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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

For the quarterly period ended: June 30, 2016

OR

For the transition period from                      to                     

Commission File Number: 001-36192

Civista Bancshares, Inc.

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (419) 625-4121

(Former name, former address and former fiscal year, if changed since last report)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  x    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  x    No  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer”, “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (check one):

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).    Yes  ¨    No  x

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date. Common Shares, no par value, outstanding at August 5, 2016 - 8,027,381 shares

Table of Contents

CIVISTA BANCSHARES, INC.

Index

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Part I – Financial Information

ITEM 1. Financial Statements

CIVISTA BANCSHARES, INC.

Consolidated Balance Sheets (Unaudited)

(In thousands, except share data)

See notes to interim unaudited consolidated financial statements

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CIVISTA BANCSHARES, INC.

Consolidated Statements of Operations (Unaudited)

(In thousands, except per share data)

See notes to interim unaudited consolidated financial statements

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CIVISTA BANCSHARES, INC.

Consolidated Statements of Comprehensive Income (Unaudited)

(In thousands)

See notes to interim unaudited consolidated financial statements

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CIVISTA BANCSHARES, INC.

Condensed Consolidated Statement of Changes in Shareholders’ Equity (Unaudited)

(In thousands, except share data)

See notes to interim unaudited consolidated financial statements

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CIVISTA BANCSHARES, INC.

Condensed Consolidated Statements of Cash Flows (Unaudited)

(In thousands)

See notes to interim unaudited consolidated financial statements

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CIVISTA BANCSHARES, INC.

Condensed Consolidated Statements of Cash Flows (Unaudited) (Continued)

(In thousands)

See notes to interim unaudited consolidated financial statements

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Civista Bancshares, Inc.

Notes to Interim Consolidated Financial Statements (Unaudited)

Form 10-Q

(Amounts in thousands, except share data)

(1) Consolidated Financial Statements

Nature of Operations and Principles of Consolidation: Civista Bancshares, Inc. (CBI) is an Ohio corporation and a registered financial holding company. As of May 1, 2015, CBI changed its name from First Citizens Banc Corp to Civista Bancshares, Inc. The Consolidated Financial Statements include the accounts of CBI and its wholly-owned subsidiaries: Civista Bank (Civista), First Citizens Insurance Agency, Inc., Water Street Properties, Inc. (Water St.) and FC Refund Solutions, Inc. (FCRS). FCRS was formed to facilitate payment of individual state and federal income tax refunds. First Citizens Capital LLC (FCC) is wholly-owned by Civista and holds inter-company debt. The operations of FCC are located in Wilmington, Delaware. First Citizens Investments, Inc. (FCI) is wholly-owned by Civista and holds and manages its securities portfolio. The operations of FCI are located in Wilmington, Delaware. The above companies together are referred to as the “Company.” Intercompany balances and transactions are eliminated in consolidation.

The Consolidated Financial Statements have been prepared by the Company without audit. In the opinion of management, all adjustments (which include only normal recurring adjustments) necessary to present fairly the Company’s financial position as of June 30, 2016 and its results of operations and changes in cash flows for the periods ended June 30, 2016 and 2015 have been made. The accompanying Consolidated Financial Statements have been prepared in accordance with instructions of Form 10-Q, and therefore certain information and footnote disclosures normally included in financial statements prepared in accordance with generally accepted accounting principles in the United States of America have been omitted. The results of operations for the period ended June 30, 2016 are not necessarily indicative of the operating results for the full year. Reference is made to the accounting policies of the Company described in the notes to the audited financial statements contained in the Company’s 2015 annual report. The Company has consistently followed these policies in preparing this Form 10-Q.

The Company provides financial services through its offices in the Ohio counties of Erie, Crawford, Champaign, Franklin, Logan, Madison, Summit, Huron, Ottawa, Richland, Montgomery and Cuyahoga. Its primary deposit products are checking, savings, and term certificate accounts, and its primary lending products are residential mortgage, commercial, and installment loans. Substantially all loans are secured by specific items of collateral including business assets, consumer assets and commercial and residential real estate. Commercial loans are expected to be repaid from cash flow from operations of businesses. The bank has two concentrations, one is to Lessors of Non-Residential Buildings and Dwellings totaling $239,029, or 23.3% of total loans, as of June 30, 2016 and the other is to Lessors of Residential Buildings and Dwellings totaling $129,834, or 12.7% of total loans, as of June 30, 2016. These segments of the portfolio are stable and have been conservatively underwritten, monitored and managed by experienced commercial bankers. However, the customers’ ability to repay their loans is dependent on the real estate market and general economic conditions in the area.

Other financial instruments that potentially represent concentrations of credit risk include deposit accounts in other financial institutions and Federal Funds sold that are in excess of federally insured limits. First Citizens Insurance Agency, Inc. was formed to allow the Company to participate in commission revenue generated through its third party insurance agreement. Insurance commission revenue was less than 1.0% of total revenue through June 30, 2016. Revenue from Water St. was less than 1.0% of total revenue through June 30, 2016. Management considers the Company to operate primarily in one reportable segment, banking.

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Civista Bancshares, Inc.

Notes to Interim Consolidated Financial Statements (Unaudited)

Form 10-Q

(Amounts in thousands, except share data)

(2) Significant Accounting Policies

Use of Estimates: To prepare financial statements in conformity with accounting principles generally accepted in the United States of America, management makes estimates and assumptions based on available information. These estimates and assumptions affect the amounts reported in financial statements and the disclosures provided, and future results could differ. The allowance for loan losses, impairment of goodwill, fair values of financial instruments, deferred taxes and pension obligations are particularly subject to change.

Income Taxes: Income tax expense is based on the effective tax rate expected to be applicable for the entire year. Income tax expense is the total of the current year income tax due or refundable and the change in deferred tax assets and liabilities. Deferred tax assets and liabilities are the expected future tax amounts for the temporary differences between carrying amounts and tax basis of assets and liabilities, computed using enacted tax rates. A valuation allowance, if needed, reduces deferred tax assets to the amount expected to be realized.

Business Combinations: At the date of acquisition the Company records the assets and liabilities of the acquired companies on the Consolidated Balance Sheet at their estimated fair value. The results of operations for acquired companies are included in the Company’s Consolidated Statements of Operations beginning at the acquisition date. Expenses arising from acquisition activities are recorded in the Consolidated Statements of Operations during the period incurred.

Reclassifications: Some items in the prior year financial statements were reclassified to conform to the current presentation.

Derivative Instruments and Hedging Activities: The Company enters into interest rate swap agreements to facilitate the risk management strategies of a small number of commercial banking customers. All derivatives are accounted for in accordance with ASC-815, Derivatives and Hedging. The Company mitigates the risk of entering into these agreements by entering into equal and offsetting swap agreements with highly rated third party financial institutions. The swap agreements are free-standing derivatives and are recorded at fair value in the Company’s consolidated balance sheets. The Company is party to master netting arrangements with its financial institution counterparties; however, the Company does not offset assets and liabilities under these arrangements for financial statement presentation purposes because the Company does not currently intend to execute a setoff with its’ counterparties. The master netting arrangements provide for a single net settlement of all swap agreements, as well as collateral, in the event of default on, or termination of, any one contract. Collateral, usually in the form of marketable securities, is posted by the counterparty with net liability positions in accordance with contract thresholds.

Effect of Newly Issued but Not Yet Effective Accounting Standards:

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (a new revenue recognition standard). The Update’s core principle is that a company will recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In addition, this Update specifies

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Civista Bancshares, Inc.

Notes to Interim Consolidated Financial Statements (Unaudited)

Form 10-Q

(Amounts in thousands, except share data)

the accounting for certain costs to obtain or fulfill a contract with a customer and expands disclosure requirements for revenue recognition. This Update is effective for annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period. However, In August 2015, the FASB issued ASU 2015-14, Revenue from Contracts with Customers (Topic 606) to defer the effective date of ASU 2014-09 for all entities by one year. Public business entities, certain not-for-profit entities, and certain employee benefit plans should apply the guidance in ASU 2014-09 to annual reporting periods beginning after December 15, 2017, including interim reporting periods within that reporting period. All other entities should apply the guidance in ASU 2014-09 to annual reporting periods beginning after December 15, 2018, and interim reporting periods within annual reporting periods beginning after December 15, 2019. The Company is evaluating the effect of adopting this new accounting Update.

In January 2016, the FASB issued ASU 2016-01, Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. This Update applies to all entities that hold financial assets or owe financial liabilities and is intended to provide more useful information on the recognition, measurement, presentation, and disclosure of financial instruments. Among other things, this Update (a) requires equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income; (b) simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment; (c) eliminates the requirement to disclose the fair value of financial instruments measured at amortized cost for entities that are not public business entities; (d) eliminates the requirement for public business entities to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet; (e) requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes; (f) requires an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments; (g) requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (that is, securities or loans and receivables) on the balance sheet or the accompanying notes to the financial statements; and (h) clarifies that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale securities in combination with the entity’s other deferred tax assets. For public business entities, the amendments in this Update are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. For all other entities including not-for-profit entities and employee benefit plans within the scope of Topics 960 through 965 on plan accounting, the amendments in this Update are effective for fiscal years beginning after December 15, 2018, and interim periods within fiscal years beginning after December 15, 2019. All entities that are not public business entities may adopt the amendments in this Update earlier as of the fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The Company is currently evaluating the impact the adoption of the standard will have on the Company’s financial position or results of operations.

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Civista Bancshares, Inc.

Notes to Interim Consolidated Financial Statements (Unaudited)

Form 10-Q

(Amounts in thousands, except share data)

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842). The standard requires lessees to recognize the assets and liabilities that arise from leases on the balance sheet. A lessee should recognize in the statement of financial position a liability to make lease payments (the lease liability) and a right-of-use asset representing its right to use the underlying asset for the lease term. A short-term lease is defined as one in which: (a) the lease term is 12 months or less, and (b) there is not an option to purchase the underlying asset that the lessee is reasonably certain to exercise. For short-term leases, lessees may elect to recognize lease payments over the lease term on a straight-line basis. For public business entities, the amendments in this Update are effective for fiscal years beginning after December 15, 2018, and interim periods within those years. For all other entities, the amendments in this Update are effective for fiscal years beginning after December 15, 2019, and for interim periods within fiscal years beginning after December 15, 2020. The amendments should be applied at the beginning of the earliest period presented using a modified retrospective approach with earlier application permitted as of the beginning of an interim or annual reporting period. This Update is not expected to have a significant impact on the Company’s financial statements.

In March 2016, the FASB issued ASU 2016-04, Liabilities – Extinguishments of Liabilities (Subtopic 405-20). The standard provides that liabilities related to the sale of prepaid stored-value products within the scope of this Update are financial liabilities. The amendments in the Update provide a narrow scope exception to the guidance in Subtopic 405-20 to require that breakage for those liabilities be accounted for consistent with the breakage guidance in Topic 606. The amendments in this Update are effective for public business entities, certain not-for-profit entities, and certain employee benefit plans for financial statements issued for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. For all other entities, the amendments are effective for financial statements issued for fiscal years beginning after December 15, 2018, and interim periods within fiscal years beginning after December 15, 2019. Earlier application is permitted, including adoption in an interim period. This Update is not expected to have a significant impact on the Company’s financial statements.

In March 2016, the FASB issued ASU 2016-05, Derivatives and Hedging (Topic 815). The amendments in this Update apply to all reporting entities for which there is a change in the counterparty to a derivative instrument that has been designated as a hedging instrument under Topic 815. The standards in this Update clarify that a change in the counterparty to a derivative instrument that has been designated as the hedging instrument under Topic 815 does not, in and of itself, require designation of that hedging relationship provided that all other hedge accounting criteria continue to be met. For public business entities, the amendments in this Update are effective for financial statements issued for fiscal years beginning after December 15, 2016, and interim periods within those fiscal years. For all other entities, the amendments in this Update are effective for financial statements issued for fiscal years beginning after December 15, 2017, and interim periods within fiscal years beginning after December 15, 2018. An entity has an option to apply the amendments in this Update on either a prospective basis or a modified retrospective basis. Early adoption is permitted, including adoption in an interim period. This Update is not expected to have a significant impact on the Company’s financial statements.

In March 2016, the FASB issued ASU 2016-06, Derivatives and Hedging (Topic 815). The amendments apply to all entities that are issuers of or investors in debt instruments (or hybrid financial instruments in this Update that are determined to have a debt host) with embedded call (put) options. The amendments in this Update clarify the requirements for assessing whether contingent call (put) options

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Civista Bancshares, Inc.

Notes to Interim Consolidated Financial Statements (Unaudited)

Form 10-Q

(Amounts in thousands, except share data)

that can accelerate the payment of principal on debt instruments are clearly and closely related to their debt host. An entity performing the assessment under the amendments in this Update is required to assess the embedded call (put) options solely in accordance with the four-step decision sequence. For public business entities, the amendments in this Update are effective for financial statements issued for fiscal years beginning after December 15, 2016, and interim periods within those fiscal years. For entities other than public business entities, the amendments in this Update are effective for financial statements issued for fiscal years beginning after December 15, 2017, and interim periods within fiscal years beginning after December 15, 2018. Early adoption is permitted, including adoption in an interim period. This Update is not expected to have a significant impact on the Company’s financial statements.

In March 2016, the FASB issued ASU 2016-07, Investments – Equity Method and Joint Ventures (Topic 323). The Update affects all entities that have an investment that becomes qualified for the equity method of accounting as a result of an increase in the level of ownership interest or degree of influence. The amendments in this Update eliminate the requirement that when an investment qualifies for use of the equity method as a result of an increase in the level of ownership interest or degree of influence, an investor must adjust the investment, results of operations, and retained earnings retroactively on a step-by-step basis as if the equity method had been in effect during all previous periods that the investment had been held. The amendments require that the equity method investor add the cost of acquiring the additional interest in the investee to the current basis of the investor’s previously held interest and adopt the equity method of accounting as of the date the investment becomes qualified for equity method accounting. Therefore, upon qualifying for the equity method of accounting, no retroactive adjustment of the investment is required. The amendments in this Update require that an entity that has an available-for-sale equity security that becomes qualified for the equity method of accounting recognize through earnings the unrealized holding gain or loss in accumulated other comprehensive income at the date the investment becomes qualified for use of the equity method. The amendments in this Update are effective for all entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2016. The amendments should be applied prospectively upon their effective date to increases in the level of ownership interest or degree of influence that result in the adoption of the equity method. Earlier application is permitted. This Update is not expected to have a significant impact on the Company’s financial statements.

In March 2016, the FASB issued ASU 2016-09, Compensation – Stock Compensation (Topic 718). The amendments in this Update affect all entities that issue share-based payment awards to their employees. The standards in this Update provide simplification for several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as with equity or liabilities, and classification on the statement of cash flows. Some of the areas for simplification apply only to nonpublic entities. In addition to those simplifications, the amendments eliminate the guidance in Topic 718 that was indefinitely deferred shortly after the issuance of FASB Statement No. 123 (revised 2004), Share-Based Payment. This should not result in a change in practice because the guidance that is being superseded was never effective. For public business entities, the amendments in this Update are effective for annual periods beginning after December 15, 2016, and interim periods within those annual periods. For all other entities, the amendments are effective for annual periods beginning after December 15, 2017, and interim periods within annual periods beginning after December 15, 2018. Early adoption is permitted for any entity in any interim or annual period. This Update is not expected to have a significant impact on the Company’s financial statements.

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Civista Bancshares, Inc.

Notes to Interim Consolidated Financial Statements (Unaudited)

Form 10-Q

(Amounts in thousands, except share data)

In June 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses: Measurement of Credit Losses on Financial Instruments (“ASU 2016-13”), which changes the impairment model for most financial assets. This ASU is intended to improve financial reporting by requiring timelier recording of credit losses on loans and other financial instruments held by financial institutions and other organizations. The underlying premise of the ASU is that financial assets measured at amortized cost should be presented at the net amount expected to be collected, through an allowance for credit losses that is deducted from the amortized cost basis. The allowance for credit losses should reflect management’s current estimate of credit losses that are expected to occur over the remaining life of a financial asset. The income statement will be effected for the measurement of credit losses for newly recognized financial assets, as well as the expected increases or decreases of expected credit losses that have taken place during the period. ASU 2016-13 is effective for annual and interim periods beginning after December 15, 2019, and early adoption is permitted for annual and interim periods beginning after December 15, 2018. With certain exceptions, transition to the new requirements will be through a cumulative effect adjustment to opening retained earnings as of the beginning of the first reporting period in which the guidance is adopted. The Company is currently evaluating the impact the adoption of the standard will have on the Company’s financial position or results of operations.

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Civista Bancshares, Inc.

Notes to Interim Consolidated Financial Statements (Unaudited)

Form 10-Q

(Amounts in thousands, except share data)

(3) Securities

The amortized cost and fair market value of available for sale securities and the related gross unrealized gains and losses recognized in accumulated other comprehensive income (loss) were as follows:

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Civista Bancshares, Inc.

Notes to Interim Consolidated Financial Statements (Unaudited)

Form 10-Q

(Amounts in thousands, except share data)

The amortized cost and fair value of securities at June 30, 2016, by contractual maturity, is shown below. Actual maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations. Securities not due at a single maturity date, primarily mortgage-backed securities and equity securities are shown separately.

Proceeds from sales of securities, gross realized gains and gross realized losses were as follows:

Securities were pledged to secure public deposits, other deposits and liabilities as required by law. The carrying value of pledged securities was approximately $150,444 and $142,888 as of June 30, 2016 and December 31, 2015, respectively.

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Civista Bancshares, Inc.

Notes to Interim Consolidated Financial Statements (Unaudited)

Form 10-Q

(Amounts in thousands, except share data)

Securities with unrealized losses at June 30, 2016 and December 31, 2015 not recognized in income are as follows:

At June 30, 2016, there were nine securities in the portfolio with unrealized losses mainly due to higher market rates when compared to the time of purchase. Unrealized losses on securities have not been recognized into income because the issuers’ securities are of high credit quality, management has the intent and ability to hold these securities for the foreseeable future, and the decline in fair value is largely due to market yields increasing across the municipal sector. The fair value is expected to recover as the securities approach their maturity date or reset date. The Company does not intend to sell until recovery and does not believe selling will be required before recovery.

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Civista Bancshares, Inc.

Notes to Interim Consolidated Financial Statements (Unaudited)

Form 10-Q

(Amounts in thousands, except share data)

(4) Loans

Loan balances were as follows:

Included in total loans above are deferred loan fees of $101 at June 30, 2016 and $78 at December 31, 2015.

(5) Allowance for Loan Losses

Management has an established methodology to determine the adequacy of the allowance for loan losses that assesses the risks and losses inherent in the loan portfolio. For purposes of determining the allowance for loan and lease losses, the Company has segmented certain loans in the portfolio by product type. Loss migration rates for each risk category are calculated and used as the basis for calculating loan loss allowance allocations. Loss migration rates are calculated over a three-year period for all portfolio segments, except for the segment consisting of purchased automobile loans which is calculated over a two and one-half year period. The use of a three-year period for loss migration analysis is a change in methodology as of the third quarter of 2015. Previously, a two-year loss migration analysis had been used for the entire portfolio. With continued improvement and stability in economic conditions, regulatory guidance recommends a longer look-back period. In addition, Civista made significant changes to consumer and commercial lending policies in the first quarter of 2012. Combined, the stable economy and now seasoned policy changes indicate a three-year period is more reflective of future expectations. Management also considers certain economic factors for trends that management uses to account for the qualitative and environmental changes in risk, which affects the level of the reserve. The following qualitative factors are analyzed:

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Civista Bancshares, Inc.

Notes to Interim Consolidated Financial Statements (Unaudited)

Form 10-Q

(Amounts in thousands, except share data)

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Civista Bancshares, Inc.

Notes to Interim Consolidated Financial Statements (Unaudited)

Form 10-Q

(Amounts in thousands, except share data)

The total allowance reflects management’s estimate of loan losses inherent in the loan portfolio at the balance sheet date. The Company considers the allowance for loan losses of $14,547 adequate to cover loan losses inherent in the loan portfolio, at June 30, 2016. The following tables present, by portfolio segment, the changes in the allowance for loan losses for the three and six months ended June 30, 2016 and 2015.

Allowance for loan losses:

For the six months ended June 30, 2016

For the six months ended June 30, 2016, the increase in allowance for Commercial & Agriculture loans was due to an increase in general reserves as a result of higher balances and higher loss rates in criticized loans. The result was represented as an increase in the provision. The allowance for Commercial Real Estate – Owner Occupied loans was reduced not only by a decrease in specific reserves required for this type, but also by decreases in past due, classified and non-accrual loans for this type. The result of these changes was represented as a decrease in the provision. The increase in allowance for Commercial Real Estate – Non-Owner Occupied loans was the result of an increase in general reserves required as a result of higher balances. Offsetting this was a payoff on a previously charged down loan was received resulting in a recovery of approximately $1,303. The net result was represented as a decrease in the provision. The allowance for Residential Real Estate loans was reduced by a decrease in general reserves required for this type as a result of a decrease in loss rates, represented by a decrease in the provision. The allowance for Farm Real Estate loans was reduced by a decrease in general reserves required for this type as a result of lower outstanding loan balances and a decrease in loss rates. The result of these changes was represented as a decrease in the provision. Management feels that the unallocated amount is appropriate and within the relevant range for the allowance that is reflective of the risk in the portfolio.

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Civista Bancshares, Inc.

Notes to Interim Consolidated Financial Statements (Unaudited)

Form 10-Q

(Amounts in thousands, except share data)

Allowance for loan losses:

For the six months ended June 30, 2015

For the six months ended June 30, 2015, the allowance for Commercial and Agriculture loans was reduced due to decreases in specific reserves for impaired loans. The decrease in specific reserves for impaired loans was the result of the anticipated resolution of an impaired loan. The Company does not expect to incur losses with this resolution. This decrease was offset by an increase in criticized loan balances. The result was represented as a decrease in the provision. The increase in the allowance for Commercial Real Estate - Owner Occupied loans was the result of an increase in loss migration rates for special mention loans, based on the migration of loans into the special mention category during the migration analysis period, and an increase in substandard rated loan balances. The allowance for Commercial Real Estate – Non – Owner Occupied loans was reduced due to a decrease in loss migration rates offset by an increase in criticized loan balances. The ending reserve balance for Residential Real Estate loans declined from the end of the previous year due to charge-offs of loans that had a specific reserve previously applied. While loan balances were up, loss rates continued to decrease resulting in the allowance being lower. While criticized loan balances increased, we saw improvement in loss migration rates and a decline in specific reserves for impaired loans during the period. As a result, management determined that it was appropriate to reduce unallocated reserves at June 30, 2015.

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Civista Bancshares, Inc.

Notes to Interim Consolidated Financial Statements (Unaudited)

Form 10-Q

(Amounts in thousands, except share data)

Allowance for loan losses:

For the three months ended June 30, 2016

For the three months ended June 30, 2016, the increase in allowance for Commercial & Agriculture loans was due to an increase in general reserves as a result of higher loss rates in criticized loans. The result was represented as an increase in the provision. The allowance for Commercial Real Estate – Non-Owner Occupied loans increased as the result of an increase in general reserves required as a result of higher balances. Offsetting this was a payoff on a previously charged down loan that was received resulting in a recovery of approximately $1,303. The net result was represented as a decrease in the provision. The allowance for Residential Real Estate loans was reduced by a decrease in general reserves required for this type as a result of a decrease in loss rates, represented by a decrease in the provision. The allowance for Real Estate Construction loans was reduced by a decrease in general reserves required for this type as result of decreased loan balances, represented by a decrease in the provision. The allowance for Farm Real Estate loans was reduced by a decrease in general reserves required for this type as a result of lower outstanding loan balances, represented as a decrease in the provision. Management feels that the unallocated amount is appropriate and within the relevant range for the allowance that is reflective of the risk in the portfolio.

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Civista Bancshares, Inc.

Notes to Interim Consolidated Financial Statements (Unaudited)

Form 10-Q

(Amounts in thousands, except share data)

Allowance for loan losses:

For the three months ended June 30, 2015

For the three months ended June 30, 2015, the allowance for Commercial and Agriculture loans was reduced due to decreases in specific reserves for impaired loans. The decrease in specific reserves for impaired loans was the result of the anticipated resolution of an impaired loan. The Company does not expect to incur losses with this resolution. This decrease was offset by an increase in criticized loan balances. The result was represented as a decrease in the provision. The increase in the allowance for Commercial Real Estate - Owner Occupied loans was the result of an increase in loss migration rates for special mention loans, based on the migration of loans into the special mention category during the migration analysis period, and an increase in substandard rated loan balances. The allowance for Commercial Real Estate – Non – Owner Occupied loans was reduced due to a decrease in loss migration rates and offset by an increase in criticized loan balances. The ending reserve balance for Residential Real Estate loans declined due to charge-offs of loans that had a specific reserve previously applied and a decline in the loss rates applied. The ending reserve balance for Real Estate Construction loans declined from the end of the previous quarter due to a decline in balances. While loan balances were up during the quarter, loss migration rates continued to decrease resulting in the allowance being lower. While criticized loan balances increased, we saw improvement in loss migration rates and a decline in specific reserves for impaired loans. As a result, management determined that it was appropriate to reduce unallocated reserves at June 30, 2015.

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Civista Bancshares, Inc.

Notes to Interim Consolidated Financial Statements (Unaudited)

Form 10-Q

(Amounts in thousands, except share data)

The following tables present, by portfolio segment, the allocation of the allowance for loan losses and related loan balances as of June 30, 2016 and December 31, 2015.

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Civista Bancshares, Inc.

Notes to Interim Consolidated Financial Statements (Unaudited)

Form 10-Q

(Amounts in thousands, except share data)