Joseph P. Hazelton - 30 May 2025 Form 4 Insider Report for DYADIC INTERNATIONAL INC (DYAI)

Role: President and COO
Signature: /s/ Ping Rawson, attorney-in-fact
Issuer symbol: DYAI
Transactions as of: 30 May 2025
Net transactions value: $0
Form type: 4
Filing time: 06 Jun 2025, 11:16:59 UTC
Previous filing: 07 Jan 2025
Next filing: 05 Aug 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Hazelton Joseph P	President and COO	C/O DYADIC INTERNATIONAL, INC., 1044 NORTH U.S. HIGHWAY ONE, SUITE 201, JUPITER	/s/ Ping Rawson, attorney-in-fact	03 Jun 2025	0001892990

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	DYAI	Stock Option	Award	$0	+25,000		$0.000000	25,000	30 May 2025	Common Stock	25,000	$1.04	Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Granted as part of additional compensation for Mr. Hazelton's new role as President.
F2	This option vests in four equal installments beginning on the first anniversary of the date of grant.