DEXCOM INC — Director's Dealing 2013

Nov 18, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: DEXCOM INC (DXCM)
CIK: 0001093557
Period of Report: 2013-11-14

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-11-14	Common Stock	M	5000.0	$3.19	Acquired	200865	Direct
2013-11-14	Common Stock	S	5000.0	$33.3185	Disposed	195865	Direct
2013-11-15	Common Stock	M	7000.0	$3.19	Acquired	202865	Direct
2013-11-15	Common Stock	S	7000.0	$32.6	Disposed	195865	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-11-14	Non-Qualified Stock Option (right to buy)	$3.19	M	5000.0	Disposed	2018-12-11	Common Stock (5000)	Direct
2013-11-15	Non-Qualified Stock Option (right to buy)	$3.19	M	7000.0	Disposed	2018-12-11	Common Stock (7000)	Direct

Footnotes

F1: Included in this number are 119,429 unvested restricted stock units, 71,621 of which were granted on March 11, 2013 and shall vest through March 11, 2016, 35,811 of which were granted on March 8, 2012 and shall vest through March 8, 2015, and 11,997 of which were granted on March 8, 2011 and shall vest through March 8, 2014.

F2: This transaction was executed in multiple trades at prices ranging from $32.5901 to $32.654. 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.