DEXCOM INC — Director's Dealing 2014

Apr 16, 2014

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: DEXCOM INC (DXCM)
CIK: 0001093557
Period of Report: 2014-04-14

Reporting Person: LISTER JOHN (Sr. VP, General Counsel)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2014-04-14	Common Stock	M	1750.0	$4.58	Acquired	122292	Direct
2014-04-14	Common Stock	S	1750.0	$35.86	Disposed	120542	Direct
2014-04-14	Common Stock	S	1134.0	$35.86	Disposed	119408	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2014-04-14	Non-Qualified Stock Option (right to buy)	$4.58	M	1750.0	Disposed	2019-05-19	Common Stock (1750)	Direct

Footnotes

F1: On December 11, 2013, Mr. Lister adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Lister. The shares set forth above were sold pursuant to the 10b5-1 Plan.

F2: Included in this number are 99,375 unvested restricted stock units, 65,000 of which were granted on March 8, 2014 and shall vest through March 8, 2017, 23,333 of which were granted on March 11, 2013 and shall vest through March 11, 2016, and 11,042 of which were granted on March 8, 2012 and shall vest through March 8, 2015.