ALIGN TECHNOLOGY INC

Ticker: ALGN CUSIP: 016255101 Class: COM

LONE PINE CAPITAL LLC's Holding History (CIK: 0001061165)

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

Q1 2017

Shares 2,476,534 Value ($000) $284,083 Avg Close $101.02 Range $88.56 - $115.20

Q4 2016

Shares 2,476,534 Value ($000) $238,069 Avg Close $92.86 Range $83.27 - $102.10

Q3 2016

Shares 2,436,920 Value ($000) $228,461 Avg Close $90.43 Range $80.30 - $96.90

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2017	2,476,534	$284,083	$101.02	$88.56 - $115.20
Q4 2016	2,476,534	$238,069	$92.86	$83.27 - $102.10
Q3 2016	2,436,920	$228,461	$90.43	$80.30 - $96.90