DEXCOM INC

Ticker: DXCM CUSIP: 252131107 Class: EQTY

CONTRAVISORY INVESTMENT MANAGEMENT, INC.'s Holding History (CIK: 0001365707)

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

Q2 2018

Shares 200 Value ($000) $19 Avg Close $21.20 Range $17.38 - $25.52

Q1 2018

Shares 200 Value ($000) $15 Avg Close $14.79 Range $12.76 - $18.82

Q4 2017

Shares 200 Value ($000) $11 Avg Close $13.00 Range $10.94 - $15.59

Q3 2017

Shares 200 Value ($000) $10 Avg Close $17.68 Range $10.65 - $19.73

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2018	200	$19	$21.20	$17.38 - $25.52
Q1 2018	200	$15	$14.79	$12.76 - $18.82
Q4 2017	200	$11	$13.00	$10.94 - $15.59
Q3 2017	200	$10	$17.68	$10.65 - $19.73