DYADIC INTERNATIONAL INC 10-Q

Item 5. Other Information Insider Trading Arrangements For the quarter ended March 31, 2024, none of our directors or officers (as defined in Section 16 of the Securities Exchange Act of 1934, as amended) adopted or terminated a “Rule 10b5 - 1 trading arrangement” or a “non-Rule 10b5 - 1 trading arrangement” (each as defined in Item 408 (a) and (c), respectively, of Regulation S-K). Item 6. Exhibits The following Exhibits are filed as part of this report pursuant to Item 601 of Regulation S-K: Incorporated by Reference Exhibit No. Description of Exhibit Form Original No. Date Filed Filed Herewith 3.1 Restated Certificate of Incorporation dated November 1, 2004 13-12G 3.1 January 14, 2019 3.2 Third Amended and Restated Bylaws dated March 28, 2023 8-K 3.1 March 29, 2023 4.1 Form of Senior Secured Convertible Promissory Note due March 8, 2027 8-K 4.1 March 11, 2024 10.1 Securities Purchase Agreement (1) 8-K 10.1 March 11 2024 10.2 Registration Rights Agreement (1) 8-K 10.2 March 11, 2024 10.3 Security Agreement (1) 8-K 10.3 March 11, 2024 10.4 Subsidiary Guarantee (1) 8-K 10.4 March 11, 2024 31.1 Certification of Principal Executive Officer of Dyadic Pursuant to Exchange Act Rules 13a-14(a) and 15d-14(a), as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 x 31.2 Certification of Principal Financial Officer of Dyadic Pursuant to Exchange Act Rules 13a-14(a) and 15d-14(a), as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 x 32.1 Certification of Principal Executive Officer of Dyadic Pursuant to18 U.S.C Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (2) 32.2 Certification of Principal Financial Officer of Dyadic Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (2) 101.INS Inline XBRL Instance Document 101.SCH Inline XBRL Taxonomy Extension Schema Document 101.CAL Inline XBRL Taxonomy Extension Calculation Linkbase Document 101.DEF Inline XBRL Taxonomy Extension Definition Linkbase Document 101.LAB Inline XBRL Taxonomy Extension Labels Linkbase Document 101.PRE Inline XBRL Taxonomy Extension Presentation Linkbase Document 104 Cover Page Interactive Data File (embedded within the Inline XBRL and contained in Exhibit 101) (1) Portions of this exhibit have been omitted pursuant to Item 601(b)(10) of Regulation S-K. The Company hereby undertakes to provide on a supplemental basis an unredacted copy of the exhibit to the SEC upon request. (2) Furnished herewith. 26 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. DYADIC INTERNATIONAL, INC. May 14, 2024 By: /s/ Mark A. Emalfarb Mark A. Emalfarb President and Chief Executive Officer (Principal Executive Officer) May 14, 2024 By: /s/ Ping W. Rawson Ping W. Rawson Chief Financial Officer (Principal Financial Officer and Principal Accounting Officer) 27