10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended: March 31, 2024

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from ________________ to ________________

Commission File Number: 0-11412

 

AMTECH SYSTEMS, INC.

(Exact name of registrant as specified in its charter)

Arizona	86-0411215
(State or other jurisdiction of	(I.R.S. Employer
incorporation or organization)	Identification No.)
58 South River Drive Suite 370, Tempe, Arizona	85288
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code: 480-967-5146

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, par value $0.01 per share	ASYS	NASDAQ Global Select Market

Indicate by a check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. ☒ Yes ☐ No

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). ☒ Yes ☐ No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.:

Large Accelerated Filer	☐	Accelerated Filer	☒
Non-Accelerated Filer	☐	Smaller Reporting Company	☒
		Emerging Growth Company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒

At May 3, 2024, there were outstanding 14,208,795 shares of Common Stock.

AMTECH SYSTEMS, INC. AND SUBSIDIARIES

TABLE OF CONTENTS

	Page
Cautionary Statement Regarding Forward-Looking Statements	3
PART I. FINANCIAL INFORMATION	4
Item 1. Condensed Consolidated Financial Statements	4
Condensed Consolidated Balance Sheets March 31, 2024 (Unaudited) and September 30, 2023	4
Condensed Consolidated Statements of Operations (Unaudited) Three and Six Months Ended March 31, 2024 and 2023	5
Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) Three and Six Months Ended March 31, 2024 and 2023	6
Condensed Consolidated Statements of Shareholders’ Equity (Unaudited) Three and Six Months Ended March 31, 2024 and 2023	7
Condensed Consolidated Statements of Cash Flows (Unaudited) Six Months Ended March 31, 2024 and 2023	8
Notes to Condensed Consolidated Financial Statements (Unaudited)	9
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations	26
Overview	26
Results of Operations	27
Liquidity and Capital Resources	30
Off-Balance Sheet Arrangements	33
Contractual Obligations	33
Critical Accounting Estimates	33
Impact of Recently Issued Accounting Pronouncements	34
Item 3. Quantitative and Qualitative Disclosures About Market Risk	34
Item 4. Controls and Procedures	34
PART II. OTHER INFORMATION	36
Item 1. Legal Proceedings	36
Item 1A. Risk Factors	36
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds	36
Item 3. Defaults Upon Senior Securities	36
Item 4. Mine Safety Disclosures	36
Item 5. Other Information	36
Item 6. Exhibits	37
SIGNATURES	38

2

Cautionary Note Regarding Forward-Looking Statements

Our discussion and analysis in this Quarterly Report on Form 10-Q ("Quarterly Report"), our Annual Report on Form 10-K for the fiscal year ended September 30, 2023 (the “2023 Form 10-K”), our other reports that we file with the Securities and Exchange Commission (“SEC”), our press releases and in public statements of our officers and corporate spokespersons contain “forward-looking” statements within the meaning of Section 27A of the Securities Act of 1933, as amended, Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and the Private Securities Litigation Reform Act of 1995. Forward-looking statements give our or our officers’ current expectations or forecasts of future events. You can also identify forward-looking statements by discussions of strategy, plans or intentions of management. We have tried, wherever possible, to identify such statements by using words such as “may,” “plan,” “anticipate,” “seek,” “will,” “expect,” “intend,” “estimate,” “believe,” “continue,” “predict,” “potential,” “project,” “should,” “would,” “could,” “likely,” “future,” “target,” “forecast,” “goal,” “observe,” and “strategy” or the negative thereof or variations thereon or similar terminology relating to the uncertainty of future events or outcomes. Any expectations based on these forward-looking statements are subject to risks and uncertainties and other important factors. Some factors that could cause actual results to differ materially from those anticipated include, among others, future economic conditions, including changes in the markets in which we operate; changes in demand for our services and products; our revenue and operating performance; difficulties in successfully executing our growth initiatives; difficulties in executing on our strategic initiatives with respect to our material and substrate business segment; the effects of competition in the markets in which we operate, including the adverse impact of competitive product announcements or new entrants into our markets and transfers of resources by competitors into our markets; the cyclical nature of the semiconductor industry; pricing and gross profit pressures; control of costs and expenses; risks associated with new technologies and the impact on our business; legislative, regulatory, and competitive developments in markets in which we operate; possible future claims, litigation or enforcement actions and the results of any such claim, litigation proceeding, or enforcement action; business interruptions, and any future pandemic on our business operations, financial results and financial position; risks of future cybersecurity incidents; adverse developments affecting financial institutions, including bank failures; failure to comply with financial and other covenants and other requirements under our credit agreement and forbearance agreement with UMB Bank, as well as the ability to extend, if necessary the forbearance period or obtain a waiver of the applicable defaults; and other circumstances and risks identified in this Quarterly Report or referenced from time to time in our filings with the SEC. The occurrence of the events described, and the achievement of expected results, depend on many events, some or all of which are not predictable or within our control. These and many other factors could affect Amtech’s future operating results and financial condition and could cause actual results to differ materially from expectations based on forward-looking statements made in this document or elsewhere by Amtech or on its behalf.

Forward-looking statements are neither historical facts nor assurances of future performance. Instead, they are based on our or our officers’ current beliefs, expectations and assumptions regarding the future of our business, future plans and strategies, projections, anticipated events and trends, the economy and other future conditions. Because forward-looking statements relate to the future, they are subject to certain risks and uncertainties. In light of these risks and uncertainties, there can be no assurance that the forward-looking information contained in this Annual Report on Form 10-K will in fact transpire or prove to be accurate. You should not place undue reliance on these forward-looking statements, which speak only as of the date they were made.

The Company undertakes no obligation to update or publicly revise any forward-looking statement whether as a result of new information, future developments or otherwise after the date of this Annual Report on Form 10-K. All subsequent written or oral forward-looking statements attributable to the Company or persons acting on its behalf are expressly qualified in their entirety by this cautionary statement. You are advised, however, to consult any further disclosures we make on related subjects in our subsequently filed Form 10-Q and Form 8-K reports and our other filings with the SEC. Also note that we provide a cautionary discussion of risks, uncertainties and possibly inaccurate assumptions relevant to our business under “Item 1A. Risk Factors” of this Annual Report on Form 10-K. We note these factors for investors as permitted by the Private Securities Litigation Reform Act of 1995. You should understand it is not possible to predict or identify all such factors.

Unless the context indicates otherwise, the terms “Amtech,” the “Company,” “we,” “us” and “our” refer to Amtech Systems, Inc., an Arizona corporation, together with its subsidiaries.

3

PART I. FINANCIAL INFORMATION

Item 1. Condensed Consolidated Financial Statements

AMTECH SYSTEMS, INC. AND SUBSIDIARIES

Condensed Consolidated Balance Sheets

(in thousands, except share data)

	March 31, 2024			September 30, 2023
Assets	(Unaudited)
Current Assets
Cash and cash equivalents	$	13,000		$	13,133
Accounts receivable (less allowance for credit losses of $115 and $146 at    March 31, 2024 and September 30, 2023, respectively)		21,230			26,474
Inventories		31,308			34,845
Income taxes receivable		457			632
Other current assets		4,304			6,105
Total current assets		70,299			81,189
Property, Plant and Equipment - Net		9,476			9,695
Right-of-Use Assets - Net		9,784			11,217
Intangible Assets - Net		4,352			6,114
Goodwill		21,261			27,631
Deferred Income Taxes - Net		123			101
Other Assets		1,179			1,074
Total Assets	$	116,474		$	137,021
Liabilities and Shareholders’ Equity
Current Liabilities
Accounts payable	$	6,741		$	10,815
Accrued compensation and related taxes		2,085			3,481
Accrued warranty expense		763			965
Other accrued liabilities		1,133			1,551
Current maturities of finance lease liabilities and long-term debt		4,243			2,265
Current portion of long-term operating lease liabilities		1,934			2,623
Contract liabilities		9,015			8,018
Total current liabilities		25,914			29,718
Finance Lease Liabilities and Long-Term Debt		65			8,422
Long-Term Operating Lease Liabilities		8,195			8,894
Income Taxes Payable		1,357			1,575
Other Long-Term Liabilities		52			47
Total Liabilities		35,583			48,656
Commitments and Contingencies (Note 10)
Shareholders’ Equity
Preferred stock; 100,000,000 shares authorized; none issued		—			—
Common stock; $0.01 par value; 100,000,000 shares authorized; shares    issued and outstanding: 14,208,795 and 14,185,977 at March 31, 2024    and September 30, 2023, respectively		142			142
Additional paid-in capital		127,658			126,963
Accumulated other comprehensive loss		(1,476	)		(1,695	)
Retained deficit		(45,433	)		(37,045	)
Total Shareholders’ Equity		80,891			88,365
Total Liabilities and Shareholders’ Equity	$	116,474		$	137,021

The accompanying notes are an integral part of these condensed consolidated financial statements.

4

AMTECH SYSTEMS, INC. AND SUBSIDIARIES

Condensed Consolidated Statements of Operations

(Unaudited)

(in thousands, except per share data)

	Three Months Ended March 31,						Six Months Ended March 31,
	2024			2023			2024			2023
Revenues, net	$	25,433		$	33,310		$	50,353		$	54,868
Cost of sales		16,982			19,840			32,834			33,095
Intangible asset impairment		—			—			849			—
Gross profit		8,451			13,470			16,670			21,773
Selling, general and administrative		8,252			11,434			16,819			20,624
Research, development and engineering		921			1,517			2,509			2,910
Gain on sale of fixed assets		(2,197	)		—			(2,197	)		—
Goodwill impairment		—			—			6,370			—
Intangible asset impairment		—			—			430			—
Severance expense		112			—			310			400
Operating income (loss)		1,363			519			(7,571	)		(2,161	)
Interest income		14			49			33			339
Interest expense		(193	)		(155	)		(391	)		(157	)
Foreign currency loss		—			(168	)		(187	)		(515	)
Other		9			13			9			4
Income (loss) before income tax provision		1,193			258			(8,107	)		(2,490	)
Income tax provision (benefit)		223			(2,946	)		281			(2,950	)
Net income (loss)	$	970		$	3,204		$	(8,388	)	$	460
Income (Loss) Per Share:
Net income (loss) per basic share	$	0.07		$	0.23		$	(0.59	)	$	0.03
Net income (loss) per diluted share	$	0.07		$	0.23		$	(0.59	)	$	0.03
Weighted average shares outstanding:
Basic		14,197			14,028			14,193			14,018
Diluted		14,209			14,157			14,193			14,142

The accompanying notes are an integral part of these condensed consolidated financial statements.

5

AMTECH SYSTEMS, INC. AND SUBSIDIARIES

Condensed Consolidated Statements of Comprehensive Income (Loss)

(Unaudited)

(in thousands)

	Three Months Ended March 31,					Six Months Ended March 31,
	2024			2023		2024			2023
Net income (loss)	$	970		$	3,204	$	(8,388	)	$	460
Foreign currency translation adjustment		(50	)		384		219			800
Comprehensive income (loss)	$	920		$	3,588	$	(8,169	)	$	1,260

The accompanying notes are an integral part of these condensed consolidated financial statements.

6

AMTECH SYSTEMS, INC. AND SUBSIDIARIES

Condensed Consolidated Statements of Shareholders’ Equity

(Unaudited)

(in thousands)

	Common Stock						Accumulated Other						Total
	Shares		Par Value		Additional Paid- In Capital		Comprehensive (Loss) Income			Retained  Deficit			Shareholders' Equity
Balance at September 30, 2022		13,994	$	140	$	124,458	$	(1,767	)	$	(24,463	)	$	98,368
Net loss		—		—		—		—			(2,744	)		(2,744	)
Translation adjustment		—		—		—		416			—			416
Stock compensation expense		—		—		164		—			—			164
Stock options exercised		9		—		34		—			—			34
Balance at December 31, 2022		14,003		140		124,656		(1,351	)		(27,207	)		96,238
Net income		—		—		—		—			3,204			3,204
Translation adjustment		—		—		—		384			—			384
Stock compensation expense		—		—		174		—			—			174
Stock options exercised		36		—		297		—			—			297
Balance at March 31, 2023		14,039	$	140	$	125,127	$	(967	)	$	(24,003	)	$	100,297
Balance at September 30, 2023		14,186	$	142	$	126,963	$	(1,695	)	$	(37,045	)	$	88,365
Net loss		—		—		—		—			(9,358	)		(9,358	)
Translation adjustment		—		—		—		269			—			269
Stock compensation expense		—		—		317		—			—			317
Stock options exercised		5		—		28		—			—			28
Balance at December 31, 2023		14,191		142		127,308		(1,426	)		(46,403	)		79,621
Net income		—		—		—		—			970			970
Translation adjustment		—		—		—		(50	)		—			(50	)
Stock compensation expense		—		—		350		—			—			350
Stock options exercised		18		—		—		—			—			—
Balance at March 31, 2024		14,209	$	142	$	127,658	$	(1,476	)	$	(45,433	)	$	80,891

The accompanying notes are an integral part of these condensed consolidated financial statements.

7

AMTECH SYSTEMS, INC. AND SUBSIDIARIES

Condensed Consolidated Statements of Cash Flows

(Unaudited)

(in thousands)

	Six Months Ended March 31,
	2024			2023
Operating Activities
Net (loss) income	$	(8,388	)	$	460
Adjustments to reconcile net (loss) income to net cash provided by (used in)    operating activities:
Depreciation and amortization		1,572			1,887
Write-down of inventory		940			517
Goodwill impairment		6,370			—
Intangible asset impairment		1,279			—
Deferred income taxes		(22	)		(3,172	)
Non-cash share-based compensation expense		667			338
Gain on sale of property, plant and equipment		(2,197	)		—
Provision for allowance for credit losses		—			156
Changes in operating assets and liabilities:
Accounts receivable		5,244			1,113
Inventories		2,617			(4,631	)
Other assets		3,163			2,215
Accounts payable		(3,462	)		(1,497	)
Accrued income taxes		(42	)		(1,192	)
Accrued and other liabilities		(3,432	)		(2,289	)
Contract liabilities		998			768
Net cash provided by (used in) operating activities		5,307			(5,327	)
Investing Activities
Purchases of property, plant and equipment		(1,976	)		(976	)
Proceeds from the sale of property, plant and equipment		2,700			—
Acquisition, net of cash and cash equivalents acquired		—			(35,498	)
Net provided by provided by (used in) investing activities		724			(36,474	)
Financing Activities
Proceeds from the exercise of stock options		28			331
Payments on long-term debt		(6,413	)		(412	)
Borrowings on long-term debt		—			12,000
Net cash (used in) provided by financing activities		(6,385	)		11,919
Effect of Exchange Rate Changes on Cash and Cash Equivalents		221			741
Net Decrease in Cash and Cash Equivalents		(133	)		(29,141	)
Cash and Cash Equivalents, Beginning of Period		13,133			46,874
Cash and Cash Equivalents, End of Period	$	13,000		$	17,733
Supplemental Cash Flow Information:
Income tax payments, net	$	323		$	1,529
Interest paid	$	391		$	94

The accompanying notes are an integral part of these condensed consolidated financial statements.

8

AMTECH SYSTEMS, INC. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

THREE AND SIX MONTHS ENDED MARCH 31, 2024 AND 2023

(UNAUDITED)

1. Basis of Presentation and Significant Accounting Policies

Nature of Operations and Basis of Presentation – Amtech is a leading, global manufacturer of capital equipment, including thermal processing, wafer polishing and cleaning, and related consumables used in fabricating semiconductor devices, such as silicon carbide ("SiC") and silicon power devices, analog and discrete devices, electronic assemblies and light-emitting diodes ("LEDs"). We sell these products to semiconductor device and module manufacturers worldwide, particularly in Asia, North America and Europe.

We serve niche markets in industries that are experiencing technological advances, and which historically have been very cyclical. Therefore, our future profitability and growth depend on our ability to develop or acquire and market profitable new products and on our ability to adapt to cyclical trends.

The accompanying unaudited condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (the “SEC”), and consequently do not include all disclosures normally required by accounting principles generally accepted in the United States of America (“GAAP”). In the opinion of management, the accompanying unaudited interim condensed consolidated financial statements contain all adjustments necessary, all of which are of a normal and recurring nature, to present fairly our financial position, results of operations and cash flows. Certain information and note disclosures normally included in financial statements have been condensed or omitted pursuant to the rules and regulations of the SEC. The condensed consolidated balance sheet at September 30, 2023, has been derived from the audited consolidated financial statements at that date but does not include all of the information and footnotes required by GAAP for complete financial statements. These unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in our Annual Report on Form 10-K for the fiscal year ended September 30, 2023.

Our fiscal year is from October 1 to September 30. Unless otherwise stated, references to particular years, quarters, months or periods refer to our fiscal years ending or ended September 30, and the associated quarters, months, and periods of those fiscal years.

The consolidated results of operations for the three and six months ended March 31, 2024, are not necessarily indicative of the results to be expected for the full fiscal year.

Principles of Consolidation – The consolidated financial statements include the accounts of the Company and our wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.

Use of Estimates – The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates.

Accounts Receivable and Allowance for Credit Losses – Accounts receivable are recorded at the sales price of products sold to customers on trade credit terms. We establish a valuation allowance to reflect our best estimate of expected losses inherent in our accounts receivable balance. The allowance is based on our evaluation of the aging of the receivables, historical write-offs, the current economic environment and communications with the customer. We write off individual accounts against the allowance when we no longer believe that it is probable that we will collect the receivable because we become aware of a customer’s inability to meet its financial obligations.

Intangible Assets – Intangible assets acquired in business combinations are capitalized and subsequently amortized on a straight-line basis over their estimated useful life. We regularly perform reviews to determine if facts and circumstances exist which indicate that the useful lives of our intangible assets are shorter than originally estimated

9

or the carrying amount of these assets may not be recoverable. When indicators exist, recoverability of assets is measured by a comparison of the carrying value of the asset group to the estimated undiscounted future net cash flows expected to be generated by the asset group. If the asset group is determined not to be recoverable, the Company performs an analysis of the fair value of the individual long-lived assets and will recognize an impairment loss when the fair value is less than the carrying value of such long-lived assets. Patent costs consist primarily of legal and filing fees incurred to file patents on proprietary methods and technology we developed. Patent costs are expensed when incurred, as they are insignificant. Additional information on impairment testing of intangible assets can be found in Notes 1 and 9 of our Annual Report on Form 10-K for the year ended September 30, 2023.

In the first quarter of fiscal year 2024, we recorded an impairment of definite lived intangible assets in our Material and Substrate segment. See Note 7 for a description of the facts and circumstances leading to the intangible asset impairment.

Goodwill – Goodwill is recorded when the purchase price paid for an acquisition exceeds the estimated fair value of net identified tangible and intangible assets acquired. Goodwill is not subject to amortization but is tested for impairment annually or when it is determined that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If it is concluded that there is impairment, we would recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value (although the loss would not exceed the total amount of goodwill allocated to the reporting unit). Additional information on impairment testing of goodwill can be found in Notes 1 and 10 of our Annual Report on Form 10-K for the year ended September 30, 2023.

In the first quarter of fiscal year 2024, we recorded an impairment of goodwill in our Material and Substrate segment. See Note 7 for a description of the facts and circumstances leading to goodwill impairment.

Contract Liabilities – Contract liabilities are reflected in current liabilities on the Condensed Consolidated Balance Sheets as all performance obligations are expected to be satisfied within the next 12 months. Contract liabilities relate to payments invoiced or received in advance of completion of performance obligations under a contract. Contract liabilities are recognized as revenue upon the fulfillment of performance obligations. Contract liabilities consist of customer deposits and deferred revenue as of March 31, 2024 and September 30, 2023.

The following is a summary of activity for contract liabilities, in thousands:

	Three Months Ended March 31,						Six Months Ended March 31,
	2024			2023			2024			2023
Beginning balance	$	9,518		$	6,955		$	8,018		$	7,231
New deposits		724			3,552			3,547			4,279
Deferred revenue		(9	)		—			(6	)		—
Revenue recognized		(1,218	)		(846	)		(2,544	)		(1,414	)
Adjustment		—			—			—			(435	)
Ending balance	$	9,015		$	9,661		$	9,015		$	9,661

As of March 31, 2024, we had approximately $44.3 million of remaining performance obligations, which included recognized contract liabilities as well as amounts to be invoiced and recognized in future periods. As of September 30, 2023, we had approximately $51.8 million of remaining performance obligations. The orders included in our remaining performance obligations are expected to ship within the next twelve months.

Warranty – A limited warranty is provided free of charge, generally for periods of 12 to 36 months to all purchasers of our new products and systems. Accruals are recorded for estimated warranty costs at the time revenue is recognized. While our warranty costs have historically been within our expectations and we believe that the amounts accrued for warranty expenditures are sufficient for all systems sold through March 31, 2024, we cannot guarantee that we will continue to experience a similar level of predictability regarding warranty costs. In addition, technological changes or previously unknown defects in raw materials or components may result in more extensive and frequent warranty service than anticipated, which could result in an increase in our warranty expense. Our accrued warranty expense was $0.8 million at March 31, 2024 and $1.0 million at September 30, 2023.

10

The following is a summary of activity in accrued warranty expense, in thousands:

	Six Months Ended March 31,
	2024			2023
Beginning balance	$	965		$	871
Additions for warranties issued during the period		97			342
Costs incurred during the period		(19	)		9
Changes in estimate for pre-existing warranties		(280	)		(139	)
Ending balance	$	763		$	1,083

Shipping Expense – Shipping and handling fees associated with outbound freight are expensed as incurred and included in selling, general and administrative expenses. Shipping expense was $0.5 million and $0.8 million for the three months ended March 31, 2024 and 2023, respectively, and $1.1 million and $1.4 million for the six months ended March 31, 2024 and 2023, respectively.

Concentrations of Credit Risk – Our customers are primarily manufacturers of semiconductor substrates and devices and electronic assemblies. Financial instruments that potentially subject us to significant concentrations of credit risk consist principally of cash and trade accounts receivable. Credit risk is managed by performing credit evaluations of the customers’ financial condition, by requiring significant deposits where appropriate, and by actively monitoring collections. Letters of credit are required of certain customers depending on the size of the order, type of customer or its creditworthiness, and country of domicile.

As of March 31, 2024, two Semiconductor segment customers each represented 14% of accounts receivable. As of September 30, 2023, two Semiconductor segment customers each represented 17% of accounts receivable.

We maintain our cash and cash equivalents in multiple financial institutions. Balances in the United States, which account for approximately 72% and 56% of total cash balances as of March 31, 2024 and September 30, 2023, respectively, are primarily invested in financial institutions insured by the FDIC as well as a money market account. The remainder of our cash is maintained with financial institutions with reputable credit in China, the United Kingdom, Singapore, and Malaysia. We maintain cash in bank accounts in amounts which at times may exceed federally insured limits. At March 31, 2024 and September 30, 2023 Amtech’s balances exceeded insured limits by approximately $8.2 million and $6.0 million. We have not experienced any losses on such accounts.

Refer to Note 12 to Condensed Consolidated Financial Statements for information regarding major customers, foreign sales and revenue in other countries subject to fluctuation in foreign currency exchange rates.

Fair Value of Financial Instruments – We group our financial assets and liabilities measured at fair value on a recurring basis into three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. These levels are:

Level 1 – Valuation is based upon quoted market price for identical instruments traded in active markets.

Level 2 – Valuation is based on quoted market prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market.

Level 3 – Valuation is generated from model-based techniques that use significant assumptions not observable in the market. Valuation techniques include use of discounted cash flow models and similar techniques.

It is our policy to use observable inputs whenever reasonably practicable in order to minimize the use of unobservable inputs when developing fair value measurements. When available, we use quoted market prices to measure fair value. If market prices are not available, the fair value measurement is based on models that use primarily market-based parameters including interest rate yield curves, option volatilities and currency rates. In certain cases, where market rate assumptions are not available, we are required to make judgments about assumptions market participants would

11

use to estimate the fair value of a financial instrument. Changes in the underlying assumptions used, including discount rates and estimates of future cash flows, could significantly affect current or future valuations.

Cash and Cash Equivalents – Included in cash and cash equivalents in the Consolidated Balance Sheets are money market funds and time deposit accounts. Cash equivalents are classified as Level 1 in the fair value hierarchy.

Receivables and Payables – The recorded amounts of these financial instruments, including accounts receivable and accounts payable, approximate their fair value because of the short maturities of these instruments.

Debt – The carrying value of debt under our amended Loan Agreement is based on a floating per annum rate of interest equal to the Prime Rate, adjusted daily, plus a margin. At March 31, 2024, the carrying value of the Company's total debt was $4.2 million, which approximates fair value. The fair value for the amended Loan Agreement was estimated by discounting the future cash flows using the current rates at which similar loans would be made to borrowers with similar credit ratings and is therefore classified as Level 2 in the fair value hierarchy.

Impact of Recently Issued Accounting Pronouncements

In December 2023, the FASB issued ASU 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures” (“ASU 2023-09”), which enhances the transparency and decision usefulness of income tax disclosures. Adjustments to the annual disclosure of income taxes include: a tabular rate reconciliation comprised of eight specific categories. Incomes taxes paid, disaggregated between significant federal, state, and foreign jurisdictions. Eliminating requirements to disclose the nature and estimate of reasonably possible changes to unrecognized tax benefits in the next 12 months or that an estimated range cannot be made. Adds a requirement to disclose income (or loss) from continuing operations before income tax expense (or benefit) and income tax expense (or benefit) from continuing operations disaggregated between domestic and foreign. The ASU is effective for public business entities for fiscal years beginning on or after December 15, 2024, with early adoption permitted. The amendments in ASU 2023-09 should be applied on a prospective basis. Retrospective application is permitted. This ASU is not expected to have a material effect on our financial condition or results of operations.

In November 2023, the FASB issued ASU 2023-07, “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures” (“ASU 2023-07”), which improves reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. The ASU is effective for public business entities for fiscal years beginning after December 15, 2023, and for interim reporting periods within fiscal years beginning after December 15, 2024. Early adoption permitted. The amendments in ASU 2023-07 should be applied retrospectively to all prior periods presented in the financial statements. We are currently evaluating the impact this guidance will have on our consolidated financial statements.

There were no other new accounting pronouncements issued or effective as of March 31, 2024 that had or are expected to have a material impact on our consolidated financial statements.

2. Long-Term Debt

Our finance lease liabilities and long-term debt consists of the following, in thousands:

	March 31, 2024			September 30, 2023
Revolving credit facility	$	—		$	—
Term loan		4,202			10,573
Finance leases		106			114
Total		4,308			10,687
Less: current portion of finance lease liabilities     and long-term debt		(4,243	)		(2,265	)
Finance Lease Liabilities and Long-Term Debt	$	65		$	8,422

12

Interest expense on finance lease liabilities and long-term debt was $0.2 million for the three months ended March 31, 2024 and 2023, and $0.4 million and $0.2 million for the six months ended March 31, 2024 and 2023, respectively.

Loan and Security Agreement

On January 17, 2023, we entered into a Loan and Security Agreement (the “Loan Agreement”) among Amtech, its U.S. based wholly owned subsidiaries Bruce Technologies, Inc., a Massachusetts corporation, BTU International, Inc., a Delaware corporation, Intersurface Dynamics, Incorporated, a Connecticut corporation, P.R. Hoffman Machine Products, Inc., an Arizona corporation, and Entrepix, Inc. (collectively the “Borrowers”), and UMB Bank, N.A., national banking association (the “Lender”). The Loan Agreement provides for (i) a term loan (the “Term Loan”) in the amount of $12.0 million maturing January 17, 2028, and (ii) a revolving loan facility (the “Revolver”) with an availability of $8.0 million maturing January 17, 2024. The recorded amount of the Term Loan has an interest rate of 6.38%. The Revolver has a floating per annum rate of interest equal to the Prime Rate, adjusted daily. Under the Loan Agreement, we are required to pay a non-utilization fee equal to 0.125% of any unused portion of the Revolver in excess of any letter of credit obligations.

The Term Loan and Revolver are secured by a first priority lien on substantially all of the Borrowers’ assets (other than certain customary excluded assets) and the Loan Agreement contains customary events of default, representations and warranties, and covenants that restrict the Borrowers’ ability to, among other things, incur additional indebtedness, other than permitted indebtedness, enter into mergers or acquisitions, sell or otherwise dispose of assets, or pay dividends, subject to customary exceptions.

The Loan Agreement additionally contains financial covenants such that, as of the end of each of their fiscal quarters, beginning March 31, 2023, the Borrowers must maintain (i) a ratio of consolidated debt owed to Lender to consolidated EBITDA (as defined in the Loan Agreement) for such fiscal quarter, of not greater than 1.50 to 1.00, through December 31, 2024, based on a building four quarters (as described in the Loan Agreement), and then 1.00 to 1.00 each fiscal quarter thereafter, (ii) a ratio of (a) the total for such fiscal quarter of EBITDAR (as defined in the Loan Agreement) minus the sum of all income taxes paid in cash plus cash dividends/distributions plus maintenance Capital Expenditures (as defined in the Loan Agreement) plus management fees paid in cash, to (b) the sum for such fiscal quarter of (1) Interest Charges (as defined in the Loan Agreement) plus (2) required payments of principal on Debt (as defined in the Loan Agreement) (including the Term Loan, but excluding the Revolver) plus (3) operating lease/rent expense, of not less than 1.30 to 1.00 based on a building four quarters (as described in the Loan Agreement), and (iii) a consolidated working capital of current assets (excluding related party receivables and prepaid expenses) minus current liabilities of at least $35.0 million.

At September 30, 2023, we were not in compliance with the Debt to EBITDA and Fixed Charge Coverage Ratio financial covenants under our Loan Agreement. On December 5, 2023, we entered into a Forbearance & Modification Agreement (the “Forbearance Agreement”) with UMB Bank related to such non-compliance, pursuant to which UMB Bank agreed to forbear from exercising its rights and remedies available to it as a result of such defaults. We will be operating under the terms of such Forbearance Agreement through January 17, 2025 (the “Forbearance Period”).

The Forbearance Agreement also amends the Loan Agreement to, among other things, (i) increase the availability under the revolving line of credit from $8.0 million to $14.0 million (the "Revolver"), and (ii) reduce the term loan commitment from $12.0 million to $4.4 million (the “Term Loan”). The Revolver maturity date was extended one year to January 17, 2025 and the Term Loan maturity date was extended one year to January 17, 2029. Both the Revolver and the Term Loan have a floating per annum rate of interest equal to the Prime Rate, adjusted daily, plus the Applicable Margin (as such terms are defined in the Loan Agreement). We are required to pay a non-utilization fee equal to 0.125% of any unused portion of the Revolver in excess of any letter of credit obligations. As of September 30, 2023, no amounts were borrowed against the Revolver and there were no letters of credit outstanding. As of the effective date of the Forbearance Agreement, $10.0 million was drawn under the Loan Agreement, which included $4.4 million under the Term Loan and $5.6 million under the Revolver. As of March 31, 2024, $4.2 million was

13

outstanding on the Term Loan, no amounts were borrowed against the Revolver, and there was an outstanding letter of credit in the amount of $0.3 million.

Future borrowings, if any, under the Loan Agreement are subject to, among other things, having sufficient unencumbered Eligible Accounts, Eligible Foreign Accounts and Eligible Inventory (as such terms are defined in the Loan Agreement) to meet the borrowing base requirements included in the amended Loan Agreement.

Under the amended Loan Agreement, the Company is required to comply with the following financial covenants:

•Maintaining, on a consolidated basis, a minimum EBITDA (as defined in the Loan Agreement) through the fiscal year ending September 30, 2024, measured on a quarterly basis (the “Minimum EBITDA Covenant”). The Minimum EBITDA Covenant amount increases each quarter during such period. At March 31, 2024, we were in compliance with the Minimum EBITDA Covenant for such period (not less than negative EBITDA of $800,000 for the six-month period ended March 31, 2024), with actual positive EBITDA of $1.0 million for such period. The Minimum EBITDA Covenant replaced the Senior Debt to EBITDA covenant set forth in the original Loan Agreement.

•As of the end of each of the Company’s fiscal years, commencing for the fiscal year ending September 30, 2024, the Company must maintain a ratio of (a) the total for such fiscal year of EBITDAR (as defined in the Loan Agreement) minus the sum of all income taxes paid in cash plus cash dividends/distributions plus maintenance Capital Expenditures (as defined in the Loan Agreement) plus management fees paid in cash, to (b) the sum for such fiscal quarter of (1) Interest Charges (as defined in the Loan Agreement) plus (2) required payments of principal on Debt (as defined in the Loan Agreement) (including the Term Loan, but excluding the Revolver) plus (3) operating lease/rent expense, of not less than 1.30 to 1.00 based on a trailing four (4) quarter basis (the “Fixed Charge Coverage Ratio Covenant”). Prior to entering into the Forbearance Agreement, this covenant was measured as of the end of each of the Company’s fiscal quarters, beginning March 31, 2023.

•As of the end of each of the Company’s fiscal quarters, commencing March 31, 2023, the Company must maintain a consolidated working capital of current assets (excluding related party receivables and prepaid expenses) minus current liabilities of at least $35.0 million. This financial covenant is unchanged in the Forbearance Agreement.

If the Lender does not extend the Forbearance Period or otherwise grant a waiver in the future for the covenant defaults described above, an event of default under the Loan Agreement would exist. To the extent the Lender so elects, the outstanding indebtedness under the Loan Agreement could be accelerated following the expiration of any applicable cure periods, causing such debt to be immediately due and payable. In addition, should the Company default in its obligation to comply with any of the covenants described immediately above during the Forbearance Period, an event of default would then exist, and, absent a further forbearance agreement or waiver granted by the Lender, the Lender would have the right to accelerate the indebtedness following the expiration of any applicable cure periods, causing such debt to be immediately due and payable. Both of the foregoing events would also result in the termination of all commitments to extend further credit under the Loan Agreement. There is no guarantee we will have sufficient liquidity to repay our outstanding debt under the Loan Agreement in full if such debt were accelerated. As of March 31, 2024, we had $13.0 million in cash and cash equivalents, and $4.2 million in debt under the Loan Agreement. If we are unable to pay such debt as it comes due, or obtain waivers for such payments, our Lender could foreclose on the assets securing such debt. These events could materially adversely affect our business, results of operations and financial condition. As of March 31, 2024, all outstanding debt under the Loan Agreement was classified as current as a result of the Lender’s ability, in its sole discretion, to call the amounts due thereunder at the end of the Forbearance Period.

Finance Lease Obligations

Our finance lease obligations totaled $0.1 million as of March 31, 2024 and September 30, 2023.

14

The current and long-term portions of our finance leases are included in the current and long-term portions of finance lease liabilities and long-term debt in the table above and in our Condensed Consolidated Balance Sheets as of March 31, 2024 and September 30, 2023. Further, see Note 6 for additional information.

3. Acquisition

Entrepix Merger

On January 17, 2023 (the “Closing Date”), the Company acquired 100% of the issued and outstanding shares of capital stock of Entrepix, Inc., an Arizona corporation (“Entrepix”), which primarily manufactures chemical mechanical polishing (“CMP”) technology, through a reverse triangular merger. Entrepix’s CMP technology portfolio and wafer cleaning equipment will complement our existing substrate polishing and wet process chemical offerings. Pursuant to the terms and conditions of the Agreement and Plan of Merger dated January 17, 2023 (the “Merger Agreement”), Emerald Merger Sub, Inc., a wholly-owned subsidiary of the Company (“Merger Sub”), merged with and into Entrepix (the “Merger”), resulting in Entrepix surviving the Merger and becoming a wholly-owned subsidiary of the Company (the “Acquisition” or “Transaction”).

On the Closing Date, in connection with the Merger Agreement and in contemplation of the Transaction, the Company entered into a Loan and Security Agreement with UMB Bank, N.A., under which the Lender provided the Company with (i) a $12.0 million term loan maturing January 17, 2028, and (ii) an $8.0 million revolving loan facility maturing January 17, 2024 (see Note 2). The proceeds of the Term Loan were used to partially fund the Transaction.

The Acquisition is accounted for using the acquisition method of accounting for business combinations under FASB Accounting Standard Codification Topic No. 805, Business Combinations (“ASC 805”), with Amtech representing the accounting acquirer under this guidance.

Summary of Consideration Transferred

The total consideration for the Acquisition was $39.2 million, consisting of $35.2 million cash consideration to the sellers and $4.0 million cash paid for debt and Entrepix transaction costs.

Goodwill is calculated as the excess of the consideration transferred over the net assets recognized and represents the estimated future economic benefits arising from other assets acquired that could not be individually identified and separately recognized. Such assets include synergies the Company expects to achieve, such as deeper penetration into an overlapping customer base, complementary product offerings, and cost redundancy reductions. In accordance with the measurement principles in FASB Accounting Standard Codification Topic No. 820, Fair Value Measurement, the purchase consideration for the Acquisition has been allocated under the acquisition method of accounting to the estimated fair market value of the net assets acquired, including a residual amount of goodwill, none of which is deductible for tax purposes. Amtech’s acquisition costs incurred were $2.5 million as of the year ended September 30, 2023, and were recorded as “Selling, general and administrative expenses” in the accompanying Condensed

15

Consolidated Statements of Operations. The following table summarizes the fair values assigned to identifiable assets acquired and liabilities assumed, in thousands:

	September 30, 2023
Fair value of total cash consideration transferred	$	39,227
Estimated fair value of identifiable assets acquired and liabilities assumed:
Cash and cash equivalents	$	4,289
Accounts receivable, net		5,884
Inventories		5,683
Other current assets		179
Property, plant, and equipment		2,040
Right-of-use assets		2,246
Intangible assets		13,600
Goodwill		16,463
Other assets		80
Total assets acquired		50,464
Accounts payable		1,574
Other accrued liabilities		1,994
Contract liabilities		1,949
Income taxes payable		985
Current portion of long-term operating lease liabilities		515
Long-term operating lease liabilities		1,730
Deferred tax liability		2,490
Total liabilities assumed		11,237
Net assets acquired	$	39,227

The establishment of the allocation to goodwill requires the extensive use of accounting estimates and management judgment. In accordance with ASC 805, the Company has up to one year from the acquisition date (referred to as the measurement period) to account for changes in the fair values of the identifiable assets acquired and the liabilities assumed in the acquired entity. As of January 17, 2024 the measurement period is closed.

The fair value associated with acquired intangible assets and their associated weighted-average amortization periods consist of the following, in thousands:

	Classification of Amortization	Amount		Weighted-Average Amortization Period
Developed technology	Cost of sales	$	6,700	5.0 years
Customer relationships	Selling, general and administrative		2,800	10.0 years
Backlog	Selling, general and administrative		2,100	1.0 year
Trade names	Selling, general and administrative		1,800	10.0 years
Noncompetition agreements	Selling, general and administrative		200	5.0 years
Total intangible assets		$	13,600	6.1 years

Unaudited Pro Forma Financial Information

The following unaudited pro forma financial information presents the combined results of operations of Amtech and Entrepix, in thousands, as if the acquisition occurred on October 1, 2021. The unaudited pro forma financial information is presented for informational purposes only and is not indicative of the results of operations that would have been achieved if the acquisition had taken place on the date indicated or of results that may occur in the future.

	Three Months Ended March 31,		Six Months Ended March 31,
	2023		2023
Revenues, Net	$	34,623	$	63,778
Net Income	$	4,285	$	1,149

The unaudited pro forma financial information presented above include the following adjustments:

16

3 Months Ended March 31, 2023

•reversal of amortization expense on intangible assets acquired of $0.5 million for the three months ended March 31, 2023;

•incremental interest expense on the Term Loan of $0.2 million for the three months ended March 31, 2023; and

•non-recurring adjustments directly attributable to the business combination.

6 Months Ended March 31, 2023

•incremental amortization expense on intangible assets acquired of $0.9 million for the six months ended March 31, 2023;

•incremental interest expense on the Term Loan of $0.3 million for the six months ended March 31, 2023; and

•non-recurring adjustments directly attributable to the business combination.

The unaudited pro forma financial information includes adjustments to align accounting policies, which were materially similar to the Company’s accounting policies. Any differences in accounting policies were adjusted to reflect the accounting policies of the Company in the unaudited pro forma financial information presented.

4. Earnings Per Share

Basic earnings per share (“EPS”) is computed by dividing net income by the weighted average number of common shares outstanding for the period. Diluted EPS is computed similarly to basic EPS except that the denominator is increased to include the number of additional common shares that would have been outstanding if potentially dilutive common shares had been issued. Dilutive potential common shares include outstanding restricted stock units (“RSUs”) and stock options. In the case of a net loss, diluted earnings per share is calculated in the same manner as basic EPS.

For the three and six months ended March 31, 2024, options for 817,191 and 645,244 weighted average shares, respectively, were excluded from the diluted EPS calculations because they were anti-dilutive. For the three and six months ended March 31, 2023, options for 327,000 and 293,000 weighted average shares, respectively, were excluded from the diluted EPS calculations because they were anti-dilutive. These shares could become dilutive in the future.

17

A reconciliation of the components of the basic and diluted EPS calculations follows, in thousands, except per share amounts:

	Three Months Ended March 31,				Six Months Ended March 31,
	2024		2023		2024			2023
Numerator:
Net income (loss)	$	970	$	3,204	$	(8,388	)	$	460
Denominator:
Weighted-average shares used to compute basic EPS		14,197		14,028		14,193			14,018
Dilutive potential common shares due to stock     options (1)		—		128		—			124
Dilutive potential common shares due to RSUs (1)		12		1		—			—
Weighted-average shares used to compute diluted EPS		14,209		14,157		14,193			14,142
Income (loss) per share:
Net income (loss) per basic share	$	0.07	$	0.23	$	(0.59	)	$	0.03
Net income (loss) per diluted share	$	0.07	$	0.23	$	(0.59	)	$	0.03

(1)The number of common stock equivalents is calculated using the treasury method and the average market price during the period.

5. Inventories

The components of inventories are as follows, in thousands:

	March 31, 2024		September 30, 2023
Purchased parts and raw materials	$	21,558	$	22,627
Work-in-process		7,058		7,774
Finished goods		2,692		4,444
	$	31,308	$	34,845

6. Leases

The following table provides information about the financial statement classification of our lease balances reported within the Condensed Consolidated Balance Sheets, in thousands:

	March 31, 2024		September 30, 2023
Assets
Right-of-use assets - operating	$	9,784	$	11,217
Right-of-use assets - finance		106		123
Total right-of-use assets	$	9,890	$	11,340
Liabilities
Current
Operating lease liabilities	$	1,934	$	2,623
Finance lease liabilities		41		64
Total current portion of long-term lease liabilities		1,975		2,687
Long-term
Operating lease liabilities		8,195		8,894
Finance lease liabilities		65		50
Total long-term lease liabilities		8,260		8,944
Total lease liabilities	$	10,235	$	11,631

18

The following table provides information about the financial statement classification of our lease expenses reported in the Condensed Consolidated Statements of Operations, in thousands:

		Three Months Ended March 31,				Six Months Ended March 31,
Lease cost	Classification	2024		2023		2024		2023
Operating lease cost	Cost of sales	$	373	$	688	$	1,118	$	1,149
Operating lease cost	Selling, general and administrative		464		202		668		379
Operating lease cost	Research, development and engineering		3		4		6		7
Finance lease cost	Cost of sales		1		1		2		2
Finance lease cost	Selling, general and administrative		22		18		42		36
Short-term lease cost	Cost of sales		—		9		—		17
Total lease cost		$	863	$	922	$	1,836	$	1,590

Future minimum lease payments under non-cancelable leases as of March 31, 2024 are as follows, in thousands:

	Operating Leases		Finance Leases		Total
Remainder of 2024	$	1,416	$	31	$	1,447
2025		2,059		29		2,088
2026		1,725		29		1,754
2027		1,106		21		1,127
2028		1,115		5		1,120
Thereafter		5,144		—		5,144
Total lease payments		12,565		115		12,680
Less: Interest		2,436		9		2,445
Present value of lease liabilities	$	10,129	$	106	$	10,235

Operating lease payments include $2.3 million related to options to extend lease terms that are reasonably certain of being exercised.

The following table provides information about the remaining lease terms and discount rates applied:

	March 31, 2024			September 30, 2023
Weighted average remaining lease term
Operating leases	7.72 years			7.31 years
Finance leases	4.88 years			2.54 years
Weighted average discount rate
Operating leases		5.60	%		5.50	%
Finance leases		5.52	%		4.91	%

During the fourth quarter of fiscal 2023 and the second quarter of fiscal 2024, we entered into leases that have not yet commenced. We expect to record $8.6 million of ROU asset and lease liability upon the commencement of these leases in the third quarter of fiscal 2024.

7. Goodwill and Intangible Assets

The Company accounts for goodwill at acquisition-date fair value and other finite intangibles at acquisition-date fair value less accumulated amortization. See Note 1 for a summary of the Company’s policies relating to goodwill and intangible assets.

19

Intangible Assets

The Company’s intangible assets, net consists of the following, in thousands:

		March 31,			September 30,
	Amortization Period	2024			2023
Backlog	1 year	$	2,100		$	2,100
Customer relationships	6-10 years		4,409			4,409
Developed technology	5 years		6,700			6,700
Noncompetition agreements	5 years		200			200
Trade names	3-15 years		2,679			2,679
			16,088			16,088
Accumulated amortization			(5,268	)		(4,785	)
Less asset impairments:
Backlog			(425	)		(425	)
Customer relationships			(339	)		(119	)
Developed technology			(5,494	)		(4,645	)
Noncompetition agreements			(160	)		—
Trade names			(50	)		—
Intangible assets, net		$	4,352		$	6,114

The estimated aggregate amortization expense for each of the five succeeding fiscal years as of March 31, 2024 is as follows, thousands:

Year ending September 30:	Amount
2024	$	348
2025		511
2026		511
2027		511
2028		511
Thereafter		1,960
Total	$	4,352

The aggregate amortization expense during the three months ended March 31, 2024 and 2023 was $0.2 million and $1.0 million, respectively. The aggregate amortization expense during the six months ended March 31, 2024 and 2023 were $0.5 million and $1.0 million, respectively.

During each fiscal year, we periodically assess whether any indicators of impairment existed related to our intangible assets. At the end of December 2023, we identified a triggering event. As a result of the decline in our stock price as of December 31, 2023, our book value materially exceeded our market value. This triggering event indicated we should test the related long-lived assets for impairment in our Material and Substrate segment. We tested each identified asset group within our Material and Substrate segment by first performing a recoverability test, comparing projected undiscounted cash flows from the use and eventual disposition of each asset group to its carrying value. This test indicated that the undiscounted cash flows were not sufficient to recover the carrying value of certain asset groups. We then compared the carrying value of the individual long-lived assets within those asset groups against their fair value in order to determine if impairment existed. Determining the fair value of those asset groups involves the use of significant estimates and assumptions, including projections of revenues and expenses and related cash flows based on assumed long-term growth rates and demand trends, and estimated discount rates based on the asset group's weighted average return on assets, as derived from various methods. The fair value of the intangible assets were estimated using various valuation methodologies, including the multi-period excess earnings method, the relief from royalty method and the distributor method. These fair value measurements fall under Level 3 of the fair value hierarchy. As a result, we recorded a total impairment charge for intangible assets in our Materials and Substrate

20

segment of $1.3 million during the quarter ended December 31, 2023. This impairment charge relates to developed technology, trade name, customer relationships and non-competition agreements at Entrepix.

Goodwill

The Company evaluates goodwill at the reporting unit level, which, for the Company, is at the level of the reportable segments, semiconductor and material and substrate. The changes in carrying amount of goodwill allocated to each of the reporting units for the six months ended March 31, 2024 is as follows, in thousands:

	Semiconductor		Material and Substrate			Total Goodwill
Goodwill	$	5,905	$	21,726		$	27,631
Accumulated impairment losses		—		—			—
Balance at September 30, 2023		5,905		21,726			27,631
Goodwill acquired		—		—			—
Impairment of goodwill		—		(6,370	)		(6,370	)
Balance at March 31, 2024	$	5,905	$	15,356		$	21,261
Goodwill	$	5,905	$	21,726		$	27,631
Accumulated impairment losses		—		(6,370	)		(6,370	)
Balance at March 31, 2024	$	5,905	$	15,356		$	21,261

During each fiscal year, we periodically assess whether any indicators of impairment exist which would require us to perform an interim impairment review. At the end of December 2023, we identified a triggering event. As a result of the decline in our stock price as of December 31, 2023, our book value materially exceeded our market value. This triggering event indicated we should test goodwill for impairment. The results of the goodwill impairment test indicated that the book value of our Material and Substrate reporting unit was in excess of the fair value, and, thus, was impaired. There was no impairment of goodwill identified for our Semiconductor reporting unit. As of the three months ended March 31, 2024, there was no new impairment of goodwill for either the Material and Substrate reporting unit or the Semiconductor reporting unit.

Determining the fair value of a reporting unit involves the use of significant estimates and assumptions. Our goodwill impairment test uses a weighting of the income approach and the market approach to estimate a reporting unit’s fair value. The income approach is based on a discounted future cash flow analysis that uses certain assumptions including: projections of revenues and expenses and related cash flows based on assumed long-term growth rates and demand trends; expected future investments and working capital requirements to sustain and grow the business; and estimated discount rates based on the reporting unit’s weighted average cost of capital as derived by the Capital Asset Pricing Model and other methods, which includes observable market inputs and other data from identified comparable companies. The same estimates are also used internally for our capital budgeting process, and for long-term and short-term business planning and forecasting. We test the reasonableness of the inputs and outcomes of our discounted cash flow analysis against available comparable market data, and we also perform a reconciliation of our total market capitalization to the estimated fair value of all of our reporting units. The market approach is based on the application of appropriate market-derived multiples selected from (i) comparable publicly-traded companies and/or (ii) the implied transaction multiples derived from identified merger and acquisition activity in the market. Multiples are then selected based on a comparison of the reviewed data to that of the reporting unit and applied to relevant historical and forecasted financial parameters such as levels of revenues, EBITDA, EBIT or other metrics. The calculation of fair value falls under Level 3 of the fair value hierarchy.

If the future performance of these reporting units fall short of our expectations, if there are significant changes in operations due to changes in market conditions or if our stock price continues to decline, we could be required to recognize additional material impairment charges in future periods.

21

8. Income Taxes

Our effective tax rate was (3.5%) and 118.0% for the six months ended March 31, 2024 and 2023, respectively. The effective tax rate for the six months ended March 31, 2024 differs from the U.S. statutory tax rate of 21% primarily due to losses for which no tax benefit can be recognized. The effective tax rate for the six months ended March 31, 2023 differs from the U.S. statutory tax rate of 21% primarily due to the release of a portion of our valuation allowance in connection with a deferred tax liability related to the Entrepix acquisition resulting in recognition of previously recorded deferred tax assets. For the three months ended March 31, 2024 and 2023, we recorded income tax expense of $0.2 million and an income tax benefit of $2.9 million, respectively. For the six months ended March 31, 2024 and 2023, we recorded an income tax expense of $0.3 million and income tax benefit of $3.0 million, respectively. The quarterly income tax provision is calculated using an estimated annual effective tax rate, based upon expected annual income, permanent items, statutory rates and planned tax strategies in the various jurisdictions in which we operate. However, losses in certain jurisdictions and discrete items are excluded from the determination of the estimated annual effective tax rate.

9. Equity and Stock-Based Compensation

Stock-based compensation expense was $0.3 million and $0.2 million in the three months ended March 31, 2024 and 2023, respectively, and $0.7 million and $0.3 million in the six months ended March 31, 2024 and 2023, respectively. Stock-based compensation expense is included in selling, general and administrative expenses.

The following table summarizes our stock option activity during the six months ended March 31, 2024:

	Options			Weighted Average Exercise Price
Outstanding at beginning of period		672,924		$	8.76
Granted		557,500			5.66
Exercised		(5,000	)		5.67
Forfeited		(43,991	)		9.63
Outstanding at end of period		1,181,433		$	7.28
Exercisable at end of period		424,643		$	8.49
Weighted average fair value of options granted during the period	$	2.44

The fair value of options was estimated at the applicable grant date using the Black-Scholes option pricing model with the following assumptions:

	Six Months Ended March 31,
	2024			2023
Risk free interest rate		4	%		4	%
Expected term	5 years			5 years
Dividend rate		—	%		—	%
Volatility		60	%		56	%

22

The following table summarizes our RSU activity during the six months ended March 31, 2024:

	Number			Weighted Average Grant Date Fair Value
Nonvested at beginning of year		75,977		$	9.15
Granted		24,897			4.82
Released		(20,421	)		9.55
Forfeited		—			—
Nonvested at end of period		80,453		$	7.71

2023 Stock Repurchase Plan

On February 7, 2023, our Board of Directors (the “Board”) approved a stock repurchase program, pursuant to which we may repurchase up to $5 million of our outstanding Common Stock over a one-year period, commencing on February 10, 2023. Repurchases under the program will be made in open market transactions at prevailing market prices, in privately negotiated transactions, or by other means in compliance with the rules and regulations of the Securities and Exchange Commission; however, we have no obligation to repurchase shares and the timing, actual number, and value of shares to be repurchased is subject to management’s discretion and will depend on our stock price and other market conditions. We may, in the sole discretion of the Board, terminate the repurchase program at any time while it is in effect. Repurchased shares may be retired or kept in treasury for further issuance. There were no repurchases during the quarter ended March 31, 2024. The term of this plan expired during the quarter ended March 31, 2024.

10. Commitments and Contingencies

Purchase Obligations – As of March 31, 2024, we had unrecorded purchase obligations in the amount of $16.3 million. These purchase obligations consist of outstanding purchase orders for goods and services. While the amount represents purchase agreements, the actual amounts to be paid may be less in the event that any agreements are renegotiated, canceled or terminated.

Legal Proceedings and Other Claims – From time to time, we are a party to claims and actions for matters arising out of our business operations. We regularly evaluate the status of the legal proceedings and other claims in which we are involved to assess whether a loss is probable or there is a reasonable possibility that a loss, or an additional loss, may have been incurred and determine if accruals are appropriate. If accruals are not appropriate, we further evaluate each legal proceeding to assess whether an estimate of possible loss or range of possible loss can be made for disclosure. Although the outcome of claims and litigation is inherently unpredictable, we believe that we have adequate provisions for any probable and estimable losses. It is possible, nevertheless, that our consolidated financial position, results of operations or liquidity could be materially and adversely affected in any period by the resolution of a claim or legal proceeding. Legal expenses related to defense, negotiations, settlements, rulings and advice of outside legal counsel are expensed as incurred.

Employment Contracts – We have employment contracts and change in control agreements with, and severance plans covering, certain officers and management employees under which severance payments would become payable in the event of specified terminations without cause or terminations under certain circumstances after a change in control. If severance payments under the current employment contracts or severance plans were to become payable, the severance payments would generally range from six to twelve months of salary.

23

11. Reportable Segments

Amtech has two operating segments that are structured around the types of product offerings provided to our customers. In addition, the operating segments may be further distinguished by the Company’s respective brands. These two operating segments comprise our two reportable segments discussed below. Our two reportable segments are as follows:

Semiconductor – We design, manufacture, sell and service thermal processing equipment and related controls for use by leading semiconductor manufacturers, and in electronics, automotive and other industries.

Material and Substrate – We produce consumables and machinery for lapping (fine abrading), polishing and cleaning of materials, such as sapphire substrates, optical components, silicon wafers, numerous types of crystal materials, ceramics and metal components.

Information concerning our reportable segments is as follows, in thousands:

	Three Months Ended March 31,						Six Months Ended March 31,
	2024			2023			2024			2023
Net Revenues:
Semiconductor	$	17,441		$	22,047		$	34,968		$	38,934
Material and Substrate		7,992			11,263			15,385			15,934
	$	25,433		$	33,310		$	50,353		$	54,868
Operating income (loss):
Semiconductor	$	896		$	2,950		$	1,977		$	3,819
Material and Substrate		900			297			(6,943	)		930
Non-segment related		(433	)		(2,728	)		(2,605	)		(6,910	)
	$	1,363		$	519		$	(7,571	)	$	(2,161	)

	March 31, 2024		September 30, 2023
Identifiable Assets:
Semiconductor	$	63,986	$	72,466
Material and Substrate		50,579		61,576
Non-segment related*		1,909		2,979
	$	116,474	$	137,021

* Non-segment related assets include cash, property, and other assets.

24

12. Major Customers and Foreign Sales

During the six months ended March 31, 2024, one Semiconductor segment customer represented 12% of our net revenues. During the six months ended March 31, 2023, two Semiconductor segment customers individually represented 12% and 11% of our net revenues.

Our net revenues were from customers in the following geographic regions:

	Six Months Ended March 31,
	2024			2023
United States		43	%		33	%
Canada		1	%		8	%
Mexico		1	%		3	%
Other		—	%		2	%
Total Americas		45	%		46	%
China		23	%		13	%
Malaysia		8	%		9	%
Taiwan		4	%		5	%
Other		4	%		9	%
Total Asia		39	%		36	%
Germany		8	%		2	%
Austria		1	%		6	%
Czech Republic		3	%		3	%
Other		4	%		7	%
Total Europe		16	%		18	%
		100	%		100	%

25

Item 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion and analysis of our financial condition and results of operations should be read in conjunction with our “Condensed Consolidated Financial Statements” in Item 1 of this Quarterly Report on Form 10-Q (“Quarterly Report”) and our consolidated financial statements and related notes included in “Item 8. Financial Statements and Supplementary Data” in our Annual Report on Form 10-K for the fiscal year ended September 30, 2023 (the “2023 Form 10-K”).

Overview

We are a leading, global manufacturer of capital equipment, including thermal processing and wafer polishing and related consumables used in fabricating semiconductor devices, such as silicon carbide ("SiC") and silicon power devices, analog and discrete devices, electronic assemblies, and light-emitting diodes ("LEDs"). We sell these products to semiconductor device and module manufacturers worldwide, particularly in Asia, North America and Europe.

We operate in two reportable segments, based primarily on the industries they serve: (i) Semiconductor and (ii) Material and Substrate. In our Semiconductor segment, we supply thermal processing equipment, including solder reflow ovens, horizontal diffusion furnaces, and custom high-temp belt furnaces for use by semiconductor, electronics and electro/mechanical assembly manufacturers. Our semiconductor customers are primarily manufacturers of integrated circuits and optoelectronic sensors and discrete ("O-S-D") components used in analog, power and radio frequency ("RF"). In our Material and Substrate segment, we produce wafer cleaning equipment as well as substrate consumables and chemicals for lapping (fine abrading) and polishing of materials, such as silicon wafers for semiconductor products, sapphire wafers for LED applications, and compound substrates, like SiC wafers, for power device applications.

The semiconductor industry is cyclical, but not seasonal, and historically has experienced fluctuations. Our revenue is impacted by these broad industry trends.

Strategy

We continue to focus on our plans to profitably grow our business and have developed a strategic growth plan and a capital allocation plan that we believe will support our growth objectives. Our Power Semiconductor strategic growth plan leverages our experience, products and capabilities in pursuit of growth, profitability and sustainability. Our core focus areas are:

•Advanced Mobility - Advanced Mobility encompasses both the development and adoption of electric vehicles and charging infrastructure, including both electric vehicle (EV) and hybrid electric vehicles (HEV), as well as advanced automotive electronics including Advanced Driver Assistance Systems (ADAS), infotainment and telematics. Our products intersect these markets in multiple ways: consumables and wafer cleaning systems for the SiC substrates used in power modules; thermal processing systems for cooling modules and DBC substrate manufacturing; and reflow ovens for ADAS, infotainment and telematics component assemblies.

•Supply Chain Resiliency - There is a global trend of creating supply chain resiliency by expanding and/or relocating operations outside of mainland China. These factory openings will create demand for new equipment and services in growing regions like Mexico and Southeast Asia.

•Artificial Intelligence - With Artificial Intelligence (AI), our reflow oven systems are the favored choice for Outsourced Semiconductor Assembly and Test Services (OSATS) providers who perform advanced packaging of the AI chips.

We anticipate future investments will be required to meet the expected demand from our growing served markets to achieve our revenue growth targets, including investments in research and development as well as capital expenditures, which also includes further investments in talent and management information systems. In June 2022, we completed the sale of the real property where our manufacturing facility in Massachusetts is located. In connection with this sale, we entered into a two-year leaseback of the facility. This sale-leaseback transaction resulted in a net cash inflow of

26

approximately $14.9 million, after repayment of the existing mortgage and settlement of related sale expenses. In September 2023, we signed a lease for a new location more in line with the needs of our Semiconductor product lines. The new location has less square footage as we expand our use of contract manufacturers. We expect to complete the move to this new facility in the third quarter of fiscal 2024. In March 2024, we completed the sale of our corporate headquarters real property in Arizona. The sale resulted in a net cash inflow of approximately $2.5 million, after settlement of related sale expenses. Following the closing of this transaction, we entered into a lease agreement for a new office for our corporate headquarters, which is expected to commence during the third quarter of fiscal year 2024. In addition, we are evaluating business continuity and resiliency within our operations, our management information systems, and our needs to allow for greater efficiencies and to ensure our infrastructure can support our future growth plans. As a capital equipment manufacturer, we will continue to invest in our business to drive future growth.

Results of Operations

The following table sets forth certain operational data as a percentage of net revenue for the periods indicated:

	Three Months Ended March 31,						Six Months Ended March 31,
	2024			2023			2024			2023
Revenues, net		100	%		100	%		100	%		100	%
Cost of sales		67	%		60	%		65	%		60	%
Intangible asset impairment		—	%		—	%		2	%		—	%
Gross margin		33	%		40	%		33	%		40	%
Selling, general and administrative		32	%		34	%		33	%		38	%
Research, development and engineering		4	%		4	%		5	%		5	%
Gain on sale of fixed assets		(9	)%		—	%		(4	)%		—	%
Goodwill impairment		—	%		—	%		13	%		—	%
Intangible asset impairment		—	%		—	%		1	%		—	%
Severance expense		—	%		—	%		—	%		1	%
Operating income (loss)		6	%		2	%		(15	)%		(4	)%
Interest income		—	%		—	%		—	%		—	%
Interest expense		(1	)%		—	%		(1	)%		—	%
Foreign currency loss		—	%		(1	)%		—	%		(1	)%
Other		—	%		—	%		—	%		—	%
Income (loss) before income taxes		5	%		1	%		(16	)%		(5	)%
Income tax provision (benefit)		1	%		(9	)%		1	%		(6	)%
Net income (loss)		4	%		10	%		(17	)%		1	%

Net Revenue

Net revenue consists of revenue recognized upon shipment or delivery of equipment. Spare parts sales are recognized upon shipment and service revenue is recognized upon completion of the service activity, which is generally ratable over the term of the service contract. Since the majority of our revenue is generated from large system sales, revenue, gross profit and operating income can be significantly impacted by the timing of system shipments.

Our net revenue by reportable segment was as follows, dollars in thousands:

	Three Months Ended March 31,										Six Months Ended March 31,
Segment	2024		2023		Change			% Change			2024		2023		Change			% Change
Semiconductor		17,441	$	22,047	$	(4,606	)		(21	)%		34,968	$	38,934	$	(3,966	)		(10	)%
Material and Substrate		7,992		11,263		(3,271	)		(29	)%		15,385		15,934		(549	)		(3	)%
Total net revenue	$	25,433	$	33,310	$	(7,877	)		(24	)%	$	50,353	$	54,868	$	(4,515	)		(8	)%

Total net revenue for the three months ended March 31, 2024 and 2023 was $25.4 million and $33.3 million, respectively, a decrease of approximately $7.9 million or 24%. Our Semiconductor results for the second quarter of fiscal 2024 reflect decreases in shipments of our belt furnaces, surface-mount technology (“SMT”) and packaging equipment. We continue to experience softness in shipments of our advanced packaging and SMT equipment,

27

primarily related to a slowdown in global demand in the consumer markets. Material and Substrate revenue decreased due to a lower sales of our wafer cleaning equipment and lower demand for spare parts.

Total net revenue for the six months ended March 31, 2024 and 2023 was $50.4 million and $54.9 million, respectively, a decrease of approximately $4.5 million or 8%. Revenue from the Semiconductor segment decreased $4.0 million compared to the prior year period. This change is primarily attributable to fewer shipments of our horizontal diffusion furnaces, SMT and packaging equipment partially offset by an increase in shipments of our belt furnaces. Revenue from our Material and Substrate segment decreased $0.5 million due to decreased shipments of consumables.

Orders and Backlog

New orders booked by reportable segment were as follows, dollars in thousands:

	Three Months Ended March 31,										Six Months Ended March 31,
Segment	2024		2023		Change			% Change			2024		2023		Change			% Change
Semiconductor	$	12,061	$	24,606	$	(12,545	)		(51	)%	$	29,189	$	45,690	$	(16,501	)		(36	)%
Material and Substrate		7,710		9,660		(1,950	)		(20	)%		13,687		13,805		(118	)		(1	)%
Total new orders	$	19,771	$	34,266	$	(14,495	)		(42	)%	$	42,876	$	59,495	$	(16,619	)		(28	)%

Our backlog by reportable segment was as follows, dollars in thousands:

	March 31,
Segment	2024		2023		Change			% Change
Semiconductor	$	39,455	$	54,767	$	(15,312	)		(28	)%
Material and Substrate		4,861		11,071		(6,210	)		(56	)%
Total backlog	$	44,316	$	65,838	$	(21,522	)		(33	)%

As of March 31, 2024, one of our Semiconductor segment customers individually accounted for 29% of our backlog. Additionally, one customer of both our Semiconductor and Material and Substrate segments accounted for 23% of our backlog. No other customer accounted for more than 10% of our backlog as of March 31, 2024. The orders included in our backlog are generally credit approved customer purchase orders believed to be firm and are generally expected to ship within the next twelve months. Our backlog at any particular point in time is not necessarily representative of actual sales for succeeding periods, nor is backlog any assurance that we will realize profit from completing these orders.

Gross Profit and Gross Margin

Gross profit is the difference between net revenue and cost of goods sold. Cost of goods sold consists of purchased material, labor and overhead to manufacture equipment and spare parts and the cost of service and support to customers for installation, warranty and paid service calls. Gross margin is gross profit as a percent of net revenue. Our gross profit and gross margin by business segment were as follows, dollars in thousands:

	Three Months Ended March 31,													Six Months Ended March 31,
Segment	2024		Gross Margin			2023		Gross Margin			Change			2024		Gross Margin			2023		Gross Margin			Change
Semiconductor	$	5,040		29	%	$	8,931		41	%	$	(3,891	)	$	11,199		32	%	$	15,103		39	%	$	(3,904	)
Material and Substrate		3,411		43	%		4,539		40	%		(1,128	)		5,471		36	%		6,670		42	%		(1,199	)
Total gross profit	$	8,451		33	%	$	13,470		40	%	$	(5,019	)	$	16,670		33	%	$	21,773		40	%	$	(5,103	)

Our gross margins can be affected by capacity utilization, material costs, and the type and volume of machines and consumables sold each quarter. Gross profit for the three months ended March 31, 2024 and 2023 was $8.5 million (33% of net revenue) and $13.5 million (40% of net revenue), respectively, a decrease of $5.0 million. Gross margin on products from our Semiconductor segment decreased due to changes in our product mix, higher material costs, and lower utilization at our Shanghai facility. Gross margin on products from our Material and Substrate segment increased

28

compared to the three months ended March 31, 2023, primarily due to a more favorable product mix, with increased consumable sales partially offset by lower equipment sales. We are experiencing increased material costs across all our segments. In response to such increased costs, we continually review our pricing plans and supplier agreements, with the objective of passing these increased costs to our customers where possible; however, we continue to experience pricing pressure from our customers. Additionally, there is the potential that our backlog could be negatively affected due to rising material costs. We are also exploring partnerships with contract manufacturers, who can leverage their buying power on a larger scale. In the first quarter of fiscal 2024, we began making targeted labor reductions as a result of the shift to contract manufacturing and the continuing slowdown in the broader semiconductor industry.

Gross profit for the six months ended March 31, 2024 and 2023 was $16.7 million (33% of net revenue) and $21.8 million (40% of net revenue), respectively, a decrease of $5.1 million. Gross margin on products from our Semiconductor segment decreased compared to the six months ended March 31, 2023 primarily due to changes in our product mix and increased material costs. Gross margin on products from our Material and Substrate segment decreased compared to the six months ended March 31, 2023 primarily due to an impairment charge of $0.8 million for intangible assets.

Selling, General and Administrative

Selling, general and administrative (“SG&A”) expenses consists of the cost of employees, consultants and contractors, facility costs, sales commissions, shipping costs, promotional marketing expenses, legal and accounting expenses and bad debt expense.

SG&A expenses for the three months ended March 31, 2024 and 2023 were $8.3 million and $11.4 million, respectively. SG&A decreased compared to the prior year quarter due primarily to decreased shipping expense on lower sales and decreased labor and employee-related expenses as a result of staff reductions across all of our divisions. Additionally, the prior year period included $1.5 million of transaction expenses related to the acquisition of Entrepix.

SG&A expenses for the six months ended March 31, 2024 and 2023 were $16.8 million and $20.6 million, respectively. SG&A decreased compared to the prior year period primarily due to decreased shipping expense on lower sales, decreased labor and employee-related expenses as a result of staff reductions across all of our divisions, and lower consulting fees. Additionally, the six months ended March 31, 2023 included $3.0 million of transaction expenses related to the acquisition of Entrepix.

Research, Development and Engineering

Research, development and engineering (“RD&E”) expenses consist of the cost of employees, consultants and contractors who design, engineer and develop new products and processes as well as materials and supplies used in producing prototypes. RD&E expenses may vary from period to period depending on the engineering projects in process. Expenses related to engineers working on strategic projects or sustaining engineering projects are recorded in RD&E. However, from time to time we add functionality to our products or develop new products during engineering and manufacturing to fulfill specifications in a customer’s order, in which case the cost of development, along with other costs of the order, are charged to cost of goods sold. Occasionally, we receive reimbursements through governmental research and development grants which are netted against these expenses when certain conditions have been met.

RD&E expense, net of grants earned, for the three months ended March 31, 2024 and 2023 were $0.9 million and $1.5 million, respectively, and $2.5 million and $2.9 million in the six months ended March 31, 2024 and 2023, respectively. The decrease in RD&E is due to the timing of purchases related to specific strategic-development projects at our Semiconductor segment. Grants earned are immaterial in all periods presented.

Goodwill Impairment

During the six months ended March 31, 2024, we recognized impairment of our goodwill of $6.4 million at our Material and Substrate segment as a result of a triggering event identified at the end of the first quarter.

29

Intangible Asset Impairment

During the six months ended March 31, 2024, we recognized impairment of our definite lived intangible assets of $1.3 million at our Material and Substrate segment. As stated above, $0.8 million of this impairment was recorded in cost of goods sold, and the remainder was recorded within operating expenses in the Condensed Consolidated Statement of Operations.

Severance Expense
 

Severance expense was $0.1 million for the three months ended March 31, 2024. There was no severance expense recorded in the three months ended March 31, 2023. Severance expense was $0.3 million and $0.4 million for the six months ended March 31, 2024 and 2023, respectively. For the three and six months ended March 31, 2024, the amount relates to staff reductions across all our divisions. Severance expense for the six months ended March 31, 2023 relates to the retirement of our founder, Mr. J.S. Whang.

Income Taxes

Our effective tax rate was (3.5%) and 118.0% for the six months ended March 31, 2024 and 2023, respectively. The effective tax rate for the six months ended March 31, 2024 differs from the U.S. statutory tax rate of 21% primarily due to losses for which no tax benefit can be recognized. The effective tax rate for the six months ended March 31, 2023 differs from the U.S. statutory tax rate of 21% primarily due to the release of a portion of our valuation allowance in connection with a deferred tax liability related to the Entrepix acquisition resulting in recognition of previously recorded deferred tax assets. For the three months ended March 31, 2024 and 2023, we recorded income tax expense of $0.2 million and an income tax benefit of $2.9 million, respectively. For the six months ended March 31, 2024 and 2023, we recorded income tax expense of $0.3 million and income tax benefit of $3.0 million, respectively. The quarterly income tax provision is calculated using an estimated annual effective tax rate, based upon expected annual income, permanent items, statutory rates and planned tax strategies in the various jurisdictions in which we operate. However, losses in certain jurisdictions and discrete items are excluded from the determination of the estimated annual effective tax rate.

Our future effective income tax rate depends on various factors, such as the amount of income (loss) in each tax jurisdiction, tax regulations governing each region, non-tax deductible expenses incurred as a percent of pre-tax income and the effectiveness of our tax planning strategies.

Liquidity and Capital Resources

Cash and Cash Flow

The following table sets forth for the periods presented certain consolidated cash flow information, in thousands:

	Six Months Ended March 31,
	2024			2023
Net cash provided by (used in) operating activities	$	5,307		$	(5,327	)
Net cash provided by (used in) investing activities		724			(36,474	)
Net cash (used in) provided by financing activities		(6,385	)		11,919
Effect of exchange rate changes on cash and cash equivalents		221			741
Net decrease in cash and cash equivalents		(133	)		(29,141	)
Cash and cash equivalents, beginning of period		13,133			46,874
Cash and cash equivalents, end of period	$	13,000		$	17,733

A summary of our cash position as of March 31, 2024 and September 30, 2023, is as follows, in thousands, except working capital ratio:

30

	March 31, 2024		September 30, 2023
Cash and cash equivalents	$	13,000	$	13,133
Restricted cash	$	—	$	—
Working capital	$	44,385	$	51,471
Current ratio (current assets to current liabilities)	2.7:1		2.7:1

The decrease in cash and cash equivalents from September 30, 2023 of $0.1 million was primarily due to payments on long-term debt and fixed asset purchases, partially offset by increased customer down payments, collections from customers and proceeds from the sale of our real property in Arizona. We maintain a portion of our cash and cash equivalents in Renminbis, a Chinese currency, at our operations in China; therefore, changes in the exchange rates have an impact on our cash balances. The decrease in working capital of $7.1 million (calculated in the table above) was primarily due to the decrease in accounts receivable and inventories.

During periods of weakening demand, we typically generate cash from operating activities, which we may decide to reinvest in our business via strategic projects. Conversely, we are more likely to use operating cash flows for working capital requirements during periods of higher growth. Our sources of capital in the past have included the sale of equity securities, which includes common stock sold in private transactions and public offerings, the incurrence of long-term debt and customer deposits. Additionally, in January 2023, we entered into the Loan Agreement with UMB Bank, which included a revolving line of credit with availability up to $8.0 million. On December 5, 2023, we amended this credit facility to, among other things, (i) increase the availability under the revolving line of credit from $8.0 million to $14.0 million (the “Revolver”), (ii) reduce the term loan commitment from $12.0 million to $4.4 million (the “Term Loan”), (iii) extend the maturity date of the Revolver one year to January 17, 2025 and the Term Loan one year to January 17, 2029. See the Forbearance Agreement disclosure under the heading Financing Facilities. Future borrowings, if any, under the Loan Agreement are subject to, among other things, having sufficient unencumbered Eligible Accounts, Eligible Foreign Accounts and Eligible Inventory (as such terms are defined in the Loan Agreement) to meet the borrowing base requirements included in the amended credit facility. There can be no assurance that we can raise such additional capital resources when needed or on satisfactory terms. We believe that our principal sources of liquidity discussed above are sufficient to support operations for at least the next twelve months.

Cash Flows from Operating Activities

Cash provided by our operating activities was $5.3 million for the six months ended March 31, 2024, compared to $5.3 million used in operating activities for the six months ended March 31, 2023. During the first half of fiscal 2024, our accounts receivable collections exceeded new accounts receivable due to the timing of shipments and collections. Additionally, we received more down payments from customers for future shipments during the quarter. During the six months ended March 31, 2023, we used cash to increase our inventory balances in preparation for shipments scheduled over the next four quarters and to pay the related accounts payable.

Cash Flows from Investing Activities

Cash provided by investing activities was $0.7 million for the six months ended March 31, 2024, compared to $36.5 million used in investing activities in the six months ended March 31, 2023. The fiscal 2024 amount consists of $2.7 million of proceeds from the sale of our real property in Arizona, partially offset by capital expenditures. The fiscal 2023 amount consists primarily of cash paid for the acquisition of Entrepix. We expect capital expenditures to increase in the third quarter of fiscal 2024 as we relocate our Massachusetts operations to a smaller facility.

Cash Flows from Financing Activities

For the six months ended March 31, 2024, cash used in financing activities was $6.4 million, primarily comprised of $6.4 million in payments on long-term debt. For the six months ended March 31, 2023, cash provided by financing activities was $11.9 million, comprised of $12.0 million in borrowings on debt facility and $0.3 million of proceeds received from the exercise of stock options partially offset by $0.4 million in payments on long-term debt.

Financing Facilities

Our debt balance as of March 31, 2024 was $4.3 million, including our finance lease obligations. As previously disclosed in our Form 10-K for the fiscal year ended September 30, 2023, at such date we were not in compliance

31

with the Debt to EBITDA and Fixed Charge Coverage Ratio financial covenants under our Loan Agreement. On December 5, 2023, we entered into a Forbearance & Modification Agreement (the “Forbearance Agreement”) with UMB Bank related to such non-compliance, pursuant to which UMB Bank agreed to forbear from exercising its rights and remedies available to it as a result of such defaults. We will be operating under the terms of such Forbearance Agreement through January 17, 2025 (the “Forbearance Period”).

The Forbearance Agreement also amends the Loan Agreement to, among other things, (i) increase the availability under the revolving line of credit from $8.0 million to $14.0 million (the "Revolver"), and (ii) reduce the term loan commitment from $12.0 million to $4.4 million (the “Term Loan”). The Revolver maturity date was extended one year to January 17, 2025 and the Term Loan maturity date was extended one year to January 17, 2029. Both the Revolver and the Term Loan have a floating per annum rate of interest equal to the Prime Rate, adjusted daily, plus the Applicable Margin (as such terms are defined in the Loan Agreement). We are required to pay a non-utilization fee equal to 0.125% of any unused portion of the Revolver in excess of any letter of credit obligations. As of September 30, 2023, no amounts were borrowed against the Revolver and there were no letters of credit outstanding. As of the effective date of the Forbearance Agreement, $10.0 million will be drawn under the Loan Agreement, which includes $4.4 million under the Term Loan and $5.6 million under the Revolver. As of March 31, 2024, $4.2 million was outstanding on the Term Loan, no amounts were borrowed against the Revolver, and there was an outstanding letter of credit in the amount of $0.3 million..

Future borrowings, if any, under the Loan Agreement are subject to, among other things, having sufficient unencumbered Eligible Accounts, Eligible Foreign Accounts and Eligible Inventory (as such terms are defined in the Loan Agreement) to meet the borrowing base requirements included in the amended Loan Agreement.

Under the Loan Agreement, as amended by the Forbearance Agreement, the Company is required to comply with the following financial covenants:

•Maintaining, on a consolidated basis, a minimum EBITDA (as defined in the Loan Agreement) through the fiscal year ending September 30, 2024, measured on a quarterly basis (the “Minimum EBITDA Covenant”). The Minimum EBITDA Covenant amount increases each quarter during such period. At March 31, 2024, we were in compliance with the Minimum EBITDA Covenant for such period (not less than negative EBITDA of $800,000 for the six-month period ended March 31, 2024), with actual positive EBITDA of $1.0 million for such period. The Minimum EBITDA Covenant replaced the Senior Debt to EBITDA covenant set forth in the original Loan Agreement.

•As of the end of each of the Company’s fiscal years, commencing for the fiscal year ending September 30, 2024, the Company must maintain a ratio of (a) the total for such fiscal year of EBITDAR (as defined in the Loan Agreement) minus the sum of all income taxes paid in cash plus cash dividends/distributions plus maintenance Capital Expenditures (as defined in the Loan Agreement) plus management fees paid in cash, to (b) the sum for such fiscal quarter of (1) Interest Charges (as defined in the Loan Agreement) plus (2) required payments of principal on Debt (as defined in the Loan Agreement) (including the Term Loan, but excluding the Revolver) plus (3) operating lease/rent expense, of not less than 1.30 to 1.00 based on a trailing four (4) quarter basis (the “Fixed Charge Coverage Ratio Covenant”). Prior to entering into the Forbearance Agreement, this covenant was measured as of the end of each of the Company’s fiscal quarters, beginning March 31, 2023.

•As of the end of each of the Company’s fiscal quarters, commencing March 31, 2023, the Company must maintain a consolidated working capital of current assets (excluding related party receivables and prepaid expenses) minus current liabilities of at least $35.0 million. This financial covenant is unchanged in the Forbearance Agreement.

If the Lender does not extend the Forbearance Period or otherwise grant a waiver in the future for the covenant defaults described above, an event of default under the Loan Agreement would exist. To the extent the Lender so elects, the outstanding indebtedness under the Loan Agreement could be accelerated following the expiration of any applicable cure periods, causing such debt to be immediately due and payable. In addition, should the Company default in its obligation to comply with any of the covenants described immediately above during the Forbearance Period, an event of default would then exist, and, absent a further forbearance agreement or waiver granted by the Lender, the Lender

32

would have the right to accelerate the indebtedness following the expiration of any applicable cure periods, causing such debt to be immediately due and payable. Both of the foregoing events would also result in the termination of all commitments to extend further credit under the Loan Agreement. There is no guarantee we will have sufficient liquidity to repay our outstanding debt under the Loan Agreement in full if such debt were accelerated. As of March 31, 2024, we had $13.0 million in cash and cash equivalents, and $4.2 million in debt under the Loan Agreement. If we are unable to pay such debt as it comes due, or obtain waivers for such payments, our Lender could foreclose on the assets securing such debt. These events could materially adversely affect our business, results of operations and financial condition. As of March 31, 2024, all outstanding debt under the Loan Agreement was classified as current as a result of the Lender’s ability, in its sole discretion, to call the amounts due thereunder at the end of the Forbearance Period.

The Loan Agreement also includes quarterly and annual reporting requirements and other customary affirmative and negative covenants and events of default for facilities of this type. At March 31, 2024, we were in compliance with all such covenants.

Off-Balance Sheet Arrangements

As of March 31, 2024, we had no off-balance sheet arrangements as defined in Item 303(a)(4) of Regulation S-K promulgated by the SEC that have or are reasonably likely to have a current or future effect on financial condition, changes in financial condition, revenues or expenses, results of operations, liquidity, capital expenditures or capital resources that are material to investors.

Contractual Obligations

Unrecorded purchase obligations were $16.3 million as of March 31, 2024, compared to $24.3 million as of September 30, 2023, a decrease of $8.0 million.

Other than as described in Note 2, there were no material changes to the contractual obligations included in "Part II, Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations” of our 2023 Form 10-K.

Critical Accounting Estimates

"Part I, Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations” of this Quarterly Report discusses our condensed consolidated financial statements that have been prepared in accordance with GAAP. The preparation of these condensed consolidated financial statements requires us to make estimates and assumptions that affect the reported amount of assets and liabilities at the date of the condensed consolidated financial statements, the disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenue and expenses during the reporting period.

On an ongoing basis, we evaluate our estimates and judgments, including those related to revenue recognition, income taxes, inventory valuation, business combination, goodwill, and long-lived asset impairment. We base our estimates and judgments on historical experience, expectations regarding the future and on various other factors that we believe to be reasonable under the circumstances. The results of these estimates and judgments form the basis for making conclusions about the carrying value of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.

A critical accounting estimate is one that is both important to the presentation of our financial position and results of operations, and requires management’s most difficult, subjective or complex judgments, often as a result of the need to make estimates about the effect of matters that are inherently uncertain. These uncertainties are discussed in Part I, Item 1A of our 2023 Form 10-K. We believe our critical accounting estimates relate to the more significant judgments and estimates used in the preparation of our consolidated financial statements.

We believe the critical accounting estimates discussed in the section entitled “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations – Critical Accounting Policies” in our 2023 Form 10-K

33

represent the most significant judgments and estimates used in the preparation of our consolidated financial statements. There have been no material changes in our critical accounting estimates during the six months ended March 31, 2024.

Impact of Recently Issued Accounting Pronouncements

For discussion of the impact of recently issued accounting pronouncements, see “Part I, Item 1. Financial Information” under “Impact of Recently Issued Accounting Pronouncements.”

Item 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

As a smaller reporting company, as defined by Rule 12b-2 of the Exchange Act and in Item 10(f)(1) of Regulation S-K, we are electing scaled disclosure reporting obligations and, therefore, are not required to provide the information requested by this Item.

Item 4. CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures.

We maintain “disclosure controls and procedures,” as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), that are designed to ensure that information required to be disclosed in the reports that we file or submit under the Exchange Act is (1) recorded, processed, summarized and reported, within the time periods specified in the SEC’s rules and forms and (2) accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, to allow timely decisions regarding required disclosure. Management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving their objectives and management necessarily applies its judgment in evaluating the cost-benefit relationship of possible controls and procedures.

Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness of our disclosure controls and procedures as of March 31, 2024. Based upon the evaluation, our Chief Executive Officer and Chief Financial Officer concluded that, as of such date, our disclosure controls and procedures were not effective at a reasonable assurance level, due to the material weaknesses previously identified and disclosed in our 2023 Form 10-K and listed below. A material weakness is a deficiency, or combination of deficiencies, in internal control over financial reporting (“ICFR”) such that there is a reasonable possibility that a material misstatement of our annual or interim financial statements will not be prevented or detected on a timely basis.

Changes in Internal Control over Financial Reporting

Other than as discussed below, there were no other changes to our internal control over financial reporting during the six months ended March 31, 2024, that have materially affected, or that are reasonably likely to materially affect, our internal control over financial reporting.

We closed on the acquisition of Entrepix during the year ended September 30, 2023. We have evaluated the existing controls and procedures of Entrepix and integrated our internal control structure over this acquired business.

Remediation Plan for Existing Material Weaknesses

We are in the process of, and continue to focus on, designing and implementing effective measures to strengthen our ICFR and remediate the material weaknesses disclosed in our 2023 Form 10-K.

In relation to the material weakness identified in the areas of goodwill and intangible assets, we have evaluated the design of internal controls over non-routine and complex transactions, including the preparation and review of the third-party service provider valuation reports. Management engaged a new valuation firm to perform the impairment assessment for goodwill and intangible assets for the quarter ended December 31, 2023.

With respect to the material weakness related to general information technology controls, our management, under the oversight of our Audit Committee, has evaluated the current processes and has redesigned existing controls and

34

implemented new controls to remediate the control deficiencies giving rise to this material weakness. Remediation efforts include, but are not limited to:

•Assessing and formalizing the design of certain information technology policies.

•Developing monitoring controls and protocols that will allow us to timely assess the design and operating effectiveness of the new controls.

•Strengthening of user access reviews and enhanced procedures surrounding program change management for systems supporting substantially all of the Company’s internal control processes.

•Assessing segregation of duties within the Company’s business processes.

The material weaknesses will not be considered remediated until the applicable controls operate for a sufficient period of time and management has concluded, through testing, that these controls are operating effectively. We anticipate that the remediation of this material weakness will be completed during fiscal year 2024. We are committed to continuing to improve our internal control processes, and, as we continue to evaluate and work to improve our internal control over financial reporting, we may take additional measures to address control deficiencies, or we may modify certain of our remediation measures.

35

PART II. OTHER INFORMATION

Item 1. Legal Proceedings

For discussion of legal proceedings, see Note 10 to our condensed consolidated financial statements under “Part I, Item 1. Financial Information” under “Commitments and Contingencies” of this Quarterly Report.

Item 1A. Risk Factors

We refer you to documents filed by us with the SEC, specifically “Item 1A. Risk Factors” in our 2023 Form 10-K, which identifies important risk factors that could materially affect our business, financial condition and future results. We also refer you to the factors and cautionary language set forth in the section entitled “Cautionary Statements Regarding Forward-Looking Statements” immediately preceding “Item 1. Condensed Consolidated Financial Statements” of this Quarterly Report. This Quarterly Report, including the accompanying condensed consolidated financial statements and related notes, should be read in conjunction with such risks and other factors for a full understanding of our operations and financial condition. The risks described in our 2023 Form 10-K and any described herein are not the only risks facing us. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial also may materially adversely affect our business, financial condition or operating results. There have been no material changes to the risk factors previously disclosed in our 2023 Form 10-K and our Form 10-Q for the quarter ended December 31, 2023.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

Issuer Purchases of Equity Securities

On February 7, 2023, the Board approved a stock repurchase program, pursuant to which the Company may repurchase up to $5 million of its outstanding Common Stock over a one-year period, commencing on February 10, 2023. Repurchases under the program will be made in open market transactions at prevailing market prices, in privately negotiated transactions, or by other means in compliance with the rules and regulations of the Securities and Exchange Commission; however, the Company has no obligation to repurchase shares and the timing, actual number, and value of shares to be repurchased is subject to management’s discretion and will depend on the Company’s stock price and other market conditions. The Company may, in the sole discretion of the Board, terminate the repurchase program at any time while it is in effect. Repurchased shares may be retired or kept in treasury for further issuance. The term of this plan expired during the quarter ended March 31, 2024.

During the six months ended March 31, 2024, we did not repurchase any of our equity securities nor did we sell any equity securities that were not registered under the Securities Act of 1933, as amended.

Item 3. Defaults Upon Senior Securities

None.

Item 4. Mine Safety Disclosures

Not applicable.

Item 5. Other Information

During the three months ended March 31, 2024, none of our directors or officers (as defined in Rule 16a-1(f) promulgated under the Securities Exchange Act of 1934, as amended) adopted, terminated, or modified a Rule 10b5-1 trading arrangement or a non-Rule 10b5-1 trading arrangement (as such terms are defined in Item 408 of Regulation S-K).

36

Item 6. Exhibits

EXHIBIT		INCORPORATED BY REFERENCE				FILED
NO.	EXHIBIT DESCRIPTION	FORM	FILE NO.	EXHIBIT NO.	FILING DATE	HEREWITH
31.1	Certification Pursuant to Rule 13a-14(a)/15d-14(a) of the Securities Exchange Act of 1934, as Amended					X
31.2	Certification Pursuant to Rule 13a-14(a)/15d-14(a) of the Securities Exchange Act of 1934, as Amended					X
32.1	Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002					X
32.2	Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002					X
101.INS	Inline XBRL Instance Document – the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.					X
101.SCH	Inline XBRL Taxonomy Extension Schema With Embedded Linkbase Documents					X
104	Cover Page Interactive Data File (embedded within the Inline XBRL document)					X

37

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

AMTECH SYSTEMS, INC.

By	/s/ Lisa D. Gibbs	Dated:	May 8, 2024
	Lisa D. Gibbs
	Vice President and Chief Financial Officer
	(Principal Financial Officer and Duly Authorized Officer)

38

EX-31.1

Exhibit 31.1

AMTECH SYSTEMS, INC. AND ITS SUBSIDIARIES

CERTIFICATION PURSUANT TO RULE 13a-14(a)/15d-14(a)

OF THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED

I, Robert C. Daigle, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Amtech Systems, Inc. (the “registrant”),

2.Based on my knowledge, this quarterly report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this quarterly report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this quarterly report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

By	/s/ Robert C. Daigle
	Robert C. Daigle
	Chairman of the Board and Chief Executive Officer
	Amtech Systems, Inc.
Date:	May 8, 2024

EX-31.2

Exhibit 31.2

AMTECH SYSTEMS, INC. AND ITS SUBSIDIARIES

CERTIFICATION PURSUANT TO RULE 13a-14(a)/15d-14(a)

OF THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED

I, Lisa D. Gibbs, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Amtech Systems, Inc. (the “registrant”),

2.Based on my knowledge, this quarterly report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this quarterly report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this quarterly report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

By	/s/ Lisa D. Gibbs
	Lisa D. Gibbs
	Vice President and Chief Financial Officer
	Amtech Systems, Inc.
Date:	May 8, 2024

EX-32.1

Exhibit 32.1

AMTECH SYSTEMS, INC. AND ITS SUBSIDIARIES

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Amtech Systems, Inc. (the “Company”) on Form 10-Q for the period ended March 31, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Robert C. Daigle, Chairman of the Board and Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of my knowledge:

(1)The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

By	/s/ Robert C. Daigle
	Robert C. Daigle
	Chairman of the Board and Chief Executive Officer
	Amtech Systems, Inc.
Date:	May 8, 2024

The foregoing certification is being furnished pursuant to 18 U.S.C. Section 1350. It is not being filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and it is not to be incorporated by reference into any filing of the Company, regardless of any general incorporation language in such filing.

EX-32.2

Exhibit 32.2

AMTECH SYSTEMS, INC. AND ITS SUBSIDIARIES

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Amtech Systems, Inc. (the “Company”) on Form 10-Q for the period ended March 31, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Lisa D. Gibbs, Vice President and Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. sections 1350, as adopted pursuant to sections 906 of the Sarbanes-Oxley Act of 2002, that, to the best of my knowledge:

(1)The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

By	/s/ Lisa D. Gibbs
	Lisa D. Gibbs
	Vice President and Chief Financial Officer
	Amtech Systems, Inc.
Date:	May 8, 2024

The foregoing certification is being furnished pursuant to 18 U.S.C. Section 1350. It is not being filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and it is not to be incorporated by reference into any filing of the Company, regardless of any general incorporation language in such filing.

XML

Document and Entity Information - shares	6 Months Ended
	Mar. 31, 2024	May 03, 2024
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2024
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q2
Entity Registrant Name	AMTECH SYSTEMS, INC.
Entity Central Index Key	0000720500
Current Fiscal Year End Date	--09-30
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		14,208,795
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity File Number	0-11412
Entity Tax Identification Number	86-0411215
Entity Address, Address Line One	58 South River Drive Suite 370
Entity Address, City or Town	Tempe
Entity Address, State or Province	AZ
Entity Address, Postal Zip Code	85288
City Area Code	480
Local Phone Number	967-5146
Entity Interactive Data Current	Yes
Entity Incorporation, State or Country Code	AZ
Document Quarterly Report	true
Document Transition Report	false
Trading Symbol	ASYS
Title of 12(b) Security	Common Stock, par value $0.01 per share
Security Exchange Name	NASDAQ

XML

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2024	Sep. 30, 2023
Current Assets
Cash and cash equivalents	$ 13,000	$ 13,133
Accounts receivable (less allowance for credit losses of $115 and $146 at March 31, 2024 and September 30, 2023, respectively)	21,230	26,474
Inventories	31,308	34,845
Income taxes receivable	457	632
Other current assets	4,304	6,105
Total current assets	70,299	81,189
Property, Plant and Equipment - Net	9,476	9,695
Right-of-Use Assets - Net	9,784	11,217
Intangible Assets - Net	4,352	6,114
Goodwill	21,261	27,631
Deferred Income Taxes - Net	123	101
Other Assets	1,179	1,074
Total Assets	116,474	137,021
Current Liabilities
Accounts payable	6,741	10,815
Accrued compensation and related taxes	2,085	3,481
Accrued warranty expense	763	965
Other accrued liabilities	1,133	1,551
Current maturities of finance lease liabilities and long-term debt	4,243	2,265
Current portion of long-term operating lease liabilities	1,934	2,623
Contract liabilities	9,015	8,018
Total current liabilities	25,914	29,718
Finance Lease Liabilities and Long-Term Debt	65	8,422
Long-Term Operating Lease Liabilities	8,195	8,894
Income Taxes Payable	1,357	1,575
Other Long-Term Liabilities	52	47
Total Liabilities	35,583	48,656
Commitments and Contingencies (Note 10)
Shareholders’ Equity
Preferred stock; 100,000,000 shares authorized; none issued
Common stock; $0.01 par value; 100,000,000 shares authorized; shares issued and outstanding: 14,208,795 and 14,185,977 at March 31, 2024 and September 30, 2023, respectively	142	142
Additional paid-in capital	127,658	126,963
Accumulated other comprehensive loss	(1,476)	(1,695)
Retained deficit	(45,433)	(37,045)
Total Shareholders' Equity	80,891	88,365
Total Liabilities and Shareholders’ Equity	$ 116,474	$ 137,021

XML

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2024	Sep. 30, 2023
Current Assets
Allowance for credit losses	$ 115	$ 146
Shareholders’ Equity
Preferred stock, shares authorized	100,000,000	100,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	14,208,795	14,185,977
Common stock, shares outstanding	14,208,795	14,185,977

XML

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Income Statement [Abstract]
Revenues, net	$ 25,433	$ 33,310	$ 50,353	$ 54,868
Cost of sales	16,982	19,840	32,834	33,095
Intangible asset impairment			849
Gross profit	8,451	13,470	16,670	21,773
Selling, general and administrative	8,252	11,434	16,819	20,624
Research, development and engineering	921	1,517	2,509	2,910
Gain on sale of fixed assets	(2,197)		(2,197)
Goodwill impairment			6,370
Intangible asset impairment			430
Severance expense	112		310	400
Operating income (loss)	1,363	519	(7,571)	(2,161)
Interest income	14	49	33	339
Interest expense	(193)	(155)	(391)	(157)
Foreign currency loss		(168)	(187)	(515)
Other	9	13	9	4
Income (loss) before income tax provision	1,193	258	(8,107)	(2,490)
Income tax provision (benefit)	223	(2,946)	281	(2,950)
Net income (loss)	$ 970	$ 3,204	$ (8,388)	$ 460
Income (Loss) Per Share:
Net income (loss) per basic share	$ 0.07	$ 0.23	$ (0.59)	$ 0.03
Net income (loss) per diluted share	$ 0.07	$ 0.23	$ (0.59)	$ 0.03
Weighted average shares outstanding - basic	14,197	14,028	14,193	14,018
Weighted average shares outstanding - diluted	14,209	14,157	14,193	14,142

XML

Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 970	$ 3,204	$ (8,388)	$ 460
Foreign currency translation adjustment	(50)	384	219	800
Comprehensive income (loss)	$ 920	$ 3,588	$ (8,169)	$ 1,260

XML

Condensed Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid- In Capital	Accumulated Other Comprehensive (Loss) Income	Retained Deficit
Beginning balance at Sep. 30, 2022	$ 98,368	$ 140	$ 124,458	$ (1,767)	$ (24,463)
Beginning balance (in shares) at Sep. 30, 2022		13,994,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(2,744)				(2,744)
Translation adjustment	416			416
Stock compensation expense	164		164
Stock options exercised	34		34
Stock options exercised (in shares)		9,000
Ending balance at Dec. 31, 2022	96,238	$ 140	124,656	(1,351)	(27,207)
Ending balance (in shares) at Dec. 31, 2022		14,003,000
Beginning balance at Sep. 30, 2022	98,368	$ 140	124,458	(1,767)	(24,463)
Beginning balance (in shares) at Sep. 30, 2022		13,994,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	460
Ending balance at Mar. 31, 2023	100,297	$ 140	125,127	(967)	(24,003)
Ending balance (in shares) at Mar. 31, 2023		14,039,000
Beginning balance at Dec. 31, 2022	96,238	$ 140	124,656	(1,351)	(27,207)
Beginning balance (in shares) at Dec. 31, 2022		14,003,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	3,204				3,204
Translation adjustment	384			384
Stock compensation expense	174		174
Stock options exercised	297		297
Stock options exercised (in shares)		36,000
Ending balance at Mar. 31, 2023	100,297	$ 140	125,127	(967)	(24,003)
Ending balance (in shares) at Mar. 31, 2023		14,039,000
Beginning balance at Sep. 30, 2023	$ 88,365	$ 142	126,963	(1,695)	(37,045)
Beginning balance (in shares) at Sep. 30, 2023	14,185,977	14,186,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	$ (9,358)				(9,358)
Translation adjustment	269			269
Stock compensation expense	317		317
Stock options exercised	28		28
Stock options exercised (in shares)		5,000
Ending balance at Dec. 31, 2023	79,621	$ 142	127,308	(1,426)	(46,403)
Ending balance (in shares) at Dec. 31, 2023		14,191,000
Beginning balance at Sep. 30, 2023	$ 88,365	$ 142	126,963	(1,695)	(37,045)
Beginning balance (in shares) at Sep. 30, 2023	14,185,977	14,186,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	$ (8,388)
Ending balance at Mar. 31, 2024	$ 80,891	$ 142	127,658	(1,476)	(45,433)
Ending balance (in shares) at Mar. 31, 2024	14,208,795	14,209,000
Beginning balance at Dec. 31, 2023	$ 79,621	$ 142	127,308	(1,426)	(46,403)
Beginning balance (in shares) at Dec. 31, 2023		14,191,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	970				970
Translation adjustment	(50)			(50)
Stock compensation expense	350		350
Stock options exercised (in shares)		18,000
Ending balance at Mar. 31, 2024	$ 80,891	$ 142	$ 127,658	$ (1,476)	$ (45,433)
Ending balance (in shares) at Mar. 31, 2024	14,208,795	14,209,000

XML

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating Activities
Net (loss) income	$ (8,388)	$ 460
Adjustments to reconcile net (loss) income to net cash provided by (used in) operating activities:
Depreciation and amortization	1,572	1,887
Write-down of inventory	940	517
Goodwill impairment	6,370
Intangible asset impairment	1,279
Deferred income taxes	(22)	(3,172)
Non-cash share-based compensation expense	667	338
Gain on sale of property, plant and equipment	(2,197)
Provision for allowance for credit losses		156
Changes in operating assets and liabilities:
Accounts receivable	5,244	1,113
Inventories	2,617	(4,631)
Other assets	3,163	2,215
Accounts payable	(3,462)	(1,497)
Accrued income taxes	(42)	(1,192)
Accrued and other liabilities	(3,432)	(2,289)
Contract liabilities	998	768
Net cash provided by (used in) operating activities	5,307	(5,327)
Investing Activities
Purchases of property, plant and equipment	(1,976)	(976)
Proceeds from the sale of property, plant and equipment	2,700
Acquisition, net of cash and cash equivalents acquired		(35,498)
Net provided by provided by (used in) investing activities	724	(36,474)
Financing Activities
Proceeds from the exercise of stock options	28	331
Payments on long-term debt	(6,413)	(412)
Borrowings on long-term debt		12,000
Net cash (used in) provided by financing activities	(6,385)	11,919
Effect of Exchange Rate Changes on Cash and Cash Equivalents	221	741
Net Decrease in Cash and Cash Equivalents	(133)	(29,141)
Cash and Cash Equivalents , Beginning of Period	13,133	46,874
Cash and Cash Equivalents, End of Period	13,000	17,733
Supplemental Cash Flow Information:
Income tax payments, net	323	1,529
Interest paid	$ 391	$ 94

XML

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Pay vs Performance Disclosure
Net Income (Loss)	$ 970	$ 3,204	$ (8,388)	$ 460

XML

Insider Trading Arrangements	3 Months Ended
	Mar. 31, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false
Rule 10b5-1 Arr Modified	false
Non-Rule 10b5-1 Arr Modified	false

XML

Basis of Presentation and Significant Accounting Policies

6 Months Ended

Mar. 31, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation and Significant Accounting Policies

1. Basis of Presentation and Significant Accounting Policies

Nature of Operations and Basis of Presentation – Amtech is a leading, global manufacturer of capital equipment, including thermal processing, wafer polishing and cleaning, and related consumables used in fabricating semiconductor devices, such as silicon carbide ("SiC") and silicon power devices, analog and discrete devices, electronic assemblies and light-emitting diodes ("LEDs"). We sell these products to semiconductor device and module manufacturers worldwide, particularly in Asia, North America and Europe.

We serve niche markets in industries that are experiencing technological advances, and which historically have been very cyclical. Therefore, our future profitability and growth depend on our ability to develop or acquire and market profitable new products and on our ability to adapt to cyclical trends.

The accompanying unaudited condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (the “SEC”), and consequently do not include all disclosures normally required by accounting principles generally accepted in the United States of America (“GAAP”). In the opinion of management, the accompanying unaudited interim condensed consolidated financial statements contain all adjustments necessary, all of which are of a normal and recurring nature, to present fairly our financial position, results of operations and cash flows. Certain information and note disclosures normally included in financial statements have been condensed or omitted pursuant to the rules and regulations of the SEC. The condensed consolidated balance sheet at September 30, 2023, has been derived from the audited consolidated financial statements at that date but does not include all of the information and footnotes required by GAAP for complete financial statements. These unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in our Annual Report on Form 10-K for the fiscal year ended September 30, 2023.

Our fiscal year is from October 1 to September 30. Unless otherwise stated, references to particular years, quarters, months or periods refer to our fiscal years ending or ended September 30, and the associated quarters, months, and periods of those fiscal years.

The consolidated results of operations for the three and six months ended March 31, 2024, are not necessarily indicative of the results to be expected for the full fiscal year.

Principles of Consolidation – The consolidated financial statements include the accounts of the Company and our wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.

Use of Estimates – The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates.

Accounts Receivable and Allowance for Credit Losses – Accounts receivable are recorded at the sales price of products sold to customers on trade credit terms. We establish a valuation allowance to reflect our best estimate of expected losses inherent in our accounts receivable balance. The allowance is based on our evaluation of the aging of the receivables, historical write-offs, the current economic environment and communications with the customer. We write off individual accounts against the allowance when we no longer believe that it is probable that we will collect the receivable because we become aware of a customer’s inability to meet its financial obligations.

Intangible Assets – Intangible assets acquired in business combinations are capitalized and subsequently amortized on a straight-line basis over their estimated useful life. We regularly perform reviews to determine if facts and circumstances exist which indicate that the useful lives of our intangible assets are shorter than originally estimated

or the carrying amount of these assets may not be recoverable. When indicators exist, recoverability of assets is measured by a comparison of the carrying value of the asset group to the estimated undiscounted future net cash flows expected to be generated by the asset group. If the asset group is determined not to be recoverable, the Company performs an analysis of the fair value of the individual long-lived assets and will recognize an impairment loss when the fair value is less than the carrying value of such long-lived assets. Patent costs consist primarily of legal and filing fees incurred to file patents on proprietary methods and technology we developed. Patent costs are expensed when incurred, as they are insignificant. Additional information on impairment testing of intangible assets can be found in Notes 1 and 9 of our Annual Report on Form 10-K for the year ended September 30, 2023.

In the first quarter of fiscal year 2024, we recorded an impairment of definite lived intangible assets in our Material and Substrate segment. See Note 7 for a description of the facts and circumstances leading to the intangible asset impairment.

Goodwill – Goodwill is recorded when the purchase price paid for an acquisition exceeds the estimated fair value of net identified tangible and intangible assets acquired. Goodwill is not subject to amortization but is tested for impairment annually or when it is determined that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If it is concluded that there is impairment, we would recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value (although the loss would not exceed the total amount of goodwill allocated to the reporting unit). Additional information on impairment testing of goodwill can be found in Notes 1 and 10 of our Annual Report on Form 10-K for the year ended September 30, 2023.

In the first quarter of fiscal year 2024, we recorded an impairment of goodwill in our Material and Substrate segment. See Note 7 for a description of the facts and circumstances leading to goodwill impairment.

Contract Liabilities – Contract liabilities are reflected in current liabilities on the Condensed Consolidated Balance Sheets as all performance obligations are expected to be satisfied within the next 12 months. Contract liabilities relate to payments invoiced or received in advance of completion of performance obligations under a contract. Contract liabilities are recognized as revenue upon the fulfillment of performance obligations. Contract liabilities consist of customer deposits and deferred revenue as of March 31, 2024 and September 30, 2023.

The following is a summary of activity for contract liabilities, in thousands:

	Three Months Ended March 31,						Six Months Ended March 31,
	2024			2023			2024			2023
Beginning balance	$	9,518		$	6,955		$	8,018		$	7,231
New deposits		724			3,552			3,547			4,279
Deferred revenue		(9	)		—			(6	)		—
Revenue recognized		(1,218	)		(846	)		(2,544	)		(1,414	)
Adjustment		—			—			—			(435	)
Ending balance	$	9,015		$	9,661		$	9,015		$	9,661

As of March 31, 2024, we had approximately $44.3 million of remaining performance obligations, which included recognized contract liabilities as well as amounts to be invoiced and recognized in future periods. As of September 30, 2023, we had approximately $51.8 million of remaining performance obligations. The orders included in our remaining performance obligations are expected to ship within the next twelve months.

Warranty – A limited warranty is provided free of charge, generally for periods of 12 to 36 months to all purchasers of our new products and systems. Accruals are recorded for estimated warranty costs at the time revenue is recognized. While our warranty costs have historically been within our expectations and we believe that the amounts accrued for warranty expenditures are sufficient for all systems sold through March 31, 2024, we cannot guarantee that we will continue to experience a similar level of predictability regarding warranty costs. In addition, technological changes or previously unknown defects in raw materials or components may result in more extensive and frequent warranty service than anticipated, which could result in an increase in our warranty expense. Our accrued warranty expense was $0.8 million at March 31, 2024 and $1.0 million at September 30, 2023.

The following is a summary of activity in accrued warranty expense, in thousands:

	Six Months Ended March 31,
	2024			2023
Beginning balance	$	965		$	871
Additions for warranties issued during the period		97			342
Costs incurred during the period		(19	)		9
Changes in estimate for pre-existing warranties		(280	)		(139	)
Ending balance	$	763		$	1,083

Shipping Expense – Shipping and handling fees associated with outbound freight are expensed as incurred and included in selling, general and administrative expenses. Shipping expense was $0.5 million and $0.8 million for the three months ended March 31, 2024 and 2023, respectively, and $1.1 million and $1.4 million for the six months ended March 31, 2024 and 2023, respectively.

Concentrations of Credit Risk – Our customers are primarily manufacturers of semiconductor substrates and devices and electronic assemblies. Financial instruments that potentially subject us to significant concentrations of credit risk consist principally of cash and trade accounts receivable. Credit risk is managed by performing credit evaluations of the customers’ financial condition, by requiring significant deposits where appropriate, and by actively monitoring collections. Letters of credit are required of certain customers depending on the size of the order, type of customer or its creditworthiness, and country of domicile.

As of March 31, 2024, two Semiconductor segment customers each represented 14% of accounts receivable. As of September 30, 2023, two Semiconductor segment customers each represented 17% of accounts receivable.

We maintain our cash and cash equivalents in multiple financial institutions. Balances in the United States, which account for approximately 72% and 56% of total cash balances as of March 31, 2024 and September 30, 2023, respectively, are primarily invested in financial institutions insured by the FDIC as well as a money market account. The remainder of our cash is maintained with financial institutions with reputable credit in China, the United Kingdom, Singapore, and Malaysia. We maintain cash in bank accounts in amounts which at times may exceed federally insured limits. At March 31, 2024 and September 30, 2023 Amtech’s balances exceeded insured limits by approximately $8.2 million and $6.0 million. We have not experienced any losses on such accounts.

Refer to Note 12 to Condensed Consolidated Financial Statements for information regarding major customers, foreign sales and revenue in other countries subject to fluctuation in foreign currency exchange rates.

Fair Value of Financial Instruments – We group our financial assets and liabilities measured at fair value on a recurring basis into three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. These levels are:

Level 1 – Valuation is based upon quoted market price for identical instruments traded in active markets.

Level 2 – Valuation is based on quoted market prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market.

Level 3 – Valuation is generated from model-based techniques that use significant assumptions not observable in the market. Valuation techniques include use of discounted cash flow models and similar techniques.

It is our policy to use observable inputs whenever reasonably practicable in order to minimize the use of unobservable inputs when developing fair value measurements. When available, we use quoted market prices to measure fair value. If market prices are not available, the fair value measurement is based on models that use primarily market-based parameters including interest rate yield curves, option volatilities and currency rates. In certain cases, where market rate assumptions are not available, we are required to make judgments about assumptions market participants would

use to estimate the fair value of a financial instrument. Changes in the underlying assumptions used, including discount rates and estimates of future cash flows, could significantly affect current or future valuations.

Cash and Cash Equivalents – Included in cash and cash equivalents in the Consolidated Balance Sheets are money market funds and time deposit accounts. Cash equivalents are classified as Level 1 in the fair value hierarchy.

Receivables and Payables – The recorded amounts of these financial instruments, including accounts receivable and accounts payable, approximate their fair value because of the short maturities of these instruments.

Debt – The carrying value of debt under our amended Loan Agreement is based on a floating per annum rate of interest equal to the Prime Rate, adjusted daily, plus a margin. At March 31, 2024, the carrying value of the Company's total debt was $4.2 million, which approximates fair value. The fair value for the amended Loan Agreement was estimated by discounting the future cash flows using the current rates at which similar loans would be made to borrowers with similar credit ratings and is therefore classified as Level 2 in the fair value hierarchy.

Impact of Recently Issued Accounting Pronouncements

In December 2023, the FASB issued ASU 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures” (“ASU 2023-09”), which enhances the transparency and decision usefulness of income tax disclosures. Adjustments to the annual disclosure of income taxes include: a tabular rate reconciliation comprised of eight specific categories. Incomes taxes paid, disaggregated between significant federal, state, and foreign jurisdictions. Eliminating requirements to disclose the nature and estimate of reasonably possible changes to unrecognized tax benefits in the next 12 months or that an estimated range cannot be made. Adds a requirement to disclose income (or loss) from continuing operations before income tax expense (or benefit) and income tax expense (or benefit) from continuing operations disaggregated between domestic and foreign. The ASU is effective for public business entities for fiscal years beginning on or after December 15, 2024, with early adoption permitted. The amendments in ASU 2023-09 should be applied on a prospective basis. Retrospective application is permitted. This ASU is not expected to have a material effect on our financial condition or results of operations.

In November 2023, the FASB issued ASU 2023-07, “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures” (“ASU 2023-07”), which improves reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. The ASU is effective for public business entities for fiscal years beginning after December 15, 2023, and for interim reporting periods within fiscal years beginning after December 15, 2024. Early adoption permitted. The amendments in ASU 2023-07 should be applied retrospectively to all prior periods presented in the financial statements. We are currently evaluating the impact this guidance will have on our consolidated financial statements.

There were no other new accounting pronouncements issued or effective as of March 31, 2024 that had or are expected to have a material impact on our consolidated financial statements.

XML

Long-Term Debt

6 Months Ended

Mar. 31, 2024

Debt Disclosure [Abstract]

Long-Term Debt

2. Long-Term Debt

Our finance lease liabilities and long-term debt consists of the following, in thousands:

	March 31, 2024			September 30, 2023
Revolving credit facility	$	—		$	—
Term loan		4,202			10,573
Finance leases		106			114
Total		4,308			10,687
Less: current portion of finance lease liabilities     and long-term debt		(4,243	)		(2,265	)
Finance Lease Liabilities and Long-Term Debt	$	65		$	8,422

Interest expense on finance lease liabilities and long-term debt was $0.2 million for the three months ended March 31, 2024 and 2023, and $0.4 million and $0.2 million for the six months ended March 31, 2024 and 2023, respectively.

Loan and Security Agreement

On January 17, 2023, we entered into a Loan and Security Agreement (the “Loan Agreement”) among Amtech, its U.S. based wholly owned subsidiaries Bruce Technologies, Inc., a Massachusetts corporation, BTU International, Inc., a Delaware corporation, Intersurface Dynamics, Incorporated, a Connecticut corporation, P.R. Hoffman Machine Products, Inc., an Arizona corporation, and Entrepix, Inc. (collectively the “Borrowers”), and UMB Bank, N.A., national banking association (the “Lender”). The Loan Agreement provides for (i) a term loan (the “Term Loan”) in the amount of $12.0 million maturing January 17, 2028, and (ii) a revolving loan facility (the “Revolver”) with an availability of $8.0 million maturing January 17, 2024. The recorded amount of the Term Loan has an interest rate of 6.38%. The Revolver has a floating per annum rate of interest equal to the Prime Rate, adjusted daily. Under the Loan Agreement, we are required to pay a non-utilization fee equal to 0.125% of any unused portion of the Revolver in excess of any letter of credit obligations.

The Term Loan and Revolver are secured by a first priority lien on substantially all of the Borrowers’ assets (other than certain customary excluded assets) and the Loan Agreement contains customary events of default, representations and warranties, and covenants that restrict the Borrowers’ ability to, among other things, incur additional indebtedness, other than permitted indebtedness, enter into mergers or acquisitions, sell or otherwise dispose of assets, or pay dividends, subject to customary exceptions.

The Loan Agreement additionally contains financial covenants such that, as of the end of each of their fiscal quarters, beginning March 31, 2023, the Borrowers must maintain (i) a ratio of consolidated debt owed to Lender to consolidated EBITDA (as defined in the Loan Agreement) for such fiscal quarter, of not greater than 1.50 to 1.00, through December 31, 2024, based on a building four quarters (as described in the Loan Agreement), and then 1.00 to 1.00 each fiscal quarter thereafter, (ii) a ratio of (a) the total for such fiscal quarter of EBITDAR (as defined in the Loan Agreement) minus the sum of all income taxes paid in cash plus cash dividends/distributions plus maintenance Capital Expenditures (as defined in the Loan Agreement) plus management fees paid in cash, to (b) the sum for such fiscal quarter of (1) Interest Charges (as defined in the Loan Agreement) plus (2) required payments of principal on Debt (as defined in the Loan Agreement) (including the Term Loan, but excluding the Revolver) plus (3) operating lease/rent expense, of not less than 1.30 to 1.00 based on a building four quarters (as described in the Loan Agreement), and (iii) a consolidated working capital of current assets (excluding related party receivables and prepaid expenses) minus current liabilities of at least $35.0 million.

At September 30, 2023, we were not in compliance with the Debt to EBITDA and Fixed Charge Coverage Ratio financial covenants under our Loan Agreement. On December 5, 2023, we entered into a Forbearance & Modification Agreement (the “Forbearance Agreement”) with UMB Bank related to such non-compliance, pursuant to which UMB Bank agreed to forbear from exercising its rights and remedies available to it as a result of such defaults. We will be operating under the terms of such Forbearance Agreement through January 17, 2025 (the “Forbearance Period”).

The Forbearance Agreement also amends the Loan Agreement to, among other things, (i) increase the availability under the revolving line of credit from $8.0 million to $14.0 million (the "Revolver"), and (ii) reduce the term loan commitment from $12.0 million to $4.4 million (the “Term Loan”). The Revolver maturity date was extended one year to January 17, 2025 and the Term Loan maturity date was extended one year to January 17, 2029. Both the Revolver and the Term Loan have a floating per annum rate of interest equal to the Prime Rate, adjusted daily, plus the Applicable Margin (as such terms are defined in the Loan Agreement). We are required to pay a non-utilization fee equal to 0.125% of any unused portion of the Revolver in excess of any letter of credit obligations. As of September 30, 2023, no amounts were borrowed against the Revolver and there were no letters of credit outstanding. As of the effective date of the Forbearance Agreement, $10.0 million was drawn under the Loan Agreement, which included $4.4 million under the Term Loan and $5.6 million under the Revolver. As of March 31, 2024, $4.2 million was

outstanding on the Term Loan, no amounts were borrowed against the Revolver, and there was an outstanding letter of credit in the amount of $0.3 million.

Future borrowings, if any, under the Loan Agreement are subject to, among other things, having sufficient unencumbered Eligible Accounts, Eligible Foreign Accounts and Eligible Inventory (as such terms are defined in the Loan Agreement) to meet the borrowing base requirements included in the amended Loan Agreement.

Under the amended Loan Agreement, the Company is required to comply with the following financial covenants:

•Maintaining, on a consolidated basis, a minimum EBITDA (as defined in the Loan Agreement) through the fiscal year ending September 30, 2024, measured on a quarterly basis (the “Minimum EBITDA Covenant”). The Minimum EBITDA Covenant amount increases each quarter during such period. At March 31, 2024, we were in compliance with the Minimum EBITDA Covenant for such period (not less than negative EBITDA of $800,000 for the six-month period ended March 31, 2024), with actual positive EBITDA of $1.0 million for such period. The Minimum EBITDA Covenant replaced the Senior Debt to EBITDA covenant set forth in the original Loan Agreement.

•As of the end of each of the Company’s fiscal years, commencing for the fiscal year ending September 30, 2024, the Company must maintain a ratio of (a) the total for such fiscal year of EBITDAR (as defined in the Loan Agreement) minus the sum of all income taxes paid in cash plus cash dividends/distributions plus maintenance Capital Expenditures (as defined in the Loan Agreement) plus management fees paid in cash, to (b) the sum for such fiscal quarter of (1) Interest Charges (as defined in the Loan Agreement) plus (2) required payments of principal on Debt (as defined in the Loan Agreement) (including the Term Loan, but excluding the Revolver) plus (3) operating lease/rent expense, of not less than 1.30 to 1.00 based on a trailing four (4) quarter basis (the “Fixed Charge Coverage Ratio Covenant”). Prior to entering into the Forbearance Agreement, this covenant was measured as of the end of each of the Company’s fiscal quarters, beginning March 31, 2023.

•As of the end of each of the Company’s fiscal quarters, commencing March 31, 2023, the Company must maintain a consolidated working capital of current assets (excluding related party receivables and prepaid expenses) minus current liabilities of at least $35.0 million. This financial covenant is unchanged in the Forbearance Agreement.

If the Lender does not extend the Forbearance Period or otherwise grant a waiver in the future for the covenant defaults described above, an event of default under the Loan Agreement would exist. To the extent the Lender so elects, the outstanding indebtedness under the Loan Agreement could be accelerated following the expiration of any applicable cure periods, causing such debt to be immediately due and payable. In addition, should the Company default in its obligation to comply with any of the covenants described immediately above during the Forbearance Period, an event of default would then exist, and, absent a further forbearance agreement or waiver granted by the Lender, the Lender would have the right to accelerate the indebtedness following the expiration of any applicable cure periods, causing such debt to be immediately due and payable. Both of the foregoing events would also result in the termination of all commitments to extend further credit under the Loan Agreement. There is no guarantee we will have sufficient liquidity to repay our outstanding debt under the Loan Agreement in full if such debt were accelerated. As of March 31, 2024, we had $13.0 million in cash and cash equivalents, and $4.2 million in debt under the Loan Agreement. If we are unable to pay such debt as it comes due, or obtain waivers for such payments, our Lender could foreclose on the assets securing such debt. These events could materially adversely affect our business, results of operations and financial condition. As of March 31, 2024, all outstanding debt under the Loan Agreement was classified as current as a result of the Lender’s ability, in its sole discretion, to call the amounts due thereunder at the end of the Forbearance Period.

Finance Lease Obligations

Our finance lease obligations totaled $0.1 million as of March 31, 2024 and September 30, 2023.

The current and long-term portions of our finance leases are included in the current and long-term portions of finance lease liabilities and long-term debt in the table above and in our Condensed Consolidated Balance Sheets as of March 31, 2024 and September 30, 2023. Further, see Note 6 for additional information.

XML

Acquisition

6 Months Ended

Mar. 31, 2024

Business Combinations [Abstract]

Acquisition

3. Acquisition

Entrepix Merger

On January 17, 2023 (the “Closing Date”), the Company acquired 100% of the issued and outstanding shares of capital stock of Entrepix, Inc., an Arizona corporation (“Entrepix”), which primarily manufactures chemical mechanical polishing (“CMP”) technology, through a reverse triangular merger. Entrepix’s CMP technology portfolio and wafer cleaning equipment will complement our existing substrate polishing and wet process chemical offerings. Pursuant to the terms and conditions of the Agreement and Plan of Merger dated January 17, 2023 (the “Merger Agreement”), Emerald Merger Sub, Inc., a wholly-owned subsidiary of the Company (“Merger Sub”), merged with and into Entrepix (the “Merger”), resulting in Entrepix surviving the Merger and becoming a wholly-owned subsidiary of the Company (the “Acquisition” or “Transaction”).

On the Closing Date, in connection with the Merger Agreement and in contemplation of the Transaction, the Company entered into a Loan and Security Agreement with UMB Bank, N.A., under which the Lender provided the Company with (i) a $12.0 million term loan maturing January 17, 2028, and (ii) an $8.0 million revolving loan facility maturing January 17, 2024 (see Note 2). The proceeds of the Term Loan were used to partially fund the Transaction.

The Acquisition is accounted for using the acquisition method of accounting for business combinations under FASB Accounting Standard Codification Topic No. 805, Business Combinations (“ASC 805”), with Amtech representing the accounting acquirer under this guidance.

Summary of Consideration Transferred

The total consideration for the Acquisition was $39.2 million, consisting of $35.2 million cash consideration to the sellers and $4.0 million cash paid for debt and Entrepix transaction costs.

Goodwill is calculated as the excess of the consideration transferred over the net assets recognized and represents the estimated future economic benefits arising from other assets acquired that could not be individually identified and separately recognized. Such assets include synergies the Company expects to achieve, such as deeper penetration into an overlapping customer base, complementary product offerings, and cost redundancy reductions. In accordance with the measurement principles in FASB Accounting Standard Codification Topic No. 820, Fair Value Measurement, the purchase consideration for the Acquisition has been allocated under the acquisition method of accounting to the estimated fair market value of the net assets acquired, including a residual amount of goodwill, none of which is deductible for tax purposes. Amtech’s acquisition costs incurred were $2.5 million as of the year ended September 30, 2023, and were recorded as “Selling, general and administrative expenses” in the accompanying Condensed

Consolidated Statements of Operations. The following table summarizes the fair values assigned to identifiable assets acquired and liabilities assumed, in thousands:

	September 30, 2023
Fair value of total cash consideration transferred	$	39,227
Estimated fair value of identifiable assets acquired and liabilities assumed:
Cash and cash equivalents	$	4,289
Accounts receivable, net		5,884
Inventories		5,683
Other current assets		179
Property, plant, and equipment		2,040
Right-of-use assets		2,246
Intangible assets		13,600
Goodwill		16,463
Other assets		80
Total assets acquired		50,464
Accounts payable		1,574
Other accrued liabilities		1,994
Contract liabilities		1,949
Income taxes payable		985
Current portion of long-term operating lease liabilities		515
Long-term operating lease liabilities		1,730
Deferred tax liability		2,490
Total liabilities assumed		11,237
Net assets acquired	$	39,227

The establishment of the allocation to goodwill requires the extensive use of accounting estimates and management judgment. In accordance with ASC 805, the Company has up to one year from the acquisition date (referred to as the measurement period) to account for changes in the fair values of the identifiable assets acquired and the liabilities assumed in the acquired entity. As of January 17, 2024 the measurement period is closed.

The fair value associated with acquired intangible assets and their associated weighted-average amortization periods consist of the following, in thousands:

	Classification of Amortization	Amount		Weighted-Average Amortization Period
Developed technology	Cost of sales	$	6,700	5.0 years
Customer relationships	Selling, general and administrative		2,800	10.0 years
Backlog	Selling, general and administrative		2,100	1.0 year
Trade names	Selling, general and administrative		1,800	10.0 years
Noncompetition agreements	Selling, general and administrative		200	5.0 years
Total intangible assets		$	13,600	6.1 years

Unaudited Pro Forma Financial Information

The following unaudited pro forma financial information presents the combined results of operations of Amtech and Entrepix, in thousands, as if the acquisition occurred on October 1, 2021. The unaudited pro forma financial information is presented for informational purposes only and is not indicative of the results of operations that would have been achieved if the acquisition had taken place on the date indicated or of results that may occur in the future.

	Three Months Ended March 31,		Six Months Ended March 31,
	2023		2023
Revenues, Net	$	34,623	$	63,778
Net Income	$	4,285	$	1,149

The unaudited pro forma financial information presented above include the following adjustments:

3 Months Ended March 31, 2023

•reversal of amortization expense on intangible assets acquired of $0.5 million for the three months ended March 31, 2023;

•incremental interest expense on the Term Loan of $0.2 million for the three months ended March 31, 2023; and

•non-recurring adjustments directly attributable to the business combination.

6 Months Ended March 31, 2023

•incremental amortization expense on intangible assets acquired of $0.9 million for the six months ended March 31, 2023;

•incremental interest expense on the Term Loan of $0.3 million for the six months ended March 31, 2023; and

•non-recurring adjustments directly attributable to the business combination.

The unaudited pro forma financial information includes adjustments to align accounting policies, which were materially similar to the Company’s accounting policies. Any differences in accounting policies were adjusted to reflect the accounting policies of the Company in the unaudited pro forma financial information presented.

XML

Earnings Per Share

6 Months Ended

Mar. 31, 2024

Earnings Per Share [Abstract]

Earnings Per Share

4. Earnings Per Share

Basic earnings per share (“EPS”) is computed by dividing net income by the weighted average number of common shares outstanding for the period. Diluted EPS is computed similarly to basic EPS except that the denominator is increased to include the number of additional common shares that would have been outstanding if potentially dilutive common shares had been issued. Dilutive potential common shares include outstanding restricted stock units (“RSUs”) and stock options. In the case of a net loss, diluted earnings per share is calculated in the same manner as basic EPS.

For the three and six months ended March 31, 2024, options for 817,191 and 645,244 weighted average shares, respectively, were excluded from the diluted EPS calculations because they were anti-dilutive. For the three and six months ended March 31, 2023, options for 327,000 and 293,000 weighted average shares, respectively, were excluded from the diluted EPS calculations because they were anti-dilutive. These shares could become dilutive in the future.

A reconciliation of the components of the basic and diluted EPS calculations follows, in thousands, except per share amounts:

	Three Months Ended March 31,				Six Months Ended March 31,
	2024		2023		2024			2023
Numerator:
Net income (loss)	$	970	$	3,204	$	(8,388	)	$	460
Denominator:
Weighted-average shares used to compute basic EPS		14,197		14,028		14,193			14,018
Dilutive potential common shares due to stock     options (1)		—		128		—			124
Dilutive potential common shares due to RSUs (1)		12		1		—			—
Weighted-average shares used to compute diluted EPS		14,209		14,157		14,193			14,142
Income (loss) per share:
Net income (loss) per basic share	$	0.07	$	0.23	$	(0.59	)	$	0.03
Net income (loss) per diluted share	$	0.07	$	0.23	$	(0.59	)	$	0.03

(1)The number of common stock equivalents is calculated using the treasury method and the average market price during the period.

XML

Inventories

6 Months Ended

Mar. 31, 2024

Inventory Disclosure [Abstract]

Inventories

5. Inventories

The components of inventories are as follows, in thousands:

	March 31, 2024		September 30, 2023
Purchased parts and raw materials	$	21,558	$	22,627
Work-in-process		7,058		7,774
Finished goods		2,692		4,444
	$	31,308	$	34,845

XML

Leases

6 Months Ended

Mar. 31, 2024

Leases [Abstract]

Leases

6. Leases

The following table provides information about the financial statement classification of our lease balances reported within the Condensed Consolidated Balance Sheets, in thousands:

	March 31, 2024		September 30, 2023
Assets
Right-of-use assets - operating	$	9,784	$	11,217
Right-of-use assets - finance		106		123
Total right-of-use assets	$	9,890	$	11,340
Liabilities
Current
Operating lease liabilities	$	1,934	$	2,623
Finance lease liabilities		41		64
Total current portion of long-term lease liabilities		1,975		2,687
Long-term
Operating lease liabilities		8,195		8,894
Finance lease liabilities		65		50
Total long-term lease liabilities		8,260		8,944
Total lease liabilities	$	10,235	$	11,631

The following table provides information about the financial statement classification of our lease expenses reported in the Condensed Consolidated Statements of Operations, in thousands:

		Three Months Ended March 31,				Six Months Ended March 31,
Lease cost	Classification	2024		2023		2024		2023
Operating lease cost	Cost of sales	$	373	$	688	$	1,118	$	1,149
Operating lease cost	Selling, general and administrative		464		202		668		379
Operating lease cost	Research, development and engineering		3		4		6		7
Finance lease cost	Cost of sales		1		1		2		2
Finance lease cost	Selling, general and administrative		22		18		42		36
Short-term lease cost	Cost of sales		—		9		—		17
Total lease cost		$	863	$	922	$	1,836	$	1,590

Future minimum lease payments under non-cancelable leases as of March 31, 2024 are as follows, in thousands:

	Operating Leases		Finance Leases		Total
Remainder of 2024	$	1,416	$	31	$	1,447
2025		2,059		29		2,088
2026		1,725		29		1,754
2027		1,106		21		1,127
2028		1,115		5		1,120
Thereafter		5,144		—		5,144
Total lease payments		12,565		115		12,680
Less: Interest		2,436		9		2,445
Present value of lease liabilities	$	10,129	$	106	$	10,235

Operating lease payments include $2.3 million related to options to extend lease terms that are reasonably certain of being exercised.

The following table provides information about the remaining lease terms and discount rates applied:

	March 31, 2024			September 30, 2023
Weighted average remaining lease term
Operating leases	7.72 years			7.31 years
Finance leases	4.88 years			2.54 years
Weighted average discount rate
Operating leases		5.60	%		5.50	%
Finance leases		5.52	%		4.91	%

During the fourth quarter of fiscal 2023 and the second quarter of fiscal 2024, we entered into leases that have not yet commenced. We expect to record $8.6 million of ROU asset and lease liability upon the commencement of these leases in the third quarter of fiscal 2024.

XML

Goodwill and Intangible Assets

6 Months Ended

Mar. 31, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

7. Goodwill and Intangible Assets

The Company accounts for goodwill at acquisition-date fair value and other finite intangibles at acquisition-date fair value less accumulated amortization. See Note 1 for a summary of the Company’s policies relating to goodwill and intangible assets.

Intangible Assets

The Company’s intangible assets, net consists of the following, in thousands:

		March 31,			September 30,
	Amortization Period	2024			2023
Backlog	1 year	$	2,100		$	2,100
Customer relationships	6-10 years		4,409			4,409
Developed technology	5 years		6,700			6,700
Noncompetition agreements	5 years		200			200
Trade names	3-15 years		2,679			2,679
			16,088			16,088
Accumulated amortization			(5,268	)		(4,785	)
Less asset impairments:
Backlog			(425	)		(425	)
Customer relationships			(339	)		(119	)
Developed technology			(5,494	)		(4,645	)
Noncompetition agreements			(160	)		—
Trade names			(50	)		—
Intangible assets, net		$	4,352		$	6,114

The estimated aggregate amortization expense for each of the five succeeding fiscal years as of March 31, 2024 is as follows, thousands:

Year ending September 30:	Amount
2024	$	348
2025		511
2026		511
2027		511
2028		511
Thereafter		1,960
Total	$	4,352

The aggregate amortization expense during the three months ended March 31, 2024 and 2023 was $0.2 million and $1.0 million, respectively. The aggregate amortization expense during the six months ended March 31, 2024 and 2023 were $0.5 million and $1.0 million, respectively.

During each fiscal year, we periodically assess whether any indicators of impairment existed related to our intangible assets. At the end of December 2023, we identified a triggering event. As a result of the decline in our stock price as of December 31, 2023, our book value materially exceeded our market value. This triggering event indicated we should test the related long-lived assets for impairment in our Material and Substrate segment. We tested each identified asset group within our Material and Substrate segment by first performing a recoverability test, comparing projected undiscounted cash flows from the use and eventual disposition of each asset group to its carrying value. This test indicated that the undiscounted cash flows were not sufficient to recover the carrying value of certain asset groups. We then compared the carrying value of the individual long-lived assets within those asset groups against their fair value in order to determine if impairment existed. Determining the fair value of those asset groups involves the use of significant estimates and assumptions, including projections of revenues and expenses and related cash flows based on assumed long-term growth rates and demand trends, and estimated discount rates based on the asset group's weighted average return on assets, as derived from various methods. The fair value of the intangible assets were estimated using various valuation methodologies, including the multi-period excess earnings method, the relief from royalty method and the distributor method. These fair value measurements fall under Level 3 of the fair value hierarchy. As a result, we recorded a total impairment charge for intangible assets in our Materials and Substrate

segment of $1.3 million during the quarter ended December 31, 2023. This impairment charge relates to developed technology, trade name, customer relationships and non-competition agreements at Entrepix.

Goodwill

The Company evaluates goodwill at the reporting unit level, which, for the Company, is at the level of the reportable segments, semiconductor and material and substrate. The changes in carrying amount of goodwill allocated to each of the reporting units for the six months ended March 31, 2024 is as follows, in thousands:

	Semiconductor		Material and Substrate			Total Goodwill
Goodwill	$	5,905	$	21,726		$	27,631
Accumulated impairment losses		—		—			—
Balance at September 30, 2023		5,905		21,726			27,631
Goodwill acquired		—		—			—
Impairment of goodwill		—		(6,370	)		(6,370	)
Balance at March 31, 2024	$	5,905	$	15,356		$	21,261
Goodwill	$	5,905	$	21,726		$	27,631
Accumulated impairment losses		—		(6,370	)		(6,370	)
Balance at March 31, 2024	$	5,905	$	15,356		$	21,261

During each fiscal year, we periodically assess whether any indicators of impairment exist which would require us to perform an interim impairment review. At the end of December 2023, we identified a triggering event. As a result of the decline in our stock price as of December 31, 2023, our book value materially exceeded our market value. This triggering event indicated we should test goodwill for impairment. The results of the goodwill impairment test indicated that the book value of our Material and Substrate reporting unit was in excess of the fair value, and, thus, was impaired. There was no impairment of goodwill identified for our Semiconductor reporting unit. As of the three months ended March 31, 2024, there was no new impairment of goodwill for either the Material and Substrate reporting unit or the Semiconductor reporting unit.

Determining the fair value of a reporting unit involves the use of significant estimates and assumptions. Our goodwill impairment test uses a weighting of the income approach and the market approach to estimate a reporting unit’s fair value. The income approach is based on a discounted future cash flow analysis that uses certain assumptions including: projections of revenues and expenses and related cash flows based on assumed long-term growth rates and demand trends; expected future investments and working capital requirements to sustain and grow the business; and estimated discount rates based on the reporting unit’s weighted average cost of capital as derived by the Capital Asset Pricing Model and other methods, which includes observable market inputs and other data from identified comparable companies. The same estimates are also used internally for our capital budgeting process, and for long-term and short-term business planning and forecasting. We test the reasonableness of the inputs and outcomes of our discounted cash flow analysis against available comparable market data, and we also perform a reconciliation of our total market capitalization to the estimated fair value of all of our reporting units. The market approach is based on the application of appropriate market-derived multiples selected from (i) comparable publicly-traded companies and/or (ii) the implied transaction multiples derived from identified merger and acquisition activity in the market. Multiples are then selected based on a comparison of the reviewed data to that of the reporting unit and applied to relevant historical and forecasted financial parameters such as levels of revenues, EBITDA, EBIT or other metrics. The calculation of fair value falls under Level 3 of the fair value hierarchy.

If the future performance of these reporting units fall short of our expectations, if there are significant changes in operations due to changes in market conditions or if our stock price continues to decline, we could be required to recognize additional material impairment charges in future periods.

XML

Income Taxes

6 Months Ended

Mar. 31, 2024

Income Tax Disclosure [Abstract]

Income Taxes

8. Income Taxes

Our effective tax rate was (3.5%) and 118.0% for the six months ended March 31, 2024 and 2023, respectively. The effective tax rate for the six months ended March 31, 2024 differs from the U.S. statutory tax rate of 21% primarily due to losses for which no tax benefit can be recognized. The effective tax rate for the six months ended March 31, 2023 differs from the U.S. statutory tax rate of 21% primarily due to the release of a portion of our valuation allowance in connection with a deferred tax liability related to the Entrepix acquisition resulting in recognition of previously recorded deferred tax assets. For the three months ended March 31, 2024 and 2023, we recorded income tax expense of $0.2 million and an income tax benefit of $2.9 million, respectively. For the six months ended March 31, 2024 and 2023, we recorded an income tax expense of $0.3 million and income tax benefit of $3.0 million, respectively. The quarterly income tax provision is calculated using an estimated annual effective tax rate, based upon expected annual income, permanent items, statutory rates and planned tax strategies in the various jurisdictions in which we operate. However, losses in certain jurisdictions and discrete items are excluded from the determination of the estimated annual effective tax rate.

XML

Equity and Stock-Based Compensation

6 Months Ended

Mar. 31, 2024

Share-Based Payment Arrangement [Abstract]

Equity and Stock-Based Compensation

9. Equity and Stock-Based Compensation

Stock-based compensation expense was $0.3 million and $0.2 million in the three months ended March 31, 2024 and 2023, respectively, and $0.7 million and $0.3 million in the six months ended March 31, 2024 and 2023, respectively. Stock-based compensation expense is included in selling, general and administrative expenses.

The following table summarizes our stock option activity during the six months ended March 31, 2024:

	Options			Weighted Average Exercise Price
Outstanding at beginning of period		672,924		$	8.76
Granted		557,500			5.66
Exercised		(5,000	)		5.67
Forfeited		(43,991	)		9.63
Outstanding at end of period		1,181,433		$	7.28
Exercisable at end of period		424,643		$	8.49
Weighted average fair value of options granted during the period	$	2.44

The fair value of options was estimated at the applicable grant date using the Black-Scholes option pricing model with the following assumptions:

	Six Months Ended March 31,
	2024			2023
Risk free interest rate		4	%		4	%
Expected term	5 years			5 years
Dividend rate		—	%		—	%
Volatility		60	%		56	%

The following table summarizes our RSU activity during the six months ended March 31, 2024:

	Number			Weighted Average Grant Date Fair Value
Nonvested at beginning of year		75,977		$	9.15
Granted		24,897			4.82
Released		(20,421	)		9.55
Forfeited		—			—
Nonvested at end of period		80,453		$	7.71

2023 Stock Repurchase Plan

On February 7, 2023, our Board of Directors (the “Board”) approved a stock repurchase program, pursuant to which we may repurchase up to $5 million of our outstanding Common Stock over a one-year period, commencing on February 10, 2023. Repurchases under the program will be made in open market transactions at prevailing market prices, in privately negotiated transactions, or by other means in compliance with the rules and regulations of the Securities and Exchange Commission; however, we have no obligation to repurchase shares and the timing, actual number, and value of shares to be repurchased is subject to management’s discretion and will depend on our stock price and other market conditions. We may, in the sole discretion of the Board, terminate the repurchase program at any time while it is in effect. Repurchased shares may be retired or kept in treasury for further issuance. There were no repurchases during the quarter ended March 31, 2024. The term of this plan expired during the quarter ended March 31, 2024.

XML

Commitments and Contingencies

6 Months Ended

Mar. 31, 2024

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

10. Commitments and Contingencies

Purchase Obligations – As of March 31, 2024, we had unrecorded purchase obligations in the amount of $16.3 million. These purchase obligations consist of outstanding purchase orders for goods and services. While the amount represents purchase agreements, the actual amounts to be paid may be less in the event that any agreements are renegotiated, canceled or terminated.

Legal Proceedings and Other Claims – From time to time, we are a party to claims and actions for matters arising out of our business operations. We regularly evaluate the status of the legal proceedings and other claims in which we are involved to assess whether a loss is probable or there is a reasonable possibility that a loss, or an additional loss, may have been incurred and determine if accruals are appropriate. If accruals are not appropriate, we further evaluate each legal proceeding to assess whether an estimate of possible loss or range of possible loss can be made for disclosure. Although the outcome of claims and litigation is inherently unpredictable, we believe that we have adequate provisions for any probable and estimable losses. It is possible, nevertheless, that our consolidated financial position, results of operations or liquidity could be materially and adversely affected in any period by the resolution of a claim or legal proceeding. Legal expenses related to defense, negotiations, settlements, rulings and advice of outside legal counsel are expensed as incurred.

Employment Contracts – We have employment contracts and change in control agreements with, and severance plans covering, certain officers and management employees under which severance payments would become payable in the event of specified terminations without cause or terminations under certain circumstances after a change in control. If severance payments under the current employment contracts or severance plans were to become payable, the severance payments would generally range from six to twelve months of salary.

XML

Reportable Segments

6 Months Ended

Mar. 31, 2024

Segment Reporting [Abstract]

Reportable Segments

11. Reportable Segments

Amtech has two operating segments that are structured around the types of product offerings provided to our customers. In addition, the operating segments may be further distinguished by the Company’s respective brands. These two operating segments comprise our two reportable segments discussed below. Our two reportable segments are as follows:

Semiconductor – We design, manufacture, sell and service thermal processing equipment and related controls for use by leading semiconductor manufacturers, and in electronics, automotive and other industries.

Material and Substrate – We produce consumables and machinery for lapping (fine abrading), polishing and cleaning of materials, such as sapphire substrates, optical components, silicon wafers, numerous types of crystal materials, ceramics and metal components.

Information concerning our reportable segments is as follows, in thousands:

	Three Months Ended March 31,						Six Months Ended March 31,
	2024			2023			2024			2023
Net Revenues:
Semiconductor	$	17,441		$	22,047		$	34,968		$	38,934
Material and Substrate		7,992			11,263			15,385			15,934
	$	25,433		$	33,310		$	50,353		$	54,868
Operating income (loss):
Semiconductor	$	896		$	2,950		$	1,977		$	3,819
Material and Substrate		900			297			(6,943	)		930
Non-segment related		(433	)		(2,728	)		(2,605	)		(6,910	)
	$	1,363		$	519		$	(7,571	)	$	(2,161	)

	March 31, 2024		September 30, 2023
Identifiable Assets:
Semiconductor	$	63,986	$	72,466
Material and Substrate		50,579		61,576
Non-segment related*		1,909		2,979
	$	116,474	$	137,021

* Non-segment related assets include cash, property, and other assets.

XML

Major Customers and Foreign Sales

6 Months Ended

Mar. 31, 2024

Geographic Areas, Revenues from External Customers [Abstract]

Major Customers and Foreign Sales

12. Major Customers and Foreign Sales

During the six months ended March 31, 2024, one Semiconductor segment customer represented 12% of our net revenues. During the six months ended March 31, 2023, two Semiconductor segment customers individually represented 12% and 11% of our net revenues.

Our net revenues were from customers in the following geographic regions:

	Six Months Ended March 31,
	2024			2023
United States		43	%		33	%
Canada		1	%		8	%
Mexico		1	%		3	%
Other		—	%		2	%
Total Americas		45	%		46	%
China		23	%		13	%
Malaysia		8	%		9	%
Taiwan		4	%		5	%
Other		4	%		9	%
Total Asia		39	%		36	%
Germany		8	%		2	%
Austria		1	%		6	%
Czech Republic		3	%		3	%
Other		4	%		7	%
Total Europe		16	%		18	%
		100	%		100	%

XML

Basis of Presentation and Significant Accounting Policies (Policies)

6 Months Ended

Mar. 31, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Nature of Operations and Basis of Presentation

Nature of Operations and Basis of Presentation – Amtech is a leading, global manufacturer of capital equipment, including thermal processing, wafer polishing and cleaning, and related consumables used in fabricating semiconductor devices, such as silicon carbide ("SiC") and silicon power devices, analog and discrete devices, electronic assemblies and light-emitting diodes ("LEDs"). We sell these products to semiconductor device and module manufacturers worldwide, particularly in Asia, North America and Europe.

We serve niche markets in industries that are experiencing technological advances, and which historically have been very cyclical. Therefore, our future profitability and growth depend on our ability to develop or acquire and market profitable new products and on our ability to adapt to cyclical trends.

The accompanying unaudited condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (the “SEC”), and consequently do not include all disclosures normally required by accounting principles generally accepted in the United States of America (“GAAP”). In the opinion of management, the accompanying unaudited interim condensed consolidated financial statements contain all adjustments necessary, all of which are of a normal and recurring nature, to present fairly our financial position, results of operations and cash flows. Certain information and note disclosures normally included in financial statements have been condensed or omitted pursuant to the rules and regulations of the SEC. The condensed consolidated balance sheet at September 30, 2023, has been derived from the audited consolidated financial statements at that date but does not include all of the information and footnotes required by GAAP for complete financial statements. These unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in our Annual Report on Form 10-K for the fiscal year ended September 30, 2023.

Our fiscal year is from October 1 to September 30. Unless otherwise stated, references to particular years, quarters, months or periods refer to our fiscal years ending or ended September 30, and the associated quarters, months, and periods of those fiscal years.

The consolidated results of operations for the three and six months ended March 31, 2024, are not necessarily indicative of the results to be expected for the full fiscal year.

Principles of Consolidation

Principles of Consolidation – The consolidated financial statements include the accounts of the Company and our wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.

Use of Estimates

Use of Estimates – The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates.

Accounts Receivable and Allowance for Credit Losses

Accounts Receivable and Allowance for Credit Losses – Accounts receivable are recorded at the sales price of products sold to customers on trade credit terms. We establish a valuation allowance to reflect our best estimate of expected losses inherent in our accounts receivable balance. The allowance is based on our evaluation of the aging of the receivables, historical write-offs, the current economic environment and communications with the customer. We write off individual accounts against the allowance when we no longer believe that it is probable that we will collect the receivable because we become aware of a customer’s inability to meet its financial obligations.

Intangible Assets

Intangible Assets – Intangible assets acquired in business combinations are capitalized and subsequently amortized on a straight-line basis over their estimated useful life. We regularly perform reviews to determine if facts and circumstances exist which indicate that the useful lives of our intangible assets are shorter than originally estimated

or the carrying amount of these assets may not be recoverable. When indicators exist, recoverability of assets is measured by a comparison of the carrying value of the asset group to the estimated undiscounted future net cash flows expected to be generated by the asset group. If the asset group is determined not to be recoverable, the Company performs an analysis of the fair value of the individual long-lived assets and will recognize an impairment loss when the fair value is less than the carrying value of such long-lived assets. Patent costs consist primarily of legal and filing fees incurred to file patents on proprietary methods and technology we developed. Patent costs are expensed when incurred, as they are insignificant. Additional information on impairment testing of intangible assets can be found in Notes 1 and 9 of our Annual Report on Form 10-K for the year ended September 30, 2023.

In the first quarter of fiscal year 2024, we recorded an impairment of definite lived intangible assets in our Material and Substrate segment. See Note 7 for a description of the facts and circumstances leading to the intangible asset impairment.

Goodwill

Goodwill – Goodwill is recorded when the purchase price paid for an acquisition exceeds the estimated fair value of net identified tangible and intangible assets acquired. Goodwill is not subject to amortization but is tested for impairment annually or when it is determined that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If it is concluded that there is impairment, we would recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value (although the loss would not exceed the total amount of goodwill allocated to the reporting unit). Additional information on impairment testing of goodwill can be found in Notes 1 and 10 of our Annual Report on Form 10-K for the year ended September 30, 2023.

In the first quarter of fiscal year 2024, we recorded an impairment of goodwill in our Material and Substrate segment. See Note 7 for a description of the facts and circumstances leading to goodwill impairment.

Contract Liabilities

Contract Liabilities – Contract liabilities are reflected in current liabilities on the Condensed Consolidated Balance Sheets as all performance obligations are expected to be satisfied within the next 12 months. Contract liabilities relate to payments invoiced or received in advance of completion of performance obligations under a contract. Contract liabilities are recognized as revenue upon the fulfillment of performance obligations. Contract liabilities consist of customer deposits and deferred revenue as of March 31, 2024 and September 30, 2023.

The following is a summary of activity for contract liabilities, in thousands:

	Three Months Ended March 31,						Six Months Ended March 31,
	2024			2023			2024			2023
Beginning balance	$	9,518		$	6,955		$	8,018		$	7,231
New deposits		724			3,552			3,547			4,279
Deferred revenue		(9	)		—			(6	)		—
Revenue recognized		(1,218	)		(846	)		(2,544	)		(1,414	)
Adjustment		—			—			—			(435	)
Ending balance	$	9,015		$	9,661		$	9,015		$	9,661

As of March 31, 2024, we had approximately $44.3 million of remaining performance obligations, which included recognized contract liabilities as well as amounts to be invoiced and recognized in future periods. As of September 30, 2023, we had approximately $51.8 million of remaining performance obligations. The orders included in our remaining performance obligations are expected to ship within the next twelve months.

Warranty

Warranty – A limited warranty is provided free of charge, generally for periods of 12 to 36 months to all purchasers of our new products and systems. Accruals are recorded for estimated warranty costs at the time revenue is recognized. While our warranty costs have historically been within our expectations and we believe that the amounts accrued for warranty expenditures are sufficient for all systems sold through March 31, 2024, we cannot guarantee that we will continue to experience a similar level of predictability regarding warranty costs. In addition, technological changes or previously unknown defects in raw materials or components may result in more extensive and frequent warranty service than anticipated, which could result in an increase in our warranty expense. Our accrued warranty expense was $0.8 million at March 31, 2024 and $1.0 million at September 30, 2023.

The following is a summary of activity in accrued warranty expense, in thousands:

	Six Months Ended March 31,
	2024			2023
Beginning balance	$	965		$	871
Additions for warranties issued during the period		97			342
Costs incurred during the period		(19	)		9
Changes in estimate for pre-existing warranties		(280	)		(139	)
Ending balance	$	763		$	1,083

Shipping Expense

Shipping Expense – Shipping and handling fees associated with outbound freight are expensed as incurred and included in selling, general and administrative expenses. Shipping expense was $0.5 million and $0.8 million for the three months ended March 31, 2024 and 2023, respectively, and $1.1 million and $1.4 million for the six months ended March 31, 2024 and 2023, respectively.

Concentrations of Credit Risk

Concentrations of Credit Risk – Our customers are primarily manufacturers of semiconductor substrates and devices and electronic assemblies. Financial instruments that potentially subject us to significant concentrations of credit risk consist principally of cash and trade accounts receivable. Credit risk is managed by performing credit evaluations of the customers’ financial condition, by requiring significant deposits where appropriate, and by actively monitoring collections. Letters of credit are required of certain customers depending on the size of the order, type of customer or its creditworthiness, and country of domicile.

As of March 31, 2024, two Semiconductor segment customers each represented 14% of accounts receivable. As of September 30, 2023, two Semiconductor segment customers each represented 17% of accounts receivable.

We maintain our cash and cash equivalents in multiple financial institutions. Balances in the United States, which account for approximately 72% and 56% of total cash balances as of March 31, 2024 and September 30, 2023, respectively, are primarily invested in financial institutions insured by the FDIC as well as a money market account. The remainder of our cash is maintained with financial institutions with reputable credit in China, the United Kingdom, Singapore, and Malaysia. We maintain cash in bank accounts in amounts which at times may exceed federally insured limits. At March 31, 2024 and September 30, 2023 Amtech’s balances exceeded insured limits by approximately $8.2 million and $6.0 million. We have not experienced any losses on such accounts.

Refer to Note 12 to Condensed Consolidated Financial Statements for information regarding major customers, foreign sales and revenue in other countries subject to fluctuation in foreign currency exchange rates.

Fair Value of Financial Instruments

Fair Value of Financial Instruments – We group our financial assets and liabilities measured at fair value on a recurring basis into three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. These levels are:

Level 1 – Valuation is based upon quoted market price for identical instruments traded in active markets.

Level 2 – Valuation is based on quoted market prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market.

Level 3 – Valuation is generated from model-based techniques that use significant assumptions not observable in the market. Valuation techniques include use of discounted cash flow models and similar techniques.

It is our policy to use observable inputs whenever reasonably practicable in order to minimize the use of unobservable inputs when developing fair value measurements. When available, we use quoted market prices to measure fair value. If market prices are not available, the fair value measurement is based on models that use primarily market-based parameters including interest rate yield curves, option volatilities and currency rates. In certain cases, where market rate assumptions are not available, we are required to make judgments about assumptions market participants would

use to estimate the fair value of a financial instrument. Changes in the underlying assumptions used, including discount rates and estimates of future cash flows, could significantly affect current or future valuations.

Cash and Cash Equivalents – Included in cash and cash equivalents in the Consolidated Balance Sheets are money market funds and time deposit accounts. Cash equivalents are classified as Level 1 in the fair value hierarchy.

Receivables and Payables – The recorded amounts of these financial instruments, including accounts receivable and accounts payable, approximate their fair value because of the short maturities of these instruments.

Debt – The carrying value of debt under our amended Loan Agreement is based on a floating per annum rate of interest equal to the Prime Rate, adjusted daily, plus a margin. At March 31, 2024, the carrying value of the Company's total debt was $4.2 million, which approximates fair value. The fair value for the amended Loan Agreement was estimated by discounting the future cash flows using the current rates at which similar loans would be made to borrowers with similar credit ratings and is therefore classified as Level 2 in the fair value hierarchy.

Impact of Recently Issued Accounting Pronouncements

Impact of Recently Issued Accounting Pronouncements

In December 2023, the FASB issued ASU 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures” (“ASU 2023-09”), which enhances the transparency and decision usefulness of income tax disclosures. Adjustments to the annual disclosure of income taxes include: a tabular rate reconciliation comprised of eight specific categories. Incomes taxes paid, disaggregated between significant federal, state, and foreign jurisdictions. Eliminating requirements to disclose the nature and estimate of reasonably possible changes to unrecognized tax benefits in the next 12 months or that an estimated range cannot be made. Adds a requirement to disclose income (or loss) from continuing operations before income tax expense (or benefit) and income tax expense (or benefit) from continuing operations disaggregated between domestic and foreign. The ASU is effective for public business entities for fiscal years beginning on or after December 15, 2024, with early adoption permitted. The amendments in ASU 2023-09 should be applied on a prospective basis. Retrospective application is permitted. This ASU is not expected to have a material effect on our financial condition or results of operations.

In November 2023, the FASB issued ASU 2023-07, “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures” (“ASU 2023-07”), which improves reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. The ASU is effective for public business entities for fiscal years beginning after December 15, 2023, and for interim reporting periods within fiscal years beginning after December 15, 2024. Early adoption permitted. The amendments in ASU 2023-07 should be applied retrospectively to all prior periods presented in the financial statements. We are currently evaluating the impact this guidance will have on our consolidated financial statements.

There were no other new accounting pronouncements issued or effective as of March 31, 2024 that had or are expected to have a material impact on our consolidated financial statements.

XML

Basis of Presentation and Significant Accounting Policies (Tables)

6 Months Ended

Mar. 31, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Summary of Activity for Contract Liabilities

The following is a summary of activity for contract liabilities, in thousands:

	Three Months Ended March 31,						Six Months Ended March 31,
	2024			2023			2024			2023
Beginning balance	$	9,518		$	6,955		$	8,018		$	7,231
New deposits		724			3,552			3,547			4,279
Deferred revenue		(9	)		—			(6	)		—
Revenue recognized		(1,218	)		(846	)		(2,544	)		(1,414	)
Adjustment		—			—			—			(435	)
Ending balance	$	9,015		$	9,661		$	9,015		$	9,661

Schedule of Product Warranty Liability

The following is a summary of activity in accrued warranty expense, in thousands:

	Six Months Ended March 31,
	2024			2023
Beginning balance	$	965		$	871
Additions for warranties issued during the period		97			342
Costs incurred during the period		(19	)		9
Changes in estimate for pre-existing warranties		(280	)		(139	)
Ending balance	$	763		$	1,083

XML

Long-Term Debt (Tables)

6 Months Ended

Mar. 31, 2024

Debt Disclosure [Abstract]

Summary of Finance Lease Liabilities and Long-Term Debt

Our finance lease liabilities and long-term debt consists of the following, in thousands:

	March 31, 2024			September 30, 2023
Revolving credit facility	$	—		$	—
Term loan		4,202			10,573
Finance leases		106			114
Total		4,308			10,687
Less: current portion of finance lease liabilities     and long-term debt		(4,243	)		(2,265	)
Finance Lease Liabilities and Long-Term Debt	$	65		$	8,422

XML

Acquisition (Tables)

6 Months Ended

Mar. 31, 2024

Business Combination and Asset Acquisition [Abstract]

Summary of Provisional Fair Value Assigned to Identifiable Assets Acquired and Liabilities Assumed

The following table summarizes the fair values assigned to identifiable assets acquired and liabilities assumed, in thousands:

	September 30, 2023
Fair value of total cash consideration transferred	$	39,227
Estimated fair value of identifiable assets acquired and liabilities assumed:
Cash and cash equivalents	$	4,289
Accounts receivable, net		5,884
Inventories		5,683
Other current assets		179
Property, plant, and equipment		2,040
Right-of-use assets		2,246
Intangible assets		13,600
Goodwill		16,463
Other assets		80
Total assets acquired		50,464
Accounts payable		1,574
Other accrued liabilities		1,994
Contract liabilities		1,949
Income taxes payable		985
Current portion of long-term operating lease liabilities		515
Long-term operating lease liabilities		1,730
Deferred tax liability		2,490
Total liabilities assumed		11,237
Net assets acquired	$	39,227

Fair Value Associated with Acquired Intangible Assets and Weighted-Average Amortization Periods

The fair value associated with acquired intangible assets and their associated weighted-average amortization periods consist of the following, in thousands:

	Classification of Amortization	Amount		Weighted-Average Amortization Period
Developed technology	Cost of sales	$	6,700	5.0 years
Customer relationships	Selling, general and administrative		2,800	10.0 years
Backlog	Selling, general and administrative		2,100	1.0 year
Trade names	Selling, general and administrative		1,800	10.0 years
Noncompetition agreements	Selling, general and administrative		200	5.0 years
Total intangible assets		$	13,600	6.1 years

Summary of Unaudited Pro forma Financial Information

The following unaudited pro forma financial information presents the combined results of operations of Amtech and Entrepix, in thousands, as if the acquisition occurred on October 1, 2021. The unaudited pro forma financial information is presented for informational purposes only and is not indicative of the results of operations that would have been achieved if the acquisition had taken place on the date indicated or of results that may occur in the future.

	Three Months Ended March 31,		Six Months Ended March 31,
	2023		2023
Revenues, Net	$	34,623	$	63,778
Net Income	$	4,285	$	1,149

XML

Earnings Per Share (Tables)

6 Months Ended

Mar. 31, 2024

Earnings Per Share [Abstract]

Reconciliation of Components of Basic and Diluted EPS Calculations

A reconciliation of the components of the basic and diluted EPS calculations follows, in thousands, except per share amounts:

	Three Months Ended March 31,				Six Months Ended March 31,
	2024		2023		2024			2023
Numerator:
Net income (loss)	$	970	$	3,204	$	(8,388	)	$	460
Denominator:
Weighted-average shares used to compute basic EPS		14,197		14,028		14,193			14,018
Dilutive potential common shares due to stock     options (1)		—		128		—			124
Dilutive potential common shares due to RSUs (1)		12		1		—			—
Weighted-average shares used to compute diluted EPS		14,209		14,157		14,193			14,142
Income (loss) per share:
Net income (loss) per basic share	$	0.07	$	0.23	$	(0.59	)	$	0.03
Net income (loss) per diluted share	$	0.07	$	0.23	$	(0.59	)	$	0.03

(1)The number of common stock equivalents is calculated using the treasury method and the average market price during the period.

XML

Inventories (Tables)

6 Months Ended

Mar. 31, 2024

Inventory Disclosure [Abstract]

Schedule of Components of Inventories

The components of inventories are as follows, in thousands:

	March 31, 2024		September 30, 2023
Purchased parts and raw materials	$	21,558	$	22,627
Work-in-process		7,058		7,774
Finished goods		2,692		4,444
	$	31,308	$	34,845

XML

Leases (Tables)

6 Months Ended

Mar. 31, 2024

Leases [Abstract]

Schedule of Financial Statement Classification of Lease Balances Within Condensed Consolidated Balance Sheets

The following table provides information about the financial statement classification of our lease balances reported within the Condensed Consolidated Balance Sheets, in thousands:

	March 31, 2024		September 30, 2023
Assets
Right-of-use assets - operating	$	9,784	$	11,217
Right-of-use assets - finance		106		123
Total right-of-use assets	$	9,890	$	11,340
Liabilities
Current
Operating lease liabilities	$	1,934	$	2,623
Finance lease liabilities		41		64
Total current portion of long-term lease liabilities		1,975		2,687
Long-term
Operating lease liabilities		8,195		8,894
Finance lease liabilities		65		50
Total long-term lease liabilities		8,260		8,944
Total lease liabilities	$	10,235	$	11,631

Schedule of Financial Statement Classification of Lease Expenses Reported in Condensed Consolidated Statements of Operations

The following table provides information about the financial statement classification of our lease expenses reported in the Condensed Consolidated Statements of Operations, in thousands:

		Three Months Ended March 31,				Six Months Ended March 31,
Lease cost	Classification	2024		2023		2024		2023
Operating lease cost	Cost of sales	$	373	$	688	$	1,118	$	1,149
Operating lease cost	Selling, general and administrative		464		202		668		379
Operating lease cost	Research, development and engineering		3		4		6		7
Finance lease cost	Cost of sales		1		1		2		2
Finance lease cost	Selling, general and administrative		22		18		42		36
Short-term lease cost	Cost of sales		—		9		—		17
Total lease cost		$	863	$	922	$	1,836	$	1,590

Future Minimum Lease Payments Under Non-cancelable Leases

Future minimum lease payments under non-cancelable leases as of March 31, 2024 are as follows, in thousands:

	Operating Leases		Finance Leases		Total
Remainder of 2024	$	1,416	$	31	$	1,447
2025		2,059		29		2,088
2026		1,725		29		1,754
2027		1,106		21		1,127
2028		1,115		5		1,120
Thereafter		5,144		—		5,144
Total lease payments		12,565		115		12,680
Less: Interest		2,436		9		2,445
Present value of lease liabilities	$	10,129	$	106	$	10,235

Schedule of Weighted Average Remaining Term and Discount Rates

The following table provides information about the remaining lease terms and discount rates applied:

	March 31, 2024			September 30, 2023
Weighted average remaining lease term
Operating leases	7.72 years			7.31 years
Finance leases	4.88 years			2.54 years
Weighted average discount rate
Operating leases		5.60	%		5.50	%
Finance leases		5.52	%		4.91	%

XML

Goodwill and Intangible Assets (Tables)

6 Months Ended

Mar. 31, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets

The Company’s intangible assets, net consists of the following, in thousands:

		March 31,			September 30,
	Amortization Period	2024			2023
Backlog	1 year	$	2,100		$	2,100
Customer relationships	6-10 years		4,409			4,409
Developed technology	5 years		6,700			6,700
Noncompetition agreements	5 years		200			200
Trade names	3-15 years		2,679			2,679
			16,088			16,088
Accumulated amortization			(5,268	)		(4,785	)
Less asset impairments:
Backlog			(425	)		(425	)
Customer relationships			(339	)		(119	)
Developed technology			(5,494	)		(4,645	)
Noncompetition agreements			(160	)		—
Trade names			(50	)		—
Intangible assets, net		$	4,352		$	6,114

Schedule of Future Amortization Expense

The estimated aggregate amortization expense for each of the five succeeding fiscal years as of March 31, 2024 is as follows, thousands:

Year ending September 30:	Amount
2024	$	348
2025		511
2026		511
2027		511
2028		511
Thereafter		1,960
Total	$	4,352

Schedule of Goodwill

The Company evaluates goodwill at the reporting unit level, which, for the Company, is at the level of the reportable segments, semiconductor and material and substrate. The changes in carrying amount of goodwill allocated to each of the reporting units for the six months ended March 31, 2024 is as follows, in thousands:

	Semiconductor		Material and Substrate			Total Goodwill
Goodwill	$	5,905	$	21,726		$	27,631
Accumulated impairment losses		—		—			—
Balance at September 30, 2023		5,905		21,726			27,631
Goodwill acquired		—		—			—
Impairment of goodwill		—		(6,370	)		(6,370	)
Balance at March 31, 2024	$	5,905	$	15,356		$	21,261
Goodwill	$	5,905	$	21,726		$	27,631
Accumulated impairment losses		—		(6,370	)		(6,370	)
Balance at March 31, 2024	$	5,905	$	15,356		$	21,261

XML

Equity and Stock-Based Compensation (Tables)

6 Months Ended

Mar. 31, 2024

Share-Based Payment Arrangement [Abstract]

Summary of Stock Option Activity

The following table summarizes our stock option activity during the six months ended March 31, 2024:

	Options			Weighted Average Exercise Price
Outstanding at beginning of period		672,924		$	8.76
Granted		557,500			5.66
Exercised		(5,000	)		5.67
Forfeited		(43,991	)		9.63
Outstanding at end of period		1,181,433		$	7.28
Exercisable at end of period		424,643		$	8.49
Weighted average fair value of options granted during the period	$	2.44

Schedule of Fair Value of Stock Option Using Black-Scholes Option Pricing Model

The fair value of options was estimated at the applicable grant date using the Black-Scholes option pricing model with the following assumptions:

	Six Months Ended March 31,
	2024			2023
Risk free interest rate		4	%		4	%
Expected term	5 years			5 years
Dividend rate		—	%		—	%
Volatility		60	%		56	%

Schedule of Restricted Shares Activity

The following table summarizes our RSU activity during the six months ended March 31, 2024:

	Number			Weighted Average Grant Date Fair Value
Nonvested at beginning of year		75,977		$	9.15
Granted		24,897			4.82
Released		(20,421	)		9.55
Forfeited		—			—
Nonvested at end of period		80,453		$	7.71

XML

Reportable Segments (Tables)

6 Months Ended

Mar. 31, 2024

Segment Reporting [Abstract]

Schedule of Reportable Segments Information

Information concerning our reportable segments is as follows, in thousands:

	Three Months Ended March 31,						Six Months Ended March 31,
	2024			2023			2024			2023
Net Revenues:
Semiconductor	$	17,441		$	22,047		$	34,968		$	38,934
Material and Substrate		7,992			11,263			15,385			15,934
	$	25,433		$	33,310		$	50,353		$	54,868
Operating income (loss):
Semiconductor	$	896		$	2,950		$	1,977		$	3,819
Material and Substrate		900			297			(6,943	)		930
Non-segment related		(433	)		(2,728	)		(2,605	)		(6,910	)
	$	1,363		$	519		$	(7,571	)	$	(2,161	)

	March 31, 2024		September 30, 2023
Identifiable Assets:
Semiconductor	$	63,986	$	72,466
Material and Substrate		50,579		61,576
Non-segment related*		1,909		2,979
	$	116,474	$	137,021

* Non-segment related assets include cash, property, and other assets.

XML

Major Customers and Foreign Sales (Tables)

6 Months Ended

Mar. 31, 2024

Geographic Areas, Revenues from External Customers [Abstract]

Schedule of Revenues by Geographic Region

Our net revenues were from customers in the following geographic regions:

	Six Months Ended March 31,
	2024			2023
United States		43	%		33	%
Canada		1	%		8	%
Mexico		1	%		3	%
Other		—	%		2	%
Total Americas		45	%		46	%
China		23	%		13	%
Malaysia		8	%		9	%
Taiwan		4	%		5	%
Other		4	%		9	%
Total Asia		39	%		36	%
Germany		8	%		2	%
Austria		1	%		6	%
Czech Republic		3	%		3	%
Other		4	%		7	%
Total Europe		16	%		18	%
		100	%		100	%

XML

Basis of Presentation and Significant Accounting Policies - Summary of Activity for Contract Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Beginning balance	$ 9,518	$ 6,955	$ 8,018	$ 7,231
New deposits	724	3,552	3,547	4,279
Deferred revenue	(9)		(6)
Revenue recognized	(1,218)	(846)	(2,544)	(1,414)
Adjustment				(435)
Ending balance	$ 9,015	$ 9,661	$ 9,015	$ 9,661

XML

Basis of Presentation and Significant Accounting Policies - Contract Liabilities - Additional Information (Details) - USD ($) $ in Millions	Mar. 31, 2024	Sep. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Remaining performance obligations	$ 44.3	$ 51.8

XML

Basis of Presentation and Significant Accounting Policies - Warranty- Additional Information (Details) - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2024	Sep. 30, 2023
Product Warranty Liability [Line Items]
Standard product warranty, description	A limited warranty is provided free of charge, generally for periods of 12 to 36 months to all purchasers of our new products and systems.
Accrued warranty expense	$ 763	$ 965
Minimum
Product Warranty Liability [Line Items]
Standard product warranty, period	12 months
Maximum
Product Warranty Liability [Line Items]
Standard product warranty, period	36 months

XML

Basis of Presentation and Significant Accounting Policies - Schedule of Product Warranty Liability (Details) - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Beginning Balance	$ 965	$ 871
Additions for warranties issued during the period	97	342
Costs incurred during the period	(19)
Costs incurred during the period		9
Changes in estimate for pre-existing warranties	(280)	(139)
Ending Balance	$ 763	$ 1,083

XML

Basis of Presentation and Significant Accounting Policies - Shipping Expense - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Schedule Of Expense [Line Items]
Selling, general and administrative expenses	$ 8,252	$ 11,434	$ 16,819	$ 20,624
Shipping
Schedule Of Expense [Line Items]
Selling, general and administrative expenses	$ 500	$ 800	$ 1,100	$ 1,400

XML

Basis of Presentation and Significant Accounting Policies - Concentrations of Credit Risk - Additional Information (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Mar. 31, 2024	Sep. 30, 2023
Concentration Risk [Line Items]
Percentage of cash balances	72.00%	56.00%
Investment, Type [Extensible Enumeration]	U S Treasuries And F D I C Insured [Member]	U S Treasuries And F D I C Insured [Member]
Amtech's
Concentration Risk [Line Items]
Cash Insured Limits	$ 8.2	$ 6.0
Accounts Receivable | Customer Concentration Risk | Customer One
Concentration Risk [Line Items]
Concentration risk, percentage	14.00%	17.00%
Accounts Receivable | Customer Concentration Risk | Customer Two
Concentration Risk [Line Items]
Concentration risk, percentage	14.00%	17.00%

XML

Basis of Presentation and Significant Accounting Policies - Fair Value of Financial Instruments - Additional Information (Details) $ in Millions	Mar. 31, 2024 USD ($)
Amended Loan Agreement [Member]
Debt Instrument [Line Items]
Carrying value of debt	$ 4.2

XML

Long-Term Debt - Summary of Finance Lease Liabilities and Long-Term Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Sep. 30, 2023
Debt Instrument [Line Items]
Finance leases	$ 106	$ 114
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]	us-gaap:DebtAndCapitalLeaseObligations	us-gaap:DebtAndCapitalLeaseObligations
Total	$ 4,308	$ 10,687
Less: current portion of finance lease liabilities and long-term debt	(4,243)	(2,265)
Finance Lease Liabilities and Long-Term Debt	65	8,422
Term Loan
Debt Instrument [Line Items]
Long-term debt, gross	$ 4,202	$ 10,573

XML

Long-Term Debt - Additional Information (Details) - USD ($)			3 Months Ended		6 Months Ended
	Dec. 05, 2023	Jan. 17, 2023	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023	Sep. 30, 2023
Debt Instrument [Line Items]
Interest expense on long term debt and finance lease liabilities			$ 200,000	$ 200,000	$ 400,000	$ 200,000
Cash and cash equivalents			13,000,000		$ 13,000,000		$ 13,133,000
Debt covenant description					The Revolver has a floating per annum rate of interest equal to the Prime Rate, adjusted daily. Under the Loan Agreement, we are required to pay a non-utilization fee equal to 0.125% of any unused portion of the Revolver in excess of any letter of credit obligations.  The Term Loan and Revolver are secured by a first priority lien on substantially all of the Borrowers’ assets (other than certain customary excluded assets) and the Loan Agreement contains customary events of default, representations and warranties, and covenants that restrict the Borrowers’ ability to, among other things, incur additional indebtedness, other than permitted indebtedness, enter into mergers or acquisitions, sell or otherwise dispose of assets, or pay dividends, subject to customary exceptions. The Loan Agreement additionally contains financial covenants such that, as of the end of each of their fiscal quarters, beginning March 31, 2023, the Borrowers must maintain (i) a ratio of consolidated debt owed to Lender to consolidated EBITDA (as defined in the Loan Agreement) for such fiscal quarter, of not greater than 1.50 to 1.00, through December 31, 2024, based on a building four quarters (as described in the Loan Agreement), and then 1.00 to 1.00 each fiscal quarter thereafter, (ii) a ratio of (a) the total for such fiscal quarter of EBITDAR (as defined in the Loan Agreement) minus the sum of all income taxes paid in cash plus cash dividends/distributions plus maintenance Capital Expenditures (as defined in the Loan Agreement) plus management fees paid in cash, to (b) the sum for such fiscal quarter of (1) Interest Charges (as defined in the Loan Agreement) plus (2) required payments of principal on Debt (as defined in the Loan Agreement) (including the Term Loan, but excluding the Revolver) plus (3) operating lease/rent expense, of not less than 1.30 to 1.00 based on a building four quarters (as described in the Loan Agreement), and (iii) a consolidated working capital of current assets (excluding related party receivables and prepaid expenses) minus current liabilities of at least $35.0 million
Finance leases			$ 106,000		$ 106,000		$ 114,000
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]			us-gaap:DebtAndCapitalLeaseObligations		us-gaap:DebtAndCapitalLeaseObligations		us-gaap:DebtAndCapitalLeaseObligations
Term Loan
Debt Instrument [Line Items]
Carrying value of debt			$ 4,202,000		$ 4,202,000		$ 10,573,000
Loan and Security Agreement | UMB Bank, N.A. | Revolving Loan Facility
Debt Instrument [Line Items]
Loan facility available		$ 8,000,000
Loan facility maturity date		Jan. 17, 2024
Loan and Security Agreement | UMB Bank, N.A. | Term Loan
Debt Instrument [Line Items]
Debt instruments carrying value		$ 12,000,000
Debt instrument maturity date		Jan. 17, 2028
Interest rate			6.38%		6.38%
Loan Agreement
Debt Instrument [Line Items]
EBITDA covenant					$ 1,000,000
Carrying value of debt			$ 4,200,000		4,200,000
Cash and cash equivalents			13,000,000		13,000,000
Loan Agreement | Maximum
Debt Instrument [Line Items]
EBITDA covenant					$ 800,000
Operating lease or rent expense ratio					1.30%
Loan Agreement | Minimum
Debt Instrument [Line Items]
Consolidated working capital			35,000,000		$ 35,000,000
Operating lease or rent expense ratio					1.00%
Forbearance and Modification Agreement
Debt Instrument [Line Items]
Debt instruments carrying value	$ 10,000,000
Forbearance and Modification Agreement | Revolving Loan Facility
Debt Instrument [Line Items]
Amount drawn	5,600,000
Forbearance and Modification Agreement | Term Loan
Debt Instrument [Line Items]
Debt instruments carrying value	4,400,000
Forbearance and Modification Agreement | UMB Bank, N.A. | Revolving Loan Facility
Debt Instrument [Line Items]
Debt instruments carrying value			0		$ 0		0
Loan facility available	$ 14,000,000
Percentage of non-utilization fee	0.125%
Line of credit outstanding amount			$ 300,000		$ 300,000		$ 0
Forbearance and Modification Agreement | UMB Bank, N.A. | Term Loan
Debt Instrument [Line Items]
Debt instruments carrying value	$ 4,400,000
Debt instrument maturity date	Jan. 17, 2029
Forbearance and Modification Agreement | Maximum
Debt Instrument [Line Items]
Operating lease or rent expense ratio					1.30%
Forbearance and Modification Agreement | Maximum | UMB Bank, N.A. | Revolving Loan Facility
Debt Instrument [Line Items]
Loan facility maturity date	Jan. 17, 2025
Forbearance and Modification Agreement | Minimum
Debt Instrument [Line Items]
Operating lease or rent expense ratio					1.00%
Forbearance and Modification Agreement | Minimum | UMB Bank, N.A. | Revolving Loan Facility
Debt Instrument [Line Items]
Expiration period	1 year
Forbearance and Modification Agreement | Minimum | UMB Bank, N.A. | Term Loan
Debt Instrument [Line Items]
Debt instrument term	1 year

XML

Acquisition - Additional Information (Details) - USD ($) $ in Thousands		3 Months Ended	6 Months Ended		8 Months Ended	12 Months Ended
	Jan. 17, 2023	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023	Sep. 30, 2023	Sep. 30, 2023
UMB Bank, N.A. | Term Loan | Loan and Security Agreement
Business Acquisition [Line Items]
Debt instruments carrying value	$ 12,000
Debt Instrument, Maturity Date	Jan. 17, 2028
UMB Bank, N.A. | Revolving Loan Facility | Loan and Security Agreement
Business Acquisition [Line Items]
Loan facility available	$ 8,000
Loan facility maturity date	Jan. 17, 2024
Entrepix, Inc.
Business Acquisition [Line Items]
Total cash consideration for the acquisition			$ 39,200		$ 39,227
Business acquisition, percentage of voting interests acquired	100.00%
Cash consideration to the sellers			35,200
Cash paid for debt and Entrepix transaction costs			$ 4,000
Incremental (reversal) amortization expense on intangible assets acquired		$ (500)		$ 900
Entrepix, Inc. | Term Loan
Business Acquisition [Line Items]
Incremental interest expense on loan		$ 200		$ 300
Amtech's | General and Administrative Expenses
Business Acquisition [Line Items]
Acquisition cost						$ 2,500

XML

Acquisition - Summary of Provisional Fair Value Assigned to Identifiable Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	6 Months Ended	8 Months Ended
	Mar. 31, 2024	Sep. 30, 2023
Estimated fair value of identifiable assets acquired and liabilities assumed:
Goodwill	$ 21,261	$ 27,631
Entrepix, Inc.
Consideration:
Fair value of total cash consideration transferred	$ 39,200	39,227
Estimated fair value of identifiable assets acquired and liabilities assumed:
Cash and cash equivalents		4,289
Accounts receivable, net		5,884
Inventories		5,683
Other current assets		179
Property, plant, and equipment		2,040
Right-of-use assets		2,246
Intangible assets		13,600
Goodwill		16,463
Other assets		80
Total assets acquired		50,464
Accounts payable		1,574
Other accrued liabilities		1,994
Contract liabilities		1,949
Income taxes payable		985
Current portion of long-term operating lease liabilities		515
Long-term operating lease liabilities		1,730
Deferred tax liability		2,490
Total liabilities assumed		11,237
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net, Total		$ 39,227

XML

Acquisition - Fair Value Associated with Acquired Intangible Assets and Weighted-Average Amortization Periods (Details) - Entrepix, Inc. $ in Thousands	6 Months Ended
	Mar. 31, 2024 USD ($)
Business Acquisition [Line Items]
Total intangible assets	$ 13,600
Weighted-Average Amortization Period	6 years 1 month 6 days
Cost of Sales | Developed Technology Rights [Member]
Business Acquisition [Line Items]
Total intangible assets	$ 6,700
Weighted-Average Amortization Period	5 years
Selling, General and Administrative | Customer Relationships
Business Acquisition [Line Items]
Total intangible assets	$ 2,800
Weighted-Average Amortization Period	10 years
Selling, General and Administrative | Backlog
Business Acquisition [Line Items]
Total intangible assets	$ 2,100
Weighted-Average Amortization Period	1 year
Selling, General and Administrative | Trade names
Business Acquisition [Line Items]
Total intangible assets	$ 1,800
Weighted-Average Amortization Period	10 years
Selling, General and Administrative | Noncompetition Agreements
Business Acquisition [Line Items]
Total intangible assets	$ 200
Weighted-Average Amortization Period	5 years

XML

Acquisition - Summary of Unaudited Pro forma Financial Information (Details) - Amtech and Entrepix - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Mar. 31, 2023	Mar. 31, 2023
Business Acquisition [Line Items]
Revenues, Net	$ 34,623	$ 63,778
Net Income	$ 4,285	$ 1,149

XML

Earnings Per Share - Additional Information (Details) - shares	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Stock Options
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	817,191	327,000	645,244	293,000

XML

Earnings Per Share - Reconciliation of Components of Basic and Diluted EPS Calculations (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Numerator:
Net income (loss)	$ 970	$ 3,204	$ (8,388)	$ 460
Denominator:
Weighted-average shares used to compute basic EPS	14,197	14,028	14,193	14,018
Weighted-average shares used to compute diluted EPS	14,209	14,157	14,193	14,142
Net income (loss) per basic share	$ 0.07	$ 0.23	$ (0.59)	$ 0.03
Net income (loss) per diluted share	$ 0.07	$ 0.23	$ (0.59)	$ 0.03
Stock Options
Denominator:
Dilutive potential common shares		128		124
RSU
Denominator:
Dilutive potential common shares	12	1

XML

Inventories - Schedule of Components of Inventories (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Sep. 30, 2023
Inventory Disclosure [Abstract]
Purchased parts and raw materials	$ 21,558	$ 22,627
Work-in-process	7,058	7,774
Finished goods	2,692	4,444
Inventories	$ 31,308	$ 34,845

XML

Leases - Additional Information (Details) - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2024	Jun. 30, 2024	Sep. 30, 2023
Lessee Lease Description [Line Items]
Operating lease, existence of option to extend	true
Operating lease, optional lease extension periods for multiple leases, description	Operating lease payments include $2.3 million related to options to extend lease terms that are reasonably certain of being exercised.
Payments related to optional lease extension periods for multiple leases	$ 2,300
Operating lease ROU asset	9,784		$ 11,217
Operating lease liability	$ 10,129
Forecast
Lessee Lease Description [Line Items]
Operating lease ROU asset		$ 8,600
Operating lease liability		$ 8,600

XML

Leases - Schedule of Financial Statement Classification of Lease Balances Within Condensed Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Sep. 30, 2023
Leases [Abstract]
Right-of-use assets - operating	$ 9,784	$ 11,217
Right-of-use assets - finance	$ 106	$ 123
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Property, Plant and Equipment - Net	Property, Plant and Equipment - Net
Total right-of-use assets	$ 9,890	$ 11,340
Operating lease liabilities	$ 1,934	$ 2,623
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Operating lease liabilities	Operating lease liabilities
Finance lease liabilities	$ 41	$ 64
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	Current maturities of finance lease liabilities and long-term debt	Current maturities of finance lease liabilities and long-term debt
Total current portion of long-term lease liabilities	$ 1,975	$ 2,687
Operating lease liabilities	$ 8,195	$ 8,894
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Operating lease liabilities	Operating lease liabilities
Finance lease liabilities	$ 65	$ 50
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Finance Lease Liabilities and Long-Term Debt	Finance Lease Liabilities and Long-Term Debt
Total long-term lease liabilities	$ 8,260	$ 8,944
Total lease liabilities	$ 10,235	$ 11,631

XML

Leases - Schedule of Financial Statement Classification of Lease Expenses Reported in Condensed Consolidated Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Lessee Lease Description [Line Items]
Total lease cost	$ 863	$ 922	$ 1,836	$ 1,590
Cost of sales
Lessee Lease Description [Line Items]
Operating lease cost	373	688	1,118	1,149
Finance lease cost	1	1	2	2
Short-term lease cost		9		17
Selling, general and administrative
Lessee Lease Description [Line Items]
Operating lease cost	464	202	668	379
Finance lease cost	22	18	42	36
Research, development and engineering
Lessee Lease Description [Line Items]
Operating lease cost	$ 3	$ 4	$ 6	$ 7

XML

Leases - Future Minimum Lease Payments Under Non-cancelable Leases (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Sep. 30, 2023
Operating Lease
Remainder of 2024	$ 1,416
2025	2,059
2026	1,725
2027	1,106
2028	1,115
Thereafter	5,144
Total lease payments	12,565
Less: Interest	2,436
Present value of lease liabilities	10,129
Finance Lease
Remainder of 2024	31
2025	29
2026	29
2027	21
2028	5
Total lease payments	115
Less: Interest	9
Present value of lease liabilities	106	$ 114
Operating Lease and Finance lease
Remainder of 2024	1,447
2025	2,088
2026	1,754
2027	1,127
2028	1,120
Thereafter	5,144
Total lease payments	12,680
Less: Interest	2,445
Present value of lease liabilities	$ 10,235

XML

Leases - Schedule of Weighted Average Remaining Term and Discount Rates (Details)	Mar. 31, 2024	Sep. 30, 2023
Leases [Abstract]
Operating leases, Weighted average remaining lease term	7 years 8 months 19 days	7 years 3 months 21 days
Finance leases, Weighted average remaining lease term	4 years 10 months 17 days	2 years 6 months 14 days
Operating leases, Weighted average discount rate	5.60%	5.50%
Finance leases, Weighted average discount rate	5.52%	4.91%

XML

Goodwill and Intangible Assets - Schedule of Finite-Lived Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Sep. 30, 2023
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 16,088	$ 16,088
Accumulated Amortization	(5,268)	(4,785)
Net Carrying Amount	$ 4,352	6,114
Backlog
Finite-Lived Intangible Assets [Line Items]
Useful Life	1 year
Gross Carrying Amount	$ 2,100	2,100
Less asset impairments:	(425)	(425)
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	4,409	4,409
Less asset impairments:	$ (339)	(119)
Customer Relationships | Minimum
Finite-Lived Intangible Assets [Line Items]
Useful Life	6 years
Customer Relationships | Maximum
Finite-Lived Intangible Assets [Line Items]
Useful Life	10 years
Developed technology
Finite-Lived Intangible Assets [Line Items]
Useful Life	5 years
Gross Carrying Amount	$ 6,700	6,700
Less asset impairments:	$ (5,494)	(4,645)
Noncompetition Agreements
Finite-Lived Intangible Assets [Line Items]
Useful Life	5 years
Gross Carrying Amount	$ 200	200
Less asset impairments:	(160)
Trade names
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,679	$ 2,679
Less asset impairments:	$ (50)
Trade names | Minimum
Finite-Lived Intangible Assets [Line Items]
Useful Life	3 years
Trade names | Maximum
Finite-Lived Intangible Assets [Line Items]
Useful Life	15 years

XML

Goodwill and Intangible Assets - Schedule of Future Amortization Expense (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Sep. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
2024	$ 348
2025	511
2026	511
2027	511
2028	511
Thereafter	1,960
Net Carrying Amount	$ 4,352	$ 6,114

XML

Goodwill and Intangible Assets - Additional Information (Details) - USD ($)	3 Months Ended			6 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	$ 200,000		$ 1,000,000	$ 500,000	$ 1,000,000
Impairment of goodwill				$ 6,370,000
Materials and Substrate
Finite-Lived Intangible Assets [Line Items]
Total impairment charge		$ 1,300,000
Semiconductor and Material and Substrate
Finite-Lived Intangible Assets [Line Items]
Impairment of goodwill	$ 0

XML

Goodwill and Intangible Assets - Schedule of Goodwill (Details) $ in Thousands	6 Months Ended
	Mar. 31, 2024 USD ($)	Sep. 30, 2023 USD ($)
Goodwill [Line Items]
Beginning balance	$ 27,631
Impairment of goodwill	(6,370)
Goodwill	27,631	$ 27,631
Accumulated impairment losses	(6,370)
Ending balance	21,261
Semiconductor
Goodwill [Line Items]
Beginning balance	5,905
Goodwill	5,905	5,905
Ending balance	5,905
Material and Substrate
Goodwill [Line Items]
Beginning balance	21,726
Impairment of goodwill	(6,370)
Goodwill	21,726	$ 21,726
Accumulated impairment losses	(6,370)
Ending balance	$ 15,356

XML

Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Income Tax Disclosure [Abstract]
Effective income tax rate			(3.50%)	118.00%
U.S. federal statutory rate			21.00%	21.00%
Income tax (benefit) expense	$ 223	$ (2,946)	$ 281	$ (2,950)

XML

Equity and Stock-Based Compensation - Additional Information (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Feb. 10, 2023	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock-based compensation expense		$ 300	$ 200	$ 667	$ 338
2023 Stock Repurchase Plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Authorized stock repurchase amount	$ 5,000
Stock repurchase program period	1 year
Shares repurchased and retired during the period		0

XML

Equity and Stock-Based Compensation - Summary of Stock Option Activity (Details) - Employee Stock Option	6 Months Ended
	Mar. 31, 2024 $ / shares shares
Options
Outstanding at beginning of period | shares	672,924
Granted | shares	557,500
Exercised | shares	(5,000)
Forfeited | shares	(43,991)
Outstanding at end of period | shares	1,181,433
Exercisable at end of period | shares	424,643
Weighted average fair value of options granted during the period	$ 2.44
Weighted Average Exercise Price
Outstanding at beginning of period	8.76
Granted	5.66
Exercised	5.67
Forfeited	9.63
Outstanding at end of period	7.28
Exercisable at end of period	$ 8.49

XML

Equity and Stock-Based Compensation - Schedule of Fair Value of Stock Option Using Black-Scholes Option Pricing Model (Details)	6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Share-Based Payment Arrangement [Abstract]
Risk free interest rate	4.00%	4.00%
Expected term	5 years	5 years
Volatility	60.00%	56.00%

XML

Equity and Stock-Based Compensation - Summary of RSU activity (Details) - RSU	6 Months Ended
	Mar. 31, 2024 $ / shares shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Nonvested at beginning of period | shares	75,977
Number of shares, Granted | shares	24,897
Number of shares, Released | shares	(20,421)
Nonvested at end of period | shares	80,453
Weighted Average Grant Date Fair Value, Nonvested at beginning of year | $ / shares	$ 9.15
Weighted Average Grant Date Fair Value, Granted | $ / shares | $ / shares	4.82
Weighted Average Grant Date Fair Value, Released | $ / shares	9.55
Weighted Average Grant Date Fair Value, Nonvested at end of period | $ / shares	$ 7.71

XML

Commitments and Contingencies - Additional Information (Details) $ in Millions	6 Months Ended
	Mar. 31, 2024 USD ($)
Commitments and Contingencies [Line Items]
Purchase obligation	$ 16.3
Minimum
Commitments and Contingencies [Line Items]
Severance payment term	6 months
Maximum
Commitments and Contingencies [Line Items]
Severance payment term	12 months

XML

Reportable Segments - Additional Information (Details)	6 Months Ended
	Mar. 31, 2024 Segment
Segment Reporting [Abstract]
Number of reportable segments	2
Number of operating segments	2

XML

Reportable Segments - Schedule of Reportable Segment Information (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023	Sep. 30, 2023
Segment Reporting Information [Line Items]
Net Revenues		$ 25,433	$ 33,310	$ 50,353	$ 54,868
Operating income (loss)		1,363	519	(7,571)	(2,161)
Identifiable Assets		116,474		116,474		$ 137,021
Operating Segments | Semiconductor
Segment Reporting Information [Line Items]
Net Revenues		17,441	22,047	34,968	38,934
Operating income (loss)		896	2,950	1,977	3,819
Identifiable Assets		63,986		63,986		72,466
Operating Segments | Material and Substrate
Segment Reporting Information [Line Items]
Net Revenues		7,992	11,263	15,385	15,934
Operating income (loss)		900	297	(6,943)	930
Identifiable Assets		50,579		50,579		61,576
Non-Segment Related
Segment Reporting Information [Line Items]
Operating income (loss)		(433)	$ (2,728)	(2,605)	$ (6,910)
Identifiable Assets	[1]	$ 1,909		$ 1,909		$ 2,979

[1] * Non-segment related assets include cash, property, and other assets.

XML

Major Customers and Foreign Sales - Additional Information (Details) - Net Revenues - Customer Concentration Risk	6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Customer One
Revenue, Major Customer [Line Items]
Concentration risk, percentage	12.00%	12.00%
Customer Two
Revenue, Major Customer [Line Items]
Concentration risk, percentage		11.00%

XML

Major Customers and Foreign Sales - Schedule of Revenues by Geographic Region (Details) - Net Revenues - Geographic Concentration Risk	6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Revenue, Major Customer [Line Items]
Concentration risk, percentage	100.00%	100.00%
United States
Revenue, Major Customer [Line Items]
Concentration risk, percentage	43.00%	33.00%
Canada
Revenue, Major Customer [Line Items]
Concentration risk, percentage	1.00%	8.00%
Mexico
Revenue, Major Customer [Line Items]
Concentration risk, percentage	1.00%	3.00%
Other North America
Revenue, Major Customer [Line Items]
Concentration risk, percentage		2.00%
Total Americas
Revenue, Major Customer [Line Items]
Concentration risk, percentage	45.00%	46.00%
China
Revenue, Major Customer [Line Items]
Concentration risk, percentage	23.00%	13.00%
Malaysia
Revenue, Major Customer [Line Items]
Concentration risk, percentage	8.00%	9.00%
Taiwan
Revenue, Major Customer [Line Items]
Concentration risk, percentage	4.00%	5.00%
Other Asia
Revenue, Major Customer [Line Items]
Concentration risk, percentage	4.00%	9.00%
Total Asia
Revenue, Major Customer [Line Items]
Concentration risk, percentage	39.00%	36.00%
Germany
Revenue, Major Customer [Line Items]
Concentration risk, percentage	8.00%	2.00%
Austria
Revenue, Major Customer [Line Items]
Concentration risk, percentage	1.00%	6.00%
Czech Republic
Revenue, Major Customer [Line Items]
Concentration risk, percentage	3.00%	3.00%
Other Europe
Revenue, Major Customer [Line Items]
Concentration risk, percentage	4.00%	7.00%
Total Europe
Revenue, Major Customer [Line Items]
Concentration risk, percentage	16.00%	18.00%