Amtech director acquires 8,081 shares via RSU exercise

Amtech Systems director Michael Garnreiter reported equity-award activity involving restricted stock units and common shares.

Rhea-AI Filing Summary

Amtech Systems director Michael Garnreiter reported equity-award activity involving restricted stock units and common shares. On March 4, he received a grant of 2,839 restricted stock units, each representing a contingent right to one share of Amtech Systems common stock.

On March 5, he exercised or converted 8,081 restricted stock units at a price of $0.00 per unit, acquiring 8,081 shares of Amtech Systems common stock. Following these transactions, he held 2,839 restricted stock units and 38,569 common shares, all reported as directly owned.

Insider Trade Summary

8,081 shares exercised/converted

Exercise 3 txns

Insider GARNREITER MICHAEL

Role Director

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	8,081	$0.00	$0.00
Exercise	Amtech Systems, Inc. $0.01 par value common stock	8,081	$0.00	$0.00
Grant/Award	Restricted Stock Units	2,839	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 5,678 contracts (Direct); Amtech Systems, Inc. $0.01 par value common stock — 38,569 shares (Direct)

Footnotes (1)

1. F1. Each restricted stock unit represents a contingent right to receive one share of Common Stock of Amtech Systems, Inc.

FAQ

What insider transactions did Amtech Systems (ASYS) director Michael Garnreiter report?

Michael Garnreiter reported equity-award related transactions, including a grant of 2,839 restricted stock units and the exercise or conversion of 8,081 restricted stock units into 8,081 shares of Amtech Systems common stock, all at a reported price of $0.00 per unit.

How many Amtech Systems (ASYS) shares does Michael Garnreiter hold after this Form 4?

After the reported transactions, Michael Garnreiter directly holds 38,569 shares of Amtech Systems common stock. The filing also shows that he directly holds 2,839 restricted stock units, each representing a contingent right to receive one additional share of Amtech Systems common stock.

What type of equity award did Michael Garnreiter receive from Amtech Systems (ASYS)?

He received 2,839 restricted stock units, each representing a contingent right to receive one share of Amtech Systems common stock. These units typically vest over time or upon meeting conditions, and they are reported as directly owned derivative securities in the Form 4 filing.

Did Michael Garnreiter buy or sell Amtech Systems (ASYS) shares on the open market?

The Form 4 shows no open-market purchases or sales. Instead, it reports a grant of restricted stock units and an exercise or conversion of 8,081 restricted stock units into 8,081 shares of common stock at a reported price of $0.00 per share.

What does each restricted stock unit represent in the Amtech Systems (ASYS) Form 4?

Each restricted stock unit represents a contingent right to receive one share of Amtech Systems common stock. This means the holder may receive one share for each unit upon vesting or satisfaction of applicable conditions, as described in the Form 4 footnote.

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Accepted by SEC EDGAR 03/06/2026 - 04:02 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

GARNREITER MICHAEL

(Last) (First) (Middle)

C/O AMTECH SYSTEMS, INC.

58 S. RIVER DRIVE, SUITE 370

(Street)

TEMPE AZ 85288

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
AMTECH SYSTEMS INC [ ASYS ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
03/04/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Amtech Systems, Inc. $0.01 par value common stock	03/05/2026		M		8,081	A	$0	38,569	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	(1)	03/04/2026		A		2,839		03/04/2027	03/04/2027	Amtech Systems, Inc. $0.01 par value common stock	2,839	$0	2,839	D
Restricted Stock Units	(1)	03/05/2026		M			8,081	03/05/2026	03/05/2026	Amtech Systems, Inc. $0.01 par value common stock	8,081	$0	2,839	D

Explanation of Responses:

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

	/s/ Mark Weaver by power of attorney	03/06/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
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