X0306 4 2015-07-16 0 0001051627 AXT INC AXTI 0001078582 YOUNG MORRIS S 4281 TECHNOLOGY DRIVE FREMONT CA 94538 1 1 0 0 Chief Executive Officer Common Stock 2015-07-16 5 G 0 1000 0 D 581951 I By Trust Shares held directly by the Young Family Trust for which the Reporting Person serves as trustee. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose. /s/ Morris S Young, by power of attorney 2015-07-24