DEXCOM INC — Director's Dealing 2012

Mar 12, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: DEXCOM INC (DXCM)
CIK: 0001093557
Period of Report: 2012-03-08

Reporting Person: GREGG TERRANCE H (Director, CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-03-08	Common Stock	A	182813	$0.001	Acquired	989889	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	30000	Direct
Common Stock	11461	Indirect

Footnotes

F1: Represents a grant of restricted stock units that are exempt from Section 16 b-3 and are subject to vesting over a 36 month period from the date of grant as follows: 1/36th shall vest each month beginning one month following the date of grant. Share units represent a contingent right to receive one share of DexCom, Inc. common stock.

F2: Included in this number are 146,250 restricted stock units subject to vesting with respect to 1/36 of the units each month beginning one month following the grant date of March 12, 2010.
Also included in this number are 182,813 restricted stock units subject to vesting with respect to 1/36 of the units each month beginning one month following the grant date of March 8, 2011.

F3: Shares are held by the Gregg Family Trust U/A/D 12/23/1998, with respect to which the reporting person is a trustee.