FORM 10-Q QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2026OR TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period fromto QUAKER CHEMICAL CORPORATION (Exact name of registrant as specified in its charter) (I.R.S. Employer Identification No.) Not Applicable Former name, former address and former fiscal year, if changed since last report. Securities registered pursuant to Section 12(b) of the Act: Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during thepreceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90days.YesNo Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T(§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). YesNo Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerginggrowth company. See the definitions of “large accelerated filer,” “accelerated filer”, “smaller reporting company”, and “emerging growth company” in Rule 12b-2 of theExchange Act. If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revisedfinancial accounting standards provided pursuant to Section 13(a) of the Exchange Act. Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).YesNoIndicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date. Number of Shares of Common Stock Outstanding on July27, 2026 Quaker Chemical CorporationTable of Contents PagePARTI.FINANCIAL INFORMATION2Item 1.Financial Statements (Unaudited)2Condensed Consolidated Statements of Operations for the Three and Six Months EndedJune30, 2026 andJune30, 20252Condensed Consolidated Statements of Comprehensive Income for the Three and Six Months EndedJune30,2026 andJune30, 20253Condensed Consolidated Balance Sheets as ofJune30, 2026 andDecember31, 20254Condensed Consolidated Statements of Cash Flows for theSix Months Ended June 30, 2026 andJune30, 20255Condensed Consolidated Statements of Changes in Equity for the Three and Six Months EndedJune30, 2026andJune30, 20256Notes to Condensed Consolidated Financial Statements7Item2.Management’s Discussion and Analysis of Financial Condition and Results of Operations.27Item3.Quantitative and Qualitative Disclosures about Market Risk.43Item4.Controls and Procedures.43PARTIIOTHER INFORMATION.Item 1.Legal Proceedings.44Item 1A.Risk Factors.44Item 2.Unregistered Sales of Equity Securities and Use of Proceeds.45Item 5.Other Information.45Item6.Exhibits.46Signatures.47 PART IFINANCIAL INFORMATION Quaker Chemical CorporationCondensed Consolidated Statements of Operations(Unaudited; Dollars in thousands, except per share data) Quaker Chemical CorporationCondensed Consolidated Statements of Comprehensive Income(Unaudited; Dollars in thousands) Quaker Chemical CorporationCondensed Consolidated Balance Sheets(Unaudited; Dollars in thousands, except par value) Quaker Chemical CorporationCondensed Consolidated Statements of Cash Flows(Unaudited; Dollars in thousands) Quaker Chemical CorporationCondensed Consolidated Statements of Changes in Equity(Unaudited; Dollars in thousands, except per share amounts) Quaker Chemical CorporationNotes to Condensed Consolidated Financial Statements(Unaudited; Dollars in thousands, except per share amounts, unless otherwise stated) Note 1Basis of Presentation and Description of BusinessNote 2Business AcquisitionsNote 3Recently Issued Accounting StandardsNote 4Business SegmentsNote 5Net Sales and Revenue RecognitionNote 6LeasesNote 7Restructuring and Related ActivitiesNote 8Share-Based CompensationNote 9Pension and Other Postretirement BenefitsNote 10Other Income(Expense), netNote 11Income TaxesNote 12Earnings Per ShareNote 13Goodwill and Other Intangible AssetsNote 14DebtNote 15Accumulated Other Comprehensive IncomeNote 16Fair Value MeasurementsNote 17Hedging ActivitiesNote 18Commitments and Contingencies Quaker Chemical CorporationNotes to Condensed Consolidated Financial Statements(Unaudited; Dollars in thousands, except per share amounts, unless otherwise stated) Note 1 – Basis of Presentation and Description of Business As used in these Notes to Condensed Consolidated Financial Statements of this Quarterly Report on Form 10-Q for the periodended June30, 2026 (the “Repor