Stock Trading History of Arjomand Hossein

The following table details the trading activities (stock purchases, stock sales, and stock option exercises) reported to the Securities and Exchange Commission (SEC) by insider Arjomand Hossein since year 2005. The trader's CIK number is 1343558. At the time of this reporting, Arjomand Hossein is the VP, Research & Development of Align Technology Inc (stock ticker symbol ALGN).

Stock purchases, sales, and option exercises reported by *Arjomand Hossein* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2007-05-30	ALGN	Align Technology Inc	Option Exercise	17,400	6.89	119,886
2007-05-30	ALGN	Align Technology Inc	Sale	17,400	22.95	399,330
2007-05-23	ALGN	Align Technology Inc	Sale	2,600	23.01	59,826
2007-05-23	ALGN	Align Technology Inc	Option Exercise	2,600	6.89	17,914
2007-05-01	ALGN	Align Technology Inc	Sale	3,750	23.26	87,219
2007-05-01	ALGN	Align Technology Inc	Option Exercise	7,500	6.95	52,125
2007-05-01	ALGN	Align Technology Inc	Sale	3,753	23.60	88,552
2007-04-30	ALGN	Align Technology Inc	Sale	3,193	23.02	73,518
2007-04-30	ALGN	Align Technology Inc	Option Exercise	10,500	6.95	72,975
2007-04-03	ALGN	Align Technology Inc	Sale	42	23.35	980
2007-04-30	ALGN	Align Technology Inc	Sale	7,258	23.20	168,414

Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Arjomand Hossein (VP, Research & Development of Align Technology Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.