Amtech Systems (ASYS) Interim CFO Mark Weaver files initial Form 3

Rhea-AI Filing Summary

Amtech Systems, Inc. reported an initial insider ownership filing for Mark Weaver, who serves as Interim CFO. This Form 3 does not list any stock purchases, sales, option exercises, or other transactions, and functions as a baseline disclosure of his status as an officer.

Key Terms

Form 3, Interim CFO, transactionSummary

3 terms

Form 3 regulatory

"INSIDER FILING DATA (Form 3)"

Form 3 is the initial public filing that officers, directors and large shareholders must submit to report their ownership of a company’s securities when they become insiders. It acts like an opening inventory sheet that gives investors a starting point to see who holds significant stakes and to spot later trades or potential conflicts of interest, helping assess insider confidence and transparency.

Interim CFO financial

""officer_title": "Interim CFO""

An interim CFO is a temporary chief financial officer hired to run a company’s finance operations during a leadership transition, a search for a permanent hire, or while specific financial issues are resolved. Investors pay attention because this person manages budgeting, financial reporting and communications with shareholders—like a substitute driver keeping a car on course—so their competence affects short‑term financial stability, the accuracy of public reports, and market confidence.

transactionSummary financial

""transactionSummary": {"

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SEC Form 3

FORM 3

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

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

Weaver Mark

(Last) (First) (Middle)

C/O AMTECH SYSTEMS, INC.

58 S. RIVER DRIVE, SUITE 370

(Street)

TEMPE ARIZONA 85288

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
12/16/2025

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

3a. Foreign Trading Symbol

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

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

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

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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

No securities are beneficially owned.

No securities are beneficially owned.

	/s/ Mark Weaver	05/14/2026
	** 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 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)

FAQ

What does the Amtech Systems (ASYS) Form 3 filing for Mark Weaver show?

The Form 3 for Amtech Systems’ Interim CFO Mark Weaver is an initial ownership report. It lists him as an officer but shows no stock purchases, sales, or option exercises, establishing a baseline for future insider transaction reporting.

Did Amtech Systems’ Interim CFO buy or sell ASYS shares in this Form 3?

No, the Form 3 for Amtech Systems’ Interim CFO reports no share purchases or sales. The transaction summary shows zero buys, zero sells, and no derivative exercises, indicating this filing is purely an initial ownership disclosure without trading activity.

What role does Mark Weaver hold at Amtech Systems (ASYS) in this filing?

In this Form 3, Mark Weaver is identified as an officer of Amtech Systems with the title Interim CFO. This designation triggers ongoing insider reporting obligations but, in this filing, no specific share or option holdings are detailed.

Does the Amtech Systems Form 3 include any derivative securities for the Interim CFO?

No, the Form 3 shows an empty derivativeSummary and records zero derivative transactions. This means there are no listed options, warrants, or other derivative securities associated with Interim CFO Mark Weaver in this particular initial ownership report.

What does the transaction summary in the Amtech Systems (ASYS) Form 3 indicate?

The transaction summary reports zero buys, zero sells, zero exercises, and a netBuySellDirection of “neutral.” This confirms that the filing records no insider trading activity and simply establishes Mark Weaver’s reporting status as an officer.