Aurinia Pharmaceuticals: Of This Report, Including Exhibit 99.1 Attached Hereto, Is Furnished Pursuant To Item 7.01 Of Form 8k And Shall Not Be Deemed “filed” For Purposes Of Section 18 Of The Securities Exchange Act Of 1934, As Amended, Or Subject To The Liabilities Of That Section. The Information Shall Not Be Deemed Incorporated By Reference Into Any Other Filing With The Sec Made By Aurinia Regardless Of Any General Incorporation Language In Such Filing, Except As Set Forth By Specific Reference In Such Filing, Financial Statements And Exhibits

Item 7.01 of this report, including Exhibit 99.1 attached hereto, is furnished pursuant to Item 7.01 of Form 8-K and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or subject to the liabilities of that section. The information shall not be deemed incorporated by reference into any other filing with the SEC made by Aurinia regardless of any general incorporation language in such filing, except as set forth by specific reference in such filing. Item 9.01Financial Statements and Exhibits(d) Exhibits.Exhibit No.Description2.1*Agreement and Plan of Merger, dated as of March 30, 2026, by and among Kezar Life Sciences, Inc., Aurinia Pharma U.S., Inc., Aurinia Merger Sub, Inc. and, solely for purposes of Section 10.13, Aurinia Pharmaceuticals Inc.10.1Form of Tender and Support Agreement, dated as of March 30, 2026, by and among Aurinia Pharma U.S., Inc., Aurinia Merger Sub, Inc., Kezar Life Sciences, Inc. and the stockholders party thereto.99.1Joint press release issued by Aurinia Pharmaceuticals Inc. and Kezar Life Sciences, Inc., dated March 30, 2026104Cover Page Interactive Data File (the cover page XBRL tags are embedded within the Inline XBRL document)*Certain annexes, exhibits and schedules have been omitted pursuant to Item 601(a)(5) or Item 601(b)(2) of Regulation S-K. Aurinia agrees to furnish supplementally a copy of any omitted exhibit or schedule to the SEC upon request; provided, however, that Aurinia may request confidential treatment pursuant to Rule 24b-2 of the Exchange Act for any schedule so furnished.Cautionary Note Regarding Forward-Looking Statements This communication includes forward-looking statements that are subject to risks, uncertainties, and other factors that could cause actual results to differ materially from those expressed or implied by the forward-looking statements. All statements, other than statements of historical fact, are generally forward-looking statements, including all statements regarding the intent, belief, or expectations of Aurinia and its management. These forward-looking statements typically can be identified by words such as “believe,” “expect,” “estimate,” “predict,” “target,” “potential,” “likely,” “continue,” “ongoing,” “could,” “should,” “intend,” “may,” “might,” “plan,” “seek,” “anticipate,” “project” and similar expressions, as well as variations or negatives of these words. Forward-looking statements include, without limitation, statements regarding the proposed transaction, similar transactions, prospective performance, future plans, events, expectations, objectives, opportunities, and the outlook for the Company or Aurinia; the expected timing of the completion of the transaction; the ability to complete the transaction considering the various closing conditions; and the accuracy of any assumptions underlying any of the foregoing. Investors are cautioned that any such forward-looking statements are not guarantees of future performance and involve risks and uncertainties; accordingly, investors are cautioned not to place undue reliance on forward-looking statements. Actual results may differ materially due to several factors. Factors that could cause future results to differ materially include: uncertainties as to the timing of the Offer and Merger; uncertainties as to how many of the Company’s stockholders will tender their stock in the Offer; the possibility that various closing conditions for the transaction may not be satisfied or waived, including that the Company does not satisfy the minimum closing net cash condition or that a governmental entity may prohibit or delay the consummation of the transaction; the occurrence of any event, change, or other circumstance that could give rise to the termination of the Merger Agreement, including circumstances requiring the Company to pay a termination fee pursuant to the Merger Agreement; the ability of the parties to consummate the proposed Transaction on a timely basis or at all; significant transaction costs; the risk that activities related to the CVR Agreement may not result in any value to the Company’s stockholders; the possibility that competing offers will be made; the risk that any stockholder litigation in connection with the proposed Transactions may result in significant costs of defense, indemnification and liability; risks of unexpected costs, delays, or other unexpected hurdles; and other factors as set forth in Aurinia’s Annual Report on Form 10-K filed with the SEC on February 26, 2026, and other reports filed with the SEC. The forward-looking statements in this communication speak only as of the date of this communication. Aurinia undertakes no obligation to update any forward-looking statement, whether as a result of new information, future developments, or otherwise, except as may be required by applicable law.Important Information about the Offer and Where to Find ItThe Offer for the Shares of Kezar referenced in this Current Report on Form 8-K has not yet commenced. This Current Report on Form 8-K is for informational purposes only, is not a recommendation and is neither an offer to purchase nor a solicitation of an offer to sell any securities, nor is it a substitute for the Offer materials that the Buyer Entities will file with the SEC upon the commencement of the Offer. The solicitation and offer to buy the Shares of Kezar will only be made pursuant to the Offer materials that Parent and Merger Sub will file with the SEC. At the time the Offer is commenced, the Buyer Entities will file a tender offer statement on Schedule TO, and, thereafter, Kezar will file a Solicitation/Recommendation Statement on Schedule 14D-9 with the SEC with respect to the Offer. THE OFFER MATERIALS (INCLUDING AN OFFER TO PURCHASE, A RELATED LETTER OF TRANSMITTAL AND CERTAIN OTHER OFFER DOCUMENTS) AND THE SOLICITATION/RECOMMENDATION STATEMENT ON SCHEDULE 14D-9 WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED ACQUISITION AND THE PARTIES THERETO. INVESTORS AND STOCKHOLDERS OF THE COMPANY ARE URGED TO READ THESE DOCUMENTS CAREFULLY WHEN THEY BECOME AVAILABLE (AS EACH MAY BE AMENDED OR SUPPLEMENTED FROM TIME TO TIME) BECAUSE THEY WILL EACH CONTAIN IMPORTANT INFORMATION THAT INVESTORS AND STOCKHOLDERS SHOULD CONSIDER BEFORE MAKING ANY DECISION REGARDING TENDERING THEIR SHARES. The Offer to Purchase, the related Letter of Transmittal and certain other Offer documents, as well as the Solicitation/Recommendation Statement on Schedule 14D-9, will be made available to all holders of Shares of Kezar at no expense to them at Kezar’s website at ir.kezarlifesciences.com, or Aurinia’s website at https://www.auriniapharma.com/investors and (once they become available) will be mailed to Kezar’s stockholders free of charge. The information contained in, or that can be accessed through, Kezar’s or Aurinia’s website is not a part of, or incorporated by reference in, this filing. The Offer materials and the Solicitation/Recommendation Statement on Schedule 14D-9 will be made available to the public for free at the SEC’s website at www.sec.gov. In addition to the Offer to Purchase, the related Letter of Transmittal and certain other Offer documents, as well as the Solicitation/Recommendation Statement on Schedule 14D-9, Kezar and Aurinia file annual, quarterly and current reports, proxy statements and other information with the SEC. You may read any reports, statements or other information filed by Kezar or Aurinia with the SEC for free on the SEC’s website at www.sec.gov or on Kezar’s website at ir.kezarlifesciences.com, or Aurinia’s website at https://www.auriniapharma.com/investors.SIGNATURESPursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.Date: April 3, 2026AURINIA PHARMACEUTICALS INC.By:/s/ Michael HearneMichael HearneChief Financial Officer

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