DEXCOM INC

Ticker: DXCM CUSIP: 252131107 Class: EQTY

GAGNON SECURITIES LLC's Holding History (CIK: 0001125725)

Note: Option positions (PUT/CALL) are excluded.

Q1 2017

Shares 2,673 Value ($000) $226 Avg Close $19.52 Range $14.42 - $22.20

Q2 2015

Shares 3,036 Value ($000) $243 Avg Close $17.56 Range $15.20 - $20.14

Q1 2015

Shares 3,911 Value ($000) $244 Avg Close $15.11 Range $13.32 - $16.16

Q4 2014

Shares 3,906 Value ($000) $215 Avg Close $12.24 Range $9.69 - $14.58

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2017	2,673	$226	$19.52	$14.42 - $22.20
Q2 2015	3,036	$243	$17.56	$15.20 - $20.14
Q1 2015	3,911	$244	$15.11	$13.32 - $16.16
Q4 2014	3,906	$215	$12.24	$9.69 - $14.58