Mark Weaver's Form 3 Filing - No Securities Owned as Interim CFO

This Form 3 filing reports that Mark Weaver, who serves as Interim Chief Financial Officer of Amtech Systems Inc, does not beneficially own any securities of the company as of December 16, 2025. The filing was submitted on May 14, 2026, and indicates that Weaver holds the position of Interim CFO but has no equity ownership in the company. Form 3 filings are required for officers, directors, and beneficial owners to disclose their initial ownership of company securities. The fact that this filing shows no securities owned is notable, as it indicates the interim CFO has not acquired any company stock in his official capacity. The filing was signed by Mark Weaver and confirms his role as an officer of the company without any ownership stake.