Michael P. Tarnok - 20 Jun 2025 Form 4 Insider Report for DYADIC INTERNATIONAL INC (DYAI)

Role
Director
Signature
/s/ Ping Rawson, attorney-in-fact
Issuer symbol
DYAI
Transactions as of
20 Jun 2025
Net transactions value
$0
Form type
4
Filing time
24 Jun 2025, 10:34:28 UTC
Previous filing
07 Jan 2025

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Tarnok Michael P. Director C/O DYADIC INTERNATIONAL, INC., 1044 NORTH U.S. HIGHWAY ONE, SUITE 201, JUPITER /s/ Ping Rawson, attorney-in-fact 24 Jun 2025 0001413525

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction DYAI Common Stock Options Exercise +10,776 +4% 281,033 20 Jun 2025 Direct F1

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 Restricted Stock Unit Options Exercise $0 -10,776 -100% $0.000000 0 20 Jun 2025 Common Stock 10,776 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Michael P. Tarnok is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may continue.

Explanation of Responses:

Id Content
F1 The restricted stock units vested upon retirement from service as a member of the board of directors.