0001628280-26-044870 | 11-K | XBRL Viewer | Westinghouse AIR Brake Technologies Corp

SUBSEQUENT EVENTS	12 Months Ended
Dec. 31, 2025
EBP 004
EBP, Subsequent Event [Line Items]
SUBSEQUENT EVENTS	SUBSEQUENT EVENTS On December 6, 2024, Wabtec completed the acquisition of Bloom Engineering, Inc. Effective January 22, 2026, the assets of the Bloom Engineering, Inc. 401(k) Plan (the " Bloom Plan") were transferred into the Plan at a total fair value of $30,458,429. Effective January 1, 2026, former participants of the Bloom Plan became participants in the Plan. On July 1, 2025, Wabtec completed the acquisition of Evident's Inspection Technologies division ("Inspection Technologies"). Effective January 30, 2026, the assets of the Inspection Technologies 401(k) Plan (the "Inspection Technologies Plan") were transferred into the Plan at a total fair value of $14,969,758. Effective January 1, 2026, former participants of the Inspection Technologies Plan became participants in the Plan.

DESCRIPTION OF PLAN (Details) - EBP 004 - USD ($)	12 Months Ended
DESCRIPTION OF PLAN (Details) - EBP 004 - USD ($)	Dec. 31, 2025	Dec. 31, 2024
EBP, Description of Plan [Line Items]
Automatic deferral rate	3.00%
EBP, Participant Contribution, Pretax And After Tax, Maximum Annual Compensation to Total Compensation, Percentage	50.00%
Participant compensation matched, percentage	3.00%
Matching percentage	100.00%
Rollovers	$ 11,371,665
EBP, Participant Contribution, Maximum Account Allocation For Investments, Percentage	20.00%
EBP, Participant Contribution, Maximum Future Contributions For Investments, Percentage	20.00%
Maximum borrowing, to total account, percentage	50.00%
Maximum borrowing, amount	$ 50,000
Contribution vesting percentage	100.00%
Vesting period	3 years
Forfeited nonvested account, decrease from employer contribution	$ 2,713,983
Forfeited nonvested account	$ 4,204,884	$ 3,220,291
EPB, Pre-Tax, Roth, After-Tax, And Rollover Contributions
EBP, Description of Plan [Line Items]
Contribution vesting percentage	100.00%
Minimum
EBP, Description of Plan [Line Items]
Pretax, maximum annual compensation to total compensation, percentage	1.00%
EBP, Participant Contribution, After Tax, Maximum Annual Compensation to Total Compensation, Percentage	1.00%
EBP, Asset Held for Investment, Participant Loan, Interest Rate	3.25%
Maximum
EBP, Description of Plan [Line Items]
Pretax, maximum annual compensation to total compensation, percentage	50.00%
EBP, Participant Contribution, After Tax, Maximum Annual Compensation to Total Compensation, Percentage	50.00%
EBP, Asset Held for Investment, Participant Loan, Interest Rate	10.50%

SCHEDULE H, LINE 4i – SCHEDULE OF ASSETS (HELD AT END OF YEAR)

12 Months Ended

Dec. 31, 2025

EBP 004

EBP, Schedule of Asset Held for Investment [Line Items]

SCHEDULE H, LINE 4i – SCHEDULE OF ASSETS (HELD AT END OF YEAR)

WABTEC SAVINGS PLAN

PLAN NUMBER 004

EMPLOYER IDENTIFICATION NUMBER 25-1615902

SCHEDULE H, LINE 4i – SCHEDULE OF ASSETS (HELD AT END OF YEAR)

DECEMBER 31, 2025


Identity of Issuer	Description of Asset	Fair Value
Fidelity	Fidelity Blue Chip Growth Commingled Pool*	$	305,493,892
Fidelity	Fidelity 500 Index Fund *	189,911,465
Fidelity	Fidelity Freedom 2035 Fund K6 *	148,261,954
Fidelity	Fidelity Freedom 2030 Fund K6 *	134,269,082
Fidelity	Fidelity Freedom 2040 Fund K6 *	121,160,135
Fidelity	Fidelity Freedom 2045 Fund K6 *	90,242,407
Fidelity	Fidelity Freedom 2050 Fund K6 *	84,336,447
Fidelity	Fidelity Freedom 2025 Fund K6 *	71,552,033
Wabtec	Wabtec Stock Fund *	65,612,036
Fidelity	Fidelity Managed Income Portfolio II Class II *	65,550,901
Fidelity	Fidelity Freedom 2055 Fund K6 *	63,536,388
Fidelity	Brokeragelink *	48,560,404
Vanguard	Mid Cap Index Fund	47,733,955
Vanguard	Equity Income Fund Admiral	43,977,864
Wabtec Savings Plan	Participant Loan Fund* (interest rates range from 3.25% to 10.5%)	37,595,443
Allspring	Allspring Core Bond E1	35,351,598
Vanguard	Total International Stock Index Fund	31,509,327
Fidelity	Fidelity Freedom 2060 Fund K6 *	30,215,428
Vanguard	Total Bond Market Index Fund	27,736,745
Fidelity	Fidelity Freedom 2020 Fund K6 *	23,312,682
Fidelity	Fidelity Overseas Fund K *	22,607,960
Fidelity	Fidelity® Small Cap Growth K6 Fund *	22,130,786
Fidelity	Fidelity Small Cap Index *	19,715,192
Vanguard	Emerging Markets Stock Index Fund	17,642,107
BlackRock	BlackRock High Yield Portfolio Fund K	15,349,340
Fidelity	Fidelity Low-Priced Stock K6 Fund *	13,534,835
Capital Research and Management Company	American Funds EuroPacific Fund Class R6	12,858,293
Fidelity	Fidelity Freedom 2065 Fund K6 *	12,801,345
Fidelity	Fidelity Freedom 2015 Fund K6 *	11,203,840
Allspring	Allspring Special Mid Cap Value Fund - Class R6	9,448,085
Fidelity	Fidelity Freedom Retire Fund K6 *	5,613,684
Fidelity	Fidelity Freedom 2010 Fund K6 *	3,792,511
Fidelity	Fidelity Freedom 2070 Fund K6 *	1,309,114
Fidelity	Fidelity Money Market Trust Retirement Government Money Market II *	1,243,856
		$	1,835,171,134

* Offered by an issuer considered to be a party-in-interest.

PARTY-IN-INTEREST TRANSACTIONS (Details) - EBP 004 - Shares of registered investment companies - EBP, Trustee	12 Months Ended
	Dec. 31, 2025 USD ($)
EBP, Related Party and Party-in-Interest Transactions [Line Items]
Professional, legal, and accounting fees	$ 466,648
Revenue used to offset expenses	169,212
Recordkeeping expenses and fees	1,313,801
Investment income	242,380,563
Interest income	$ 3,124,442

FAIR VALUE MEASUREMENT (Details) - EBP 004 - USD ($)	Dec. 31, 2025	Dec. 31, 2024
EBP, Investment, Fair Value and NAV [Line Items]
Assets	$ 1,797,575,691	$ 1,515,623,350
Employer securities
EBP, Investment, Fair Value and NAV [Line Items]
Assets	65,612,036	62,406,217
Self-directed brokerage
EBP, Investment, Fair Value and NAV [Line Items]
Assets	48,560,404	34,916,470
Total
EBP, Investment, Fair Value and NAV [Line Items]
Assets	1,797,575,691	1,515,623,350
Total \| Shares of registered investment companies
EBP, Investment, Fair Value and NAV [Line Items]
Assets	1,312,358,458	1,074,390,682
Total \| Employer securities
EBP, Investment, Fair Value and NAV [Line Items]
Assets	65,612,036	62,406,217
Total \| Self-directed brokerage
EBP, Investment, Fair Value and NAV [Line Items]
Assets	48,560,404	34,916,470
Total \| Other investments
EBP, Investment, Fair Value and NAV [Line Items]
Assets	371,044,793	343,909,981
Level 1
EBP, Investment, Fair Value and NAV [Line Items]
Assets	1,426,530,898	1,171,713,369
Level 1 \| Shares of registered investment companies
EBP, Investment, Fair Value and NAV [Line Items]
Assets	1,312,358,458	1,074,390,682
Level 1 \| Employer securities
EBP, Investment, Fair Value and NAV [Line Items]
Assets	65,612,036	62,406,217
Level 1 \| Self-directed brokerage
EBP, Investment, Fair Value and NAV [Line Items]
Assets	48,560,404	34,916,470
Level 1 \| Other investments
EBP, Investment, Fair Value and NAV [Line Items]
Assets	0	0
NAV
EBP, Investment, Fair Value and NAV [Line Items]
Assets	371,044,793	343,909,981
NAV \| Shares of registered investment companies
EBP, Investment, Fair Value and NAV [Line Items]
Assets	0	0
NAV \| Employer securities
EBP, Investment, Fair Value and NAV [Line Items]
Assets	0	0
NAV \| Self-directed brokerage
EBP, Investment, Fair Value and NAV [Line Items]
Assets	0	0
NAV \| Other investments
EBP, Investment, Fair Value and NAV [Line Items]
Assets	$ 371,044,793	$ 343,909,981

SCHEDULE H, LINE 4i – SCHEDULE OF ASSETS (HELD AT END OF YEAR) (Details) - EBP 004	12 Months Ended
	Dec. 31, 2025 USD ($)
EBP, Schedule of Asset Held for Investment [Line Items]
Entity tax identification number	25-1615902
Plan number	004
Total Investments, at Fair Value
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	$ 1,835,171,134
Investment, Identifier [Axis]: Allspring Core Bond E1
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	35,351,598
Investment, Identifier [Axis]: Allspring Special Mid Cap Value Fund - Class R6
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	9,448,085
Investment, Identifier [Axis]: American Funds EuroPacific Fund Class R6
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	12,858,293
Investment, Identifier [Axis]: BlackRock High Yield Portfolio Fund K
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	15,349,340
Investment, Identifier [Axis]: Brokeragelink
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	48,560,404
Investment, Identifier [Axis]: Emerging Markets Stock Index Fund
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	17,642,107
Investment, Identifier [Axis]: Equity Income Fund Admiral
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	43,977,864
Investment, Identifier [Axis]: Fidelity 500 Index Fund
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	189,911,465
Investment, Identifier [Axis]: Fidelity Blue Chip Growth Commingled Pool
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	305,493,892
Investment, Identifier [Axis]: Fidelity Freedom Retire Fund K6
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	5,613,684
Investment, Identifier [Axis]: Fidelity Freedom 2010 Fund K6
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	3,792,511
Investment, Identifier [Axis]: Fidelity Freedom 2015 Fund K6
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	11,203,840
Investment, Identifier [Axis]: Fidelity Freedom 2020 Fund K6
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	23,312,682
Investment, Identifier [Axis]: Fidelity Freedom 2025 Fund K6
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	71,552,033
Investment, Identifier [Axis]: Fidelity Freedom 2030 Fund K6
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	134,269,082
Investment, Identifier [Axis]: Fidelity Freedom 2035 Fund K6
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	148,261,954
Investment, Identifier [Axis]: Fidelity Freedom 2040 Fund K6
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	121,160,135
Investment, Identifier [Axis]: Fidelity Freedom 2045 Fund K6
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	90,242,407
Investment, Identifier [Axis]: Fidelity Freedom 2050 Fund K6
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	84,336,447
Investment, Identifier [Axis]: Fidelity Freedom 2055 Fund K6
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	63,536,388
Investment, Identifier [Axis]: Fidelity Freedom 2060 Fund K6
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	30,215,428
Investment, Identifier [Axis]: Fidelity Freedom 2065 Fund K6
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	12,801,345
Investment, Identifier [Axis]: Fidelity Freedom 2070 Fund K6
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	1,309,114
Investment, Identifier [Axis]: Fidelity Managed Income Portfolio II Class II
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	65,550,901
Investment, Identifier [Axis]: Fidelity Money Market Trust Retirement Government Money Market II
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	1,243,856
Investment, Identifier [Axis]: Fidelity Overseas Fund K
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	22,607,960
Investment, Identifier [Axis]: Fidelity Small Cap Index
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	19,715,192
Investment, Identifier [Axis]: Fidelity Low-Priced Stock K6 Fund
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	13,534,835
Investment, Identifier [Axis]: Fidelity® Small Cap Growth K6 Fund
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	22,130,786
Investment, Identifier [Axis]: Mid Cap Index Fund
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	47,733,955
Investment, Identifier [Axis]: Participant Loan Fund* (interest rates range from 3.25% to 10.5%)
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	37,595,443
Investment, Identifier [Axis]: Total Bond Market Index Fund
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	27,736,745
Investment, Identifier [Axis]: Total International Stock Index Fund
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	31,509,327
Investment, Identifier [Axis]: Wabtec Stock Fund
EBP, Schedule of Asset Held for Investment [Line Items]
Fair Value	$ 65,612,036

FAIR VALUE MEASUREMENT (Tables)

12 Months Ended

Dec. 31, 2025

EBP 004

EBP, Investment, Fair Value and NAV [Line Items]

EBP, Investment, Fair Value and NAV

The following table sets forth by level, within the fair value hierarchy, the Plan’s assets at fair value as of December 31, 2025 and 2024.


			December 31, 2025
Assets	Total		Level 1		NAV
Shares of registered investment companies	$	1,312,358,458	$	1,312,358,458	$	—
Employer securities	65,612,036		65,612,036		—
Self-directed brokerage funds	48,560,404		48,560,404		—
Common collective trusts (a)	371,044,793		—		371,044,793
Total	$	1,797,575,691	$	1,426,530,898	$	371,044,793


			December 31, 2024
Assets	Total		Level 1		NAV
Shares of registered investment companies	$	1,074,390,682	$	1,074,390,682	$	—
Employer securities	62,406,217		62,406,217		—
Self-directed brokerage funds	34,916,470		34,916,470		—
Common collective trusts (a)	343,909,981		—		343,909,981
Total	$	1,515,623,350	$	1,171,713,369	$	343,909,981

(a)In accordance with FASB ASC 820-10, certain investments that are measured at fair value using 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 line items presented in the Statements of Net Assets Available for Benefits.

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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+ Details

- Definition

Tabular disclosure of fair value of investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)), including, but not limited to, fair value measured at net asset value per share as practical expedient (NAV).

+ References

+ Details

STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS - EBP 004 - USD ($)	Dec. 31, 2025	Dec. 31, 2024
Investments, at fair value:
Investments at fair value:	$ 1,797,575,691	$ 1,515,623,350
Receivables:
Notes receivable from participants	37,595,443	34,478,809
Employer contributions receivable	25,083,599	29,204,672
Employee contributions receivable		2,277,955
Receivables:	62,679,042	65,961,436
Net assets available for benefits	1,860,254,733	1,581,584,786
Employer securities
Investments, at fair value:
Investments at fair value:	65,612,036	62,406,217
Self-directed brokerage
Investments, at fair value:
Investments at fair value:	48,560,404	34,916,470
Other investments
Investments, at fair value:
Investments at fair value:	$ 1,683,403,251	$ 1,418,300,663

DESCRIPTION OF PLAN	12 Months Ended
DESCRIPTION OF PLAN	Dec. 31, 2025
EBP 004
EBP, Description of Plan [Line Items]
DESCRIPTION OF PLAN	DESCRIPTION OF PLAN The following description of the Wabtec Savings Plan (the “Plan”) provides only general information. Participants should refer to the Plan document and Summary Plan Description for a more complete description of the Plan’s provisions. General The Plan, effective March 9, 1990, amended and restated effective January 1, 2022, is a contributory plan intended to comply with the provisions of Sections 401(a), 401(k) and 401(m) of the Internal Revenue Code (the “Code”). Except for certain collectively bargained employees as described below, all regular United States employees of Westinghouse Air Brake Technologies Corporation and its subsidiaries (“Wabtec” or the “Company”) are eligible to participate upon their hire date. Subject to the terms of applicable collective bargaining agreements, collectively bargained employees in Greensburg, Pennsylvania are eligible to participate in the Plan upon their hire date, but those hired before October 1, 2004 are not eligible for employer contributions. Generally, former employees of companies acquired by Wabtec, who become employees of Wabtec or its affiliates immediately upon the completion of the acquisition, and who otherwise meet the general eligibility requirements of the Plan are eligible to participate in the Plan. A committee appointed by Wabtec’s Board of Directors or its authorized delegates (the “Committee”) is responsible for the administration and operation of the Plan. In this capacity, the Committee selects and monitors the Plan’s investment options and otherwise takes such steps as may be necessary and appropriate for the effective administration of the Plan. Contributions Participants may contribute, through payroll deductions, employee elective pre-tax and after-tax “Roth” contributions from 1% to 50% of their eligible compensation, subject to the current Code limit which was $23,500 for 2025. New eligible employees are automatically enrolled in the Plan with 3% of eligible compensation contributed to the Plan as employee pre-tax contributions, unless such employees elect a different contribution percentage or elect not to contribute. This automatic enrollment provision does not apply to certain employee groups such as certain collectively bargained employees. In addition, participants may contribute employee after-tax contributions from 1% to 50% of their compensation. Participants who are 50 years of age or older during the plan year may contribute additional pre-tax or Roth catch up contributions, up to $7,500 in 2025. Participants’ total annual contributions may not exceed the contribution limits under Section 415(c) of the Code. In addition, the combination of an employee’s elective pre-tax, Roth and after-tax contributions may not exceed 50% of their eligible compensation. Active participants are able to convert all or a portion of their vested account balance in the Plan into after-tax Roth contributions. For those participants that are eligible, the Company makes an annual basic contribution of 3% of a participant’s eligible compensation, with the general requirement that the Company employs the participant on the last work day of the year for which the basic contribution is made. In addition, the Company will match 100% of the participant’s pre-tax, Roth and/or after-tax contributions to the Plan up to a total of 3% of eligible compensation. Different levels of annual basic contributions and matching contributions may apply to certain collectively bargained employees. Participants may elect to roll over account balances from other eligible retirement plans in accordance with the Code. Rollover contributions are included within Employee contributions on the Statement of Changes in Net Assets Available for Benefits. For the year ended December 31, 2025, rollovers from other qualified plans totaled $11,371,665. The Plan allows participants to direct their contributions, and contributions made on their behalf, to any of the investment alternatives offered under the Plan, which includes a self-directed brokerage account through which participants can access a broad range of mutual funds not offered directly through the Plan. The Plan permits participants to invest in Wabtec common stock. The Plan limits participants’ investments in Wabtec common stock such that (1) participants with more than 20% of their account invested in Wabtec common stock may not elect to transfer additional portions of their account into Wabtec common stock, and (2) participants may not elect to invest more than 20% of their future contributions to the Plan (or future contributions made to the Plan on their behalf by Wabtec) in Wabtec common stock. Contributions receivable as of December 31, 2025, include contributions from Wabtec and Wabtec employees that were due to the Plan but had not yet been deposited into the Plan's assets by December 31, 2025. Withdrawals Participants may make the following types of withdrawals: In-Service Withdrawals – Once every six months, a participant may withdraw all or any portion of his or her account attributable to employee after-tax contributions or rollover contributions. Once every six months, a participant may withdraw the vested portion of his or her account attributable to employer matching, or employer basic contributions contributed to the Plan before October 1, 2016. Once a participant has reached age 59½, he or she can withdraw any portion of his or her vested account. Hardship Withdrawals – In the case of hardship, as defined in the plan document, the participant can elect to withdraw up to 100% of his or her account attributable to employee elective or Roth contributions. Hardship withdrawals are limited to once in any six-month period. Notes Receivable from Participants Notes receivable from participants (loans) are measured at their unpaid principal balance plus any accrued but unpaid interest. Interest income is recorded on the accrual basis. Related fees are recorded as administrative expenses and are expensed when they are incurred. Delinquent participant loans are reclassified as distributions based upon the terms of the plan document. A participant may borrow from his or her fund accounts a maximum loan amount equal to the lesser of 50% of the value of the participant’s vested balance of his or her account, reduced by any outstanding loan balance, or $50,000. The loans bear interest based on the Reuters Prime Rate adjusted periodically, plus one percent. The interest rates on participant loans as of December 31, 2025, range from 3.25% to 10.50%. Principal and interest are paid ratably through payroll deductions. Participant Accounts Each participant’s account is credited with the participant’s contributions and allocations of (a) the Company’s contribution and (b) Plan earnings which may be charged with an allocation of administrative expenses and other applicable Plan expenses (such as for initiating a Plan loan). The benefit to which a participant is entitled is the benefit that can be provided from the participant’s vested account. Plan Termination Although it has not expressed any intent to do so, the Company has the right under the Plan to discontinue its contributions at any time as well as terminate the Plan subject to the provisions of the Employee Retirement Income Security Act of 1974 (“ERISA”). In the event the Plan is terminated, the Company will direct either (a) that the investment manager and trustee continue to hold the participants’ accounts in accordance with the Plan, or (b) that the investment manager and trustee immediately distribute to each participant all amounts in the participant’s account in a single lump-sum payment. In the event of Plan termination, participants would become 100% vested in their employer contributions. Vesting Employee pre-tax, Roth, after-tax and rollover contributions are at all times 100% vested and non-forfeitable. Plan participants become 100% vested in employer contributions after three years of service as described in the Plan document. Special vesting rules may apply to amounts held on behalf of certain union employees and on amounts transferred into the Plan from another qualified retirement plan. Forfeitures Amounts forfeited by participants are used to reduce employer contributions or if the employer has made such contributions in full, to pay the Plan's administrative expenses. Forfeitures used to reduce employer contributions and pay plan administrative expenses during the year ended December 31, 2025 amounted to $2,713,983. As of December 31, 2025, the amount in the forfeited non-vested accounts totaled $4,204,884 ($3,220,291 as of December 31, 2024).

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) - EBP 004	12 Months Ended
	Dec. 31, 2025
EBP, Accounting Policy [Line Items]
Basis of Accounting	Basis of Accounting The accounts of the Plan are maintained on the accrual basis of accounting in accordance with accounting principles generally accepted in the United States of America (US GAAP). Certain prior year amounts have been reclassified, where necessary, to conform to the current year presentation.
Accounting Estimates	Accounting Estimates The process of preparing financial statements in conformity with US GAAP requires management to use estimates and assumptions that affect certain types of assets, liabilities and changes therein. Such estimates primarily relate to unsettled transactions and events as of the date of the financial statements. Accordingly, actual results may differ from estimated amounts.
Investment Valuation and Income Recognition	Investment Valuation and Income Recognition Investments are reported at fair 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. The Plan’s Committee determines the Plan’s valuations policies utilizing information provided by the investment advisers and custodian. See Note 3 for a discussion of fair value measurements. Purchases and sales of securities are recorded on a trade-date basis. Interest income is recorded on an accrual basis. Dividends are recorded on the ex-dividend date. Realized gain on investment transactions includes the Plan's gains and losses on investments bought and sold during the year. Net appreciation in fair value of investments includes the Plan's gains and losses on investments held during the year.
Payment of Benefits	Payment of Benefits Benefits are recorded when paid.
Expenses	Expenses Certain expenses of maintaining the Plan are paid by the Plan, unless otherwise paid by the Company. Expenses that are paid by the Company are excluded from these financial statements. Fees related to the administration of notes receivable from participants are charged directly to the participant’s account and are included in administrative expenses.
Income Taxes	Income Taxes The Plan has received a favorable determination letter dated August 24, 2022 stating that the Plan is qualified under Section 401(a) of the Code and, therefore, the related trust is exempt from taxation. This determination letter applies to all amendments dated through June 23, 2021. Once qualified, the Plan is required to operate in conformity with the Code to maintain its qualification. Since the June 23, 2021 amendment, the Plan has been restated and amended, but the plan administrator believes the Plan is being operated in compliance with the applicable requirements of the Code and, therefore, believes that the Plan 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 tax authorities. Management has evaluated the Plan’s tax positions and concluded that as of December 31, 2025, the Plan had maintained its tax-exempt status and had taken no uncertain tax positions that required an adjustment to the financial statements. Therefore, no provision or liability for income taxes has been included in the Plan’s financial statements. The Plan is subject to routine audits by taxing jurisdictions; however, there are currently no audits for any tax periods in progress.
Risks and Uncertainties	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 value of investment securities will occur in the near term and that such changes could materially affect the participants’ account balances and the amounts reported in the Statements of Net Assets Available for Benefits. Market risks include global events which could impact the value of investment securities, such as a pandemic or international conflict.

- Definition

Disclosure of accounting policy for use of estimate in preparation of financial statement of employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References + Details

PARTY-IN-INTEREST TRANSACTIONS	12 Months Ended
PARTY-IN-INTEREST TRANSACTIONS	Dec. 31, 2025
EBP 004
EBP, Related Party and Party-in-Interest Transactions [Line Items]
PARTY-IN-INTEREST TRANSACTIONS	PARTY-IN-INTEREST TRANSACTIONS Plan investments are shares of mutual funds managed by Fidelity. Fidelity is the trustee as defined by the Plan and, therefore, these transactions qualify as party-in-interest transactions. Fees paid by the Plan for professional, legal, accounting, and other expenses are paid through revenue sharing and, in accordance with the Plan's terms, by direct payment from the Plan’s forfeitures account and amounted to $466,648 for the year ended December 31, 2025. The total revenue used to offset these expenses under the Revenue Credit Program (revenue sharing) was $169,212 for the year ended December 31, 2025. The majority of the remaining expenses represents fees paid by the participants for recordkeeping expenses and fees for individual plan activities, including the setup and maintenance of loans, which amounted to $1,313,801. The Plan also invests in Wabtec stock. Wabtec is the plan sponsor, and therefore, transactions qualify as party-in-interest transactions. Investment income from parties-in-interest transactions amounted to $242,380,563, and interest income from notes receivable from participants amounted to $3,124,442 for the year ended December 31, 2025.

FAIR VALUE MEASUREMENT

12 Months Ended

Dec. 31, 2025

EBP 004

EBP, Investment, Fair Value and NAV [Line Items]

FAIR VALUE MEASUREMENT

The Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 820, Fair Value Measurements and Disclosures, establishes a valuation hierarchy for disclosure of the inputs to valuation used to measure fair value. This hierarchy prioritizes the inputs into three broad levels as follows:

•Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities.

•Level 2 inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument.

•Level 3 inputs are unobservable inputs based on the Company’s assumptions used to measure assets and liabilities at fair value.

A financial asset or liability’s classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. Valuation techniques used need to maximize the use of observable inputs and minimize the use of unobservable inputs. During 2025, based on further evaluation of the nature of the investment and the valuation inputs, management reclassified the Plan’s investment in the Fidelity Blue Chip Growth Commingled Pool from shares of registered investment companies to common collective trust within the fair value hierarchy. The investment is a common collective trust that provides a daily net asset value and is redeemable at Net Asset Value ("NAV"). The

presentation in the 2024 fair value hierarchy has been updated to conform to the current year presentation. This reclassification had no effect on total net assets available for benefits or changes in net assets available for benefits. With the exception of the reclassification, there have been no changes in the methodologies used at December 31, 2025 and 2024.

The Plan’s assets are invested in the common stock of Wabtec, common collective trusts, a self-directed brokerage fund, and shares of registered investment companies (mutual funds) held by Fidelity Management Trust Company (“Fidelity”), the Plan custodian and trustee, and various other issuers. The following is a description of the valuation methodologies used for assets measured at fair value:

•Shares of registered investment companies – Valued at the quoted NAV of shares held by the Plan at year end.

•Employer securities – These investments consist of a unitized stock fund which consists of Wabtec common stock valued at the closing price reported on the active market on which the individual securities are traded and a small money market fund for liquidity purposes.

•Self-directed brokerage funds – These investments consist of cash equivalents and shares of registered investment companies.

•Common collective trusts – These investments are comprised of shares or units in commingled funds that are not publicly traded. The underlying assets in these funds are primarily publicly traded equity securities, fixed income securities, and commodity-related securities and are valued at their NAV, as a practical expedient, that is calculated by the investment manager or sponsor of the fund. This practical expedient would not be used if it is determined to be probable that the common collective trust will sell the investment for an amount different from the reported NAV. Participant transactions (purchases and sales) may occur daily.

The preceding methods described may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. Furthermore, although the Plan's management believes its valuation methods are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different fair value measurement at the reporting date.

The following table sets forth by level, within the fair value hierarchy, the Plan’s assets at fair value as of December 31, 2025 and 2024.


			December 31, 2025
Assets	Total		Level 1		NAV
Shares of registered investment companies	$	1,312,358,458	$	1,312,358,458	$	—
Employer securities	65,612,036		65,612,036		—
Self-directed brokerage funds	48,560,404		48,560,404		—
Common collective trusts (a)	371,044,793		—		371,044,793
Total	$	1,797,575,691	$	1,426,530,898	$	371,044,793


			December 31, 2024
Assets	Total		Level 1		NAV
Shares of registered investment companies	$	1,074,390,682	$	1,074,390,682	$	—
Employer securities	62,406,217		62,406,217		—
Self-directed brokerage funds	34,916,470		34,916,470		—
Common collective trusts (a)	343,909,981		—		343,909,981
Total	$	1,515,623,350	$	1,171,713,369	$	343,909,981

The Common Collective Trusts are measured at fair value using the NAV per share practical expedient. There are no participant redemption restrictions for these investments; the redemption notice period of 12 months is applicable only to the Plan; unfunded commitments are not applicable; and redemption frequency is daily.

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

- Definition

The entire disclosure for fair value of investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)), including, but not limited to, fair value measured at net asset value per share as practical expedient (NAV).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

STATEMENTS OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS - EBP 004	12 Months Ended
	Dec. 31, 2025 USD ($)
Sources of net assets:
Employee contributions	$ 97,284,388
Employer contributions, net	55,202,086
Interest and dividend income	62,828,160
Realized gain on investment transactions	15,951,481
Net appreciation in fair value of investments	197,140,709
Total sources of net assets	428,406,824
Applications of net assets:
Benefit payments	148,125,640
Administrative expenses, net	1,611,237
Total applications of net assets	149,736,877
Increase in net assets	278,669,947
Beginning of year	1,581,584,786
End of year	$ 1,860,254,733

RECONCILIATION OF FINANCIAL STATEMENTS TO FORM 5500 (Details) - EBP 004 - USD ($)	Dec. 31, 2025	Dec. 31, 2024
EBP, Reconciliation of Financial Statement to Form 5500 [Line Items]
Net assets available for benefits per the financial statements	$ 1,860,254,733	$ 1,581,584,786
Notes receivable from investments, included in investments on Form 5500	37,595,443	34,478,809
Loans deemed distributed	(37,595,443)	(34,478,809)
Net assets per the Form 5500	$ 1,860,254,733	$ 1,581,584,786

- Definition

Amount of asset less liability available to pay benefit of participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)), including, but not limited to, aggregation of participants' individual account balances.

+ References

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+ Details

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	Dec. 31, 2025
EBP 004
EBP, Accounting Policy [Line Items]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of Accounting The accounts of the Plan are maintained on the accrual basis of accounting in accordance with accounting principles generally accepted in the United States of America (US GAAP). Certain prior year amounts have been reclassified, where necessary, to conform to the current year presentation. Accounting Estimates The process of preparing financial statements in conformity with US GAAP requires management to use estimates and assumptions that affect certain types of assets, liabilities and changes therein. Such estimates primarily relate to unsettled transactions and events as of the date of the financial statements. Accordingly, actual results may differ from estimated amounts. Investment Valuation and Income Recognition Investments are reported at fair 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. The Plan’s Committee determines the Plan’s valuations policies utilizing information provided by the investment advisers and custodian. See Note 3 for a discussion of fair value measurements. Purchases and sales of securities are recorded on a trade-date basis. Interest income is recorded on an accrual basis. Dividends are recorded on the ex-dividend date. Realized gain on investment transactions includes the Plan's gains and losses on investments bought and sold during the year. Net appreciation in fair value of investments includes the Plan's gains and losses on investments held during the year. Payment of Benefits Benefits are recorded when paid. Expenses Certain expenses of maintaining the Plan are paid by the Plan, unless otherwise paid by the Company. Expenses that are paid by the Company are excluded from these financial statements. Fees related to the administration of notes receivable from participants are charged directly to the participant’s account and are included in administrative expenses. Income Taxes The Plan has received a favorable determination letter dated August 24, 2022 stating that the Plan is qualified under Section 401(a) of the Code and, therefore, the related trust is exempt from taxation. This determination letter applies to all amendments dated through June 23, 2021. Once qualified, the Plan is required to operate in conformity with the Code to maintain its qualification. Since the June 23, 2021 amendment, the Plan has been restated and amended, but the plan administrator believes the Plan is being operated in compliance with the applicable requirements of the Code and, therefore, believes that the Plan 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 tax authorities. Management has evaluated the Plan’s tax positions and concluded that as of December 31, 2025, the Plan had maintained its tax-exempt status and had taken no uncertain tax positions that required an adjustment to the financial statements. Therefore, no provision or liability for income taxes has been included in the Plan’s financial statements. The Plan is subject to routine audits by taxing jurisdictions; however, there are currently no audits for any tax periods in progress. 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 value of investment securities will occur in the near term and that such changes could materially affect the participants’ account balances and the amounts reported in the Statements of Net Assets Available for Benefits. Market risks include global events which could impact the value of investment securities, such as a pandemic or international conflict.

COVER	12 Months Ended
COVER	Dec. 31, 2025
Document Information [Line Items]
Document Type	11-K
Entity Registrant Name	Westinghouse Air Brake Technologies Corporation
Amendment Flag	false
Entity Central Index Key	0000943452
EBP 004
Document Information [Line Items]
Document Type	11-K
Entity Registrant Name	Westinghouse Air Brake Technologies Corporation
Amendment Flag	false
Entity Central Index Key	0000943452

SUBSEQUENT EVENTS (Details) - USD ($)	Jan. 30, 2026	Jan. 22, 2026
EBP 004 \| Subsequent Event
EBP, Subsequent Event [Line Items]
EBP, Investment, Plan Interest Transferred, Fair Value	$ 14,969,758	$ 30,458,429

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - EBP 004	12 Months Ended
	Dec. 31, 2025
EBP, Accounting Policy [Line Items]
EBP, Tax Determination Letter, Obtained [true false]	true
EBP, Tax Determination Letter, Date	Aug. 24, 2022