Filing Details

---

SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549

SCHEDULE 13G
(Rule 13d-102)

INFORMATION TO BE INCLUDED IN THE STATEMENTS FILED PURSUANT TO RULES 13d-1(b), (c), AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(b)

(Amendment No. 1)*

Dyadic International, Inc.
(Name of Issuer)

Common Stock, par value $0.001 per share
(Title of Class of Securities)

26745T101
(CUSIP Number)

December 31, 2018
(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

[  ]    Rule 13d-1(b)
[x]   Rule 13d-1(c)
[  ]    Rule 13d-1(d)

*The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

SCHEDULE 13G

CUSIP NO. 26745T101

Page 2 of 6

SCHEDULE 13G

CUSIP NO. 26745T101

Page 3 of 6

SCHEDULE 13G

CUSIP NO. 26745T101

Page 4 of 6

Item 1(a).

Name of Issuer:

Dyadic International, Inc. (the "Issuer")

Item 1(b).

Address of Issuer's Principal Executive Offices:

140 Intracoastal Pointe Drive, Suite 404
Jupiter, Florida 33477

Items 2(a), (b) and (c).

Name of Persons Filing, Address of Principal Business Office and Citizenship:

This Amendment No. 1 to Schedule 13G is being filed on behalf of Pinnacle Family Office Investments, L.P. and Barry M. Kitt, as joint filers (collectively, the "Reporting Persons").

The Reporting Persons have entered into a Joint Filing Agreement, a copy of which is filed with this Amendment No. 1 to Schedule 13G as Exhibit 1, pursuant to which the Reporting Persons have agreed to file this Amendment No. 1 to Schedule 13G jointly in accordance with the provisions of Rule 13d-1(k) of the Securities Exchange Act of 1934, as amended.

The principal business office of the Reporting Persons is 5910 North Central Expressway, Suite 1475, Dallas, TX 75206. For citizenship, see Item 4 of each cover page.

Item 2(d).

Title of Class of Securities:

Common Stock, par value $0.001 per share (the "Common Stock")

Item 2(e).

CUSIP Number:

26745T101

Item 3.	Not applicable
Item 4.	Ownership.

	(a)	Amount beneficially owned:
		1,749,267 shares of Common Stock*
	(b)	Percent of class:
		Based on 26,713,486 shares of Common Stock of the Issuer outstanding as of December 31, 2018, the Reporting Persons hold 6.5% of the issued and outstanding Common Stock of the Issuer.

SCHEDULE 13G

CUSIP NO. 26745T101

Page 5 of 6

	(c)	Number of shares to which such person has:
		(i)	Sole power to vote or direct the vote: 1,749,267 shares of Common Stock*
		(ii)	Shared power to vote or direct the vote: 0
		(iii)	Sole power to dispose or to direct the disposition of: 1,749,267 shares of Common Stock*
		(iv)	Shared power to dispose of or direct the disposition of: 0

*This statement is filed on behalf of Pinnacle Family Office Investments, L.P. (Pinnacle) and Barry M. Kitt. Pinnacle Family Office, LLC (Pinnacle Family) is the general partner of Pinnacle. Mr. Kitt is the manager of Pinnacle Family. Mr. Kitt may be deemed to be the beneficial owner of the shares of Common Stock beneficially owned by Pinnacle. Mr. Kitt expressly disclaims beneficial ownership of all shares of Common Stock beneficially owned by Pinnacle.

Item 5.	Ownership of Five Percent or Less of a Class.
	Not applicable
Item 6.	Ownership of More than Five Percent on Behalf of Another Person.
	Not applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported By the Parent Holding Company.
	Not applicable
Item 8.	Identification and Classification of Members of the Group.
	Not applicable
Item 9.	Notice of Dissolution of a Group.
	Not applicable
Item 10.	Certification.

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

SCHEDULE 13G

CUSIP NO. 26745T101

Page 6 of 6

SIGNATURE

     After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Dated: January 25, 2019

	PINNACLE FAMILY OFFICE INVESTMENTS, L.P.
	By: Pinnacle Family Office, LLC, its general partner
	By: /s/ Barry M. Kitt
	Barry M. Kitt, its manager
	/s/ Barry M. Kitt
	Barry M. Kitt

SCHEDULE 13G

CUSIP NO. 26745T101

Exhibit 1

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, the undersigned agree to the joint filing on behalf of each of them of a statement on Schedule 13G (including amendments thereto) with respect to 1,749,267 shares of Common Stock of Dyadic International, Inc. and further agree that this Joint Filing Agreement shall be included as an exhibit to such joint filings.

The undersigned further agree that each party hereto is responsible for the timely filing of such Schedule 13G and any amendments thereto, and for the completeness and accuracy of the information concerning such party contained therein; provided, however, that no party is responsible for the completeness or accuracy of the information concerning any other party making the filing, unless such party knows or has reason to believe that such information is inaccurate.

IN WITNESS WHEREOF, the parties have executed this Joint Filing Agreement on January 25, 2019.

	PINNACLE FAMILY OFFICE INVESTMENTS, L.P.
	By: Pinnacle Family Office, LLC, its general partner
	By: /s/ Barry M. Kitt
	Barry M. Kitt, its manager
	/s/ Barry M. Kitt
	Barry M. Kitt

---