DEXCOM INC — Director's Dealing 2012

Dec 12, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: DEXCOM INC (DXCM)
CIK: 0001093557
Period of Report: 2012-12-11

Reporting Person: Pacelli Steven Robert (EVP, Strategy & Corp. Dev.)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-12-11	Common Stock	M	10000	$3.19	Acquired	176052	Direct
2012-12-11	Common Stock	S	10000	$14.2645	Disposed	166052	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-12-11	Non-Qualified Stock Option (right to buy)	$3.19	M	10000	Disposed	2018-12-11	Common Stock (10000)	Direct

Footnotes

F1: Included in this number are 118,028 unvested restricted stock units, 10,417 of which were granted on March 8, 2011 and shall vest through June 8, 2013, 35,990 of which were granted on March 8, 2011 and shall vest through March 8, 2014, and 71,621 of which were granted on March 8, 2012 and shall vest through March 8, 2015.