Amendment to Bylaws Reducing Quorum Requirement

AXT, Inc. has amended its Second Amended and Restated Bylaws, effective July 26, 2026. The amendment, approved by the Board of Directors, reduces the quorum required for shareholder meetings from a majority to thirty-three and one-third percent of all shares entitled to vote. This change aims to facilitate shareholder meetings by lowering the attendance threshold. The full text of the amendment is filed as an exhibit to this Current Report on Form 8-K.