mog-20260320

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

________________________________________________

FORM 11-K

___________________________________________

(Mark One)

ý ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended September 30, 2025

¨ TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from ________ to _________

Commission File Number: 1-5129

___________________________________________

A. Full title of the plan and the address of the plan, if different from that of the issuer named below:

MOOG INC. RETIREMENT SAVINGS PLAN

B. Name of issuer of the securities held pursuant to the plan and the address of its principal executive office:

MOOG INC.

EAST AURORA, NEW YORK 14052-0018

MOOG INC. RETIREMENT SAVINGS PLAN

FINANCIAL STATEMENTS AND SUPPLEMENTAL SCHEDULE

YEARS ENDED September 30, 2025 and 2024

TABLE OF CONTENTS



Report of Independent Registered Public Accounting Firm			1

Financial Statements:
Statements of Net Assets Available for Benefits			2
Statements of Changes in Net Assets Available for Benefits			3
Notes to Financial Statements			4-10
Supplemental Schedule:
Schedule H, Line 4a - Schedule of Delinquent Participant Contributions			11
Schedule H, Line 4i - Schedule of Assets (Held at End of Year)			12

Report of Independent Registered Public Accounting Firm

To the and the Administrative Committee and Participants of

Moog Inc. Retirement Savings Plan:

Opinion on the Financial Statements

We have audited the accompanying statement of net assets available for benefits of Moog Inc. Retirement Savings Plan (the “Plan”) as of September 30, 2025, and the related statement of changes in net assets available for benefits for the year ended September 30, 2025, and the related notes and schedules (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the net assets available for benefits of the Plan as of September 30, 2025, and the changes in net assets available for benefits for the year ended September 30, 2025, in conformity with accounting principles generally accepted in the United States of America.

Other Matter

The financial statements of Moog Inc. Retirement Savings Plan as of September 30, 2024 and for the year ended September 30, 2024 were audited by Freed Maxick, P.C. On August 1, 2025, Freed Maxick, P.C. joined with WithumSmith+Brown, P.C. Freed Maxick, P.C. expressed an unqualified opinion on those financial statements dated March 11, 2025.

Basis for Opinion

These financial statements are the responsibility of the Plan’s management. Our responsibility is to express an opinion on these financial statements based on our audit. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) ("PCAOB") and are required to be independent with respect to the Plan in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud.

Our audit included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audit also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audit provides a reasonable basis for our opinion.

Supplemental Information

The supplemental information in the accompanying schedule of assets (held at end of year) as of September 30, 2025 and schedule of delinquent participant contributions for the year ended September 30, 2025 have been subjected to audit procedures performed in conjunction with the audit of the Plan’s financial statements. The supplemental information is the responsibility of the Plan’s management. Our audit procedures included determining whether the supplemental information reconciles to the financial statements or the underlying accounting and other records, as applicable, and performing procedures to test the completeness and accuracy of the information presented in the supplemental information. In forming our opinion on the supplemental information, we evaluated whether the supplemental information, including its form and content, is presented in conformity with the Department of Labor’s Rules and Regulations for Reporting and Disclosure under the Employee Retirement Income Security Act of 1974. In our opinion, the supplemental information is fairly stated, in all material respects, in relation to the financial statements as a whole.

/s/ WithumSmith+Brown, P.C.

We have served as the Plan’s auditor since 2009.

Buffalo, New York

March 20, 2026

PCAOB ID Number 100

MOOG INC. RETIREMENT SAVINGS PLAN

STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS


	September 30,
	2025		2024
Assets:
Investments at fair value	$	1,820,488,589	$	1,647,194,422
Investments at contract value	79,796,142		83,780,317

Receivables:
Notes receivable from participants	16,108,130		14,681,980
Participant contributions	4,089,589		3,254,132
Employer contributions	2,793,228		1,571,054
	22,990,947		19,507,166

Net assets available for benefits	$	1,923,275,678	$	1,750,481,905

See accompanying Notes to Financial Statements.

MOOG INC. RETIREMENT SAVINGS PLAN

STATEMENTS OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS


	Year Ended September 30,
	2025		2024
Additions:
Participant contributions	$	79,594,130	$	77,587,934
Employer contributions	50,728,197		50,066,786
Participant rollovers	13,673,381		15,180,781
Net appreciation in fair value of investments	155,720,234		407,070,614
Interest and dividend income	24,142,808		18,117,347
	323,858,750		568,023,462

Deductions:
Distributions	150,061,902		136,402,345

Administrative expenses	1,003,075		911,831
	151,064,977		137,314,176

Net increase	172,793,773		430,709,286

Transfer from other plans	—		21,465,555

Net assets available for benefits at beginning of year	1,750,481,905		1,298,307,064
Net assets available for benefits at end of year	$	1,923,275,678	$	1,750,481,905

See accompanying Notes to Financial Statements.

MOOG INC. RETIREMENT SAVINGS PLAN

NOTES TO FINANCIAL STATEMENTS

SEPTEMBER 30, 2025 and 2024

1. Description of Plan

The following is a brief description of the Moog Inc. Retirement Savings Plan ("the Plan") and is provided for general information purposes only. Participants should refer to the Plan Document and the Summary Plan Description for complete information.

General

The Plan consists of two defined contribution options, the RSP and the RSP(+), sponsored by Moog Inc. ("the Company" or "the Plan Sponsor"). The Plan is subject to the provisions of the Employee Retirement Income Security Act of 1974, as amended ("ERISA"). The Administrative Committee is responsible for the oversight of the Plan, determines the appropriateness of the Plan's investment offerings and monitors investment performance.

Eligibility

As of September 30, 2025, all domestic employees of the Company are eligible to participate in the Plan immediately upon hire. Employees hired after January 1, 2019 are automatically enrolled in the RSP(+). Employees hired prior to January 1, 2019 were given a choice to remain in their current plan, the RSP, or participate in the RSP(+).

Plan Mergers and Transfers

During the plan year ended September 30, 2024, the Company transferred assets and merged the Genesys Aerosystems 401(k) Plan (the "Genesys Plan") into the Plan. The total fair value of the net assets transferred from the Genesys Plan into the Plan was $21,465,555.

Notes Receivable from Participants

Notes receivable from participants (loans) are measured at their unpaid principal balance plus any accrued but unpaid interest. Loans are limited to the lesser of $50,000 or one-half of the participant's account balance with a minimum loan of $1,000, repayable over a term not to exceed five years. Interest is charged at a rate established by the Plan and is fixed at origination at Prime plus 1%. Loans are secured by the balance in the participant's account. Principal and interest are paid ratably through payroll deductions. Participants pay a one-time origination fee and quarterly maintenance fees for each loan.

Contributions and Investments

The Plan allows for voluntary pretax contributions to the Plan in the form of a 1% to 75% withholding subject to the Internal Revenue Code ("IRC") limits. All employees are automatically enrolled in the Plan at a deferral of 3% of eligible employee compensation to the Plan, unless the employee elects not to make such a contribution to the Plan. Employees are also automatically enrolled in 1% annual increases up to a total deferral of 15%, unless the employee makes an affirmative election to contribute at a different rate or opt out of the automatic enrollment. The Plan also allows for Roth Elective Deferrals. Participants may designate all or a portion of deferrals as Roth Elective Deferrals. The Plan permits participants age 50 and older to make “catch-up” contributions. Contributions are directed by the participant among the available investment options.

The Plan currently offers registered investment company mutual funds, Company Class B common stock, target date funds, pooled separate accounts and a stable value fund.

1. Description of Plan (continued)

Employees hired on or after January 1, 2008 are not eligible to participate in the Company's defined benefit pension plan. Instead, the Company makes contributions ("Retirement Contributions") for those employees based on a percentage of the employee's eligible compensation and age. The Retirement Contributions are in addition to the Company match on voluntary employee contributions ("the Company Match"). Employees hired before January 1, 2008 elected either to remain in the defined benefit pension plan and continue to accrue benefits or elected to stop accruing future benefits in the defined benefit pension plan as of April 1, 2008. Employees who elected to stop accruing future benefits receive the Retirement Contributions in the Plan.

RSP

The Company's matching contribution in the RSP is 25% of the first 2% of eligible pay that employees contribute. The Company Match is invested pursuant to participant allocation elections, which may include Company Class B common stock. Retirement Contributions for the RSP are made to an employee-directed investment fund in the Plan.

RSP(+)

The Company's matching contributions in the RSP(+) are 50% of the first 10% of eligible pay that employees contribute. Retirement Contributions for the RSP(+) will be initially invested, when made, in Company Class B common stock. However, those RSP(+) Retirement Contributions may be reinvested at any time immediately thereafter pursuant to the Participant's instructions.

The Plan also provides that the Company may make discretionary contributions. For the plan years ended September 30, 2025 and 2024, the Company did not elect to make any discretionary contributions.

Rollovers represent amounts contributed to the Plan by participants from prior employer plans.

Participant Accounts

Separate accounts are maintained for each plan participant. Each participant's account is credited with the participant's contribution, Retirement Contributions, Company Match and discretionary contributions, if applicable. Plan earnings, losses and fees of the participant's investment selections are reported in the participant's account as defined by the Plan. For participants in the RSP and RSP(+) hired prior to January 1, 2020, participant contributions and Company Match are fully and immediately vested in the participant accounts. For participants in the RSP(+) hired on or after January 1, 2020, participant contributions are fully and immediately vested in the participants account and the Company Match is fully vested after three years of credited service, which is defined as 1,000 hours of service in a plan year. For both the RSP and RSP(+), the Retirement Contributions vest 100% after three years of credited service. Forfeitures are used to first reduce employer contributions, second to offset Plan expenses and lastly reallocated to remaining participants. The benefit to which a participant is entitled is the benefit that can be provided from the participant's account. Participants may transfer all or part of their accounts, including investments in Company stock, among the other investment options in the Plan.

Distributions

Subject to certain limitations, participants may withdraw all or part of their account balance upon attainment of age 59½. Distribution of a participant's account balance is also permitted in the event of death, disability, termination of employment or immediate financial hardship, as defined in the Plan Document. Distributions are required to begin at age 72. Distributions are made in cash except for the Company Match, which can be distributed in cash or shares. Participants have the option to also receive the distributions in employer securities in either cash or shares. For distributions of Company Class B common stock from the employer securities funds and matching account balances (for shares purchased after January 1, 1999), the shares of stock will carry a restrictive legend and the Company will have a right of first refusal at the time of sale, transfer or pledging of those shares.

1. Description of Plan (continued)

Administrative Expenses

Certain costs of administering the Plan are borne by the Company, while others are borne by the Plan. Fees borne by the Plan include investment management fees and recordkeeping fees. Loan origination fees are charged to the participant's account balance at the time the loan is processed. Investment management fees are allocated to all participants invested in the fund that charges the fee on a pro rata basis of account balances. Recordkeeping fees are only charged to participants that meet the minimum balance criteria.

2. Summary of Significant Accounting Policies

Basis of Accounting

The financial statements are presented on the accrual basis of accounting in accordance with accounting principles generally accepted in the United States of America ("US GAAP").

Reclassification

Certain amounts in the prior year financial statements have been reclassified to conform with the current year presentation. These reclassifications had no effect on net assets available for benefits or changes therein.

Use of Estimates

The preparation of financial statements in conformity with US GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.

Valuation of Investments and Income Recognition

Investments are reported at fair value, except for the fully benefit-responsive investment contract, which is reported at contract value. Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. For additional information, refer to Note 3, Fair Value. Contract value is the amount participants would receive if they were to initiate permitted transactions under the terms of the Plan attributable to fully benefit-responsive investment contracts. For additional information, refer to Note 6, Investment in Insurance Contract.

Purchases and sales of securities are recorded on a trade date basis. Net appreciation in fair value of investments includes the Plan's gains and losses on investments bought and sold as well as held during the year. Dividends are recorded on the ex-dividend date. Interest income is recorded on an accrual basis.

Risks and Uncertainties

The Plan invests in various investment securities. Investment securities are exposed to various risks such as interest rate, market and credit risks. Due to the level of risk associated with certain investment securities, it is at least reasonably possible that changes in the values of investment securities will occur in the near term and that such changes could materially affect participants' account balances and the amounts reported in the Statements of Net Assets Available for Benefits.

Payment of Benefits

Benefits are recorded when paid.

3. Fair Value

Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Depending on the nature of the asset or liability, various techniques and assumptions can be used to estimate fair value. The definition of the fair value hierarchy is as follows:

Level 1 - Quoted prices in active markets for identical assets and liabilities.

Level 2 - Observable inputs other than quoted prices in active markets for similar assets and liabilities.

Level 3 - Inputs for which significant valuation assumptions are unobservable in a market and therefore value is based on the best available data, some of which is internally developed and considers risk premiums that a market participant would require.

The following is a description of the valuation methodologies used for assets measured at fair value. There have been no changes to the methodologies used at September 30, 2025 and 2024.

The Plan's assets are invested in shares of registered investment companies, employer securities, common collective trust funds, pooled separate accounts and an investment in insurance contract (reported at contract value).

Shares of registered investment companies: Consists of both equity and fixed income mutual funds. Valued at quoted market prices that represent the net asset value ("NAV") of shares held by the Plan at year end.

Employer securities: Certain assets of the Plan are invested in employer securities through a unitized stock fund, which includes Company Class B common stock and investments in a money market fund for liquidity purposes. Employer securities are valued at the closing price reported on the New York Stock Exchange. Money market funds are stated at cost, which approximates fair value.

Common collective trust funds: Consist of pools of investments used by institutional investors to obtain exposure to equity and fixed income markets. Common collective trust funds held by the Plan invest in target date funds. Shares held in common collective trusts are reported at the NAV of units held at year end. The NAV is determined by the total value of fund assets divided by the total number of units of the fund owned.

Pooled separate accounts: Assets of each separate account are pooled with the funds of other investors and invested in stocks, bonds, mutual funds or collective trusts. Shares held in pooled separate accounts are reported at the NAV of units held at year end. The NAV is determined by the total value of fund assets divided by the total number of units of the fund owned.

3. Fair Value (continued)

The following tables present the fair values and classification of the Plan's investments measured on a recurring basis as of September 30, 2025 and 2024:


	Assets at Fair Value as of September 30, 2025:
	Level 1		Level 2		Level 3		Total
Shares of registered investment companies	$	465,845,573	$	—	$	—	$	465,845,573
Employer securities	369,929,005		—		—		369,929,005
Total investments in fair value hierarchy	835,774,578		—		—		835,774,578
Investments measured at NAV practical expedient (1)							984,714,011
Total investments at fair value	$	835,774,578	$	—	$	—	$	1,820,488,589



	Assets at Fair Value as of September 30, 2024:
	Level 1		Level 2		Level 3		Total
Shares of registered investment companies	$	407,789,960	$	—	$	—	$	407,789,960
Employer securities	360,752,153		—		—		360,752,153
Total investments in fair value hierarchy	768,542,113		—		—		768,542,113
Investments measured at NAV practical expedient (1)							878,652,309
Total investments at fair value	$	768,542,113	$	—	$	—	$	1,647,194,422

(1) Certain investments that are measured at fair value using the NAV per share (or its equivalent) practical expedient have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the Statements of Net Assets Available for Benefits.

The following table summarizes investments measured at fair value based on NAV per share as of September 30, 2025 and 2024:


	Fair Value as of September 30,				Unfunded Commitments		Redemption Frequency	Redemption Notice Period
	2025		2024
Common collective trusts	$	864,943,381	$	776,050,044	$	—	Daily	None
Pooled separate accounts	119,770,630		102,602,265		—		Daily	None
Total	$	984,714,011	$	878,652,309	$	—

4. Income Tax Status

The Internal Revenue Service ("IRS") has determined and informed the Plan Sponsor by a letter dated January 8, 2018, that the Plan and related trust are designed in accordance with applicable sections of the IRC; therefore, the related trust is exempt from taxation. The Plan is required to operate in conformity with the IRC to maintain its qualification. Although the Plan has been amended since receiving this favorable determination letter, the Plan administrator and the Plan's tax counsel believe that the Plan is being operated in compliance with the applicable requirements of the IRC and, therefore, believe that the Plan, as amended, is qualified and the related trust is tax-exempt.

US GAAP requires Plan management to evaluate tax positions taken by the Plan and recognize a tax liability (or asset) if the Plan has taken an uncertain position that more likely than not would not be sustained upon examination by the IRS. The Plan administrator has analyzed the tax positions taken by the Plan and has concluded that as of September 30, 2025, there are no uncertain positions taken or expected to be taken that would require recognition of a liability (or asset) or disclosure in the financial statements. The Plan is subject to routine audits by taxing jurisdictions; however, there are currently no audits for any tax periods in progress.

5. Plan Termination

Although it has not expressed intent to do so, the Company has the right under the Plan to discontinue its contributions at any time and to terminate the Plan subject to the provisions of ERISA. In the event of plan termination, participants will become 100% vested in their accounts. If such termination were to occur, the Company will instruct the trustee to either continue the management of the trust's assets or liquidate the trust and distribute the assets to the participants in accordance with the Plan Document.

6. Investment in Insurance Contract

New York Life Insurance Company Anchor Account IV

The Plan has a group annuity contract with New York Life Insurance Company ("New York Life") to invest in the New York Life Anchor Account ("Anchor Account"). The Anchor Account is a stable value fund held in a pooled separate account that invests primarily in a diversified and conservative array of fixed income securities and cash equivalent investments, which are owned and managed by New York Life. The Anchor Account is credited with earnings on the underlying investments and charged for participant withdrawals and administrative expenses. New York Life is contractually obligated to repay the principal and accumulated interest that is guaranteed to the Plan. The interest crediting rate is reset semi-annually and the minimum interest crediting rate is zero.

The group annuity contract is fully benefit-responsive and is reported at contract value in the Statements of Net Assets Available for Benefits. Benefit responsiveness is defined as the extent to which a contract’s terms and the Plan permit or require participant-initiated withdrawals at contract value. Contract value, as reported to the Plan by New York Life, represents contributions made under each contract, plus earnings, less participant withdrawals and administrative expenses. As described in Note 2, contract value is the relevant measurement attribute for this Fund.

Certain events may limit the ability of the Plan to transact at contract value with the investment contract issuer. Such events include the following: (1) certain distributions resulting from employer-initiated events (including plan termination, bankruptcy and lay-offs); (2) termination by the contract holder if the contract holder fails to provide 12 months advance written notice of termination; or (3) termination by issuer due to loss of the Plan's qualified status. The Plan does not believe that any events which would limit the Plan's ability to transact at contract value with participants are probable of occurring. There are no reserves against contract value for credit risk of the contract issuer or otherwise.

7. Related Party and Party in Interest Transactions

Participants of the Plan may elect to invest in Company Class B common stock within the Moog Inc. Common Stock Fund. Moog Inc. is the Plan Sponsor. Additionally, Plan investments include accounts with Empower Life & Annuity Insurance Company of New York which is affiliated with Empower Trust Company, LLC, the Plan trustee. Therefore, transactions with these investments represent party in interest transactions.

8. Prohibited Transactions

The Plan inadvertently failed to deposit $9,651 of participant deferrals within the required time frame as stated by United States Department of Labor ("DOL") regulations. The Company corrected the errors involving delinquent contributions by contributing the amounts to the Plan (with additional earnings), filing a Form 5330 and paying the applicable excise tax to the Internal Revenue Service during 2025. The excise tax payments are made from the Company’s assets and not the assets of the Plan.

MOOG INC. RETIREMENT SAVINGS PLAN

EIN #16-0757636 Plan #002

Schedule H, Line 4a – Schedule of Delinquent Participant Contributions

September 30, 2025

Year

Participant Contributions Transferred Late to Plan

Includes Late Participant Loan Repayments

Contributions Not Corrected

Contributions Corrected Outside VFCP

Contributions Pending Correction in VFCP

2025

Yes

—

9,651

—

MOOG INC. RETIREMENT SAVINGS PLAN

EIN #16-0757636 Plan #002

Schedule H, Line 4i – Schedule of Assets

(Held at End of Year)

September 30, 2025

Identity of Issuer

Description

Current Value

Vanguard Institutional Index Instl Pl

Mutual Fund

156,586,683

Vanguard Total Intl Stock Index I

Mutual Fund

47,348,613

Vanguard Total Bond Market Index Institutional

Mutual Fund

46,720,874

Vanguard Small Cap Index I

Mutual Fund

42,376,677

Vanguard Mid Cap Index Institutional

Mutual Fund

38,275,074

Vanguard Windsor Admiral

Mutual Fund

36,440,099

Pimco Income Instl

Mutual Fund

31,071,405

T Rowe Price Integrated U.S. Small-Cap Growth Equity Inv

Mutual Fund

21,025,326

MFS Mid Cap Growth Class R6

Mutual Fund

15,286,697

Pimco Real Return Instl

Mutual Fund

11,617,364

JPMorgan Small Cap Value R6

Mutual Fund

9,956,523

Victory Sycamore Established Value R6

Mutual Fund

9,140,238

Shares of Registered Investment Companies

465,845,573

Moog Inc.

Class B Common Stock

369,929,005

Employer Securities

369,929,005

BlackRock Lifepath Index 2030 Fund O

Target Date Fund

133,085,088

BlackRock Lifepath Index 2035 Fund O

Target Date Fund

126,232,864

BlackRock Lifepath Index 2040 Fund O

Target Date Fund

102,082,009

BlackRock Lifepath Index 2045 Fund O

Target Date Fund

99,275,642

BlackRock Lifepath Index 2050 Fund O

Target Date Fund

92,442,041

BlackRock Lifepath Index 2055 Fund O

Target Date Fund

69,681,551

BlackRock Lifepath Index 2060 Fund O

Target Date Fund

33,280,965

BlackRock Lifepath Index 2065 Fund O

Target Date Fund

15,014,912

BlackRock Lifepath Index Retirement Fund O

Target Date Fund

193,848,309

Common Collective Trusts

864,943,381

Large Cap Growth JPMorgan Investment Management Fund

Pooled Separate Account

94,960,318

Capital Group Europacific Growth SA

Pooled Separate Account

24,810,312

Pooled Separate Accounts

119,770,630

New York Life Ins Co Anchor Account IV

Stable Value Fund

79,796,142

Investment in Insurance Contract

79,796,142

Participant loans

Loans maturing at various dates through January 8, 2031 and bearing interest at rates ranging from 4.25% to 9.50%

16,108,130

Total Investments

1,916,392,861

Denotes a party-in-interest

EXHIBIT INDEX


Exhibit			Description
23.1			Consent of Freed Maxick P.C.
23.2			Consent of WithumSmith+Brown, P.C.

SIGNATURE

The Plan. Pursuant to the requirements of the Securities Exchange Act of 1934, the trustees (or other persons who administer the employee benefit plan) have duly caused this annual report to be signed on its behalf by the undersigned hereunto duly authorized.


			MOOG INC. RETIREMENT SAVINGS PLAN

Date: March 20, 2026			/s/ Paul Wilkinson
			Paul Wilkinson
			Plan Administrator

SEC Form 11-K filed by Moog Inc.