Exhibit 1
JOINT FILING AGREEMENT
The undersigned hereby agree that this Amendment No. 11, dated November 9, 2015, to the Schedule 13D with respect to the common stock, par value $0.001 per share, of Guaranty Bancorp, is, and any amendments hereto signed by each of the undersigned shall be, filed on behalf of each of us pursuant to and in accordance with the provisions of Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended.
Dated: November 9, 2015
| CASTLE CREEK CAPITAL PARTNERS IV, LP |
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| By: | /s/ John M. Eggemeyer III |
| Name: | John M. Eggemeyer III |
| Title: | Managing Principal |
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| CASTLE CREEK CAPITAL IV, LLC |
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| By: | /s/ John M. Eggemeyer III |
| Name: | John M. Eggemeyer III |
| Title: | Managing Principal |
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| JOHN M. EGGEMEYER III |
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| By: | /s/ John M. Eggemeyer III |
| Name: | John M. Eggemeyer III |
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| J. MIKESELL THOMAS |
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| By: | /s/ J. Mikesell Thomas |
| Name: | J. Mikesell Thomas |
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| MARK G. MERLO |
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| By: | /s/ Mark G. Merlo |
| Name: | Mark G. Merlo |
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| JOHN T. PIETRZAK |
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| By: | /s/ John T. Pietrzak |
| Name: | John T. Pietrzak |
SIGNATURE PAGE TO JOINT FILING AGREEMENT (GUARANTY BANCORP)