DEXCOM INC

Ticker: DXCM CUSIP: 252131107 Class: EQTY

Casdin Capital, LLC's Holding History (CIK: 0001534261)

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

Q4 2025

Shares 175,000 Value ($000) $11,615 Avg Close $64.65 Range $54.11 - $72.08

Q2 2016

Shares 15,000 Value ($000) $1,190 Avg Close $17.03 Range $15.02 - $20.31

Q1 2016

Shares 40,000 Value ($000) $2,716 Avg Close $16.70 Range $11.98 - $20.97

Q4 2015

Shares 17,000 Value ($000) $1,392 Avg Close $20.81 Range $17.57 - $22.36

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	175,000	$11,615	$64.65	$54.11 - $72.08
Q2 2016	15,000	$1,190	$17.03	$15.02 - $20.31
Q1 2016	40,000	$2,716	$16.70	$11.98 - $20.97
Q4 2015	17,000	$1,392	$20.81	$17.57 - $22.36