0001628280-26-042644 | 11-K | XBRL Viewer

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.

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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).

SUBSEQUENT EVENTS	12 Months Ended
Dec. 31, 2025
EBP 112
EBP, Subsequent Event [Line Items]
SUBSEQUENT EVENTS	SUBSEQUENT EVENTS The Company and the Plan have evaluated subsequent events through the date that these financial statements were issued, and there were no subsequent events, which would require an adjustment or additional disclosures to the financial statements.

FAIR VALUE MEASURES - Plan Investments Measured at Fair Value (Details) - EBP 112 - USD ($)	Dec. 31, 2025	Dec. 31, 2024
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	$ 270,834,244	$ 260,648,556
Total Fair Value
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	116,961,428	117,142,200
Level 1
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	116,961,428	117,142,200
Level 2
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	0	0
Level 3
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	0	0
Registered investment companies
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	102,134,093	100,937,964
Registered investment companies \| Total Fair Value
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	102,134,093	100,937,964
Registered investment companies \| Level 1
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	102,134,093	100,937,964
Registered investment companies \| Level 2
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	0	0
Registered investment companies \| Level 3
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	0	0
Quaker Chemical Corporation Stock Fund
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	10,809,221	12,445,378
Quaker Chemical Corporation Stock Fund \| Total Fair Value
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	10,809,221	12,445,378
Quaker Chemical Corporation Stock Fund \| Level 1
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	10,809,221	12,445,378
Quaker Chemical Corporation Stock Fund \| Level 2
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	0	0
Quaker Chemical Corporation Stock Fund \| Level 3
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	0	0
Participant-directed brokerage accounts
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	4,018,114	3,758,858
Participant-directed brokerage accounts \| Total Fair Value
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	4,018,114	3,758,858
Participant-directed brokerage accounts \| Level 1
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	4,018,114	3,758,858
Participant-directed brokerage accounts \| Level 2
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	0	0
Participant-directed brokerage accounts \| Level 3
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	0	0
Collective trust funds
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	153,872,816	143,506,356
Collective trust funds \| Net Asset Value (NAV)
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	$ 153,872,816	$ 143,506,356

RELATED PARTY AND PARTY-IN-INTEREST TRANSACTIONS (Details) - EBP 112 - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
EBP, Related Party and Party-in-Interest Transactions [Line Items]
Fair value of investments	$ 270,834,244	$ 260,648,556
Total contributions	$ 19,420,034	$ 19,532,349
Quaker Chemical Corporation Stock Fund
EBP, Related Party and Party-in-Interest Transactions [Line Items]
Number of shares held in plan	78,721	88,416
Fair value of investments	$ 10,809,221	$ 12,445,378
Value from sales of investments	896,727	572,015
Total contributions	$ 127,229	$ 174,343

Fair value of investment, excluding plan interest in master trust, held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Includes, but is not limited to, derivative, investment measured at net asset value per share as practical expedient, and insurance contract not meeting fully-benefit responsive investment criteria.

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Schedule H, Line 4(i) – Schedule of Assets (Held At End of Year) (Details) - EBP 112	12 Months Ended
	Dec. 31, 2025 USD ($)
EBP, Schedule of Asset Held for Investment [Line Items]
Entity tax identification number	23-0993790
Plan number	112
Total Investments, at Fair Value	$ 270,834,244
Total Participant Notes Receivable	$ 3,064,928
Minimum
EBP, Schedule of Asset Held for Investment [Line Items]
Interest rate	4.25%
Maximum
EBP, Schedule of Asset Held for Investment [Line Items]
Interest rate	9.50%
Investment, Identifier [Axis]: Jennison Small/Mid Cap Equity Fund of Prudential Trust \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Total Investments, at Fair Value	$ 3,654,826
Investment, Identifier [Axis]: Loomis Sayles Core Plus Bond Fund; Class N \| Registered Investment Company
EBP, Schedule of Asset Held for Investment [Line Items]
Total Investments, at Fair Value	199,715
Investment, Identifier [Axis]: Quaker Chemical Corporation Stock Fund \| Common Stock Fund
EBP, Schedule of Asset Held for Investment [Line Items]
Total Investments, at Fair Value	10,809,221
Investment, Identifier [Axis]: Vanguard Brokerage Fund \| Self-Directed Brokerage Accounts
EBP, Schedule of Asset Held for Investment [Line Items]
Total Investments, at Fair Value	4,018,114
Investment, Identifier [Axis]: Vanguard Extended Market Index Fund Institutional Shares \| Registered Investment Company
EBP, Schedule of Asset Held for Investment [Line Items]
Total Investments, at Fair Value	9,331,814
Investment, Identifier [Axis]: Vanguard Federal Money Market Fund \| Registered Investment Company
EBP, Schedule of Asset Held for Investment [Line Items]
Total Investments, at Fair Value	16,632
Investment, Identifier [Axis]: Vanguard Institutional Index Fund Institutional Shares \| Registered Investment Company
EBP, Schedule of Asset Held for Investment [Line Items]
Total Investments, at Fair Value	42,399,474
Investment, Identifier [Axis]: Vanguard International Growth Fund Admiral Shares \| Registered Investment Company
EBP, Schedule of Asset Held for Investment [Line Items]
Total Investments, at Fair Value	7,716,284
Investment, Identifier [Axis]: Vanguard Retirement Savings Trust III \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Total Investments, at Fair Value	13,306,856
Investment, Identifier [Axis]: Vanguard Target Retirement 2020 Trust II \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Total Investments, at Fair Value	5,667,542
Investment, Identifier [Axis]: Vanguard Target Retirement 2025 Trust II \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Total Investments, at Fair Value	16,549,026
Investment, Identifier [Axis]: Vanguard Target Retirement 2030 Trust II \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Total Investments, at Fair Value	23,241,332
Investment, Identifier [Axis]: Vanguard Target Retirement 2035 Trust II \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Total Investments, at Fair Value	22,012,151
Investment, Identifier [Axis]: Vanguard Target Retirement 2040 Trust II \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Total Investments, at Fair Value	17,314,419
Investment, Identifier [Axis]: Vanguard Target Retirement 2045 Trust II \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Total Investments, at Fair Value	14,194,941
Investment, Identifier [Axis]: Vanguard Target Retirement 2050 Trust II \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Total Investments, at Fair Value	15,393,941
Investment, Identifier [Axis]: Vanguard Target Retirement 2055 Trust II \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Total Investments, at Fair Value	10,664,044
Investment, Identifier [Axis]: Vanguard Target Retirement 2060 Trust II \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Total Investments, at Fair Value	5,191,584
Investment, Identifier [Axis]: Vanguard Target Retirement 2065 Trust II \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Total Investments, at Fair Value	3,054,726
Investment, Identifier [Axis]: Vanguard Target Retirement 2070 Trust II \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Total Investments, at Fair Value	153,919
Investment, Identifier [Axis]: Vanguard Target Retirement Income Trust II \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Total Investments, at Fair Value	3,472,076
Investment, Identifier [Axis]: Vanguard Target Retirement Income and Growth Trust II \| Common/Collective Trust
EBP, Schedule of Asset Held for Investment [Line Items]
Total Investments, at Fair Value	1,433
Investment, Identifier [Axis]: Vanguard Total Bond Market Index Fund Institutional Shares \| Registered Investment Company
EBP, Schedule of Asset Held for Investment [Line Items]
Total Investments, at Fair Value	12,007,457
Investment, Identifier [Axis]: Vanguard Total International Bond Index Fund Admiral Shares \| Registered Investment Company
EBP, Schedule of Asset Held for Investment [Line Items]
Total Investments, at Fair Value	1,083,652
Investment, Identifier [Axis]: Vanguard Total International Stock Index Fund Admiral Shares \| Registered Investment Company
EBP, Schedule of Asset Held for Investment [Line Items]
Total Investments, at Fair Value	6,251,884
Investment, Identifier [Axis]: Vanguard U.S. Growth Fund Admiral Shares \| Registered Investment Company
EBP, Schedule of Asset Held for Investment [Line Items]
Total Investments, at Fair Value	16,443,704
Investment, Identifier [Axis]: Vanguard Windsor II Fund Admiral Shares \| Registered Investment Company
EBP, Schedule of Asset Held for Investment [Line Items]
Total Investments, at Fair Value	$ 6,683,477

SUMMARY OF ACCOUNTING POLICIES (Policies) - EBP 112	12 Months Ended
SUMMARY OF ACCOUNTING POLICIES (Policies) - EBP 112	Dec. 31, 2025
EBP, Accounting Policy [Line Items]
Basis of Accounting	Basis of Accounting The Plan’s financial statements are prepared on the accrual basis of accounting.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, and changes therein, and disclosure of contingent assets and liabilities. The most significant estimate is the determination of the fair values of the Plan’s investments. Actual results could differ from those estimates.
Administration of Plan Assets	Administration of Plan Assets The Plan’s assets are held by a trust managed by an affiliate of Vanguard Fiduciary Trust Company (“VFTC”), which acts as the Trustee for Plan investments. Certain administrative functions are performed by officers or employees of the Company. No such officer or employee receives compensation from the Plan. Substantially all administrative expenses, including the Trustee’s and audit fees, are paid directly by the Company and are therefore excluded from these financial statements.
Investment Valuation and Income Recognition	Investment Valuation and Income Recognition The Plan’s investments are recorded 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. Plan management determines the Plan’s valuation policies utilizing information provided by the Trustee. Refer to Note 4 – Fair Value Measures for further information. Purchases and sales of investments are recorded on a trade-date basis. Net appreciation in fair value of investments includes gains and losses on investments bought and sold during the year as well as unrealized gains and losses on those held at year end. Interest income is accrued when earned. Dividend income is recorded on the ex-dividend date. Capital gain distributions are included in dividend income. Net investment returns reflect certain fees paid by the investment funds, which include costs for portfolio management, administrative and other services as described in each fund’s prospectus. These fees are deducted by the investment funds prior to allocation of the Plan’s investment earnings activity and are therefore not separately identified as Plan expenses.
Participant Notes Receivable	Participant Notes Receivable Notes receivable from participants are measured at their unpaid principal balance plus any accrued but unpaid interest. Interest income is recorded on the accrual basis. Delinquent notes receivable from participants are recorded as a benefit payment when the Plan Administrator deems the participant note receivable to be in default based on the terms of the Plan document.
Payment of Benefits	Payment of Benefits Benefits are recorded when paid.

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

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

Statements of Net Assets Available for Benefits - EBP 112 - USD ($)	Dec. 31, 2025	Dec. 31, 2024
Investments, at fair value:
Total investments	$ 270,834,244	$ 260,648,556
Receivables:
Employer's contributions receivable	258,221	312,544
Participant notes receivable	3,064,928	3,354,772
Total receivables	3,323,149	3,667,316
Net assets available for benefits	274,157,393	264,315,872
Registered investment companies
Investments, at fair value:
Total investments	102,134,093	100,937,964
Collective trust funds
Investments, at fair value:
Total investments	153,872,816	143,506,356
Quaker Chemical Corporation Stock Fund
Investments, at fair value:
Total investments	10,809,221	12,445,378
Participant-directed brokerage accounts
Investments, at fair value:
Total investments	$ 4,018,114	$ 3,758,858

DESCRIPTION OF PLAN	12 Months Ended
DESCRIPTION OF PLAN	Dec. 31, 2025
EBP 112
EBP, Description of Plan [Line Items]
DESCRIPTION OF PLAN	DESCRIPTION OF PLAN The following description of the Quaker Houghton Retirement Savings Plan (the “Plan”) provides only general information. The Plan document provides a complete description of the Plan’s provisions. General The Plan is a defined contribution plan for certain U.S. employees of Quaker Chemical Corporation (doing business as Quaker Houghton) (the “Company”) and participating employers (AC Products, Inc. (“AC”), Epmar Corporation (“Epmar”), Summit Lubricants, Inc. (“Summit”), ECLI Products, LLC (“ECLI”), Houghton International Inc. (“Houghton”), Wallover Oil Company, Inc. (“Wallover”), Coral Chemical Company (“Coral”), Ultraseal America, Inc. (“Ultraseal”), SIFCO Applied Surface Concepts, LLC (“SIFCO”), and Baron Acquisition LLC (“Baron”). The Plan is administered by the Retirement Savings Plan Committee, which is appointed by the Company’s Board of Directors, and is subject to the Employee Retirement Income Security Act of 1974 (“ERISA”), as amended. Employees of the Company and adopting affiliates are eligible to participate in the Plan on their first day of employment or as soon as administratively practicable thereafter, unless specified differently in any bargaining unit agreement. Contributions Participants may elect to contribute on a before-tax and/or after-tax basis any whole percentage of their compensation as defined, up to 75%, during the year, not to exceed the annual Internal Revenue Code (“IRC”) limits. At the discretion of the Retirement Savings Plan Committee, the Plan matches 50% of the first 6% of compensation as defined that is contributed to the Plan, with a maximum matching contribution of 3% of compensation. In addition, the Plan provides for non-elective non-discretionary contributions on behalf of participants who have completed one year of service equal to 3% of the eligible participant's compensation, as defined. Participants who are eligible to make contributions and who have or will attain age 50 before the end of the Plan year are eligible to make catch-up contributions in accordance with, and subject to, the limitations of the IRC. No Company matching contributions are made with respect to catch-up contributions. Participant Accounts Each participant’s account is credited or deducted with the participant’s contribution and any applicable direct expenses and allocation of the Company’s contributions and any Plan earnings and losses. Allocations are based on participant earnings, account balances, or specific participation transactions, as defined. The benefit to which a participant is entitled is the benefit that can be provided from the participant’s vested account balance. Participant Notes Receivable Participants may borrow from their fund accounts (other than amounts invested in the Quaker Chemical Corporation Stock Fund) an amount limited to the lesser of $50,000 or 50% of the participant’s vested account balance. The loans bear interest at a rate equal to the prevailing rate of interest charged for similar loans by lending institutions in the community (generally the prime rate), plus 1%. The term of each participant loan generally may not exceed five years except for the purchase of principal residence loans. Interest rates on outstanding participant notes receivable as of December 31, 2025 ranged from 4.25% to 9.50%. Principal and interest are paid ratably through periodic payroll deductions. Loan application fees and annual maintenance fees on all outstanding loans are paid by the participant. The Plan allows up to two loans at a time. Payment of Benefits Generally, upon separation of service, for any reason, a participant may receive a lump sum amount equal to the value of the participant’s account. In addition, a participant may elect to take an in-service distribution from their rollover account prior to reaching age 59 ½, and from all accounts upon reaching age 59 ½. If a participant’s vested account balance exceeds $1,000, the participant may defer payment until April 1 following the year the participant reaches the applicable age (age 70 ½ for a participant born before July 1, 1949, age 72, for a participant born after June 30, 1949 and before January 1, 1951, age 73 for a participant born on or after January 1, 1951 and before January 1, 1960, age 75 for a participant born on or after January 1960) or following the year in which the participant terminates employment, if later. Hardship Withdrawals Participants who are actively employed and who meet certain requirements may take a hardship withdrawal from their elective contributions. Vesting Upon entering the Plan, participants are fully vested in Company matching contributions, Company discretionary non-elective contributions, Company non-discretionary non-elective contributions, and employee deferrals plus actual earnings. Plan Termination Although it has not expressed any intent to do so, the Company has the right to terminate the Plan subject to the provisions of ERISA.

DESCRIPTION OF PLAN (Details) - EBP 112	12 Months Ended
DESCRIPTION OF PLAN (Details) - EBP 112	Dec. 31, 2025 USD ($) loan
EBP, Description of Plan [Line Items]
Participant before-tax contribution limit as a % of their compensation	75.00%
Employer contribution matching percentage	50.00%
Target contribution percentage	6.00%
Participant compensation percentage matched by employer	3.00%
Service period required for eligible matching	1 year
Automatic deferral rate as a percentage of eligible participant's compensation	3.00%
Participant notes receivable maximum borrowing amount	$ 50,000
Participant notes receivable maximum borrowing percentage of account balance	50.00%
Participant notes receivable, basis spread on variable interest rate	1.00%
Maximum borrowing term of a participant loan	5 years
Limit on number of loans a participant may have at a time \| loan	2
Participant distribution minimum age	59 years 6 months
Participant account threshold to defer payments	$ 1,000
Participant distribution minimum age if participant born before July 1, 1949	70 years 6 months
Participant distribution minimum age if participant born between July 1, 1949 and January 1, 1951	72 years
Participant distribution minimum age if participant born between January 1, 1951 and January 1, 1960	73 years
Participant distribution minimum age if participant born after January 1960	75 years
Minimum
EBP, Description of Plan [Line Items]
Interest rate	4.25%
Maximum
EBP, Description of Plan [Line Items]
Interest rate	9.50%

Schedule H, Line 4(i) – Schedule of Assets (Held At End of Year)

12 Months Ended

Dec. 31, 2025

EBP 112

Schedule H, Line 4(i) – Schedule of Assets (Held at Year End)

Schedule H, Line 4(i)

Quaker Houghton Retirement Savings Plan

Schedule of Assets (Held at End of Year)

As of December 31, 2025

Quaker Houghton Retirement Savings Plan, EIN 23-0993790, PN 112

Attachment to Form 5500, Schedule H, Part IV, Line 4(i):

(a)

(b) Identity of issue, borrower, lessor, or similar party

(e) Current Value

Jennison Small/Mid Cap Equity Fund of Prudential Trust

Common/Collective Trust

3,654,826

Vanguard Target Retirement 2020 Trust II

Common/Collective Trust

5,667,542

Vanguard Target Retirement 2025 Trust II

Common/Collective Trust

16,549,026

Vanguard Target Retirement 2030 Trust II

Common/Collective Trust

23,241,332

Vanguard Target Retirement 2035 Trust II

Common/Collective Trust

22,012,151

Vanguard Target Retirement 2040 Trust II

Common/Collective Trust

17,314,419

Vanguard Target Retirement 2045 Trust II

Common/Collective Trust

14,194,941

Vanguard Target Retirement 2050 Trust II

Common/Collective Trust

15,393,941

Vanguard Target Retirement 2055 Trust II

Common/Collective Trust

10,664,044

Vanguard Target Retirement 2060 Trust II

Common/Collective Trust

5,191,584

Vanguard Target Retirement 2065 Trust II

Common/Collective Trust

3,054,726

Vanguard Target Retirement 2070 Trust II

Common/Collective Trust

153,919

Vanguard Target Retirement Income Trust II

Common/Collective Trust

3,472,076

Vanguard Target Retirement Income and Growth Trust II

Common/Collective Trust

1,433

Vanguard Retirement Savings Trust III

Common/Collective Trust

13,306,856

Loomis Sayles Core Plus Bond Fund; Class N

Registered Investment Company

199,715

Vanguard Extended Market Index Fund Institutional Shares

Registered Investment Company

9,331,814

Vanguard Federal Money Market Fund

Registered Investment Company

16,632

Vanguard Institutional Index Fund Institutional Shares

Registered Investment Company

42,399,474

Vanguard International Growth Fund Admiral Shares

Registered Investment Company

7,716,284

Vanguard Total Bond Market Index Fund Institutional Shares

Registered Investment Company

12,007,457

Vanguard Total International Bond Index Fund Admiral Shares

Registered Investment Company

1,083,652

Vanguard Total International Stock Index Fund Admiral Shares

Registered Investment Company

6,251,884

Vanguard U.S. Growth Fund Admiral Shares

Registered Investment Company

16,443,704

Vanguard Windsor II Fund Admiral Shares

Registered Investment Company

6,683,477

Vanguard Brokerage Fund

Self-Directed Brokerage Accounts

4,018,114

Quaker Chemical Corporation Stock Fund

Common Stock Fund

10,809,221

Total Investments, at Fair Value

270,834,244

Participant notes receivable

Loans to participants, interest rates ranging from 4.25% to 9.50% with various maturities through 2034

3,064,928

Total Participant Notes Receivable

3,064,928


*			Party-in-Interest
(d)			Column (d) is omitted as cost is not required for participant directed investments

FAIR VALUE MEASURES

12 Months Ended

Dec. 31, 2025

EBP 112

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

FAIR VALUE MEASURES

The Plan applies the guidance of the Financial Accounting Standards Board regarding fair value measurements, which establishes a common definition for fair value. Specifically, the guidance utilizes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value into three broad levels. The following is a brief description of those three levels:

•Level 1: Observable inputs such as quoted prices (unadjusted) in active markets for identical assets or liabilities.

•Level 2: Inputs other than quoted prices that are observable for the asset or liability, either directly or indirectly. These include quoted prices for similar assets or liabilities in active markets and quoted prices for identical or similar assets or liabilities in markets that are not active.

•Level 3: Unobservable inputs that reflect the reporting entity’s own assumptions.

The following is a description of the valuation methodologies used for the investments measured at fair value, including the general classification of such instruments pursuant to the valuation hierarchy:

Registered Investment Companies

The shares of registered investment companies, which represent the Net Asset Value (“NAV”) of shares held by the Plan, are valued based on quoted market prices on an exchange in an active market and are classified as Level 1 investments.

Common Stock Fund

The common stock fund is comprised of investments in the Quaker Chemical Corporation Stock Fund, which is composed of shares of the Company and uninvested cash. The shares of the Company are traded on an exchange in an active market and are classified as a Level 1 investment.

Participant-Directed Brokerage Accounts

The participant-directed brokerage accounts are mainly composed of investments in common stock and registered investment companies, which are valued based on quoted market prices on an exchange in an active market and are classified as Level 1 investments.

Common/Collective Trust

The Plan invests in certain Vanguard Institutional trusts and certain Vanguard Retirement Trusts (collectively, the “Vanguard Trusts”), which include a stable value fund and trusts that invest in gradually differing mixes of Vanguard funds and trusts tailored to the risk level of the target retirement year. The Plan also invests in Prudential Trust’s Jennison Small/Mid Cap Equity Fund (the “Jennison Fund”) that holds ownership in a variety of equity securities across the Russell 2500 Index, which combines a portion of midcap stocks with small cap stocks, on behalf of its investors. Contract value is the amount participants would receive if they were to initiate a permitted transaction under the terms of the Plan, and also, represents contributions made under the contract, plus earnings, less participant withdrawals. Participants may ordinarily direct the withdrawal or transfer of all or a portion of their investment at contract value. Certain events limit the Plan’s ability to transact at contract value, including: 1) premature termination of the contracts by the Plan; 2) Plan termination; and 3) bankruptcy of the Plan sponsor. The Plan administrator does not believe that any events that would limit the Plan’s ability to transact at contract value with Plan participants are probable of occurring. Contract issuers may terminate and settle the contracts at other than contract value if there is a change in qualification status of a participant, sponsor or plan, a breach of material obligations under the contract and misrepresentation by the contract holder or failure of the underlying portfolio to conform to pre-established investment guidelines. The Vanguard Trusts and Jennison Fund are valued at the NAV of units held at year end. The NAV, as provided by the Trustee, is used as a practical expedient to estimate fair value. The NAV is based on the fair value of the underlying investments less any liabilities. The practical expedient would not be used when it is determined to be probable that the Vanguard Trusts or Jennison Fund will sell the investment for an amount different than the reported NAV.

The valuation methodologies described above may produce fair value calculations that may not be indicative of net realizable value or reflective of future fair values. Furthermore, while the Plan believes its valuation methodologies 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. There have been no significant changes in valuation methodologies used during the years ended December 31, 2025 and 2024.

As of December 31, 2025 and 2024, the Plan’s investments measured at fair value on a recurring basis were as follows:


			Fair Value Measurements as of December 31, 2025 Using Fair Value Hierarchy
Investments	Total Fair Value		Level 1		Level 2		Level 3
Registered investment companies	$	102,134,093	$	102,134,093	$	—	$	—
Quaker Chemical Corporation Stock Fund	10,809,221		10,809,221		—		—
Participant-directed brokerage accounts	4,018,114		4,018,114		—		—
Total investments in fair value hierarchy	116,961,428		116,961,428		—		—
Common/collective trusts measured at NAV *	153,872,816		—		—		—
Total investments	$	270,834,244	$	116,961,428	$	—	$	—


			Fair Value Measurements as of December 31, 2024 Using Fair Value Hierarchy
Investments	Total Fair Value		Level 1		Level 2		Level 3
Registered investment companies	$	100,937,964	$	100,937,964	$	—	$	—
Quaker Chemical Corporation Stock Fund	12,445,378		12,445,378		—		—
Participant-directed brokerage accounts	3,758,858		3,758,858		—		—
Total investments in fair value hierarchy	117,142,200		117,142,200		—		—
Common/collective trusts measured at NAV *	143,506,356		—		—		—
Total investments	$	260,648,556	$	117,142,200	$	—	$	—

As of December 31, 2025 and 2024, the Plan’s investments that are measured at fair value using the NAV per share were as follows:

December 31, 2025

Common/Collective Trusts

Total Fair Value

Unfunded Commitments

Redemption Frequency

Redemption Notice Period

Equity Fund

3,654,826

—

Daily

N/A

Stable Value Funds

13,306,856

—

Daily

N/A

Target-Date Funds

136,911,134

—

Daily

N/A

Total investments

153,872,816

December 31, 2024

Common/Collective Trusts

Total Fair Value

Unfunded Commitments

Redemption Frequency

Redemption Notice Period

Equity Fund

4,310,434

—

Daily

N/A

Stable Value Funds

17,807,576

—

Daily

N/A

Target-Date Funds

121,388,346

—

Daily

N/A

Total investments

143,506,356

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.

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).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-3

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-3

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 962
-SubTopic 325
-Name Accounting Standards Codification
-Section 55
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478873/962-325-55-17

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
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-Paragraph 6A
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-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
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-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
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-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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-Subparagraph (bbb)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477509/962-325-45-5

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
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Reference 13: http://www.xbrl.org/2003/role/disclosureRef
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Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
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Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
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Reference 16: http://www.xbrl.org/2003/role/recommendedDisclosureRef
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Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
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-URI https://asc.fasb.org/1943274/2147477509/962-325-45-6

Statements of Changes in Net Assets Available for Benefits - EBP 112 - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Investment income:
Interest and dividend income	$ 4,983,268	$ 4,650,975
Net appreciation in fair value of investments	31,624,559	19,159,843
Total investment income	36,607,827	23,810,818
Interest income, participant notes receivable	253,798	236,036
Contributions:
Employer	6,698,253	6,927,950
Participant	10,823,290	11,014,327
Rollover	1,898,491	1,590,072
Total contributions	19,420,034	19,532,349
Total additions	56,281,659	43,579,203
Deductions
Payment of benefits	46,440,138	31,204,940
Total deductions	46,440,138	31,204,940
Net increase	9,841,521	12,374,263
Net assets available for benefits:
Beginning of year	264,315,872	251,941,609
End of year	$ 274,157,393	$ 264,315,872

FAIR VALUE MEASURES - Plan Investments Measured at Fair Value Using NAV per share (Details) - EBP 112 - USD ($)	Dec. 31, 2025	Dec. 31, 2024
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	$ 270,834,244	$ 260,648,556
Collective trust funds
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	153,872,816	143,506,356
Collective trust funds \| Net Asset Value (NAV)
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	153,872,816	143,506,356
Equity Fund \| Net Asset Value (NAV)
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	3,654,826	4,310,434
Unfunded Commitments	0	0
Stable Value Funds \| Net Asset Value (NAV)
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	13,306,856	17,807,576
Unfunded Commitments	0	0
Target-Date Funds \| Net Asset Value (NAV)
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	136,911,134	121,388,346
Unfunded Commitments	$ 0	$ 0

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.