DEXCOM INC — Director's Dealing 2014

Sep 15, 2014

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: DEXCOM INC (DXCM)
CIK: 0001093557
Period of Report: 2014-09-10

Reporting Person: VALDES JORGE A (CTO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2014-09-10	Common Stock	J	11937.0	$43.2321	Disposed	130684	Direct
2014-09-12	Common Stock	J	11936.0	$43.3624	Disposed	118748	Direct
2014-09-10	Common Stock	D	6225.0	$43.2321	Disposed	57970	Indirect
2014-09-10	Common Stock	J	11937.0	$43.2321	Acquired	69907	Indirect
2014-09-12	Common Stock	D	6308.0	$43.3624	Disposed	63599	Indirect
2014-09-12	Common Stock	J	11936.0	$43.3624	Acquired	75535	Indirect

Footnotes

F1: Shares were transferred from direct ownership to ownership under the Valdes-Lopez-Calleja Family Trust upon vesting of previously awarded restricted stock units.

F2: Included in this number are 118,748 unvested restricted stock units, 71,000 of which were granted on March 8, 2014 and shall vest through March 8, 2017, 35,811 of which were granted on March 11, 2013 and shall vest through March 11, 2016, and 11,937 of which were granted on March 8, 2012 and shall vest through March 8, 2015.

F3: These shares were sold to cover the Company's tax withholding obligation that accrued in connection with the vesting of restricted stock units previously granted.

F4: Shares are held by the Valdes-Lopez-Calleja Family Trust U/A/D 05/18/2011, with respect to which the reporting person is a trustee.