Amtech Systems to Announce Fourth Quarter and Fiscal Year 2023 Financial Results on Wednesday, December 6, 2023

Amtech Systems, Inc. ("Amtech") (NASDAQ: ASYS), a manufacturer of capital equipment, including thermal processing and wafer polishing, and related consumables used in fabricating semiconductor devices, such as silicon carbide (SiC) and silicon power, analog and discrete devices, and electronic assemblies and modules focusing on enabling technologies for electric vehicles (EV) and clean technology (CleanTech) applications, will announce its fourth quarter and fiscal year 2023 financial results for the period ended September 30, 2023 on Wednesday, December 6, 2023, after market close.

The company will host a conference call to discuss these results at 5:00 pm ET on Wednesday, December 6, 2023. Robert Daigle, Chief Executive Officer, Lisa Gibbs, Chief Financial Officer, and Paul Lancaster, Vice President, Sales and Customer Service, will provide an overview of the quarter, discuss current business conditions, and conduct a question-and-answer session.

The call will be available live, to interested parties by dialing 1-877-407-0784. For international callers, please dial [phone]. Please join the event 5-10 minutes prior to the scheduled start time. A live webcast of the conference call will be available in the investor relations section of the Company's website at: https://www.amtechsystems.com/investors/events. A replay of the webcast will be available in the Investor Relations section of the company’s web site approximately two hours after the conclusion of the call and will remain available for approximately 30 calendar days.

About Amtech Systems, Inc.

Amtech Systems, Inc. is a leading, global manufacturer of capital equipment, including thermal processing, wafer cleaning, chemical mechanical polishing (CMP) technology, and related consumables used in fabricating semiconductor devices, such as silicon carbide (SiC), silicon power, electronic assemblies and modules focusing on enabling technologies for electric vehicles (EV) and clean technology (CleanTech) applications. We sell process equipment and services to semiconductor device and module manufacturers worldwide, particularly in Asia, North America and Europe. Our strategic focus is on semiconductor growth opportunities in power electronics, sensors and analog devices leveraging our strength in core competencies in thermal and substrate processing. Amtech's products are recognized under the leading brand names BTU International, Entrepix, Inc., Bruce Technologies™, PR Hoffman™ and Intersurface Dynamics, Inc.

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Amtech Systems, Inc. Lisa D. Gibbs Chief Financial Officer 480-360-3756 [e-mail]

Sapphire Investor Relations, LLC Erica Mannion or Michael Funari 617-542-6180 [e-mail]