Michael Garnreiter - 04 Mar 2026 Form 4 Insider Report for AMTECH SYSTEMS INC (ASYS)

Reporting relationship: Director
Issuer ticker: ASYS
Reported as of: 04 Mar 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 06 Mar 2026, 16:02:53 UTC
Prior SEC filing: 04 Jun 2025
Next SEC filing: 13 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Mark Weaver by power of attorney

Key filing fact

Michael Garnreiter filed Form 4 for AMTECH SYSTEMS INC (ASYS) on 06 Mar 2026.

Key facts

This page summarizes Michael Garnreiter's Form 4 filing for AMTECH SYSTEMS INC (ASYS).
3 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 06 Mar 2026, 16:02.

Change

Previous filing in this sequence was filed on 04 Jun 2025.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001207669 Primary reporting owner

GARNREITER MICHAEL

Relationship: Director
Address: C/O AMTECH SYSTEMS, INC., 58 S. RIVER DRIVE, SUITE 370, TEMPE
Signature: /s/ Mark Weaver by power of attorney
Signature date: 06 Mar 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ASYS transaction

Amtech Systems, Inc. $0.01 par value common stock

Options Exercise

Transaction value
Shares: +8,081
Change %: +27%
Price: $0.000000^*
Shares after: 38,569
Date: 05 Mar 2026
Ownership: Direct

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

ASYS transaction Derivative

Restricted Stock Units

Award

Transaction value
Shares: +2,839
Change %
Price: $0.000000^*
Shares after: 2,839
Date: 04 Mar 2026
Ownership: Direct
Underlying class: Amtech Systems, Inc. $0.01 par value common stock
Underlying amount: 2,839
Exercise price
Footnotes: F1

ASYS transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -8,081
Change %: -74%
Price: $0.000000^*
Shares after: 2,839
Date: 05 Mar 2026
Ownership: Direct
Underlying class: Amtech Systems, Inc. $0.01 par value common stock
Underlying amount: 8,081
Exercise price
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

Each restricted stock unit represents a contingent right to receive one share of Common Stock of Amtech Systems, Inc.

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