On August 24, 2022, Mr. Sukesh Mohan informed the Board of Directors of Amtech Systems, Inc. (the Company) that he would not stand for election as a director at the Company's 2023 annual meeting of shareholders. His decision not to stand for election was not due to any disagreement with respect to the operations, policies or practices of the Company. The Company thanks Mr. Mohan for his many significant contributions to the Company.

The nominating and corporate governance committee of the Board of Directors will immediately begin searching for new director candidates to succeed Mr. Mohan and to fill the pending vacant director seat left by Mr. Jong S. Whangs previously announced retirement from the Company's Board of Directors on December 31, 2022. Following Mr. Whangs departure, the Company's Board of Directors will remain majority independent, with all of its committees comprised of at least three independent directors under the relevant definitions.