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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
1323190	K Andrew Balo	6340 Sequence Drive San Diego CA 92121	Svp, Regulatory And Clinical	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	2012-12-13	5,760	$13.98	103,973	No	4	S	Direct
Common Stock	Disposition	2012-12-13	7,000	$13.96	0	No	4	S	Indirect	by Trust

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

Footnotes

This transaction was executed in multiple trades at prices ranging from $13.92 to $14.08. 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 issurer full information regarding the number of shares and prices at which the transactions were effected.
Included in this number are 75,734 unvested restricted stock units, 21,984 of which were granted on March 8, 2011 and shall vest through March 8, 2014, and 53,750 of which were granted on March 8, 2012 and shall vest through March 8, 2015.
This transaction was executed in multiple trades at prices ranging from $13.92 to $14.04. 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 issurer full information regarding the number of shares and prices at which the transactions were effected.
Shares are held by the Balo Family Trust U/A/D 4/6/2006, with respect to which the reporting person is a trustee.