Filing Details

CUSIP No. 26745T101

(1)

NAMES OF REPORTING PERSONS

Mark A. Emalfarb

(2)

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)
(a) ☐
(b) ☐

(3)

SEC USE ONLY

(4)

CITIZENSHIP OR PLACE OF ORGANIZATION

United States of America

Number of
Shares

(5)

SOLE VOTING POWER

5,164,015 (1)

Beneficially

Owned

(6)

SHARED VOTING POWER

0

by Each
Reporting

(7)

SOLE DISPOSITIVE POWER

5,164,015 (1)

Person With:

(8)

SHARED DISPOSITIVE POWER

0

(9)

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

5,164,015 (1)

(10)

CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
☐

(11)

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

17.9%

(12)

TYPE OF REPORTING PERSON

IN

Item 1

(a)

Name of issuer:

Dyadic International, Inc.

(b)

Address of issuer’s principal executive offices:

140 Intracoastal Pointe Drive

Suite 404

Jupiter, Florida 33477

Item 2

(a)

Name of person filing:

Mark A. Emalfarb

(b)

Address or principal business office or, if none, residence:

140 Intracoastal Pointe Drive

Suite 404

Jupiter, Florida 33477

(c)

Citizenship:

United States of America

(d)

Title of class of securities:

Common Stock, $0.001 par value

(e)

CUSIP No.:

26745T101

Item 3

If this statement is filed pursuant to Rules 13d-1(b), or 13d-2(b) or (c), check whether the person filing is a:

(a)

☐ Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);

(b)

☐ Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);

(c)

☐ Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);

(d)

☐ Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C 80a-8);

(e)

☐ An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);

(f)

☐ An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);

(g)

☐ A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);

(h)

☐ A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i)

☐ A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j)

☐ A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J);

(k)

☐ Group, in accordance with § 240.13d-1(b)(1)(ii)(K). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution: ____

Item 4

Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1.

(a)

Amount beneficially owned:

5,164,015 (1)

(b)

Percent of class:

17.9%

(c)

Number of shares as to which the person has:

(i)

Sole power to vote or direct the vote

5,164,015 (1)

(ii)

Shared power to vote or direct the vote

0

(iii)

Sole power to dispose or to direct the disposition of

5,164,015 (1)

Shared power to dispose or to direct the disposition of

Item 5

Ownership of 5 Percent or Less of a Class.

Item 6

Ownership of More than 5 Percent on Behalf of Another Person.

Item 7

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.

Item 8

Identification and Classification of Members of the Group.

Item 9

Notice of Dissolution of Group.

Item 10

Certifications.