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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
1236386	S Jay Skyler	6340 Sequence Drive San Diego CA 92121		Yes	No	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	Acquisiton	2017-03-06	31,890	$7.31	49,136	No	4	M	Indirect	by Partnership
Common Stock	Disposition	2017-03-06	31,890	$78.13	17,246	No	4	S	Indirect	by Partnership

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	M	Indirect	by Partnership
No	4	S	Indirect	by Partnership

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Non-Qualified Stock Option (right to buy)	Disposition	2017-03-06	31,890	$78.13	31,890	$7.31

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0	2008-05-23	2017-05-23	No	4	M	Indirect

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	5,011	Direct
Common Stock	10,000	Indirect	by Spouse

Footnotes

Shares are held by Skyler Bach Family Limited Partnership, LLP, with respect to which the reporting person is a managing partner of the partnership and maintains voting rights of these shares.
This transaction was executed in multiple trades at prices ranging from $78.00 to $78.28. 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.
The reporting person disclaims beneficial ownership of these securities and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.