UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported):  July 29, 2013

Guaranty Bancorp

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code  303-675-1194

Not Applicable

(Former name or former address, if changed since last report).

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2.):

o            Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o            Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o            Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o            Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 7.01                             Regulation FD Disclosure.*

Paul W. Taylor, President and Chief Executive Officer of Guaranty Bancorp (the “Company”), and Michael B. Hobbs, President of Guaranty Bank and Trust Company, will present to members of the investment community at the KBW Community Bank Investor Conference that will begin on July 30, 2013 and end on July 31, 2013.

A copy of the Company’s presentation materials is furnished as Exhibit 99.1 hereto and incorporated herein by reference.  Such presentation materials will also be available on the Company’s website at www.gbnk.com under the section entitled “Presentations”.

Item 9.01  Financial Statements and Exhibits. *

(d). Exhibits.

* The information furnished under Items 7.01 and 9.01 of this Current Report on Form 8-K shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities under that Section, nor shall it be deemed incorporated by reference in any registration statement or other filings of the registrant under the Securities Act of 1933, as amended, except as shall be set forth by specific reference in such filing.

2

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

3