SOLITARIO RESOURCES CORP. 10-Q

Item 5. Other Information None Item 6. Exhibits The Exhibits to this report are listed in the Exhibit Index. 25 Table of Contents 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. SOLITARIO ZINC CORP. Date August 4, 2021 By: /s/ James R. Maronick James R. Maronick Chief Financial Officer 26 Table of Contents EXHIBIT INDEX 31.1 Certification of Chief Executive Officer pursuant to SEC Rule 13a-14(a)/15d-14(a) as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 31.2 Certification of Chief Financial Officer pursuant to SEC Rule 13a-14(a)/15d-14(a) as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 32.1* Certification of Chief Executive Officer and Chief Financial Officer pursuant to 18 U.S.C Section 1350 as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. 101 The following materials from the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2021 formatted in Inline eXtensible Business Reporting Language (iXBRL): (i) Condensed Consolidated Balance Sheets as of June 30, 2021 and December 31, 2020, (ii) Condensed Consolidated Statements of Operations for the three and six months ended June 30, 2021 and 2020, (iii) Condensed Consolidated Statements of Cash Flows for the six months ended June 30, 2021 and 2020; and (iv) Notes to the Condensed Unaudited Consolidated Financial Statements. 104 Cover page Interactive Data File (formatted in iXBRL and contained in Exhibit 101) * This document is not being “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liability of that section, and shall not be deemed to be incorporated by reference into any filing under the Securities Act of 1933 of the Exchange Act. 27