SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 (MarkOne) For thefiscal year endedDecember 31, 2024 For the transi on period from _to_ Commission File Number001-36352 AKEBIA THERAPEUTICS, INC. (Exact name of registrant as specified in its charter) Registrant’s telephone number, including area code: (617)871-2098 Securi es registered pursuant to Sec on12(g) of the Act: None Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule405 of the Securi es Act.Yes☐No☒ Indicate by check mark if the registrant is not required tofile reports pursuant to Sec on13 or 15(d) of the Act.Yes☐No☒ Indicate by check mark whether the registrant: (1)hasfiled all reports required to befiled by Sec on13 or 15(d) of the Securi es Exchange Act of 1934 during thepreceding 12months (or for such shorter period that the registrant was required tofile such reports), and (2)has been subject to suchfiling requirements for the past90days.Yes☒No☐ Indicate by check mark whether the registrant has submi ed electronically every Interac ve Data File required to be submi ed pursuant to Rule405 of Regula onS-T(§ 232.405 of this chapter) during the preceding 12months (or for such shorter period that the registrant was required to submit suchfiles).Yes☒No☐ Indicate by check mark whether the registrant is a large acceleratedfiler, an acceleratedfiler, a non-acceleratedfiler, a smaller repor ng company, or an emerginggrowth company. See the defini ons of “large acceleratedfiler,” “acceleratedfiler,” “smaller repor ng company,” and “emerging growth company” in Rule12b-2 of theExchange Act. If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transi on period for complying with any new or revisedfinancial accoun ng standards provided pursuant to Sec on 13(a) of the Exchange Act.☐ Indicate by check mark whether the registrant hasfiled a report on and a esta on to its management’s assessment of the effec veness of its internal control overfinancial repor ng under Sec on 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accoun ngfirm that prepared or issued its audit report.☒ If securi es are registered pursuant to Sec on 12(b) of the Act, indicate by check mark whether thefinancial statements of the registrant included in thefiling reflectthe correc on of an error to previously issuedfinancial statements.☐ Indicate by check mark whether any of those error correc ons are restatements that required a recovery analysis of incen ve-based compensa on received by any ofthe registrant’s execu ve officers during the relevant recovery period pursuant to § 240.10D-1(b).☐ Indicate by check mark whether registrant is a shell company (as defined in Rule12b-2 of the Exchange Act).Yes☐No☒ The aggregate market value of the vo ng and non-vo ng common equity held by non-affiliates of the registrant, based on the closing price of the registrant’s CommonStock on The Nasdaq Capital Market on June 28, 2024, was $210,916,948. The number of shares of registrant’s Common Stock outstanding as of March10, 2025 was236,231,057. DOCUMENTS INCORPORATED BY REFERENCE The registrant intends tofile a defini ve proxy statement pursuant to Regula on 14A in connec on with its 2025Annual Mee ng of Stockholders within 120 days a erthe end of the registrant’sfiscal year ended December31, 2024. Por ons of the proxy statement are incorporated by reference into PartIII of this Annual Report onForm 10-K. Akebia Therapeu cs, Inc.Form 10-KFor the Year Ended December 31, 2024 TABLE OF CONTENTS PageCau onary Note Regarding Forward Looking Statements2Risk Factors Summary4PART IItem1.Business6Item1A.Risk Factors49Item1B.Unresolved StaffComments105Item 1C.Cybersecurity105Item2.Proper es107Item3.Legal Proceedings107Item4.Mine Safety Disclosures107PART IIItem5.Market for Registrant’s Common Equity, Related Stockholder Ma ers and Issuer Purchases of Equity Securi es108Item6.[Reserved]108Item7.Management’s Discussionand Analysis of Financial Condi on and Results of Opera ons108Item7A.Quan ta ve and Qualita ve Disclosures About Market Risk122Item8.Financial Statements and Supplementary Data123Item9.Changes in and Disagreements with Accountants on Accoun ng and Financial Disclosure164Item9A.Controls and Procedures165Item9B.Other Informa on167Item 9C.Disclosure Regarding Foreign Jurisdic ons that Prevent Inspec ons167PART IIIItem10.Directors, Execu ve Officers and Corporate Governance168Item11.Execu ve Compensa on168Item12.Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Ma ers168Item13.Certain Rela onships and Related Transac ons, and Director Independence168Item14.Principal Accountant Fees and Services168PARTIV169Item15.Exhibits and Financial Statement Schedules169Item16.Form 10-K Summary178SIGNATURES179 In this Annual Report on Form 10-K, orForm 10-K, unless otherwise stated or the context otherwise requires, references