Note 8 - Subsequent Events	12 Months Ended
Dec. 31, 2023
Notes to Financial Statements
Subsequent Events [Text Block]	Note 8: Subsequent Events For purpose of disclosure in the consolidated financial statements, the Company has evaluated subsequent events through March 28, 2024, the date the consolidated financial statements were available to be issued. Except for items mentioned in the notes, and as discussed below, management is not aware of any material events that have occurred subsequent to the balance sheet date that would require adjustment to, or disclosure in the accompanying financial statements. 2024 Annual Grants On January 2, 2024, the Company granted an annual stock option award with an exercise price of $1.59, including: (a) 387,500 stock options granted to executives and key personnel, vesting upon one year anniversary, or annually in equal installments over four years, (b) 352,500 stock options granted to members of the Board of Directors, vesting upon one year anniversary, (c) 17,600 stock options granted to employees, vesting annually in equal installments over four years, and (d)15,000 stock options granted to a consultant, vesting upon one year anniversary. On January 2, 2024, the Company granted 141,510 restricted stock units, vesting upon one year anniversary, to the Board of Directors as a result of reduction in director cash compensation of 2024. The grant of these RSUs has been approved by the Compensation Committee of the Board of Directors in December 2023. On March 11, 2024, the Compensation Committee of the Board of Directors approved and granted an aggregate of 212,709 restricted stock units, vested in full, to executives and key personnel in lieu of cash bonus earned for the year ended December 31, 2023. Senior Secured Convertible Promissory Notes On March 8, 2024, the Company entered into a securities purchase agreement (the “Securities Purchase Agreement”) pursuant to which the Company issued 8.0% Senior Secured Convertible Promissory Notes due March 8, 2027 in an aggregate principal amount of $6.0 million (the “Convertible Notes”). The purchasers of the Convertible Notes include immediate family members and family trusts related to Mark Emalfarb, our President and Chief Executive Officer and a member of our Board of Directors, including The Francisco Trust U/A/D February 28, 1996, an existing holder of more than 5% of our outstanding common stock, (collectively, the “Purchasers”). The Convertible Notes were sold in a private placement in reliance on the exemption from registration provided by Section 4(a)(2) of the Securities Act of 1933, as amended. The net proceeds from the sale of the Convertible Notes, after deducting offering expenses, will be approximately $5,850,000. The Company intends to use the net proceeds from the offering of the Convertible Notes for working capital and general corporate purposes. The Convertible Notes will be senior, secured obligations of the Company and its affiliates, and interest will be payable quarterly in cash on the principal amount equal to 8% per annum, and guaranteed by Dyadic International (USA), Inc. under a subsidiary guarantee for the benefit of the holders of the Convertible Notes (each such holder, a “Holder”). The Convertible Notes will mature on March 8, 2027, unless earlier converted or redeemed in accordance with the terms of the Convertible Notes. The Convertible Notes are secured by a first priority lien on substantially all assets of the Company and its subsidiary, Dyadic International (USA), Inc., pursuant to the Security Agreement (as defined below). The Convertible Notes are convertible into shares of the Company’s common stock, in whole or in part, at the option of the Holders at any time, based on an initial conversion price of $1.79 per share of common stock, subject to adjustment in certain circumstances; provided that the Company shall not effect any Conversion of a Note and the Holder thereof shall not have any right to convert any portion of such Note to the extent that, after giving effect to such conversion, such Holder would beneficially own shares of the company in excess of the limits provided in the applicable Convertible Notes; provided further that the Company shall not issue any common stock pursuant to the terms of the Convertible Notes if such issuance would exceed 19.99% of the Company’s issued and outstanding Common Stock on date of the Purchase Agreement or otherwise exceed the aggregate number of shares of Common Stock which the Company may issue without breaching the Company’s obligations under the rules or regulations of Nasdaq. The Holders may require the Company to redeem all or any part of the Convertible Notes on a redemption date falling on any of the 18, 21, 24, 27, 30, and 33-month anniversaries of the original issue date of the Convertible Notes (any such date, a “Redemption Date”) upon not less than 60 calendar days written notice prior to the applicable Redemption Date. The Company may also elect to redeem all or any part of the Convertible Notes on a Redemption Date upon not less than 60 calendar days written notice prior to the applicable Redemption Date. The Convertible Notes contain customary terms and covenants and customary events of default ("Events of Default”). Upon the occurrence of any Event of Default, at the Holder’s election, the outstanding principal amount of the applicable Convertible Notes, plus accrued but unpaid interest, liquidated damages, and other amounts owing in respect thereof through the date of acceleration, shall become immediately due and payable. After the occurrence of any Event of Default that results in the eventual acceleration of any Note, the interest rate on such Note shall accrue at an interest rate equal to 18% per annum (with a credit for any “unused” guaranteed interest). The Securities Purchase Agreement also contains certain affirmative and negative covenants (including, without limitation, restrictions on our ability to incur indebtedness, permit liens, make dividends or certain debt payments or consummate certain affiliate transactions) and customary representations and warranties of the Company and the Purchasers, indemnification obligations of the Company, termination provisions, and other obligations and rights of the parties. The Company also entered into a registration rights agreement (the “Registration Rights Agreement”) with the Purchasers, pursuant to which the Company has agreed to register under the Securities Act any common stock of the Company issuable upon conversion of the Convertible Notes. The Company also entered into a security agreement (the “Security Agreement”) with the Purchasers, pursuant to which the Company granted the Purchasers a continuing security interest in certain collateral to secure the full and prompt payment, performance and observance of all present and future indebtedness, obligations, liabilities and agreements of any kind of the Company to the Purchasers arising under or in connection with the Convertible Notes. Dyadic International (USA), Inc., a subsidiary of the Company (the “Guarantor”) also entered into a subsidiary guarantee (the “Subsidiary Guarantee”) with the Purchasers, pursuant to which the Guarantor has guaranteed to the Purchasers the prompt and complete payment and performance when due of the obligations under the Securities Purchase Agreement.

Note 8 - Subsequent Events

12 Months Ended

Dec. 31, 2023

Note 8: Subsequent Events

For purpose of disclosure in the consolidated financial statements, the Company has evaluated subsequent events through March 28, 2024, the date the consolidated financial statements were available to be issued. Except for items mentioned in the notes, and as discussed below, management is not aware of any material events that have occurred subsequent to the balance sheet date that would require adjustment to, or disclosure in the accompanying financial statements.

2024 Annual Grants

On January 2, 2024, the Company granted an annual stock option award with an exercise price of $1.59, including: (a) 387,500 stock options granted to executives and key personnel, vesting upon one year anniversary, or annually in equal installments over four years, (b) 352,500 stock options granted to members of the Board of Directors, vesting upon one year anniversary, (c) 17,600 stock options granted to employees, vesting annually in equal installments over four years, and (d)15,000 stock options granted to a consultant, vesting upon one year anniversary.

On January 2, 2024, the Company granted 141,510 restricted stock units, vesting upon one year anniversary, to the Board of Directors as a result of reduction in director cash compensation of 2024. The grant of these RSUs has been approved by the Compensation Committee of the Board of Directors in December 2023.

On March 11, 2024, the Compensation Committee of the Board of Directors approved and granted an aggregate of 212,709 restricted stock units, vested in full, to executives and key personnel in lieu of cash bonus earned for the year ended December 31, 2023.

Senior Secured Convertible Promissory Notes

On March 8, 2024, the Company entered into a securities purchase agreement (the “Securities Purchase Agreement”) pursuant to which the Company issued 8.0% Senior Secured Convertible Promissory Notes due March 8, 2027 in an aggregate principal amount of $6.0 million (the “Convertible Notes”). The purchasers of the Convertible Notes include immediate family members and family trusts related to Mark Emalfarb, our President and Chief Executive Officer and a member of our Board of Directors, including The Francisco Trust U/A/D February 28, 1996, an existing holder of more than 5% of our outstanding common stock, (collectively, the “Purchasers”). The Convertible Notes were sold in a private placement in reliance on the exemption from registration provided by Section 4(a)(2) of the Securities Act of 1933, as amended. The net proceeds from the sale of the Convertible Notes, after deducting offering expenses, will be approximately $5,850,000. The Company intends to use the net proceeds from the offering of the Convertible Notes for working capital and general corporate purposes.

The Convertible Notes will be senior, secured obligations of the Company and its affiliates, and interest will be payable quarterly in cash on the principal amount equal to 8% per annum, and guaranteed by Dyadic International (USA), Inc. under a subsidiary guarantee for the benefit of the holders of the Convertible Notes (each such holder, a “Holder”).

The Convertible Notes will mature on March 8, 2027, unless earlier converted or redeemed in accordance with the terms of the Convertible Notes. The Convertible Notes are secured by a first priority lien on substantially all assets of the Company and its subsidiary, Dyadic International (USA), Inc., pursuant to the Security Agreement (as defined below).

The Convertible Notes are convertible into shares of the Company’s common stock, in whole or in part, at the option of the Holders at any time, based on an initial conversion price of $1.79 per share of common stock, subject to adjustment in certain circumstances; provided that the Company shall not effect any Conversion of a Note and the Holder thereof shall not have any right to convert any portion of such Note to the extent that, after giving effect to such conversion, such Holder would beneficially own shares of the company in excess of the limits provided in the applicable Convertible Notes; provided further that the Company shall not issue any common stock pursuant to the terms of the Convertible Notes if such issuance would exceed 19.99% of the Company’s issued and outstanding Common Stock on date of the Purchase Agreement or otherwise exceed the aggregate number of shares of Common Stock which the Company may issue without breaching the Company’s obligations under the rules or regulations of Nasdaq.

The Holders may require the Company to redeem all or any part of the Convertible Notes on a redemption date falling on any of the 18, 21, 24, 27, 30, and 33-month anniversaries of the original issue date of the Convertible Notes (any such date, a “Redemption Date”) upon not less than 60 calendar days written notice prior to the applicable Redemption Date. The Company may also elect to redeem all or any part of the Convertible Notes on a Redemption Date upon not less than 60 calendar days written notice prior to the applicable Redemption Date.

The Convertible Notes contain customary terms and covenants and customary events of default ("Events of Default”). Upon the occurrence of any Event of Default, at the Holder’s election, the outstanding principal amount of the applicable Convertible Notes, plus accrued but unpaid interest, liquidated damages, and other amounts owing in respect thereof through the date of acceleration, shall become immediately due and payable. After the occurrence of any Event of Default that results in the eventual acceleration of any Note, the interest rate on such Note shall accrue at an interest rate equal to 18% per annum (with a credit for any “unused” guaranteed interest).

The Securities Purchase Agreement also contains certain affirmative and negative covenants (including, without limitation, restrictions on our ability to incur indebtedness, permit liens, make dividends or certain debt payments or consummate certain affiliate transactions) and customary representations and warranties of the Company and the Purchasers, indemnification obligations of the Company, termination provisions, and other obligations and rights of the parties.

The Company also entered into a registration rights agreement (the “Registration Rights Agreement”) with the Purchasers, pursuant to which the Company has agreed to register under the Securities Act any common stock of the Company issuable upon conversion of the Convertible Notes.

The Company also entered into a security agreement (the “Security Agreement”) with the Purchasers, pursuant to which the Company granted the Purchasers a continuing security interest in certain collateral to secure the full and prompt payment, performance and observance of all present and future indebtedness, obligations, liabilities and agreements of any kind of the Company to the Purchasers arising under or in connection with the Convertible Notes.

Dyadic International (USA), Inc., a subsidiary of the Company (the “Guarantor”) also entered into a subsidiary guarantee (the “Subsidiary Guarantee”) with the Purchasers, pursuant to which the Guarantor has guaranteed to the Purchasers the prompt and complete payment and performance when due of the obligations under the Securities Purchase Agreement.