DEXCOM INC — Director's Dealing 2015

Jul 17, 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: DEXCOM INC (DXCM)
CIK: 0001093557
Period of Report: 2015-07-15

Reporting Person: GREGG TERRANCE H (Director, Executive Chairman)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-07-15	Common Stock	S	15000.0	$81.6405	Disposed	417139	Indirect
2015-07-17	Common Stock	S	35750.0	$83.67	Disposed	381389	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	430626	Direct
Common Stock	11461	Indirect

Footnotes

F1: On December 12, 2014, Mr. Gregg adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Gregg. 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 $81.32 to $82.34. 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: Shares are held by the Gregg Family Trust U/A/D 12/23/1998, with respect to which the reporting person is a trustee.

F4: The reporting person contributed Dexcom, Inc. Common Stock to an exchange fund, pursuant to an agreement dated March 5, 2015 to contribute shares of DexCom, Inc. Common Stock in exchange for shares of the exchange fund. The Dexcom, Inc. Common Stock was valued at $83.67 per share for the purposes of determining the number of shares of the exchange fund issuable to the reporting person with respect to the July 17, 2015 closing of the exchange fund.