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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1213809	Dyadic International Inc	DYAI	Biological Products, (No Disgnostic Substances) (2836)	450486747

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1328287	A Mark Emalfarb	C/O Dyadic International, Inc. 140 Intracoastal Pointe Drive Suite 404 Jupiter FL 33477-5094	President And Ceo	Yes	Yes	Yes	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Disposition	2021-12-21	26,486	$4.33	4,308,431	No	4	S	Indirect	Through Mark A. Emalfarb Trust U/A DTD 10/1/1987
Common Stock	Disposition	2021-12-22	35,649	$4.12	4,272,782	No	4	S	Indirect	ThroughMarkAEmalfarbTrustU/A/DTD10/1/1987
Common Stock	Disposition	2021-12-23	28,767	$4.10	4,244,015	No	4	S	Indirect	ThroughMarkA.EmalfarbTrustU/A/DTD10/1/1987
Common Stock	Acquisiton	2021-12-23	150,000	$1.63	4,394,015	No	4	M	Indirect	ThroughMarkAEmalfarbTrustU/A/DTD10/1/1987

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Indirect	Through Mark A. Emalfarb Trust U/A DTD 10/1/1987
No	4	S	Indirect	ThroughMarkAEmalfarbTrustU/A/DTD10/1/1987
No	4	S	Indirect	ThroughMarkA.EmalfarbTrustU/A/DTD10/1/1987
No	4	M	Indirect	ThroughMarkAEmalfarbTrustU/A/DTD10/1/1987

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Stock Option	Disposition	2021-12-23	150,000	$0.00	150,000	$1.63

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0	2017-01-03	2022-01-03	No	4	M	Direct

Footnotes

These shares were sold to satisfy exercise price and tax withholding obligations to be funded for options expiring on January 3, 2022. As a result of the option exercises and sale transactions reported on this Form 4, the reporting person's net share ownership increased by 59,098 shares, from 4,334,917 to 4,394,015 shares of Common Stock.
The price reported in Column 4 is a weighted average price. These sold in multiple transactions at prices ranging from $4.46 to $4.28, inclusive, on December 21, 2021, $4.70 to $4.00, inclusive, on December 22, 2021, and $4.15 to $4.05, inclusive, on December 23, 2021. The reporting person undertakes to provide to Dyadic International, Inc., any security holder of Dyadic International, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding number of shares sold at each individual price within the price ranges set forth in this footnote(2) to this Form 4.
Exercise of reporting person's stock options that would other wise expire January 3, 2022.