Material Agreement Form 8 K

Item 1.01.Entry into a Material Definitive Agreement.

On October 4, 2024, Dyadic International, Inc. (the "Company") entered into an amendment (the "Amendment") to the Form of Senior Secured Convertible Promissory Note due March 8, 2027 (the "Convertible Notes"). Pursuant to the Amendment, (i) the conversion price upon which the Convertible Notes will be convertible into shares of the Company's common stock now is $1.40 per share of common stock, and (ii) the Redemption Date (as defined in the Amendment) will fall on any of the 26, 29 and 32-month anniversaries of the original issue date of the Convertible Notes.

The foregoing description of the Amendment is only a summary of the material terms thereof, does not purport to be complete and is qualified in its entirety by reference to the full text of the Amendment, a copy of which is attached as Exhibit 4.1 to this Current Report on Form 8-K and is incorporated herein by reference.