Align Technology Obtains $15 Million Line of Credit Santa Clara, Calif. – January 6, 2003 -- Align Technology, Inc. (Nasdaq: ALGN), the inventor of Invisalign®, a proprietary method of straightening teeth without wires and brackets, announced today that it has received a $10 million accounts receivable-based revolving line of credit and a $5 million equipment-based term loan from the Technology and Life Sciences Division of Comerica Bank-California (NYSE: CMA). The credit line is an 18 month facility and will be used to provide additional working capital, if needed, to fund further growth. The equipment loan is payable in thirty-six equal monthly installments.

“Securing this line of credit and loan, coupled with the $18 million equity infusion that closed in November of last year will help support our current operating needs and, along with future revenues, should meet our cash operating requirements well into 2004,” said Eldon Bullington, Align’s chief financial officer. “This marks an important step in the financial growth and stability of Align Technology as we drive the business toward profitability. We look forward to working with Comerica, a respected and established provider of banking services.”

Under the terms of the agreement, the borrowings are prime rate based for the revolving line of credit and the equipment loan with customary financial and other covenants.

About Align Technology, Inc.

Align Technology designs, manufactures and markets Invisalign, a proprietary new method for treating malocclusion, or the misalignment of teeth. Invisalign corrects malocclusion using a series of clear, nearly invisible, removable appliances that gently move teeth to a desired final position. Because it does not rely on the use of metal or ceramic brackets and wires, Invisalign significantly reduces the aesthetic and other limitations associated with braces. Invisalign is appropriate for treating adults and older teens. Align Technology was founded in March 1997 and received FDA clearance to market Invisalign in 1998.

To learn more about Invisalign or to find a certified Invisalign doctor, please visit www.invisalign.com or call 1-800-INVISIBLE.

About Comerica’s Technology and Life Sciences Division

Comerica’s Technology and Life Sciences Division is one of the nation’s leading technology banking practices, offering a wide range of financial services tailored to corporate customers, entrepreneurs and professionals. Veteran bankers provide credit and financial services and products to young, growing, professionally backed technology and life sciences companies, as well as their more mature counterparts. From 19 offices located across the U.S., Comerica’s Technology and Life Sciences Division serves all major technology centers. Comerica is among the 20 largest banking companies in the nation, with $52.6 billion in assets. For more information, visit www.comerica.com.

This news release may contain forward-looking statements based on Align Technology’s current expectations. These forward-looking statements involve risks and uncertainties. A number of important factors could cause actual results to differ materially from those in the forward-looking statements. These factors include Align Technology’s ability to achieve profitability, the ability to control costs and continue to achieve efficiencies, the adoption by orthodontists, dentists, and consumers of Invisalign, Align Technology’s successful enforcement of its intellectual property and avoidance of infringement on third party patents, Align Technology’s ability to establish and maintain reliable, high-volume manufacturing capacity in the U.S. and internationally and Align Technology’s ability to manage its significant growth and retain its key personnel. These factors, as well as other factors that could cause actual results to differ materially, are discussed in more detail in Align Technology’s Annual Report on Form 10-K, Quarterly Report on Form 10-Q, as well as in other reports and documents filed from time to time with the Securities and Exchange Commission.