Amtech Systems closes $60M oversubscribed public offering of 2.93M shares at $20.50

On June 1, 2026, Amtech Systems, Inc. (the “Company”) entered into an underwriting agreement (the “Underwriting Agreement”) with Titan Partners Group LLC, a division of American Capital Partners, LLC (the “Underwriter”), pursuant to which the Company agreed to issue and sell in an underwritten public offering (the “Offering”) an aggregate of 2,926,829 shares of its common stock, par value $0.01 per share (“Common Stock”), at a price to the public of $20.50 per share for aggregate gross proceeds of approximately $60 million, less underwriting discounts and commissions and offering expenses.