Exhibit 99.1

FOR IMMEDIATE RELEASE:

Guaranty Bancorp Announces 2013 Annual and Fourth Quarter Financial Results

·                  Net income increased 31.0% in the fourth quarter 2013 as compared to the same quarter in 2012

·                  Net loan growth of $161.7 million, or 14.0% during 2013

·                  Core deposit growth of $85.0 million, or 6.7% during 2013

·                  Net interest margin improvement to 3.65% during the fourth quarter 2013

·                  Improvement in the efficiency ratio to 66.8% in 2013 as compared to 77.1% in 2012

DENVER, January 22, 2014 - Guaranty Bancorp (Nasdaq: GBNK) (“we”, “our” or “the Company”), a community bank holding company based in Colorado, today announced fourth quarter 2013 net income of $4.1 million, or $0.20 earnings per basic common share and $0.19 earnings per diluted common share. Net income for the same quarter in 2012 was $3.1 million, or $0.15 earnings per basic and diluted common share (1). The Company’s pre-tax operating earnings (2) in the fourth quarter 2013 were $5.2 million, or $0.25 earnings per basic and diluted common share, an improvement of $1.8 million or $0.08 earnings per basic and diluted common share as compared to the same quarter in 2012.

The $1.8 million increase in pre-tax operating earnings in the fourth quarter 2013 as compared to the same quarter in the prior year was primarily due to a $0.7 million improvement in interest income, attributable to favorable growth in average loan and average investment balances, combined with a $0.5 million decrease in interest expense mostly due to a decline in average other interest-bearing liabilities. Additionally, several categories of noninterest income contributed to the increase in pre-tax operating earnings in the fourth quarter 2013 as compared to the fourth quarter 2012 including a $0.3 million increase in investment management and trust fees, a $0.2 million increase in bank-owned life insurance income (“BOLI”) and a $0.2 million increase in deposit service fee income.

“For Guaranty Bancorp, 2013 was a year of growth,” said Paul W. Taylor, President and CEO. “Strong net loan growth of 14.0% in 2013 led to sustained increases in net income throughout the year, and the growth we experienced in our Wealth Management group, coupled with gains on the sale of SBA loans, resulted in continued improvement in core noninterest income. We are pleased with the stability of our net interest margin in 2013, and we saw further core deposit growth during the year of $85.0 million or 6.7%. We made significant improvement in our efficiency ratio to 66.8% for 2013 compared to 77.1% in 2012 due to top line income growth and expense control efforts. Our solid performance for the year demonstrates the value businesses and consumers place in a locally based, community bank partner.”

For the year ended December 31, 2013, pre-tax operating earnings improved $5.7 million, or 39.2% to $20.2 million as compared to $14.5 million for the same period in the prior year mostly due to a $3.2 million increase in net interest income, a $1.2 million increase in investment management and trust income, a $0.8 million increase in customer service fee income and a $0.5 million increase in gain on sale of Small Business Administration (“SBA”) loans. The improvement

(1)         Share and per share amounts presented throughout this release, including earnings per share, tangible book value per share and book value per share have been adjusted to reflect the Company’s 1-for-5 reverse stock split on May 20, 2013.

(2)         “ Pre-tax operating earnings” is considered a “non-GAAP” financial measure, which we define as income before income taxes adjusted for (if any) provision (credit) for loan losses, other real estate owned expenses, debt termination expenses, acquisition, reorganization and integration costs, and securities gains and losses. More information regarding this measure and a reconciliation to the comparable GAAP measurement is provided under the heading Non-GAAP Financial Measures in this release.

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in net interest income for the year ended December 31, 2013 as compared to the year ended December 31, 2012 was the result of a $1.1 million increase in interest income mostly due to growth in average loan and average investment balances of $127.4 million and $80.3 million, respectively, combined with a $2.1 million decline in interest expense primarily due to a decline in average other interest-bearing liabilities as well as a reduction in the average cost of deposits.

For the year ended December 31, 2013, net income was $14.0 million, or $0.67 earnings per basic and diluted common share compared to net income of $15.1 million, or $0.72 earnings per basic and diluted common share for the same period in 2012. Net income for the year ended December 31, 2012 included a $5.7 million reversal of our remaining deferred tax valuation allowance; a $2.0 million credit provision for loan losses; a $2.5 million gain on sales of securities, partially offset by a $2.8 million impairment on bank facilities. The Company began accruing income tax expense at an effective rate of 31.5% in the third quarter 2012, after the reversal of the remaining deferred tax valuation allowance in the second quarter 2012. The Company’s effective income tax rate for the year ended December 31, 2013 was 31.2%.

Key Financial Measures

Income Statement

(1) Share and per share amounts have been adjusted to reflect the Company’s 1-for-5 reverse stock split on May 20, 2013.

Balance Sheet

(1) Share and per share amounts have been adjusted to reflect the Company’s 1-for-5 reverse stock split on May 20, 2013.

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Net Interest Income and Margin

Fourth quarter 2013 net interest margin improved by two basis points to 3.65% compared to the third quarter 2013 and improved by 17 basis points from 3.48% in the fourth quarter 2012. The improvement in net interest margin in the fourth quarter 2013 as compared to the third quarter 2013 was primarily the result of a decline in the average cost of interest-bearing deposits. The improvement in net interest margin in the fourth quarter 2013 compared to the fourth quarter 2012 was mostly due to a 20 basis point increase in the yield on investments as well as a 19 basis point decrease in the average cost of interest-bearing liabilities. The decrease in the average cost of interest-bearing liabilities was primarily the result of the first quarter 2013 redemption of fixed, high-cost trust preferred securities (“TruPS”) and related subordinated debentures combined with a lower average cost of deposits.

Net interest income improved $0.3 million to $16.4 million in the fourth quarter 2013 compared to the third quarter 2013, and increased by $1.2 million compared to the fourth quarter 2012. The increase in net interest income of $0.3 million in the fourth quarter 2013 as compared to the third quarter 2013 was the result of an increase in interest income of $0.3 million primarily as a result of a $34.2 million increase in average loans. The $1.2 million increase in net interest income in the fourth quarter 2013 as compared to the same quarter in 2012 was the result of a $0.7 million increase in interest income and a $0.5 million decline in interest expense. The increase in interest income in the fourth quarter 2013 compared to the same quarter in 2012 was primarily the result of a $172.0 million, or 15.2% increase in average loans, which was partially funded by a $144.3 million decrease in the average balance of low-yielding overnight cash. The decrease in interest expense as compared to the fourth quarter 2012 was primarily the result of the prepayment of $15.0 million in fixed, high-cost TruPS and related subordinated debentures in the first quarter 2013 as well as a six basis point decrease in the average cost of deposits.

Net interest income improved by approximately $3.2 million to $63.6 million for the year ended December 31, 2013 compared to $60.4 million for the year ended December 31, 2012. Interest income increased $1.1 million during 2013 as compared to 2012 primarily due to a $110.8 million increase in average earning assets, partially offset by a 21 basis point decline in average yield. The growth in average earning assets was mostly comprised of a $127.4 million increase in average loans and an $80.3 million increase in average investments, partially offset by a $97.0 million decrease in low-yielding average overnight cash during 2013 as compared to the prior year. The decline in the average yield on earning assets was mostly due to competitive pressure on loan yields. Interest expense declined $2.1 million during 2013 as compared to the prior year primarily due to the prepayment of high-cost TruPS and related subordinated debentures combined with a four basis point decline in average deposit costs.

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Noninterest Income

The following table presents noninterest income as of the dates indicated:

Fourth quarter 2013 noninterest income was $3.5 million as compared to third quarter 2013 noninterest income of $3.7 million and fourth quarter 2012 noninterest income of $3.8 million.

Fourth quarter 2013 noninterest income was $3.5 million, reflecting a $0.2 million decline as compared to the third quarter 2013 mostly due to $0.1 million decreases in both gain on sales of securities and gain on sales of SBA loans. As compared to the fourth quarter 2012, noninterest income decreased $0.3 million during the same period in 2013 primarily due to a $0.9 million decline in gain on sales of securities, partially offset by a $0.2 million increase in customer service income, including treasury management fees, a $0.3 million increase in investment management and trust income and a $0.2 million increase in BOLI income.

For the year ended December 31, 2013, noninterest income increased $0.2 million as compared to the prior year. The increase was primarily the result of a $1.2 million, or 65.8% increase in investment management and trust income, a $0.8 million increase in customer service charge income, a $0.5 million increase in gain on sales of SBA loans, and a $0.4 million increase in BOLI income as compared to the prior year. These increases were partially offset by a $2.5 million decrease in net gains on sales of securities as compared to the year ended December 31, 2012.

During 2013, assets under management increased by $120.3 million, or 35.1%, to $463.0 million as compared to $342.7 million at December 31, 2012. The growth in assets under management was primarily related to the Company’s investment management subsidiary, Private Capital Management (“PCM”), acquired in July 2012. Since acquisition, PCM’s assets under management have grown by $107.5 million, or 65.2%, primarily due to new customer relationships as well as growth in existing relationships. In addition, PCM has contributed approximately $2.2 million in investment management income since acquisition.

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Noninterest Expense

The following table presents noninterest expense as of the dates indicated:

Noninterest expense decreased $0.3 million in the fourth quarter 2013 as compared to the third quarter 2013 and declined by $4.2 million compared to the fourth quarter of 2012.

The $0.3 million decrease in noninterest expense in the fourth quarter 2013 as compared to the third quarter 2013 was primarily the result of a $0.8 million decrease in other real estate owned (“OREO”) expenses, partially offset by a $0.4 million increase in salaries and employee benefits. The decrease in OREO expense was mostly due to an increase in net gains on disposition of properties as well as reductions in net operating costs. The increase in salaries and employee benefits expense was primarily due to increases in salary and incentive expense. The $4.2 million decrease in noninterest expense in the fourth quarter 2013 as compared to the same quarter in 2012 was primarily due to a $4.2 million decrease in OREO expenses, mostly related to an increase in net gains on disposition of properties combined with a decline in OREO write-downs, and a $0.6 million decrease in professional fees primarily due to lower legal fees. These declines in noninterest expense were partially offset by a $0.9 million increase in salary and employee benefits expense, mostly due to higher costs associated with self-funded medical insurance, incentives and salary expense as compared to the fourth quarter 2012.

For the year ended December 31, 2013, noninterest expense decreased $7.4 million as compared to the same period in 2012. The largest declines in noninterest expense as compared to the prior year were attributable to a $5.5 million decrease in OREO expenses, mostly due to an increase in net gains on disposition of properties combined with a decline in write-downs on OREO, and the $2.8 million impairment of long-lived assets recorded in 2012. Other noninterest expense decreases included a $1.2 million decrease in occupancy, furniture and equipment expenses, mostly attributable to the closure of several branches in 2012; a $0.6 million decrease in insurance and assessment expense, primarily related to lower FDIC insurance premiums mostly as a result of changes pursuant to the Dodd-Frank Act effective April 1, 2012, as well as an improvement in the Bank’s risk rating during the third quarter 2012; a $0.5 million decrease in professional fees expense, mostly related to legal costs and a $0.3 million decrease in the amortization of intangible assets as compared to the prior year. These decreases were partially offset by a $2.8 million increase in salaries and employee benefits primarily due to higher incentive and equity compensation expense as well as higher employee benefit expense related to the self-funded medical insurance plan as compared to the prior year.

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Balance Sheet

At December 31, 2013, the Company had total assets of $1.9 billion, reflecting a $14.8 million increase compared to September 30, 2013 and a $24.1 million increase compared to December 31, 2012. The increase in total assets during the fourth quarter 2013 includes a $27.2 million increase in loans and a $21.9 million increase in securities sold or called, not yet settled, partially offset by a $29.0 million decrease in investments.

As compared to December 31, 2012, total assets reflects an increase in net loans of $161.7 million, or 14.0%, an increase of $16.0 million in securities sold or called, not yet settled and a $15.8 million increase in BOLI as compared to the prior year. These increases were partially offset by a $135.1 million decrease in cash and overnight funding, a $16.6 million decrease in investments, and a $15.1 million decrease in OREO.

The following table sets forth the amounts of loans outstanding at the dates indicated:

During the three months ended December 31, 2013, loans, net of unearned fees increased by $27.2 million. The increase in loans during the fourth quarter 2013 was primarily due to a $32.8 million increase in commercial and residential real estate loans consisting mostly of loans to finance the acquisition of single and multi-tenant commercial properties located within our Colorado footprint. Loans held for sale at December 31, 2013 includes two performing SBA loans that we expect to sell during the first quarter 2014.

In 2013, loans, net of unearned fees increased by $161.7 million, or 14.0%. The 2013 net loan growth was primarily comprised of a $118.7 million increase in commercial and residential real estate loans, including a $77.1 million increase in jumbo mortgage loans and a $34.6 million increase in commercial loans. The growth in loans was primarily the result of new customer relationships, utilization of existing lines of credit and declines in loan payoffs.

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The following table sets forth the amounts of deposits outstanding at the dates indicated:

Non-maturing deposits increased $49.8 million in the fourth quarter 2013 as compared to the third quarter 2013, and increased $85.0 million, or 6.7%, as compared to the fourth quarter 2012. At December 31, 2013, noninterest bearing deposits as a percentage of total deposits was 36.9% as compared to 35.4% at September 30, 2013 and 38.8% at December 31, 2012.

During the fourth quarter 2013, securities sold under agreements to repurchase decreased by $4.9 million compared to September 30, 2013 and decreased by $42.8 million compared to December 31, 2012. The decrease from the prior year end was primarily attributable to a single depositor whose balance was re-deployed into the depositor’s operations during the second quarter 2013.

Total Federal Home Loan Bank (“FHLB”) borrowings were $130.0 million at December 31, 2013 consisting of $110.0 million of term borrowings and $20.0 million of overnight advances on our line of credit. There was a $32.7 million reduction in FHLB borrowings during the fourth quarter 2013, due to a reduction in overnight advances on our line of credit. Total borrowings at December 31, 2012 consisted of $110.2 million of FHLB term notes.

Regulatory Capital Ratios

The following table provides the capital ratios of the Company and our subsidiary bank, Guaranty Bank and Trust Company (“Bank”) as of the dates presented, along with the applicable regulatory capital requirements:

The declines in the consolidated total risk-based capital ratio and Tier 1 risk-based capital ratio between December 31, 2012 and December 31, 2013 were primarily attributable to the early redemption of $15.0 million of the Company’s TruPS and related subordinated debentures during the first quarter 2013 combined with loan growth during 2013. The redemption of the TruPS and related subordinated debentures was funded by a dividend from the Bank. All three ratios continue to remain well above the minimum capital requirements for holding companies and well capitalized requirements for banks. In addition, the Company has computed its projected regulatory capital ratios on a pro forma basis under the final rule on Enhanced Regulatory Capital Standards, commonly referred to as Basel III. The Company and the Bank currently exceed the capital requirements set forth in the new rules that become effective in the first quarter 2015.

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Asset Quality

The following table presents select asset quality data as of the dates indicated:

(1)Past due loans include both loans that are past due with respect to payments and loans that are past due because the loan has matured, and is in the process of renewal, but continues to be current with respect to payments.

(2)Loans, net of unearned loan fees, exclude loans held for sale.

(3)Texas ratio defined as total NPAs divided by subsidiary bank only Tier 1 Capital plus allowance for loan losses.

(4)Classified asset ratio defined as total classified assets to subsidiary bank only Tier 1 Capital plus allowance for loan losses.

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The following tables summarize past due loans held for investment by class as of the dates indicated:

At December 31, 2013, classified assets represented 12.7% of bank-level Tier 1 Capital plus allowance for loan losses compared to 25.2% at December 31, 2012. The continued reductions in this ratio were a result of a decline in classified assets of $29.4 million, or 50.2%, during the year ended December 31, 2013.

During the fourth quarter 2013, nonperforming assets decreased $4.3 million as compared to the third quarter 2013 and decreased by $13.5 million since December 31, 2012.  The decline in nonperforming assets during 2013 was primarily the result of the sale of OREO properties, including a single property recorded at $10.9 million sold in the first quarter 2013. Nonperforming loans at December 31, 2013 includes one out-of-state loan participation with a balance of $10.7 million.

Net recoveries in the fourth quarter 2013 were $0.4 million as compared to net recoveries of $0.1 million in the third quarter 2013 and an immaterial amount of net recoveries in the fourth quarter 2012. The coverage ratio, defined as allowance for loan losses divided by nonperforming loans, increased favorably from 113.0% at September 30, 2013 to 135.7% at December 31, 2013. The increase in the coverage ratio reflects a $2.6 million reduction in nonperforming loans during the quarter in addition to the $0.6 million increase in the allowance for loan losses during the fourth quarter 2013.

During the quarter ended December 31, 2013, the Company recorded a $0.2 million provision for loan losses compared to $0.1 million provision in the third quarter 2013 and a $3.5 million credit provision recorded in the fourth quarter in 2012. The Company resumed recognition of a provision for loan losses in the third quarter 2013 due primarily to the pace of its loan growth during 2013.

Shares Outstanding

As of December 31, 2013, the Company had 21,303,707 shares of common stock outstanding, consisting of 20,284,707 shares of voting common stock, of which 386,525 shares were in the form of unvested stock awards and 1,019,000 shares of non-voting common stock.

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Non-GAAP Financial Measures

This press release contains certain non-GAAP financial measures related to tangible assets, including tangible book value and tangible common equity, and pre-tax operating earnings adjusted for (if any) provision (credit) for loan losses, OREO expenses, debt termination expense, acquisition, reorganization and integration costs and securities gains and losses.

The Company discloses these non-GAAP financial measures to provide meaningful supplemental information regarding the Company’s operational performance and to enhance investors’ overall understanding of the Company’s core financial performance. Management believes that these non-GAAP financial measures allow for additional transparency and are used by some investors, analysts and other users of the Company’s financial information as performance measures. These non-GAAP financial measures are presented for supplemental informational purposes only and should not be considered a substitute for financial information presented in accordance with GAAP. These non-GAAP financial measures presented by the Company may be different from non-GAAP financial measures used by other companies.

The following non-GAAP schedule reconciles the non-GAAP pre-tax operating earnings to GAAP net income before income taxes as of the dates indicated:

(1) Share and per share amounts have been adjusted to reflect the Company’s 1-for-5 reverse stock split on May 20, 2013.

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The following non-GAAP schedules reconcile the book value per share to the tangible book value per share and the GAAP equity ratio to the tangible equity ratio as of the dates indicated:

Tangible Book Value per Common Share

(1) Share and per share amounts have been adjusted to reflect the Company’s 1-for-5 reverse stock split on May 20, 2013.

Tangible Common Equity Ratio

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About Guaranty Bancorp

Guaranty Bancorp is a bank holding company that operates 27 branches in Colorado through a single bank, Guaranty Bank and Trust Company. The Bank provides banking and other financial services including commercial and industrial, real estate, construction, energy, consumer and agricultural loans throughout its targeted Colorado markets to consumers and small to medium-sized businesses, including the owners and employees of those businesses. The Bank and its subsidiary also provide wealth management services, including private banking, investment management, jumbo mortgage loans and trust services. More information about Guaranty Bancorp can be found at www.gbnk.com.

Forward-Looking Statements

This press release contains forward-looking statements, which are included in accordance with the “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995. In some cases, you can identify forward-looking statements by terminology such as “may,” “will,” “should,” “could,” “expects,” “plans,” “intends,” “anticipates,” “believes,” “estimates,” “predicts,” “potential,” or “continue,” or the negative of such terms and other comparable terminology. These forward-looking statements involve known and unknown risks, uncertainties and other factors that may cause the Company’s actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following: failure to maintain adequate levels of capital and liquidity to support the Company’s operations; general economic and business conditions in those areas in which the Company operates; demographic changes; competition; fluctuations in interest rates; continued ability to attract and employ qualified personnel; ability to receive regulatory approval for the bank subsidiary to declare dividends to the Company; adequacy of the allowance for loan losses, changes in credit quality and the effect of credit quality on the provision for credit losses and allowance for loan losses; changes in governmental legislation or regulation, including, but not limited to, any increase in FDIC insurance premiums; changes in accounting policies and practices; changes in business strategy or development plans; changes in the securities markets; changes in consumer spending, borrowing and savings habits; the availability of capital from private or government sources; competition for loans and deposits and failure to attract or retain loans and deposits; changes in the financial performance and/or condition of our borrowers and the ability of our borrowers to perform under the terms of their loans and terms of other credit agreements; political instability, acts of war or terrorism and natural disasters; and additional “Risk Factors” referenced in the Company’s most recent Annual Report on Form 10-K/A filed with the Securities and Exchange Commission, as supplemented from time to time. When relying on forward-looking statements to make decisions with respect to the Company, investors and others are cautioned to consider these and other risks and uncertainties. The Company can give no assurance that any goal or plan or expectation set forth in any forward-looking statement can be achieved and readers are cautioned not to place undue reliance on such statements, which speak only as of the date made. The forward-looking statements are made as of the date of this press release, and, except as may otherwise be required by law, the Company does not intend, and assumes no obligation, to update the forward-looking statements or to update the reasons why actual results could differ from those projected in the forward-looking statements.

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GUARANTY BANCORP AND SUBSIDIARIES

Unaudited Consolidated Balance Sheets