Summary Of Significant Accounting Policies (Policy)

12 Months Ended

Sep. 27, 2025

Accounting Policies [Abstract]

Consolidation

Consolidation: The consolidated financial statements include the accounts of Moog Inc. and all of our U.S. and foreign subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.

Fiscal Year

Fiscal Year: Our fiscal year ends on the Saturday that is closest to September 30. The consolidated financial statements include 52 weeks for the years ended September 27, 2025, September 28, 2024 and September 30, 2023.

Operating Cycle

Operating Cycle: Consistent with industry practice, aerospace and defense related inventories, unbilled recoverable costs and profits on over-time contract receivables, customer advances, warranties and contract reserves include amounts relating to contracts having long production and procurement cycles, portions of which are not expected to be realized or settled within one year.

Foreign Currency Translation

Foreign Currency Translation: Assets and liabilities of subsidiaries that prepare financial statements in currencies other than the U.S. dollar are translated using rates of exchange as of the balance sheet date and the statements of earnings are translated at the average rates of exchange for each reporting period.

Use Of Estimates

Use of Estimates: The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from those estimates and assumptions.

Revenue Recognition

Revenue Recognition: We recognize revenue from contracts with customers using an over-time, cost-to-cost method of accounting or at the point in time that control transfers to the customer. For additional discussion on revenue recognition, see Note 2 - Revenue from Contracts with Customers.

Cost of Sales

Cost of Sales: Includes costs of products and services sold, which include but are not limited to: purchased product, raw material, direct and engineering labor and related benefits, shipping and handling costs, depreciation and amortization, indirect costs and overhead charges.

Research and Development

Research and Development: Research and development costs are expensed as incurred and include salaries, benefits, consulting, material costs, depreciation and amortization.

Selling, General and Administrative Expenses

Selling, General and Administrative Expenses: Selling, general and administrative expenses are expensed as incurred. Such expenses include, but are not limited to advertising, bid and proposal, consulting, depreciation, employee payroll and related benefits, legal and professional costs.

Government Assistance

Government Assistance: We receive various types of government assistance, primary in the form of grants and refundable tax credits. We recognize government assistance when there is reasonable assurance that it will comply with the relevant conditions and the assistance will be received. Government assistance related to property, plant and equipment is recorded as a reduction to the carrying value of the related asset, which reduces depreciation expense over the expected useful life of the asset on a straight-line basis. See Note 4 – Receivables and Note 6 – Property, Plant and Equipment for additional disclosures related to government assistance.

Equity-Based Compensation

Equity-Based Compensation: Our equity-based compensation plans allow for various types of equity-based incentive awards. The types and mix of these incentive awards are evaluated on an on-going basis and may vary based on our overall strategy regarding compensation. Equity-based compensation expense is based on awards that are ultimately expected to vest over the requisite service periods and are based on the fair value of the award measured on the grant date. Vesting requirements vary for directors, officers and key employees. In general, awards granted to officers and key employees principally vest over three years, in equal annual installments for time-based awards and in three years cliff vest for performance-based awards. We have elected to account for forfeitures when the forfeiture of the underlying awards occur. Equity-based compensation expense is included in selling, general and administrative expenses.

Cash and Cash Equivalents

Cash and Cash Equivalents: All highly liquid investments with an original maturity of three months or less are considered cash equivalents.

Restricted Cash

Restricted Cash: Restricted cash principally represents funds held to satisfy supplemental retirement obligations.

Allowance for Credit Losses

Allowance for Credit Losses: The allowance for credit losses is based on our assessment of the collectibility of customer accounts. The allowance is determined by considering factors such as historical experience, credit quality, age of the accounts receivable, current economic conditions and reasonable forecasted financial information that may affect a customer’s ability to pay.

Inventories

Inventories: Inventories are stated at the lower of cost or net realizable value with cost determined primarily on the first-in, first-out (FIFO) method of valuation.

Property, Plant And Equipment

Property, Plant and Equipment: Property, plant and equipment are stated at cost. Plant and equipment are depreciated principally using the straight-line method over the estimated useful lives of the assets, generally ranging from 15 to 40 years for buildings and improvements, 5 to 15 years for machinery and equipment and 3 to 10 years for computer equipment and software. Leasehold improvements are amortized on a straight-line basis over the term of the lease or the estimated useful life of the asset, whichever is shorter.

Capitalized Interest

Capitalized Interest: The interest cost on certain long term capital projects is capitalized and included in the cost of the project. Capitalization begins with the first expenditure for the project and continues until the project is substantially complete and ready for its intended use. For the year ended September 27, 2025, we incurred total interest of $77,625 and capitalized $5,550, into property, plant and equipment. For the year ended September 28, 2024, we incurred total interest of $72,154 and capitalized $5,824 into property, plant and equipment. For the year ended September 30, 2023, we incurred total interest of $63,861 and capitalized $4,023 into property, plant and equipment.

Goodwill

Goodwill: We test goodwill for impairment at the reporting unit level on an annual basis or more frequently if an event occurs or circumstances change that indicate that the fair value of a reporting unit is likely to be below its carrying amount. We also test goodwill for impairment when there is a change in reporting units.

We may elect to perform a qualitative assessment that considers economic, industry and company-specific factors for all or selected reporting units. If, after completing this assessment, it is determined that it is more likely than not that the fair value of a reporting unit is less than its carrying value, we proceed to a quantitative test. We may also elect to perform a quantitative test instead of a qualitative assessment for any or all of our reporting units. We performed a qualitative test for all reporting units in 2025, 2024 and 2023.

Quantitative testing requires a comparison of the fair value of each reporting unit to its carrying value. We typically use the discounted cash flow method to estimate the fair value of our reporting units. The discounted cash flow method incorporates various assumptions, the most significant being projected revenue growth rates, operating margins and cash flows, the terminal growth rate and the weighted-average cost of capital. If the carrying value of the reporting unit exceeds its fair value, goodwill is considered impaired and any loss must be measured. To determine the amount of the impairment loss, the implied fair value of goodwill is determined by assigning a fair value to all of the reporting unit's assets and liabilities, including any unrecognized intangible assets, as if the reporting unit had been acquired in a business combination at fair value. If the carrying amount of the reporting unit goodwill exceeds the implied fair value of that goodwill, an impairment loss would be recognized in an amount equal to that excess.

There were no goodwill impairment charges recorded in 2025, 2024 or 2023.

Acquired Intangible Assets

Acquired Intangible Assets: Acquired identifiable intangible assets are recorded at fair value and are amortized over their estimated useful lives.

Impairment of Long-Lived Assets

Impairment of Long-Lived Assets: Long-lived assets, including acquired identifiable intangible assets, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of those assets may not be recoverable. We use undiscounted cash flows to determine whether impairment exists and measure any impairment loss using discounted cash flows.

In 2025, we recorded impairment charges on long-lived assets in our Industrial segment related to property and equipment that experienced a decline in value. These charges are included in asset impairment in the Consolidated Statements of Earnings.

In 2024, we initiated restructuring actions in conjunction with exiting a product line within our Military Aircraft segment and simplifying our business operations within our Industrial segment, both of which included the write off of intangible assets. We have recorded these charges based on the expected cash flows over the remaining life of the assets and are included in Restructuring in the Consolidated Statements of Earnings.

In 2023, we recorded an impairment charge on long-lived assets, as well as an inventory write-down in our Military Aircraft segment. These charges relate to equipment and inventory that experienced a decline in value due to the U.S. Air Force announcement to retire the KC-10 aerial refueling tanker and retirement of a trade name intangible. We also recorded impairment charges on receivables in our Space and Defense segment associated with an expected cancellation of a contract. In addition, we recorded impairment charges on long-lived assets, as well as an inventory write-down in our Industrial segment as we continue to review and simplify our business operations. These charges are included in asset impairment in the Consolidated Statements of Earnings.

See Note 4 - Receivables, Note 5 - Inventories, Note 6 - Property, Plant and Equipment, Note 7 - Leases and Note 8 - Goodwill and Intangible Assets for additional disclosures relating to impairment charges recorded.

Product Warranties

Product Warranties: In the ordinary course of business, we warrant our products against defect in design, materials and workmanship typically over periods ranging from twelve to sixty months. We determine warranty reserves needed by product line based on historical experience and current facts and circumstances.

Financial Instruments

Financial Instruments: Our financial instruments consist primarily of cash and cash equivalents, restricted cash, receivables, notes payable, accounts payable, long-term debt, interest rate swaps and foreign currency contracts. The carrying values for our financial instruments approximate fair value with the exception at times of long-term debt. We do not hold or issue financial instruments for trading purposes.

We carry derivative instruments on the Consolidated Balance Sheets at fair value, determined by reference to quoted market prices. The accounting for changes in the fair value of a derivative instrument depends on whether it has been designated and qualifies as part of a hedging relationship and, if so, the reason for holding it. Our use of derivative instruments is generally limited to cash flow hedges of certain interest rate risks and minimizing foreign currency exposure on foreign currency transactions, which are typically designated in hedging relationships, and intercompany balances, which are not designated as hedging instruments. Cash flows resulting from forward contracts are accounted for as hedges of identifiable transactions or events and classified in the same category as the cash flows from the items being hedged.

Employee Benefit Plans

Employee Benefit Plans: The measurement date for plan assets and benefit obligations is the month end closest to our fiscal year end.

Recent Accounting Pronouncements

Recent Accounting Pronouncements:

Recent Accounting Pronouncements Adopted

Standard	Description	Financial Statement Effect or Other Significant Matters
ASU no. 2023-07 Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures	This standard requires disclosure of significant segment expenses that are regularly provided to the chief operating decision maker (“CODM”) and included within each reported measure of segment profit or loss. The amendments also require disclosure of all other segment items by reportable segment and a description of its composition. Additionally, the amendments require disclosure of the title and position of the CODM and an explanation of how the CODM uses the reported measures of segment profit or loss in assessing segment performance and deciding how to allocate resources. The provisions of the standard are effective for fiscal years beginning after December 15, 2023 and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted. The amendment requires retrospective application to all prior periods presented in the financial statements.	We adopted this standard using retrospective application to all prior periods presented.
		Date adopted: Q4 2025

Recent Accounting Pronouncements Not Yet Adopted

Standard	Description	Financial Statement Effect or Other Significant Matters
ASU no. 2023-09 Income Taxes (Topic 740): Improvements to Income Tax Disclosures	This standard expands annual income tax disclosures to require specific categories in the rate reconciliation table to be disclosed using both percentages and reporting currency amounts and requires additional information for reconciling items that meet a quantitative threshold. Additionally, the amendment requires disclosure of income taxes paid by jurisdiction. The provisions of the standard are effective for fiscal years beginning after December 15, 2024. Early adoption is permitted. The amendments should be applied on a prospective basis. Retrospective application is permitted.	We are currently reviewing the guidance and evaluating the impact on our financial statements and related disclosures.
		Planned date of adoption: FY 2026
ASU no. 2024-03 Income Statement -Reporting Comprehensive Income-Expense Disaggregation Disclosures (Topic 220): Disaggregation of Income Statement Expenses	This standard requires disclosure of specified information about certain cost and expenses at each interim and annual reporting period. This includes disclosure of the amounts of purchases of inventory, employee compensation, depreciation and intangible asset for each relevant expense caption on the income statement, as well as the total amount of selling expenses. Additionally, the amendments require disclosing a qualitative description of the amounts remaining in relevant expense captions that are not separately disaggregated. The provisions of the standard are effective for fiscal years beginning after December 15, 2026 and interim periods within fiscal years beginning after December 15, 2027. Early adoption is permitted. The amendments may be applied either prospectively to financial statements issued for reporting periods after the effective date of this ASU or retrospectively to all prior periods presented in the financial statements.	We are currently reviewing the guidance and evaluating the impact on our financial statements and related disclosures.
		Planned date of adoption: FY 2028

We consider the applicability and impact of all Accounting Standard Updates ("ASU"). ASUs not listed above were assessed and determined to be either not applicable, or had or are expected to have an immaterial impact on our financial statements and related disclosures.

Reclassifications

Revision of Previously Issued Consolidated Financial Statements: During the preparation of our consolidated financial statements for the year ended September 27, 2025, management identified misstatements in previously issued consolidated financial statements and interim consolidated condensed financial statements, impacting prior periods.

The principal misstatement related to the accounting for distinct long-term aftermarket service contracts with customers in the Commercial Aircraft segment. Specifically, there were inaccurate inputs used in the total costs at completion estimate within the over-time revenue recognition calculation for these contracts that accumulated over several years. Additionally, other unrelated misstatements, including an adjustment for the understatement of certain warranty costs, were also identified.

We evaluated the nature and magnitude of all identified misstatements to assess the materiality, including quantitative and qualitative considerations and determined that the misstatements were not material, individually or in aggregate, to any previously issued quarterly or annual consolidated financial statements. However, correcting these misstatements entirely in the current period would have been material to our 2025 financial statements. As a result, within this annual report, we have revised our prior period annual consolidated financial statements for 2023 and 2024 and our quarterly consolidated condensed financial statements for 2024 and 2025 to reflect the corrections in the periods in which the misstatements originated.

Correcting the misstatement related to long-term aftermarket service contracts, which originated prior to 2023, had a cumulative impact that decreased opening Retained earnings as of October 2, 2022 by $30,920. The correction of this misstatement also increased Net sales and decreased Cost of sales for the year ended 2023 by $436 and $2,024, respectively and decreased Net sales and Cost of sales for the year ended 2024 by $200 and $8,092, respectively.

Correcting the misstatement related to warranty costs, which originated prior to 2023, had a cumulative impact that decreased opening Retained earnings as of October 2, 2022 by $8,400. The correction of this misstatement also increased Cost of sales for the year ended 2023 by $300 and decreased Cost of sales for the year ended 2024 by $1,200.

A summary of the corrections and their related impacts on each financial statement line items from our previously issued consolidated financial statements are presented in Note 25 – Revision of Previously Issued Consolidated Financial Statements.