

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: DEXCOM INC (DXCM)
CIK: 0001093557
Period of Report: 2014-02-26

Reporting Person: MOY JEFFREY (SVP, Operations)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2014-02-26	Common Stock	M	2500.0	$6.33	Acquired	189985	Direct
2014-02-26	Common Stock	S	2500.0	$45.9681	Disposed	187485	Direct
2014-02-26	Common Stock	M	8750.0	$3.19	Acquired	196235	Direct
2014-02-26	Common Stock	S	8750.0	$45.48	Disposed	187485	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2014-02-26	Non-Qualified Stock Option (right to buy)	$3.19	M	8750.0	Disposed	2018-12-11	Common Stock (8750)	Direct
2014-02-26	Non-Qualified Stock Option (right to buy)	$6.33	M	2500.0	Disposed	2018-09-24	Common Stock (2500)	Direct

Footnotes

F1: Included in this number are 84,438 unvested restricted stock units, 50,000 of which were granted on March 11, 2013 and shall vest through March 11, 2016, 21,875 of which were granted on March 8, 2012 and shall vest through March 8, 2015, and 12,563 of which were granted on March 8, 2011 and shall vest through March 8, 2014.