Stock Trading History of Collins David E

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 Collins David E since year 2005. The trader's CIK number is 1234780. At the time of this reporting, Collins David E is the Director of Align Technology Inc (stock ticker symbol ALGN).

Stock purchases, sales, and option exercises reported by insider *Collins David E* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2008-02-15	ALGN	Align Technology Inc	Purchase	10,000	12.95	129,500
2007-07-27	ALGN	Align Technology Inc	Sale	33,000	27.18	896,808
2007-07-27	ALGN	Align Technology Inc	Option Exercise	33,000	12.70	419,100
2007-05-30	ALGN	Align Technology Inc	Option Exercise	8,000	7.35	58,800
2007-05-01	ALGN	Align Technology Inc	Sale	5,000	23.72	118,600
2007-05-02	ALGN	Align Technology Inc	Sale	8,000	23.40	187,160
2007-05-02	ALGN	Align Technology Inc	Option Exercise	8,000	7.19	57,520

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 Collins David E (Director of Align Technology Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.