FORM 10-K ☒Annual Report Pursuant to Section13 or 15(d) of the Securities Exchange Act of 1934For the fiscal year ended December 31, 2025 orTransition Report Pursuant to Section13 or 15(d) of the Securities Exchange Act of 1934 For the transition period fromto Commission file number 001-12658 ALBEMARLE CORPORATION (Exact name of registrant as specified in its charter) Virginia(State or other jurisdiction ofincorporation or organization) 54-1692118(I.R.S. EmployerIdentification No.) 4250 Congress Street, Suite 900Charlotte, North Carolina 28209(Address of principal executive offices) (Zip Code) Registrant’s telephone number, including area code: (980) -299-5700 Securities registered pursuant to Section12(b) of the Act: Name of each exchange on whichregistered Title of each class Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the SecuritiesAct.Yes☒No☐ Indicate by check mark if the registrant is not required to file reports pursuant to Section13 or Section15(d) of the Act.Yes☐No☒ Indicate by check mark whether the registrant (1)has filed all reports required to be filed by Section13 or 15(d) of the SecuritiesExchange Act of 1934 during the preceding 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 at least the past 90 days.Yes☒No☐ Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submittedpursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that theregistrant was required to submit and post such files).Yes☒No☐ Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reportingcompany, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,”and “emerging growth company” in Rule 12b-2 of the Exchange Act. (Check one): Accelerated filer☐Smaller reporting company☐Emerging growth company☐ Large accelerated filer☒Non-accelerated filer☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period forcomplying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.☐ Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectivenessof its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C.7262(b)) by the registered publicaccounting firm that prepared or issued its audit report.☒ If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of theregistrant included in the filing reflect the correction of an error to previously issued financial statements.☒ Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-basedcompensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b).☒ Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).Yes☐No☒ The aggregate market value of the voting and non-voting common equity stock held by non-affiliates of the registrant wasapproximately $7.4 billion based on the last reported sale price of common stock on June30, 2025, the last business day of the registrant’smost recently completed second quarter. Number of shares of common stock outstanding as of February4, 2026: 117,847,220 Documents Incorporated by Reference Portions of Albemarle Corporation’s definitive Proxy Statement for its 2026 Annual Meeting of Shareholders to be filed with the U.S.Securities and Exchange Commission pursuant to Regulation 14A under the Securities Exchange Act of 1934, as amended, are incorporatedby reference into Part III of this Annual Report on Form 10-K. Index to Form 10-KYear Ended December31, 2025 PART I Item1.BusinessItem1A.Risk FactorsItem 1B.Unresolved Staff CommentsItem 1C.CybersecurityItem 2.PropertiesItem 3.Legal ProceedingsItem 4.Mine Safety DisclosuresExecutive Officers of the Registrant PART II Item 5.Market for the Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of EquitySecurities56Item 6.[Reserved]57Item 7.Management’s Discussion and Analysis of Financial Condition and Results of Operations57Item 7A.Quantitative and Qualitative Disclosures About Market Risk83Item 8.Financial Statements and Supplementary Data85Item 9.Changes in and Disagreements with Accountants on Accounting and Financial Disclosure144Item9A.Controls and Procedures144Item 9B.Other Information145Item 9C.Disclosure Regarding Foreign Jurisdictions T