KAISER ALUMINUM CORP 10-Q

Item 5. Other Information None. 39 Item 6. Exhibits Exhibit Number Description 10.1 Amended and Restated Severance Agreement dated March 5, 2021 between the Company and John M. Donnan (incorporated by reference to Exhibit 10.1 to the Current Report on Form 8-K, filed by the Company on March 11, 2021, File No. 001-09447). 10.2 Kaiser Aluminum Fabricated Products 2021 Short-Term Incentive Plan For Key Managers Summary (incorporated by reference to Exhibit 10.2 to the Current Report on Form 8-K, filed by the Company on March 11, 2021, File No. 001-09447). 10.3 Kaiser Aluminum Fabricated Products 2021-2023 Long-Term Incentive Plan For Key Managers Summary (incorporated by reference to Exhibit 10.3 to the Current Report on Form 8-K, filed by the Company on March 11, 2021, File No. 001-09447). 10.4 Ground Lease Agreement dated as of March 31, 2021 by and between Kaiser Aluminum Warrick, LLC and Warrick Real Estate LLC, solely as to Sections 2.2, 17 and 33.2, Alcoa Power Generating Inc. and Warrick Newco LLC (incorporated by reference to Exhibit 10.1 to the Current Report on Form 8-K, filed by the Company on April 1, 2021, File No. 001-09447) . *31.1 Certification of Keith A. Harvey pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. *31.2 Certification of Neal E. West pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. *32.1 Certification of Keith A. Harvey pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. *32.2 Certification of Neal E. West pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. * 101.INS Inline XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document. * 101.SCH Inline XBRL Taxonomy Extension Schema * 101.CAL Inline XBRL Taxonomy Extension Calculation * 101.DEF Inline XBRL Taxonomy Extension Definition * 101.LAB Inline XBRL Taxonomy Extension Label * 101.PRE Inline XBRL Taxonomy Extension Presentation * 104 Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101). * Filed herewith. 40 SIGNATURES Pursuant 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 thereunto duly authorized. KAISER ALUMINUM CORPORATION /s/ Neal E. West Neal E. West Executive Vice President and Chief Financial Officer (Principal Financial Officer) /s/ Jennifer Huey Jennifer Huey Vice President and Chief Accounting Officer (Principal Accounting Officer) Date: May 5, 2021 41