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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1093557	Dexcom Inc	DXCM	Surgical & Medical Instruments & Apparatus (3841)	330857544

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1343856	A Jorge Valdes	6340 Sequence Drive San Diego CA 92121	Cto	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Disposition	2017-03-10	11,834	$78.24	60,500	No	4	J	Direct
Common Stock	Disposition	2017-03-10	7,500	$78.24	53,000	No	4	J	Direct
Common Stock	Disposition	2017-03-10	12,667	$78.24	40,333	No	4	J	Direct
Common Stock	Disposition	2017-03-10	6,254	$77.55	34,079	No	4	D	Direct
Common Stock	Acquisiton	2017-03-10	11,834	$78.24	15,333	No	4	J	Indirect	by Trust
Common Stock	Acquisiton	2017-03-10	7,500	$78.24	22,833	No	4	J	Indirect	by Trust
Common Stock	Acquisiton	2017-03-10	12,667	$78.24	35,500	No	4	J	Indirect	by Trust
Common Stock	Disposition	2017-03-10	6,694	$77.55	28,806	No	4	D	Indirect	by Trust
Common Stock	Disposition	2017-03-10	3,964	$77.55	24,842	No	4	D	Indirect	by Trust
Common Stock	Disposition	2017-03-13	14,400	$77.74	10,442	No	4	S	Indirect	by Trust

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	J	Direct
No	4	J	Direct
No	4	J	Direct
No	4	D	Direct
No	4	J	Indirect	by Trust
No	4	J	Indirect	by Trust
No	4	J	Indirect	by Trust
No	4	D	Indirect	by Trust
No	4	D	Indirect	by Trust
No	4	S	Indirect	by Trust

Footnotes

Shares were transferred from direct ownership to ownership under the Valdes-Lopez-Calleja Family Trust upon vesting of previously awarded restricted stock units.
Included in this number are 40,333 unvested restricted stock units, 25,333 of which were granted on March 8, 2016 and shall vest through March 8, 2019 and 15,000 of which were granted on March 8, 2015 and shall vest through March 8, 2018.
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.
Shares are held by the Jorge Alberto Valdes and Suzanne Lopez-Calleja, cotrustees of the Valdes-Lopez-Calleja Family Trust, dated May 18, 2011.
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.
On November 4, 2016 Mr. Valdes adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Valdes. The shares set forth above were sold pursuant to the 10b5-1 Plan.
This transaction was executed in multiple trades at prices ranging from $77.41 to $78.39. 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.