DEXCOM INC — Director's Dealing 2017

Dec 28, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: DEXCOM INC (DXCM)
CIK: 0001093557
Period of Report: 2017-12-26

Reporting Person: DOUBLEDAY RICHARD (EVP, Chief Commercial Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-12-26	Common Stock	S	1635	$56.3937	Disposed	17245	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	65049	Direct

Footnotes

F1: This transaction was executed in multiple trades at prices ranging from $56.16 to $56.49. 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 issuer full information regarding the number of shares and prices at which the transactions were effected.

F2: Shares are held by the Doubleday Living Trust U/A/D 5/26/2015, with respect to which the reporting person is a trustee.