UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

o

Rule 13d-1(b)

x

Rule 13d-1(c)

o

Rule 13d-1(d)

CUSIP No. 40108P101

Schedule 13G

1.

Name of Reporting Persons:
Castle Creek Capital Partners V, LP

2.

Check the Appropriate Box if a Member of a Group

(a)

o

(b)

o

3.

SEC Use Only

4.

Citizenship or Place of Organization:
Delaware

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power:
719,022

6.

Shared Voting Power:
0

7.

Sole Dispositive Power:
719,022

8.

Shared Dispositive Power:
0

9.

Aggregate Amount Beneficially Owned by Each Reporting Person:
719,022

10.

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

11.

Percent of Class Represented by Amount in Row (9):
16.2% (1)

12.

Type of Reporting Person (See Instructions):
PN (Limited Partnership)

CUSIP No. 40108P101

Schedule 13G

1.

Name of Reporting Persons:
Castle Creek Capital V LLC

2.

Check the Appropriate Box if a Member of a Group

(a)

o

(b)

o

3.

SEC Use Only

4.

Citizenship or Place of Organization:
Delaware

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power:
719,022

6.

Shared Voting Power:
0

7.

Sole Dispositive Power:
719,022

8.

Shared Dispositive Power:
0

9.

Aggregate Amount Beneficially Owned by Each Reporting Person:
719,022

10.

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

11.

Percent of Class Represented by Amount in Row (9):
16.2% (1)

12.

Type of Reporting Person (See Instructions):
OO (Limited Liability Company)

CUSIP No. 40108P101

Schedule 13G

1.

Name of Reporting Persons:
John M. Eggemeyer

2.

Check the Appropriate Box if a Member of a Group

(a)

o

(b)

o

3.

SEC Use Only

4.

Citizenship or Place of Organization:
U.S.A.

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power:
0

6.

Shared Voting Power:
719,022

7.

Sole Dispositive Power:
0

8.

Shared Dispositive Power:
719,022

9.

Aggregate Amount Beneficially Owned by Each Reporting Person:
719,022

10.

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

11.

Percent of Class Represented by Amount in Row (9):
16.2% (1)

12.

Type of Reporting Person (See Instructions):
IN (Individual)

CUSIP No. 40108P101

Schedule 13G

1.

Name of Reporting Persons:
Mark G. Merlo

2.

Check the Appropriate Box if a Member of a Group

(a)

o

(b)

o

3.

SEC Use Only

4.

Citizenship or Place of Organization:
U.S.A.

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power:
0

6.

Shared Voting Power:
719,022

7.

Sole Dispositive Power:
0

8.

Shared Dispositive Power:
719,022

9.

Aggregate Amount Beneficially Owned by Each Reporting Person:
719,022

10.

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

11.

Percent of Class Represented by Amount in Row (9):
16.2% (1)

12.

Type of Reporting Person (See Instructions):
IN (Individual)

CUSIP No. 40108P101

Schedule 13G

1.

Name of Reporting Persons:
John T. Pietrzak

2.

Check the Appropriate Box if a Member of a Group

(a)

o

(b)

o

3.

SEC Use Only

4.

Citizenship or Place of Organization:
U.S.A.

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power:
0

6.

Shared Voting Power:
719,022

7.

Sole Dispositive Power:
0

8.

Shared Dispositive Power:
719,022

9.

Aggregate Amount Beneficially Owned by Each Reporting Person:
719,022

10.

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

11.

Percent of Class Represented by Amount in Row (9):
16.2% (1)

12.

Type of Reporting Person (See Instructions):
IN (Individual)

CUSIP No. 40108P101

Schedule 13G

1.

Name of Reporting Persons:
J. Mikesell Thomas

2.

Check the Appropriate Box if a Member of a Group

(a)

o

(b)

o

3.

SEC Use Only

4.

Citizenship or Place of Organization:
U.S.A.

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power:
0

6.

Shared Voting Power:
719,022

7.

Sole Dispositive Power:
0

8.

Shared Dispositive Power:
719,022

9.

Aggregate Amount Beneficially Owned by Each Reporting Person:
719,022

10.

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

11.

Percent of Class Represented by Amount in Row (9):
16.2% (1)

12.

Type of Reporting Person (See Instructions):
IN (Individual)

Item 1.

(a).

Name of Issuer
Guaranty Federal Bancshares, Inc.

(b).

Address of Issuer’s Principal Executive Offices:
1341 West Battlefield

Springfield, Missouri 65807

Item 2(a).

Name of Person Filing
See Item 2(c) below.

Item 2(b).

Address of Principal Business Office
See Item 2(c) below.

Item 2(c).

Citizenship

(i) Castle Creek Capital Partners V, LP

c/o Castle Creek Capital LLC

6051 El Tordo

Rancho Santa Fe, CA 92067

Citizenship: State of Delaware

(ii) Castle Creek Capital V LLC

c/o Castle Creek Capital LLC

6051 El Tordo

Rancho Santa Fe, CA 92067

Citizenship: State of Delaware

(iii) John M. Eggemeyer

c/o Castle Creek Capital LLC

6051 El Tordo

Rancho Santa Fe, CA 92067

Citizenship: U.S.A.

(iv) Mark G. Merlo

c/o Castle Creek Capital LLC

6051 El Tordo

Rancho Santa Fe, CA 92067

Citizenship: U.S.A.

(v) John T. Pietrzak

c/o Castle Creek Capital LLC

6051 El Tordo

Rancho Santa Fe, CA 92067

Citizenship: U.S.A.

(vi) J. Mikesell Thomas

c/o Castle Creek Capital LLC

6051 El Tordo

Rancho Santa Fe, CA 92067

Citizenship: U.S.A.

The foregoing persons are hereinafter sometimes collectively referred to as the “Reporting Persons.”

Item 2(d).

Title of Class of Securities:
Common Stock, par value $0.10 per share

Item 2(e).

CUSIP Number:
40108P101

Item 3.

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

Not Applicable.

Item 4.

Ownership.

(a)

Amount beneficially owned:   

As of the date hereof, each of the Reporting Persons may be deemed to be the beneficial owner of the 719,022 shares of Common Stock held directly by Castle Creek Capital Partners V, LP (“Fund V”).  Castle Creek Capital V LLC (“CCC V”) is the sole general partner of Fund V.  Mr. Eggemeyer, Mr. Merlo, Mr. Pietrzak, and Mr. Thomas share voting and dispositive power over the 719,022 shares beneficially owned by Fund V, due to the fact that each is a managing principal of CCC V.  CCC V, Mr. Eggemeyer, Mr. Merlo, Mr. Pietrzak, and Mr. Thomas each disclaim beneficial ownership of the Common Stock, except to the extent of their respective pecuniary interest in Fund V.

(b)

Percent of class:   

Based on information provided by the Company, there were 4,432,027 outstanding shares of Common Stock as of July 28, 2016.  Based on this number of outstanding shares of Common Stock, each of the Reporting Persons may be deemed to be the beneficial owner of approximately 16.2% of the total number of outstanding shares of Common Stock.

(c)

Number of shares as to which the reporting person has:

Castle Creek Capital Partners V, LP

(i)

Sole power to vote or to direct the vote:

719,022

(ii)

Shared power to vote or to direct the vote:

0

(iii)

Sole power to dispose or to direct the disposition of:

719,022

(iv)

Shared power to dispose or to direct the disposition of:

0

Castle Creek Capital V LLC

(i)

Sole power to vote or to direct the vote:

719,022

(ii)

Shared power to vote or to direct the vote:

0

(iii)

Sole power to dispose or to direct the disposition of:

719,022

(iv)

Shared power to dispose or to direct the disposition of:

0

John M. Eggemeyer

(i)

Sole power to vote or to direct the vote:
0

(ii)

Shared power to vote or to direct the vote:

719,022

(iii)

Sole power to dispose or to direct the disposition of:

0

(iv)

Shared power to dispose or to direct the disposition of:

719,022

Mark G. Merlo

(i)

Sole power to vote or to direct the vote:
0

(ii)

Shared power to vote or to direct the vote:

719,022

(iii)

Sole power to dispose or to direct the disposition of:

0

(iv)

Shared power to dispose or to direct the disposition of:

719,022

John T. Pietrzak

(i)

Sole power to vote or to direct the vote:
0

(ii)

Shared power to vote or to direct the vote:

719,022

(iii)

Sole power to dispose or to direct the disposition of:

0

(iv)

Shared power to dispose or to direct the disposition of:

719,022

J. Mikesell Thomas

(i)

Sole power to vote or to direct the vote:
0

(ii)

Shared power to vote or to direct the vote:

719,022

(iii)

Sole power to dispose or to direct the disposition of:

0

(iv)

Shared power to dispose or to direct the disposition of:

719,022

Item 5.

Ownership of Five Percent or Less of a Class

If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following:   o

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 on 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 Group.

Not Applicable.

Item 10.

Certification.

Each of the Reporting Persons hereby makes the following 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.

CASTLE CREEK CAPITAL PARTNERS V, LP

By:

/s/ John M. Eggemeyer

Name:

John M. Eggemeyer

Title:

Managing Principal

CASTLE CREEK CAPITAL V LLC

By:

/s/ John M. Eggemeyer

Name:

John M. Eggemeyer

Title:

Managing Principal

JOHN M. EGGEMEYER

By:

/s/ John M. Eggemeyer

Name:

John M. Eggemeyer

MARK G. MERLO

By:

/s/ Mark G. Merlo

Name:

Mark G. Merlo

JOHN T. PIETRZAK

By:

/s/ John T. Pietrzak

Name:

John T. Pietrzak

J. MIKESELL THOMAS

By:

/s/ J. Mikesell Thomas

Name:

J. Mikesell Thomas