Dyadic International (DYAI) director gets options, RSUs and stock

Rhea-AI Filing Summary

Dyadic International director Jack Kaye reported several equity transactions on January 2, 2026. He exercised 21,552 restricted stock units, receiving the same number of common shares at $0 per share, bringing his directly held common stock to 81,201 shares. The exercised units came from awards that vested after one year of board service and were settled fully in common stock.

On the same date, Kaye received an annual grant of 67,500 stock options with a $0.94 exercise price, exercisable starting January 2, 2027 and expiring January 2, 2036. He also received an annual grant of 39,894 restricted stock units, each representing a right to one share of common stock, scheduled to be settled entirely in shares when they vest, subject to continued board service.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Kaye Jack

(Last) (First) (Middle)

C/O DYADIC INTERNATIONAL, INC.

1044 NORTH U.S. HIGHWAY ONE, SUITE 201

(Street)

JUPITER FL 33477-5094

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
DYADIC INTERNATIONAL INC [ DYAI ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
01/02/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	01/02/2026		M		21,552	A	(1)	81,201	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Unit	(1)	01/02/2026		M			21,552	(5)	(5)	Common Stock	21,552	$0	0	D
Stock Option	$0.94	01/02/2026		A(2)		67,500		01/02/2027	01/02/2036	Common Stock	67,500	$0	67,500	D
Restricted Stock Unit	(1)	01/02/2026		A(3)		39,894		(4)	(4)	Common Stock	39,894	$0	39,894	D

Explanation of Responses:

1. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

2. Annual grant of stock options.

3. Annual grant of restricted stock units.

4. The restricted stock units will be settled 100% in Issuer's common stock when vested upon the first anniversary of the date of grant, subject to continued service as a member of the board of directors.

5. The restricted stock units previously issued and vested upon the first anniversary of the date of grant, subject to continued service as a member of the board of directors, were settled 100% in Issuer's common stock.

	/s/ Ping Rawson, attorney-in-fact	01/06/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider activity did Dyadic International (DYAI) report for Jack Kaye?

Director Jack Kaye reported exercising 21,552 restricted stock units into common stock and receiving new grants of 67,500 stock options and 39,894 restricted stock units on January 2, 2026.

How many Dyadic International (DYAI) common shares does Jack Kaye hold after the Form 4 transactions?

After the reported transactions, Jack Kaye beneficially owned 81,201 shares of Dyadic International common stock directly.

What equity awards did Jack Kaye receive from Dyadic International (DYAI) on January 2, 2026?

On January 2, 2026, Jack Kaye received an annual grant of 67,500 stock options with a $0.94 exercise price and 39,894 restricted stock units, both relating to Dyadic International common stock.

When do Jack Kaye’s Dyadic International (DYAI) stock options vest and expire?

The 67,500 stock options become exercisable on January 2, 2027 and are scheduled to expire on January 2, 2036, according to the reported grant terms.

How are Jack Kaye’s restricted stock units in Dyadic International (DYAI) settled?

Each restricted stock unit represents a contingent right to receive one share of Dyadic’s common stock and is settled 100% in common stock upon vesting, subject to continued service on the board.

What does the RSU exercise in the Dyadic International (DYAI) Form 4 represent?

The Form 4 shows 21,552 restricted stock units that had previously vested being settled into 21,552 shares of Dyadic common stock at $0 per unit.