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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
1700255	Steven Jacob Leach	6340 Sequence Drive San Diego CA 92121	Svp, Research & Development	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
Common Stock	Disposition	2017-03-09	7,329	$77.56	98,604	No	4	S	Direct
Common Stock	Disposition	2017-03-09	3,012	$77.24	95,592	No	4	S	Direct
Common Stock	Disposition	2017-03-10	1,950	$77.55	93,642	No	4	D	Direct
Common Stock	Disposition	2017-03-10	5,473	$77.55	88,169	No	4	D	Direct
Common Stock	Disposition	2017-03-10	2,538	$77.55	85,631	No	4	D	Direct
Common Stock	Acquisiton	2017-03-10	7,500	$7.63	93,131	No	4	M	Direct
Common Stock	Disposition	2017-03-13	5,194	$78.07	87,937	No	4	S	Direct
Common Stock	Disposition	2017-03-13	2,732	$77.78	85,205	No	4	S	Direct
Common Stock	Disposition	2017-03-14	3,050	$77.32	82,155	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	S	Direct
No	4	S	Direct
No	4	D	Direct
No	4	D	Direct
No	4	D	Direct
No	4	M	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Incentive Stock Option (right to buy)	Disposition	2017-03-10	7,500	$7.63	7,500	$7.63

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0	2009-05-19	2018-05-19	No	4	M	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	12,000	Indirect	Family Holdings
Common Stock	50,100	Indirect	by Spouse

Footnotes

Included in this number are 57,800 unvested restricted stock units, 23,134 of which were granted on March 8, 2017 and shall vest through March 8, 2020, 21,333 of which were granted on March 8, 2016 shall vest through March 8, 2019 and 13,333 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 Gregg Family Grandchildren's Trust UAD 12/30/2010, with respect to which the reporting person's spouse is a trustee.
Shares are held by the Kyndra S. Leach Trust UAD 12/12/2012, with respect to which the reporting person's spouse is a trustee.