ALIGN TECHNOLOGY INC

Ticker: ALGN CUSIP: 016255101 Class: COM

DF DENT & CO INC's Holding History (CIK: 0000934999)

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

Q3 2018

Shares 7,639 Value ($000) $2,989 Avg Close $368.95 Range $332.01 - $398.88

Q4 2016

Shares 20,464 Value ($000) $1,967 Avg Close $92.86 Range $83.27 - $102.10

Q2 2016

Shares 20,464 Value ($000) $1,648 Avg Close $76.47 Range $70.03 - $81.98

Q2 2015

Shares 20,464 Value ($000) $1,283 Avg Close $59.07 Range $51.65 - $64.99

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2018	7,639	$2,989	$368.95	$332.01 - $398.88
Q4 2016	20,464	$1,967	$92.86	$83.27 - $102.10
Q2 2016	20,464	$1,648	$76.47	$70.03 - $81.98
Q2 2015	20,464	$1,283	$59.07	$51.65 - $64.99