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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	Explanation
Common Stock	Disposition	2018-09-10	1,936	$143.76	96,962	No	4	S	Direct
Common Stock	Disposition	2018-09-10	2,678	$143.76	94,284	No	4	S	Direct

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

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	11,824	Indirect	Family Holdings
Common Stock	47,600	Indirect	by Spouse

Footnotes

Represents the number of shares required to be sold by the reporting person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the reporting person.
Included in this number are 46,994 unvested restricted stock units, 30,093 of which were granted on March 8, 2018 and shall vest through March 8, 2021, 11,567 of which were granted on March 8, 2017 and shall vest through March 8, 2020 and 5,334 of which were granted on March 8, 2016 shall vest through March 8, 2019.
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.