{"url_path":"/sec/aqms/10-q/2026/item-6","section_key":"item-6","section_title":"Item 6 Exhibits**","topic":"sec","document":{"doc_type":"10-Q","doc_date":"2026-05-14","source_url":"https://www.sec.gov/Archives/edgar/data/1621832/0001437749-26-017038-index.html","accession_number":"0001437749-26-017038","cik":"0001621832","ticker":"AQMS","issuer_name":"Aqua Metals, Inc.","edgar_url":"https://www.sec.gov/Archives/edgar/data/1621832/0001437749-26-017038-index.html","primary_entity_key":"0001621832","primary_entity_name":"Aqua Metals, Inc."},"word_count":420,"has_tables":true,"body_markdown":"**Item 6. Exhibits**\n\n \n\n**Exhibit No.**\n\n**Description**\n\n**Method of Filing**\n\n \n \n\n \n\n3.1\n\n[First Amended and Restated Certificate of Incorporation of the Registrant](http://www.sec.gov/Archives/edgar/data/1621832/000161577415001419/s101283_ex3-1.htm)\n\nIncorporated by reference from the Registrant’s Registration Statement on Form S-1 filed on June 9, 2015.\n\n3.2\n\n[Third Amended and Restated Bylaws of the Registrant](http://www.sec.gov/Archives/edgar/data/1621832/000143774922001428/ex_326881.htm)\n\nIncorporated by reference from the Registrant’s Current Report on Form 8-K filed on January 21, 2022.\n\n3.3\n\n[Certificate of Amendment to First Amended and Restated Certificate of Incorporation of the Registrant](http://www.sec.gov/Archives/edgar/data/1621832/000161577415001601/s101373_ex3-3.htm)\n\nIncorporated by reference from the Registrant’s Registration Statement on Form S-1 filed on June 25, 2015.\n\n3.4\n\n[Certificate of Amendment to the First Amended and Restated Certificate of Incorporation](http://www.sec.gov/Archives/edgar/data/1621832/000162183219000043/aqms-20190331x10qexx34.htm)\n\nIncorporated by reference from the Registrant’s Quarterly Report on Form 10-Q filed on May 9, 2019\n\n3.5\n[Certificate of Amendment to the First Amended and Restated Certificate of Incorporation](http://www.sec.gov/Archives/edgar/data/1621832/000143774922017523/ex_395541.htm)\nIncorporated by reference from the Registrant’s Quarterly Report on Form 10-Q filed on July 21, 2022\n\n3.6\n[Certificate of Amendment to the First Amended and Restated Certificate of Incorporation](http://www.sec.gov/Archives/edgar/data/1621832/000143774925026499/ex_852768.htm)\nIncorporated by reference from the Registrant’s Quarterly Report on Form 10-Q filed on August 13, 2025\n\n10.1\n\n[Subordinated, Last-Out Participation Agreement, dated as of February 6, 2026, by and between the Company and GRC SPV Investments, LLC](http://www.sec.gov/Archives/edgar/data/1621832/000143774926003828/ex_918284.htm)\n\nIncorporated by reference from the Registrant’s Current Report on Form 8-K filed on February 11, 2026\n\n31.1\n\n[Certifications Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.](ex_905199.htm)\n\nFiled electronically herewith\n\n31.2\n\n[Certifications Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.](ex_905200.htm)\n\nFiled electronically herewith\n\n32.1\n\n[Certification of Principal Executive Officer and Principal Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. Section 1350).](ex_905201.htm)\n\nFiled electronically herewith\n\n101.INS\n\nInline XBRL Instance Document\n\nFiled electronically herewith\n\n101.SCH\n\nInline XBRL Taxonomy Extension Schema Document\n\nFiled electronically herewith\n\n101.CAL\n\nInline XBRL Taxonomy Extension Calculation Linkbase Document\n\nFiled electronically herewith\n\n101.LAB\n\nInline XBRL Taxonomy Extension Label Linkbase Document\n\nFiled electronically herewith\n\n101.PRE\n\nInline XBRL Taxonomy Extension Presentation Linkbase Document\n\nFiled electronically herewith\n\n101.DEF\n\nInline XBRL Taxonomy Extension Definition Linkbase Document\n\nFiled electronically herewith\n\n104\nCover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101).\n \n\n \n\n20\n\n[Table of Contents](#toc)\n\n \n\n**SIGNATURES**\n\n \n\nIn accordance with the requirements of the Exchange Act, the registrant caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.\n\n \n\n \n\n \n\n**AQUA METALS, INC.**\n\n \n\n \n\n \n\n \n\nDate:\n\nMay 14, 2026\n\nBy:\n\n/s/ *Stephen Cotton*\n\n \n\n \n\n \n\nStephen Cotton,\n\n \n\n \n\n \n\nPresident, Chief Executive Officer and Director\n(Principal Executive Officer)\n\n \n\n \n\n \n\n \n\nDate:\n\nMay 14, 2026\n\nBy:\n\n/s/ *Eric West*\n\n \n\n \n\n \n\nEric West,\n\n \n\n \n\n \n\nChief Financial Officer\n\n \n\n \n\n \n\n(Principal Financial Officer)\n\n \n\n21"}