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The Invisalign system and iTero and iOC intra-oral scanning systems and OrthoCAD digital services are available to general practitioner dentists (GP dentists), orthodontists, and other dental specialists. Align provides training, clinical education programs, and the tools needed for orthodontists or GP dentists to adopt its innovative technology and offer the treatment options in their practices.

Week of January 30, 2012

Date	Open	High	Low	Close	Volume
Jan 30, 2012	25.48	25.75	25.14	25.38	1,125,928
Jan 31, 2012	24.08	24.89	23.42	23.56	2,936,039
Feb 1, 2012	23.58	24.43	23.40	24.38	1,212,521
Feb 2, 2012	24.28	24.87	24.01	24.75	1,013,639

Year End Stock Prices

The historical stock information provided is for informational purposes only and is not intended for trading purposes. The historical stock information is provided by Mergent, a third party service, and Align Technology, Inc. does not maintain or provide information directly to this service. Prices display split-adjusted cost basis per share on that date.