THE CORPORATE LIBRARY

Related Party Transactions and Outside Related Director Information

AXT, Inc. (AXTI)

4/25/2006 Proxy Information

Since January 2002, there has not been, nor is there currently proposed, any transaction or series of similar transactions to which we were or are to be a party in which the amount involved exceeds $60,000, and in which any director, executive officer or holder of more than 5% of any class of our voting securities or members of that personŐs immediate family had or will have a direct or indirect material interest other than the transactions described below.

We entered into an operating lease in July 2001 for warehouse space in Fremont, CA with 4160 Business Center, LLC, a real estate holding company, in which Davis Zhang, the president of our China operations, is the sole shareholder. Lease payments to 4160 Business Center, LLC were approximately $121,000 for the three months ended March 31, 2003. In April of 2003, Mr. Zhang sold this warehouse to a party unrelated to the Company. We began leasing this warehouse from the new owner on the date of sale, and this lease expires in July, 2006. Mr. Zhang continues to hold a $3.7 million note on the property as of March 31, 2006.

4/29/2005 Proxy Information

We entered into an operating lease in July 2001 for warehouse space in Fremont, CA with 4160 Business Center, LLC, a real estate holding company, in which Davis Zhang, the president of our China operations, is the sole shareholder. Lease payments to 4160 Business Center, LLC were approximately $121,000 for the three months ended March 31, 2003. In April of 2003, Mr. Zhang sold this warehouse to a party unrelated to the Company. We began leasing this warehouse from the new owner on the date of sale. Mr. Zhang will continue to hold a $3.7 million note on the property through April 2005.

3/17/2005 8K Information

Mr. Donald L. Tatzin served as Chief Financial Officer of AXT, Inc. from August 2000 until May 2004 and as interim Chief Executive Officer from May 2004 until mid-March 2005. He also served as interim Chief Financial Officer from April 2000 to August 2000.

4/19/2004 Proxy Information

Since January 2003, there has not been, nor is there currently proposed, any transaction or series of similar transactions to which we were or are to be a party in which the amount involved exceeds $60,000, and in which any director, executive officer or holder of more than 5% of any class of our voting securities or members of that personŐs immediate family had or will have a direct or indirect material interest other than the transactions described below.

The Company entered into an operating lease for warehouse space in Fremont, CA with 4160 Business Center, LLC, a real estate holding company, of which Davis Zhang, the president of our substrate division, is the sole shareholder. Lease payments to 4160 Business Center, LLC were approximately $121,000 for the three months ended March 31, 2003. In April of 2003, Mr. Zhang sold this warehouse to a party unrelated to the Company. Mr. Zhang will continue to hold a $3.7 million note on the property through April 2005.

4/30/2003 Proxy Information

The Company entered into an operating lease for warehouse space in Fremont, CA with 4160 Business Center, LLC, a real estate holding company, of which Davis Zhang, the president of our substrate division, is the sole shareholder. Lease payments to 4160 Business Center, LLC were approximately $484,000 for the year ended December 31, 2002.