DEXCOM INC — Director's Dealing 2017

Jan 25, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: DEXCOM INC (DXCM)
CIK: 0001093557
Period of Report: 2017-01-23

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-01-23	Common Stock	M	9637	$7.79	Acquired	120046	Direct
2017-01-23	Common Stock	S	9637	$79.9946	Disposed	110409	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-01-23	Incentive Stock Option (right to buy)	$7.79	M	9637	Disposed	2017-08-02	Common Stock (9637)	Direct

Footnotes

F1: On December 06, 2016 Mr. Pacelli adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Pacelli. The shares set forth above were sold pursuant to the 10b5-1 Plan.

F2: This transaction was executed in multiple trades at prices ranging from $79.39 to $80.37. 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.

F3: Included in this number are 72,334 unvested restricted stock units, 38,000 of which were granted on March 8, 2016 and shall vest through March 8, 2019, 22,500 of which were granted on March 8, 2015 and shall vest through March 8, 2018 and 11,834 of which were granted on March 8, 2014 and shall vest through March 8, 2017.