UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Title of each class Trading Symbol(s) Name of each exchange on which registered Common Stock, par value $0.001 per share DYAI The NASDAQ Stock Market LLC FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2019 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ___ ...

Dyadic International, Inc. (NASDAQ:DYAI) Q2 2019 Earnings Conference Call August 13, 2019 5:00 PM ET Company Participants Ping Rawson - CFO Mark Emalfarb - President and CEO Matthew Jones - Chief Commercial Officer Ronen Tchelet - Chief Scientific Officer Conference Call Participants John Vandermosten - Zacks Small Capital Research Ahu Demir - Noble Capital Dick Williams - Williams Research Group Operator Good afternoon, ladies and gentlemen, and thank you for holding. Welcome to Dyadic International's Seco ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2019 o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from _____ to ______ Commission File Number: 000-55264 DYADIC® DYADIC INTERNATIONAL, INC. (Exact Name of Registrant as Specified in its Charter) State or Other Jurisdi ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2019 o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from _____ to ______ Commission File Number: 000-55264 DYADIC INTERNATIONAL, INC. (Exact Name of Registrant as Specified in its Charter) | --- | --- | |-------------- ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ý ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2018 o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from _____ to ______ Commission file number: 000-55264 DYADIC INTERNATIONAL, INC. (Exact name of registrant as specified in its charter) Delaware 45-0486747 (State or other jurisdict ...