Filed pursuant to Rule 424(b)(3)
Registration No. 333-229488

Proxy Statement/Prospectus

MERGER PROPOSED—YOUR VOTE IS VERY IMPORTANT

To the Shareholders of LBC Bancshares, Inc.:

The boards of directors of Colony Bankcorp, Inc., or Colony, and LBC Bancshares, Inc., or LBC, have each unanimously approved the acquisition of LBC by Colony. The acquisition will be accomplished pursuant to the terms of an Agreement and Plan of Merger, dated as of December 17, 2018, which we refer to as the merger agreement, by and between Colony and LBC, whereby LBC will be merged with and into Colony, which we refer to as the merger. Immediately following the merger of LBC with and into Colony, Calumet Bank, a wholly owned bank subsidiary of LBC, will merge with and into Colony’s wholly owned bank subsidiary, Colony Bank, with Colony Bank as the surviving bank, which we refer to as the bank merger.

If the merger is completed, each outstanding share of LBC common stock issued and outstanding immediately prior to the effective time of the merger will be converted into the right to receive, at the election of each LBC shareholder, either (i) $23.50 in cash, or (ii) 1.3239 shares of Colony common stock. The election of stock consideration or cash consideration will be subject to proration such that 55% of the issued and outstanding shares of LBC common stock will be exchanged for Colony common stock and 45% will be exchanged for cash, and at least 50% of the merger consideration will be paid in Colony common stock. As a result, if the aggregate number of shares with respect to which a valid stock or cash election has been made exceeds these limits, shareholders who have elected the form of merger consideration that has been over-subscribed will receive a mixture of both stock consideration and cash consideration in accordance with the proration procedures set forth in the merger agreement so that such limits are not exceeded. Each option or warrant to purchase shares of LBC common stock shall be cancelled as of the effective time of the merger and converted into the right to receive a cash payment equal to the product of (i) the total number of shares of LBC common stock subject to such option or warrant, as applicable, times (ii) the excess, if any, of $23.50 over the exercise price per share of LBC common stock subject to such option or warrant, as applicable.

Although the number of shares of Colony common stock that LBC shareholders may choose to receive is fixed, the market value of the merger consideration will fluctuate with the market price of Colony common stock and will not be known at the time LBC shareholders vote on the merger. Colony common stock is currently quoted on the NASDAQ Global Market under the symbol “CBAN.” On December 17, 2018, the last full trading day before the public announcement of the merger agreement, based on the last reported sale price of Colony common stock of $16.10 per share, the 1.3239 exchange ratio represented approximately $21.31 in value for each share of LBC common stock to be converted into Colony common stock. Based on the most recent reported closing sale price of Colony common stock on February 8, 2019 of $15.95 per share, the exchange ratio represented approximately $21.12 in value for each share of LBC common stock to be converted into Colony common stock. Based on the exchange ratio and the number of shares of LBC common stock outstanding (assuming the exercise of all outstanding options and warrants), the maximum number of shares of Colony common stock offered by Colony and issuable in the merger is 1,152,073. We urge you to obtain current market quotations for the price of Colony common stock (trading symbol “CBAN”). There are no current market quotations for LBC common stock because LBC is a privately owned corporation and its common stock is not traded on any established public trading market.

LBC will hold a special meeting of its shareholders, referred to as the LBC special meeting, where LBC shareholders will be asked to consider and vote upon (1) a proposal to approve the merger agreement and the merger, and (2) a proposal to adjourn the LBC special meeting, if necessary or appropriate, to solicit additional proxies in favor of the proposal to approve the merger agreement and the merger.

The LBC special meeting will be held at LBC’s headquarters located at 101 Calumet Center Road LaGrange, Georgia 30241, on March 21, 2019, at 3:30 p.m., Eastern Time, subject to any adjournment or postponement thereof.

Each of Colony and LBC expects that the merger will qualify as a “reorganization” within the meaning of Section 368(a) of the Internal Revenue Code of 1986, as amended, which we refer to as the Code, with the result that the portion of LBC common stock exchanged for Colony common stock will generally be tax-free and the portion of the LBC common stock exchanged for cash will generally be taxable as capital gain.

Your vote is important. Completion of the merger is subject to the approval of the merger agreement by the shareholders of LBC. Regardless of whether or not you plan to attend the LBC special meeting, please take the time to authorize a proxy to vote your shares in accordance with the instructions contained in this proxy statement/prospectus. Submitting a proxy now will not prevent you from being able to vote in person at the LBC special meeting.

The board of directors of LBC has determined that the merger agreement and the transactions contemplated thereby, including the merger, are advisable and in the best interests of the shareholders of LBC, has unanimously approved the merger agreement and the merger and unanimously recommends that the shareholders of LBC vote “FOR” the proposal to approve the merger agreement and the merger and “FOR” the proposal to adjourn the LBC special meeting, if necessary or appropriate, to solicit additional proxies in favor of the proposal to approve the merger agreement and the merger.

This proxy statement/prospectus describes the LBC special meeting, the merger, the merger agreement, other documents related to the merger and other related matters. Please carefully read this entire proxy statement/prospectus, including “Risk Factors,” beginning on page 24, for a discussion of the risks relating to the proposed merger. You also can obtain information about Colony from documents that it has filed with the Securities and Exchange Commission.

If you have any questions concerning the merger, please contact Leonard H. Bateman, Jr., President and Chief Executive Officer, at (706) 884-6000. We look forward to seeing you at the meeting.

Neither the Securities and Exchange Commission, the Board of Governors of the Federal Reserve System, the Office of the Comptroller of the Currency, the Federal Deposit Insurance Corporation, nor any state securities commission or any other bank regulatory agency has approved or disapproved the securities to be issued in the merger or determined if this proxy statement/prospectus is accurate or adequate. Any representation to the contrary is a criminal offense.

The securities to be issued in the merger are not savings or deposit accounts or other obligations of any bank or non-bank subsidiary of either Colony or LBC, and they are not insured by the Federal Deposit Insurance Corporation or any other governmental agency.

The date of this proxy statement/prospectus is February 13, 2019, and it is first being mailed or otherwise delivered to the LBC shareholders on or about February 20, 2019.

LBC BANCSHARES, INC.

101 Calumet Center Road

LaGrange, Georgia 30241

(706) 884-6000

NOTICE OF SPECIAL MEETING OF SHAREHOLDERS

To Be Held on March 21, 2019

To the Shareholders of LBC Bancshares, Inc.:

A special meeting of the shareholders of LBC Bancshares, Inc., or LBC, will be held at LBC’s headquarters located at 101 Calumet Center Road, LaGrange, Georgia 30241, on March 21, 2019, at 3:30 p.m., Eastern Time, subject to any adjournment or postponement thereof, for the following purposes:

No other business may be conducted at the LBC special meeting. All holders of shares of common stock of LBC of record as of the close of business as of 5:00 p.m. Eastern Time on February 7, 2019 will be entitled to notice of and to vote at the LBC special meeting and any adjournments thereof. The LBC special meeting may be adjourned from time to time upon approval of holders of LBC common stock without any notice other than by announcement at the meeting of the adjournment thereof, and any and all business for which notice is hereby given may be transacted at such adjourned meeting.    

Holders of record of LBC common stock have the right to dissent from the merger agreement and the merger and obtain payment in cash of the appraised fair value of their shares of LBC common stock under applicable provisions of the Georgia Business Corporation Code, or GBCC. In order for a holder of LBC common stock to perfect his, her or its right to dissent, such holder must carefully follow the procedure set forth in the GBCC. A copy of the applicable statutory provisions of the GBCC is included as Annex C to the accompanying proxy statement/prospectus and a summary of these provisions can be found under the caption “The Merger— Dissenters’ Rights,” beginning on page 59 of the proxy statement/prospectus. The merger may not be completed if the holders of more than 10% of the outstanding shares of LBC common stock exercise dissenters’ rights.

If you have any questions concerning the merger agreement, the merger, the LBC special meeting or the proxy statement/prospectus, would like additional copies of the proxy statement/prospectus, need a proxy card or need help voting your shares of LBC common stock, please contact Leonard H. Bateman, Jr., President and Chief Executive Officer, at (706) 884-6000.

By Order of the Board of Directors,

/s/ Jared T. Jones            

Jared T. Jones

Chairman of the Board

LaGrange, Georgia

February 13, 2019

The LBC board of directors unanimously recommends that holders of record of LBC common stock entitled to vote at the LBC special meeting vote “FOR” the proposal to approve the merger agreement and the merger and “FOR” the adjournment of the LBC special meeting if such adjournment is necessary to permit solicitation of additional proxies if there are not sufficient votes at the time of the LBC special meeting to constitute a quorum or to approve the merger agreement and the merger.

Your Vote is Very Important

A proxy card is enclosed. Whether or not you plan to attend the LBC special meeting, if you are a holder of shares of LBC common stock, please vote by completing, signing and dating the proxy card and promptly mailing it in the enclosed envelope. You may also vote via the Internet or telephone by following the instructions on the proxy card. You may revoke your proxy in the manner described in the proxy statement/prospectus at any time before it is exercised. If you are a holder of shares of LBC common stock and attend the LBC special meeting, you may vote in person if you desire, even if you have previously returned your proxy card.

ADDITIONAL INFORMATION

This proxy statement/prospectus incorporates important business and financial information about Colony from documents filed with the Securities and Exchange Commission, or SEC, that are not included in or delivered with this proxy statement/prospectus. You can obtain any of the documents filed with or furnished to the SEC by Colony at no cost from the SEC’s website at http://www.sec.gov. You may also request copies of these documents, including documents incorporated by reference in this proxy statement/prospectus, at no cost by contacting Colony at the contact information set forth below:

You will not be charged for any of these documents that you request. To obtain timely delivery of these documents, you must request them no later than five business days before the date of the special meeting, or March 14, 2019.

If you are a LBC shareholder and have any questions about the merger agreement, the merger, the LBC special meeting or the proxy statement/prospectus, would like additional copies of the proxy statement/prospectus, need a proxy card or need help voting your shares of LBC common stock, please contact Leonard H. Bateman, Jr., President and Chief Executive Officer, at (706) 884-6000.

You should rely only on the information contained in or incorporated by reference into this document. No one has been authorized to provide you with information that is different from that contained in, or incorporated by reference into, this document. This document is dated February 13, 2019, and you should assume that the information in this document is accurate only as of such date. You should assume that the information incorporated by reference into this proxy statement/prospectus from another document is accurate as of the date of such other document. Neither the mailing of this document to LBC shareholders nor the issuance by Colony of shares of Colony common stock in connection with the merger will create any implication to the contrary.

This document does not constitute an offer to sell, or a solicitation of an offer to buy any securities, or the solicitation of a proxy, in any jurisdiction to or from any person to whom it is unlawful to make any such offer or solicitation in such jurisdiction. Except where the context otherwise indicates, information contained in this document regarding LBC has been provided by LBC and information contained in this document regarding Colony has been provided by Colony. See “Where You Can Find More Information” for more details.

TABLE OF CONTENTS

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QUESTIONS AND ANSWERS

The following are answers to some questions that LBC shareholders may have regarding the proposed transaction between Colony and LBC and the proposals being considered at the LBC special meeting. Colony and LBC urge you to read carefully this entire proxy statement/prospectus, including the annexes, and the documents incorporated by reference into this proxy statement/prospectus, because the information in this section does not provide all the information that might be important to you.

Unless the context otherwise requires, references in this proxy statement/prospectus to: (1) “Colony” refer to Colony Bankcorp, Inc., a Georgia corporation, and its affiliates; (2) “Colony Bank” refer to Colony Bank, a Georgia state-chartered bank and the wholly owned bank subsidiary of Colony; (3) “LBC” refer to LBC Bancshares, Inc., a Georgia corporation, and its affiliates; and (4) “Calumet Bank” refer to Calumet Bank, a Georgia state-chartered bank and the wholly owned bank subsidiary of LBC.

The merger cannot be completed unless, among other things, the majority of the outstanding shares of LBC common stock entitled to vote at the LBC special meeting vote in favor of the proposal to approve the merger agreement and the merger, which we refer to as the merger proposal.

In addition, LBC is soliciting proxies from its shareholders with respect to a proposal to approve one or more adjournments of the LBC special meeting, if necessary or appropriate, to solicit additional proxies if there are insufficient votes at the time of such adjournment to approve the merger proposal, which we refer to as the adjournment proposal. The completion of the merger is not conditioned upon shareholder approval of the adjournment proposal.

This proxy statement/prospectus contains important information about the merger agreement, the merger and the proposals being voted on at the LBC special meeting, and you should read it carefully. This is a proxy statement/prospectus because (1) LBC is soliciting proxies from the LBC shareholders and the proxy statement provides important information about the LBC special meeting to vote on the merger proposal and the adjournment proposal, and (2) Colony will issue shares of Colony common stock to holders of LBC common stock in connection with the merger, and the prospectus provides important information about such shares. The enclosed materials allow LBC shareholders to authorize a proxy to vote their shares without attending the LBC special meeting.

Your vote is important. We encourage you to authorize your proxy as soon as possible.

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LBC may terminate the merger if (i) the average closing price of Colony common stock over the 20 trading days preceding the date that is five days prior to the closing date is less than $14.20, and (ii) the decline in the price of Colony’s common stock (as measured by the average closing price divided by $17.75) is more than 20% greater than the decline of the KBW Regional Banking Index (KRX) (as measured by dividing the average closing price of the KBW Regional Banking Index over the 20 trading days preceding the date that is five days prior to the closing date by $91.81); provided, however, Colony has the option, but not the obligation, to adjust the exchange ratio to prevent the termination of merger agreement.

Colony will not issue any fractional shares of Colony common stock in the merger. LBC shareholders who would otherwise be entitled to a fractional share of Colony common stock upon the completion of the merger will instead receive an amount in cash (without interest and rounded to the nearest whole cent) determined by multiplying the (i) fractional share interest in Colony common stock, rounded to the nearest one hundredth of a share, to which such holder would otherwise be entitled by (ii) $23.50.

If you hold shares in “street name” through a bank, broker, nominee or other holder of record you must follow the instructions provided by the bank, broker, nominee or other holder of record to make an election.

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The adjournment proposal requires the affirmative vote of a majority of the votes cast on the matter.

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If you are a beneficial owner, please refer to the instructions provided by your bank, brokerage firm or other nominee to see which of the above choices are available to you. Your bank, brokerage firm or other nominee cannot vote your shares without instructions from you. Please note that if you are a beneficial owner and wish to vote in person at the special meeting, you must obtain a legal proxy from your bank, brokerage firm or other nominee.

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For further information, see “The Merger—Material U.S. Federal Income Tax Consequences.”

The U.S. federal income tax consequences described above may not apply to all holders of LBC common stock. Your particular tax consequences will depend on your individual situation. Accordingly, we strongly urge you to consult your independent tax advisor for a full understanding of the particular tax consequences of the merger to you.

Pursuant to the merger agreement, the merger may not be completed if dissenters’ rights of appraisal are properly asserted with respect to 10% or more of the outstanding shares of LBC common stock.

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CAUTIONARY STATEMENT CONCERNING FORWARD-LOOKING STATEMENTS

Some of the statements contained or incorporated by reference in this proxy statement/prospectus contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including, but not limited to, statements about the financial condition, results of operations, earnings outlook and business plans, goals, expectations and prospects of Colony, LBC and the combined company following the proposed merger and statements for the period after the merger. Words such as “anticipate,” “believe,” “feel,” “expect,” “estimate,” “indicate,” “seek,” “strive,” “plan,” “intend,” “outlook,” “forecast,” “project,” “position,” “target,” “mission,” “contemplate,” “assume,” “achievable,” “potential,” “strategy,” “goal,” “aspiration,” “outcome,” “continue,” “remain,” “maintain,” “trend,” “objective” and variations of such words and similar expressions, or future or conditional verbs such as “will,” “would,” “should,” “could,” “might,” “can,” “may” or similar expressions, as they relate to Colony, LBC, the proposed merger or the combined company following the merger often identify forward-looking statements, although not all forward-looking statements contain such words.

These forward-looking statements are predicated on the beliefs and assumptions of management based on information known to management as of the date of this proxy statement/prospectus and do not purport to speak as of any other date. Forward-looking statements may include descriptions of the expected benefits and costs of the transaction; forecasts of revenue, earnings or other measures of economic performance, including statements of profitability, business segments and subsidiaries; management plans relating to the merger; the expected timing of the completion of the merger; the ability to complete the merger; the ability to obtain any required regulatory, shareholder or other approvals; any statements of the plans and objectives of management for future or past operations, including the execution of integration plans; any statements of expectation or belief and any statements of assumptions underlying any of the foregoing.

The forward-looking statements contained or incorporated by reference in this proxy statement/prospectus reflect the view of management as of this date with respect to future events and are subject to risks and uncertainties. Should one or more of these risks materialize or should underlying beliefs or assumptions prove incorrect, actual results could differ materially from those anticipated by the forward-looking statements or historical results. Such risks and uncertainties include, among others, the following possibilities:

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Any forward-looking statements made in this proxy statement/prospectus or in any documents incorporated by reference into this proxy statement/prospectus, are subject to the protection of the safe harbor for forward-looking statements contained in the Private Securities Litigation Reform Act of 1995. You are cautioned not to place undue reliance on these statements, which speak only as of the date of this proxy statement/prospectus or the date of any document incorporated by reference in this proxy statement/prospectus. Colony and LBC do not undertake to update forward-looking statements to reflect facts, circumstances, assumptions or events that occur after the date the forward-looking statements are made, unless and only to the extent otherwise required by law. All subsequent written and oral forward-looking statements concerning the merger or other matters addressed in this proxy statement/prospectus and attributable to Colony, LBC or any person acting on their behalf are expressly qualified in their entirety by the cautionary statements contained or referred to in this proxy statement/prospectus.

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SELECTED CONSOLIDATED HISTORICAL FINANCIAL INFORMATION OF COLONY

The following selected consolidated financial information for the fiscal years ended December 31, 2013 through December 31, 2017 is derived from audited consolidated financial statements of Colony. The consolidated financial information as of and for the nine months ended September 30, 2018 and 2017 is derived from unaudited consolidated financial statements and, in the opinion of Colony’s management, reflects all adjustments, consisting only of normal recurring adjustments, necessary for a fair presentation of these data for those dates. The selected consolidated income data for the nine months ended September 30, 2018 is not necessarily indicative of the results that may be expected for the entire year ending December 31, 2018. You should not assume the results of operations for any past periods indicate results for any future period. You should read this information in conjunction with Colony’s consolidated financial statements and related notes thereto included in Colony’s Annual Report on Form 10-K for the year ended December 31, 2017, and in Colony’s Quarterly Report on Form 10-Q for the nine months ended September 30, 2018, each of which are incorporated by reference into this proxy statement/prospectus. See “Where You Can Find More Information.”

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COMPARATIVE MARKET PRICES AND DIVIDENDS

Colony Bankcorp, Inc.

Colony common stock is listed on the NASDAQ Global Market under the symbol “CBAN.” As of February 8, 2019, the latest practicable date prior to this proxy statement/prospectus, there were 8,444,908 shares of Colony common stock outstanding, which were held by approximately 1,826 holders of record. The following table sets forth the high and low reported intra-day sales prices per share of Colony common stock and the cash dividends declared per share for the periods indicated.

On December 17, 2018, the last full trading day before the public announcement of the merger agreement, the closing sale price per share of Colony common stock was $16.10, and on February 8, 2019, the latest practicable date before the date of this proxy statement/prospectus, the closing sale price per share of Colony common stock was $15.95.

LBC shareholders are advised to obtain current market quotations for Colony common stock. The market price of Colony common stock will fluctuate between the date of this proxy statement/prospectus and the date of completion of the merger. No assurance can be given concerning the market price of Colony common stock before or after the effective date of the merger. Changes in the market price of Colony common stock prior to the completion of the merger may affect the market value of the merger consideration that LBC shareholders will receive.

The principal sources of funds to Colony to pay dividends are the dividends received from Colony Bank. Consequently, dividends are dependent upon Colony Bank’s earnings, capital needs, regulatory policies, as well as statutory and regulatory limitations. Federal and state banking laws and regulations restrict the amount of dividends and loans a bank may make to its parent company. For example, Georgia law requires prior approval for a bank to pay dividends where the aggregate amount of dividends to be declared or anticipated to be declared during the current calendar year exceeds 50 percent of its net after-tax profits before dividends for the previous calendar year. A depository institution may not pay any dividend if payment would cause it to become undercapitalized or if it already is undercapitalized. See “Description of Capital Stock—Common Stock—Dividends.”

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LBC Bancshares, Inc.

As of the record date for the LBC special meeting, there were 1,447,554 shares of LBC common stock outstanding, which were held by approximately 222 holders of record. LBC common stock is not listed on any established securities exchange or quotation system. Accordingly, there is no established public trading market for the shares of LBC common stock and as a result, any market in LBC common stock prior to the merger should be characterized as illiquid and irregular. Privately negotiated trades of LBC common stock occur from time to time without pricing information being made known to LBC management. These transactions represent privately negotiated transactions directly between the purchaser and seller and are not subject to any reporting system. Since January 1, 2016, there were no sales of LBC common stock to management’s knowledge or for which pricing information for any such sale was provided to LBC management.

LBC has not paid any dividends since January 1, 2016. LBC’s shareholders are entitled to receive dividends out of legally available funds when, as and if declared by LBC’s board of directors, in its sole discretion. As a Georgia corporation, LBC is subject to certain restrictions on dividends under the GBCC. Generally, a Georgia corporation may pay dividends to its shareholders out of its surplus (the excess of its assets over its liabilities and stated capital) unless the corporation is insolvent or the payment of the dividend would render the corporation insolvent, or the corporation is not able to pay its debts as they become due in the usual course of business.

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RISK FACTORS

In addition to general investment risks and the other information contained in or incorporated by reference into this proxy statement/prospectus, including the matters addressed under the section “Cautionary Statement Concerning Forward-Looking Statements,” you should carefully consider the following risk factors in deciding how to vote for the proposals presented in this proxy statement/prospectus. You should also consider the other information in this proxy statement/prospectus and the other documents incorporated by reference into this proxy statement/prospectus. See “Where You Can Find More Information.”

Risks Related to the Merger

Because of the fixed exchange ratio and the fluctuation of the market price of Colony common stock, LBC shareholders will not know at the time of the special meeting the market value of the merger consideration they will receive at the effective time of the merger.

Pursuant to the merger agreement, each outstanding share of LBC common stock issued and outstanding immediately prior to the effective time of the merger will be converted into the right to receive, at the election of each LBC shareholder, either (i) $23.50 in cash, which we refer to as the cash consideration, or (ii) 1.3239 shares of Colony’s common stock, which we refer to as to the stock consideration, provided that the total mix of merger consideration shall be fixed at 55% stock and 45% cash, and if the stock consideration or the cash consideration is over-subscribed, the exchange agent will make adjustments to the elections of LBC shareholders whose elections were in excess of these limits in order to preserve that mix of merger consideration.

The market value of the stock consideration may vary from the market value on the date LBC and Colony announced the merger, on the date that this proxy statement/prospectus is mailed, on the date of the LBC special meeting and on the date the merger is completed and thereafter due to fluctuations in the market price of Colony common stock. Any fluctuation in the market price of Colony common stock after the date of this proxy statement/prospectus will change the value of the shares of Colony common stock that LBC shareholders may receive. Stock price changes may result from a variety of factors that are beyond the control of Colony and LBC, including but not limited to general market and economic conditions, changes in their respective businesses, operations and prospects and regulatory considerations. Therefore, at the time of the LBC special meeting, LBC shareholders will not know the precise market value of the stock consideration they may receive at the effective time of the merger. LBC shareholders should obtain current sale prices for shares of Colony common stock before voting their shares at the LBC special meeting.

The merger and related transactions are subject to approval by LBC shareholders.

The merger cannot be completed unless the LBC shareholders approve the merger agreement and the merger by the affirmative vote of the holders of at least a majority of the outstanding shares of LBC’s common stock entitled to vote at the LBC special meeting.

Failure to complete the merger could negatively affect the value of the shares and the future business and financial results of LBC.

If the merger is not completed, the ongoing business of LBC could be adversely affected and LBC will be subject to a variety of risks associated with the failure to complete the merger, including the following:

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If the merger is not completed, these risks could materially affect the business, financial results and the value of LBC common stock.

LBC will be subject to business uncertainties and contractual restrictions while the merger is pending.

Uncertainty about the effect of the merger on employees and customers may have an adverse effect on LBC. These uncertainties may impair LBC’s ability to attract, retain and motivate key personnel until the merger is completed, and could cause customers and others that deal with LBC to seek to change existing business relationships with LBC. Retention of certain employees by LBC may be challenging while the merger is pending, as certain employees may experience uncertainty about their future roles with LBC or Colony. If key employees depart because of issues relating to the uncertainty and difficulty of integration or a desire not to remain with LBC or Colony, LBC’s business or the business assumed by Colony following the merger could be harmed. In addition, LBC has agreed to certain contractual restrictions on the operation of its business prior to closing. See “The Merger Agreement—Covenants and Agreements” for a description of the restrictive covenants applicable to LBC.

The merger agreement limits LBC’s ability to pursue an alternative acquisition proposal and requires LBC to pay a termination fee of $1,432,000 under limited circumstances relating to alternative acquisition proposals.

Under the merger agreement, LBC has agreed not to initiate, solicit, induce or knowingly encourage, or take any action to facilitate any alternative business combination transaction or, subject to certain exceptions, participate in discussions or negotiations regarding, or furnish any non-public information relating to, any alternative business combination transaction. See “The Merger Agreement—No Solicitation” on page 75. The merger agreement also provides for LBC to pay to Colony a termination fee in the amount of $1,432,000 in the event that the merger agreement is terminated for certain reasons. See “The Merger Agreement—Termination Fee” on page 79. These provisions could discourage a potential competing acquirer that might have an interest in acquiring LBC from considering or making a competing acquisition proposal, even if the potential competing acquirer was prepared to pay consideration with a higher per share cash value than the market value proposed to be received or realized in the merger, or might result in a potential competing acquirer proposing to pay a lower price than it might otherwise have proposed to pay because of the added expense of the termination fee that may become payable in certain circumstances under the merger agreement.

The merger agreement contains provisions granting both LBC and Colony the right to terminate the merger agreement in certain circumstances.

The merger agreement contains certain termination rights, including the right, subject to certain exceptions, of either party to terminate the merger agreement if the merger is not completed on or prior to June 30, 2019 (subject to automatic extension to September 30, 2019 if the only outstanding condition to closing is the receipt of regulatory approvals), and the right of LBC to terminate the merger agreement, subject to certain conditions, if the average closing price of Colony common stock over a specified period prior to completion of the merger decreases below certain specified thresholds, or to accept a business combination transaction deemed to be superior to the merger by the LBC board of directors. If the merger is not completed, the ongoing business of LBC could be adversely affected and LBC will be subject to several risks, including the risks described elsewhere in this “Risk Factors” section.

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The merger is subject to a number of conditions which, if not satisfied or waived in a timely manner, would delay the merger or adversely impact the companies’ ability to complete the transactions.

The completion of the merger is subject to certain conditions, including, among others, the (1) approval of the merger agreement by the holders of at least a majority of the outstanding shares of LBC common stock entitled to vote at the LBC special meeting; (2) the receipt of all required regulatory approvals for the merger, without the imposition of any material on-going conditions or restrictions, and the expiration of all regulatory waiting periods; (3) the absence of any legal restraint (such as an injunction or restraining order) that would prevent the consummation of the merger; (4) the effectiveness of the registration statement of which this proxy statement/prospectus forms a part; (5) each party’s receipt of a tax opinion from its respective outside legal counsel, dated the closing date of the merger, confirming the merger qualifies as a “reorganization” within the meaning of Section 368(a) of the Code; (6) the Plan of Bank Merger in the form attached as Exhibit B to the merger agreement attached as Annex A to this document being executed and delivered; (7) the absence of 10% or more of the outstanding shares of LBC’s common stock exercising their dissenters’ rights; (8) the absence of the occurrence of a material adverse effect on LBC or Colony; and (9) other customary closing conditions set forth in the merger agreement. See “The Merger Agreement—Conditions to Completion of the Merger” on page 77. While it is currently anticipated that the merger will be completed during the first half of 2019, there can be no assurance that such conditions will be satisfied in a timely manner or at all, or that an effect, event, development or change will not transpire that could delay or prevent these conditions from being satisfied. Accordingly, there can be no guarantee with respect to the timing of the closing of the merger, whether the merger will be completed at all and when LBC shareholders will receive the merger consideration, if at all.

Colony and LBC may waive one or more of the conditions to the merger without re-soliciting shareholder approval for the merger.

Each of the conditions to the obligations of Colony and LBC to complete the merger may be waived, in whole or in part, to the extent permitted by applicable law, by agreement of Colony and LBC, if the condition is a condition to both parties’ obligation to complete the merger, or by the party for which such condition is a condition of its obligation to complete the merger. The boards of directors of Colony and LBC may evaluate the materiality of any such waiver to determine whether amendment of this proxy statement/prospectus and re-solicitation of proxies are necessary. Colony and LBC, however, generally do not expect any such waiver to be significant enough to require re-solicitation of shareholders. In the event that any such waiver is not determined to be significant enough to require re-solicitation of shareholders, the companies will have the discretion to complete the merger without seeking further shareholder approval.

Regulatory approvals may not be received, may take longer than expected or impose conditions that are not presently anticipated.

Before the transactions contemplated by the merger agreement may be completed, approvals or waivers must be obtained from various regulatory authorities, which include the Federal Reserve Board, the FDIC, the Georgia DBF, and other securities and regulatory authorities. These governmental entities may request additional information or materials regarding the regulatory applications and notices submitted by Colony and LBC, or may impose conditions on the granting of such approvals. Such conditions or changes and the process of obtaining regulatory approvals could have the effect of delaying the completion of the merger or of imposing additional costs or limitations on the combined company following the merger. The regulatory approvals may not be received at all, may not be received in a timely fashion, and may contain conditions on the completion of the merger that are not anticipated or cannot be met. There can be no assurance as to whether these and other regulatory approvals will be received, the timing of those approvals, or whether any conditions will be imposed. See “The Merger—Regulatory Approvals Required for the Merger” on page 52.

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The directors and executive officers of LBC have interests in seeing the merger completed that are different from, or in addition to, those of the other LBC shareholders.

The directors and executive officers of LBC have arrangements that provide them with interests in the merger that are different from, or in addition to, those of the shareholders of LBC generally. These interests and arrangements may create potential conflicts of interest and may influence or may have influenced the directors and executive officers of LBC to support or approve the merger and the merger agreement. See “The Merger—Interests of LBC’s Directors and Executive Officers in the Merger” beginning on page 49.

The opinion of LBC’s financial advisor does not reflect changes in circumstances between the date of the signing of the merger agreement and the completion of the merger.

LBC’s board of directors received an opinion from its financial advisor as to the fairness of the merger consideration from a financial point of view as of the date of such opinion. Subsequent changes in the operation and prospects of LBC or Colony, general market and economic conditions and other factors that may be beyond the control of LBC or Colony, may significantly alter the value of LBC or Colony or the price of the shares of Colony common stock by the time the merger is completed. The opinion does not address the fairness of the merger consideration from a financial point of view at the time the merger is completed, or as of any other date other than the date of such opinion. The opinion of LBC’s financial advisor is attached as Annex B to this proxy statement/prospectus. For a description of the opinion, see “The Merger—Opinion of LBC’s Financial Advisor” on page 41.

The merger may be completed even if Colony or LBC experiences adverse changes in its business.

In general, either Colony or LBC may refuse to complete the merger if the other party suffers a material adverse effect on its business prior to the closing of the merger. However, certain types of changes or occurrences with respect to Colony or LBC would not prevent the merger from going forward, even if the change or occurrence would have adverse effects on Colony or LBC, including the following:

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Litigation in transactions of this type are sometimes filed against the board of directors of either party that could prevent or delay the completion of the merger or result in the payment of damages following completion of the merger.

In connection with the merger, it is possible that LBC shareholders may file putative class action lawsuits against the boards of directors of Colony and/or LBC. Among other remedies, these shareholders could seek to enjoin the merger. The outcome of any such litigation would be uncertain. If a dismissal is not granted or a settlement is not reached, such potential lawsuits could prevent or delay completion of the merger and result in substantial costs to Colony and LBC. The defense or settlement of any lawsuit or claim that remains unresolved at the time the merger is consummated may adversely affect the combined company’s business, financial condition, results of operations, cash flows and market price.

Risks Related to the Combined Company Following the Merger

The combined company expects to incur substantial expenses related to the merger.

The combined company expects to incur substantial expenses in connection with completing the merger and integrating the business and operations of LBC and Colony. Although Colony and LBC have assumed that a certain level of transaction and integration expenses would be incurred, there are a number of factors beyond their control that could affect the total amount or the timing of their integration expenses. Many of the expenses that will be incurred, by their nature, are difficult to estimate accurately at the present time. As a result, the transaction and integration expenses associated with the merger could, particularly in the near term, exceed the savings that the combined company expects to achieve from the integration of the businesses following the completion of the merger.

Following the merger, the combined company may be unable to integrate LBC’s business with Colony successfully and realize the anticipated synergies and other benefits of the merger or do so within the anticipated timeframe.

The merger involves the combination of two companies that currently operate as independent companies, as well as the companies’ subsidiaries. Although the combined company is expected to benefit from certain synergies, including cost savings, the combined company may encounter potential difficulties in the integration process, including:

For all these reasons, you should be aware that it is possible that the integration process could result in the distraction of the combined company’s management, the disruption of the combined company’s ongoing business or inconsistencies in the combined company’s operations, any of which could adversely affect the ability of the combined company to maintain relationships with customers and employees or to achieve the anticipated benefits of the merger, or could otherwise adversely affect the business and financial results of the combined company.

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Following the merger, the combined company may be unable to retain key employees.

The success of the combined company after the merger will depend in part upon its ability to retain key employees. Simultaneous with the execution of the merger agreement, Colony entered into employment agreements with certain key employees of LBC, the effectiveness of which is conditioned upon the completion of the merger. However, key employees may depart either before or after the merger because of issues relating to the uncertainty and difficulty of integration or a desire not to remain with the combined company following the merger. Accordingly, no assurance can be given that LBC or Colony or, following the merger, the combined company will be able to retain key employees.

The voting power of LBC shareholders will be diluted by the merger.

The merger will result in LBC shareholders having an ownership stake in the combined company that is smaller than their current stake in LBC. Upon completion of the merger of LBC with Colony, we estimate that LBC shareholders will own approximately 12% of the issued and outstanding shares of common stock of the combined company. Consequently, LBC shareholders, as a general matter, will have less influence over the management and policies of the combined company after the effective time of the merger than they currently exercise over the management and policies of LBC.

Future capital needs could result in dilution of shareholder investment.

Colony’s board of directors may determine from time to time there is a need to obtain additional capital through the issuance of additional shares of its common stock or other securities. These issuances would dilute the ownership interests of its shareholders and may dilute the per share book value of Colony common stock. New investors may also have rights, preferences and privileges senior to Colony’s shareholders which may adversely impact its shareholders.

Risks Related to an Investment in the Combined Company’s Common Stock

The market price of the shares of common stock of the combined company may be affected by factors different from those affecting the price of shares of Colony common stock before the merger.

The results of operations of the combined company, as well as the market price of shares of the common stock of the combined company after the merger, may be affected by factors in addition to those currently affecting Colony’s or LBC’s results of operations and the market prices of shares of Colony common stock. Accordingly, the historical financial results of Colony and LBC and the historical market prices of shares of Colony common stock may not be indicative of these matters for the combined company after the merger. For a discussion of the businesses of Colony and LBC and certain risks to consider in connection with evaluating the proposals to be considered at the LBC special meeting, see the documents incorporated by reference by Colony into this proxy statement/prospectus referred to under “Where You Can Find More Information” beginning on page 100.

The market price of the combined company’s common stock may decline as a result of the merger.

The market price of the combined company’s common stock may decline as a result of the merger if the combined company does not achieve the perceived benefits of the merger or the effect of the merger on the combined company’s financial results is not consistent with the expectations of financial or industry analysts. In addition, upon completion of the merger, Colony and LBC shareholders will own interests in a combined company operating an expanded business with a different mix of assets, risks and liabilities. Current Colony and LBC shareholders may not wish to continue to invest in the combined company, or for other reasons may wish to dispose of some or all of their shares of the combined company.

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After the merger is completed, LBC shareholders who receive shares of Colony common stock in the merger will have different rights that may be less favorable than their current rights as LBC shareholders.

After the closing of the merger, LBC shareholders who receive shares of Colony common stock in the merger will have different rights than they currently have as LBC shareholders, which may be less favorable than their current rights as LBC shareholders. For a detailed discussion of the significant differences between the current rights of a shareholder of LBC and the rights of a shareholder of the combined company following the merger, see “Comparison of Rights of Colony Shareholders and LBC Shareholders” beginning on page 87.

Risks Related to Tax

The merger may have adverse tax consequences.

Each of Colony and LBC expects that the merger will qualify as a “reorganization” within the meaning of Section 368(a) of the Code. It is a condition to the respective obligations of Colony and LBC to complete the merger that each of Colony and LBC receives a tax opinion from its respective outside legal counsel, dated the closing date of the merger, to that effect. A legal opinion represents the judgment of counsel rendering the opinion and is not binding on the Internal Revenue Service or the courts. See “The Merger—Material U.S. Federal Income Tax Consequences” beginning on page 54. If the merger were to fail to qualify as a reorganization within the meaning of Section 368(a) of the Code, then each holder of LBC common stock generally would recognize gain or loss, as applicable, equal to the difference between (1) the sum of the fair market value of the shares of Colony common stock received by such U.S. holder in the merger and the amount of cash received by such U.S. holder in the merger and (2) its adjusted tax basis in the shares of LBC common stock surrendered in exchange therefor. The consequences of the merger to any particular stockholder will depend on that stockholder’s particular situation. We strongly urge you to consult your own tax advisor to determine the particular tax consequences of the merger to you.

Risks Related to Colony’s Business

There are certain risks relating to Colony’s business.

You should read and consider risk factors specific to Colony’s business that will also affect the combined company after the merger. These risks are described in the section entitled “Risk Factors” in Colony’s Annual Report on Form 10-K for the year ended December 31, 2017 and in other documents incorporated by reference into this proxy statement/prospectus. See “Where You Can Find More Information” on page 100 for the location of information incorporated by reference into this proxy statement/prospectus.

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THE LBC SPECIAL MEETING

This proxy statement/prospectus is being provided to the holders of LBC common stock as part of a solicitation of proxies by the LBC board of directors for use at the LBC special meeting to be held at the time and place specified below and at any properly convened meeting following an adjournment thereof. This proxy statement/prospectus provides the holders of LBC common stock with information they need to know to be able to vote or instruct their vote to be cast at the LBC special meeting.

General

LBC is furnishing this proxy statement/prospectus to the holders of LBC common stock as of the record date for use at LBC’s special meeting and any adjournment or postponement of its special meeting.

Date, Time and Place

The LBC special meeting will be held at LBC’s headquarters located at 101 Calumet Center Road, LaGrange, Georgia 30241 on March 21, 2019, at 3:30 p.m., Eastern Time, subject to any adjournment or postponement thereof.

Purpose of the LBC Special Meeting

At the LBC special meeting, LBC shareholders will be asked to consider and vote on the following:

Completion of the merger is conditioned on, among other things, the approval of the merger by the LBC shareholders.

No other matter can be brought up or voted upon at the LBC special meeting.

Proposal One: Merger Proposal

LBC is asking its shareholders to approve the merger proposal. After careful consideration, LBC’s board of directors determined that the merger agreement and the transactions contemplated thereby, including the merger, were advisable and in the best interests of LBC and LBC’s shareholders.

LBC shareholders should carefully read this document in its entirety, including the annexes and the documents incorporated by reference, for more detailed information concerning the merger agreement and the merger. For a detailed discussion of the merger, including the terms and conditions of the merger agreement, see “The Merger Agreement,” beginning on page 63. In addition, LBC shareholders are directed to the merger agreement, a copy of which is attached as Annex A to this document and incorporated in this document by reference.

Proposal Two: Adjournment Proposal

If, at the LBC special meeting, the number of shares of LBC common stock present or represented and voting in favor of the merger proposal is insufficient to approve the merger proposal, LBC may move to adjourn the LBC special meeting in order to enable the LBC board of directors to solicit additional proxies for approval of the merger proposal. In that event, LBC’s shareholders will be asked to vote upon the adjournment proposal and not the merger proposal.

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In the adjournment proposal, LBC is asking its shareholders to authorize the holder of any proxy solicited by its board of directors to vote in favor of granting discretionary authority to the LBC board of directors to adjourn the LBC special meeting to another time and place for the purpose of soliciting additional proxies. If LBC’s shareholders approve the adjournment proposal, LBC could adjourn the LBC special meeting and any adjourned session of the LBC special meeting and use the additional time to solicit additional proxies, including the solicitation of proxies from LBC shareholders who have previously voted. If a quorum is not present at the meeting, the meeting will not be convened to conduct business and neither the merger proposal nor the adjournment proposal will be considered. In the absence of a quorum, LBC may adjourn the meeting to a later date or time to solicit additional proxies.

Recommendation of the LBC Board of Directors

On December 17, 2018, the LBC board of directors unanimously determined that the merger agreement, the merger and the other transactions contemplated by the merger agreement are in the best interests of LBC and its shareholders, and it adopted the merger agreement and approved the merger and the other transactions contemplated by the merger agreement.

Accordingly, the LBC board of directors unanimously recommends that LBC shareholders vote as follows:

Holders of LBC common stock should carefully read this proxy statement/prospectus, including any documents incorporated by reference, and the annexes in their entirety for more detailed information concerning the merger agreement, the merger and the other transactions contemplated by the merger agreement.

Record Date; Shareholders Entitled to Vote

The record date for the LBC special meeting is February 7, 2019, which we refer to herein as the LBC record date. Only record holders of shares of LBC common stock as of the close of business (5:00 p.m. Eastern Time), on the LBC record date are entitled to notice of, and to vote at, the LBC special meeting or any adjournment thereof. At the close of business on the LBC record date, the only outstanding securities of LBC with a right to vote on the proposals were LBC common stock, with 1,447,554 shares of LBC common stock issued and outstanding. Each share of LBC common stock outstanding on the LBC record date is entitled to one vote on each proposal.

Quorum and Adjournment

No business may be transacted at the LBC special meeting unless a quorum is present. Holders representing at least a majority of the issued and outstanding shares of LBC common stock entitled to vote at the LBC special meeting must be present, in person or represented by proxy, to constitute a quorum.

Approval of the adjournment proposal requires the affirmative vote of a majority of the votes cast on the matter. No notice of an adjourned LBC special meeting need be given if the new date, time and place are announced at the special meeting before adjournment, and no new record date is required to be set. If, however, after the adjournment, the board of directors fixes a new record date for the adjourned meeting, a notice of the adjoined meeting shall be given to each shareholder of record on the new record date entitled to vote at such meeting. At any adjourned LBC special meeting, all proxies will be voted in the same manner as they would have been voted at the original convening of the LBC special meeting, except for any proxies that have been effectively revoked or withdrawn prior to the adjourned LBC special meeting.

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All shares of LBC common stock represented at the LBC special meeting, including shares that are represented but that vote to abstain, will be treated as present for purposes of determining the presence or absence of a quorum.

Vote Required for Approval; Abstentions; Failure to Vote

The required votes to approve the LBC proposals are as follows:

Proposal One: The Merger Proposal—Approving the merger proposal requires the affirmative vote of at a majority of the issued and outstanding shares of LBC common stock entitled to vote at the LBC special meeting. Failure to vote and abstentions will have the same effect as a vote AGAINST this proposal.

Proposal Two: The Adjournment Proposal—Approving the adjournment proposal requires the affirmative vote of a majority of the votes cast on the matter. Failure to vote and abstentions will have no effect on this proposal.

If you sign your proxy but do not indicate your vote, your proxy will be voted FOR each proposal.

Voting by LBC Directors and Executive Officers

At the close of business on the LBC record date, LBC directors and executive officers and their affiliates were entitled to vote 575,220 shares of LBC common stock, or approximately 39.7% of the shares of LBC common stock outstanding on that date. LBC expects that its directors and executive officers and their affiliates will vote their shares in favor of both of the LBC proposals.

LBC Common Stock Subject to Voting Agreements

All directors of LBC and Calumet Bank, solely in their capacity as shareholders of LBC, have entered into voting agreements with Colony pursuant to which they have agreed to vote their shares of LBC common stock in favor of the approval of the merger agreement and the merger and against the approval or adoption of any proposal made in opposition to the merger. As of the LBC record date, 572,863 shares of LBC common stock, or approximately 39.6% of the outstanding shares of LBC common stock entitled to vote at the LBC special meeting, are bound by the voting agreements.

Voting on Proxies by Holders of Record; Incomplete Proxies

If you were a record holder of LBC common stock at the close of business on the LBC record date, a proxy card is enclosed for your use. LBC requests that you vote your shares as promptly as possible by submitting your LBC proxy card by mail using the enclosed return envelope. If you are a registered shareholder, you may also vote via the Internet or telephone by following the instructions on the proxy card. When the accompanying proxy card is returned properly executed or if you voted via the Internet or telephone, the shares of LBC common stock represented by it will be voted at the LBC special meeting or any adjournment thereof in accordance with the instructions contained in the proxy card.

If a record holder returns an executed proxy card without an indication as to how the shares of LBC common stock represented by it are to be voted with regard to a particular proposal, the shares of LBC common stock represented by the proxy will be voted in accordance with the recommendation of the LBC board of directors and, therefore, such shares will be voted:

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At the date hereof, the LBC board of directors has no knowledge of any business that will be presented for consideration at the LBC special meeting and that would be required to be set forth in this proxy statement/prospectus or the related proxy card other than the matters set forth in LBC’s Notice of Special Meeting of Shareholders.

Your vote is important. Accordingly, if you were a record holder of LBC common stock on the LBC record date, please sign, date and return the enclosed proxy card or vote via the Internet or telephone whether or not you plan to attend the LBC special meeting in person.

Shares Held in “Street Name”

If your shares of LBC common stock are held in an account with a bank, broker or other nominee, which are referred to as shares held in “street name,” the bank, broker or other nominee is considered the shareholder of record with respect to these shares and you are the beneficial owner of these “street name” shares. If your shares are held in “street name” through a broker, bank or other nominee, you will receive instructions from your broker, bank or other nominee that you must follow in order to vote your shares. You should refer to the voting form used by that firm to determine whether you may vote by telephone, Internet or mail.

If your shares are held in “street name,” LBC recommends that you mark, date, sign and promptly mail the voting instruction form provided by your bank, broker or other nominee in accordance with the instructions provided by such nominee.

Banks, brokers and other nominees who hold shares of LBC common stock in “street name” for a beneficial owner of those shares typically have the authority to vote in their discretion on “routine” proposals when they have not received instructions from beneficial owners. However, banks, brokers and other nominees are not allowed to exercise their voting discretion with respect to the approval of matters determined to be “non-routine,” without specific instructions from the beneficial owner. The merger proposal and the adjournment proposal are non-routine matters. Accordingly, if your broker, bank or other nominee holds your shares of LBC common stock in “street name,” your broker, bank or other nominee will vote your shares of LBC common stock with respect to the merger proposal and the adjournment proposal only if you provide instructions on how to vote by filling out the voter instruction form sent to you by your broker, bank or other nominee with this proxy statement/prospectus. If you do not provide instructions to your broker, bank or other nominee with respect to either the merger proposal or the adjournment proposal, it will result in a failure to vote your shares on such proposal. Failure to vote has the same effect as a vote against the merger proposal.

Revocability of Proxies and Changes to an LBC Shareholder’s Vote

An LBC shareholder entitled to vote at the LBC special meeting may revoke a proxy at any time before such time that the proxy card for any such holders of LBC common stock must be received at the LBC special meeting by taking any of the following actions:

Merely attending the LBC special meeting will not, by itself, revoke your proxy; an LBC shareholder must cast a subsequent vote at the LBC special meeting using forms provided for that purpose. The last valid vote that LBC receives before the polls close at the LBC special meeting is the vote that will be counted.

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If you hold your shares in “street name” through a bank, broker or other nominee (referred to in this proxy statement/prospectus as a “beneficial owner”), you must contact such bank, broker or nominee if you desire to revoke your proxy as described above.

Solicitation of Proxies

The LBC board of directors is soliciting proxies for the LBC special meeting from holders of its LBC common stock entitled to vote at the LBC special meeting. In accordance with the merger agreement, LBC will pay its own cost of soliciting proxies from its shareholders, including the cost of mailing this proxy statement/prospectus. In addition to solicitation of proxies by mail, proxies may be solicited by LBC’s officers, directors and regular employees, without additional remuneration, in person, by telephone or other means of communication.

LBC will make arrangements with brokerage houses, custodians, nominees and fiduciaries to forward proxy solicitation materials to beneficial owners of LBC common stock. LBC may reimburse these brokerage houses, custodians, nominees and fiduciaries for their reasonable expenses incurred in forwarding the proxy materials.

Attending the LBC Special Meeting; Voting in Person

Only record holders of LBC common stock at the close of business on the record date, their duly appointed proxies, and invited guests may attend the LBC special meeting. However, only holders of LBC common stock will be entitled to vote.

A shareholder who holds shares in “street name” through a broker, bank, trustee or other nominee who desires to attend the LBC special meeting in person must bring proof of beneficial ownership as of the record date, such as a letter from the broker, bank, trustee or other nominee that is the record owner of such beneficial owner’s shares, a brokerage account statement or the voting instruction form provided by the broker.

A person who holds a validly executed proxy entitling such person to vote on behalf of a record owner of LBC common stock who desires to attend the LBC special meeting in person must also bring the validly executed proxy naming such person as the proxy holder, signed by the LBC shareholder of record, and proof of the signing shareholder’s record ownership as of the record date.

No cameras, recording equipment or other electronic devices will be allowed in the meeting room. Failure to provide the requested documents at the door or failure to comply with the procedures for the LBC special meeting may prevent LBC shareholders from being admitted to the LBC special meeting.

Assistance

If you need assistance in completing your proxy card, have questions regarding the LBC special meeting or would like additional copies of this proxy statement/prospectus, please contact Leonard H. Bateman, Jr., President and Chief Executive Officer, at (706) 884-6000.

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THE MERGER

The following discussion contains certain information about the merger. The discussion is subject, and qualified in its entirety by reference, to the merger agreement attached as Annex A to this proxy statement/prospectus. We urge you to read carefully this entire proxy statement/prospectus, including the merger agreement attached as Annex A, for a more complete understanding of the merger.

General

Each of Colony’s and LBC’s respective boards of directors has unanimously approved the merger agreement and the transactions contemplated by the merger agreement. The merger agreement provides for the acquisition of LBC by Colony pursuant to the merger of LBC with and into Colony, with Colony as the surviving company, which we refer to as the merger. Immediately after the merger, Calumet Bank, a wholly owned Georgia-state bank subsidiary of LBC, will be merged with and into Colony Bank, a wholly owned bank subsidiary of Colony, with Colony Bank as the surviving bank, which we refer to as the bank merger.

Purchase Price and Purchase Price Adjustments

At the effective time of the merger, each outstanding share of LBC common stock issued and outstanding immediately prior to the effective time of the merger will be converted into the right to receive, at the election of each LBC shareholder, either (i) $23.50 in cash, or (ii) 1.3239 shares of Colony common stock. The election of stock consideration or cash consideration will be subject to proration such that 55% of the issued and outstanding shares of LBC common stock will be exchanged for Colony common stock and 45% will be exchanged for cash, and at least 50% of the merger consideration will be paid in Colony common stock. As a result, if the aggregate number of shares with respect to which a valid stock or cash election has been made exceeds these limits, shareholders who have elected the form of merger consideration that has been over-subscribed will receive a mixture of both stock consideration and cash consideration in accordance with the proration procedures set forth in the merger agreement so that such limits are not exceeded. The stock consideration and the cash consideration are collectively referred to as the merger consideration. Each option or warrant to purchase shares of LBC common stock shall be cancelled as of the effective time of the merger and converted into the right to receive a cash payment equal to the product of (i) the total number of shares of LBC common stock subject to such option or warrant, as applicable, times (ii) the excess, if any, of $23.50 over the exercise price per share of LBC common stock subject to such option or warrant, as applicable.

Colony will not issue any fractional shares of Colony common stock in the merger. LBC shareholders who would otherwise be entitled to a fractional share of Colony common stock upon the completion of the merger will instead receive an amount in cash (without interest and rounded to the nearest whole cent) determined by multiplying the (i) fractional share interest in Colony common stock, rounded to the nearest one hundredth of a share, to which such holder would otherwise be entitled by (ii) $23.50.

LBC shareholders are being asked to approve the merger agreement and the merger. See “The Merger Agreement” for additional and more detailed information regarding the legal documents that govern the merger, including information about the conditions to the completion of the merger and the provisions for terminating or amending the merger agreement.

Background of the Merger

In fulfilling their respective obligations to the shareholders of LBC, the members of the board of directors of LBC (the “LBC Board”) have often considered the path forward for LBC, Calumet Bank, and the greater LaGrange community as a whole. In their consideration, the members of the board of directors of LBC explored options that included continuing LBC’s on-going operations as an independent institution, acquiring other depository institutions or branch offices, and entering into a strategic merger with a similarly sized or larger

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institution. The LBC Board also periodically reviewed, often with input from BSP and other advisors, the competitive environment in LBC’s market area and merger and acquisition activity in the financial services industry across the nation and, specifically, in the West Georgia market.

Beginning in late 2017, the LBC Board determined that it was in the best interest of LBC’s shareholders and other constituents to look seriously into the potential for a strategic transaction involving the merger of LBC and/or its wholly owned subsidiary, Calumet Bank, with and into a similarly sized or larger financial institution. The LBC Board’s determination was based, in part, on the relatively limited liquidity of LBC common stock as compared to market valuations for whole bank transactions, which have reached levels similar to pre-recession. This analysis, coupled with the additional capital that would be required to carry out longer-term strategic goals of LBC and Calumet, caused the LBC Board to conclude that it was in the best interest of LBC, Calumet Bank and their respective shareholders, customers, and employees to explore a whole-bank transaction.

The LBC Board reviewed materials from BSP and other investment banking firms with respect to the various strategic options available to LBC. BSP and the other investment banking firms are nationally recognized and have substantial experience with respect to transactions involving community based financial institutions and their holding companies. After considering the qualifications and experience of the firms, including the terms of the draft engagement letters received from each firm and the presentations that each firm made, the LBC Board decided to retain BSP and executed an engagement letter with BSP dated January 22, 2018. Pursuant to the engagement letter, LBC engaged BSP on an exclusive basis to render financial advisory and investment banking services to LBC in connection with its consideration of potential business combination transactions.

During the early part of 2018, BSP and LBC management met with a number of bank management teams to familiarize themselves with potential future acquirers. In mid-July 2018, BSP was contacted by an investment banking firm representing a potential acquirer seeking to preempt a competitive sale process by submitting an offer that it considered to be superior in terms of valuation in exchange for the opportunity to pursue exclusive negotiations. Following mutual due diligence and negotiations, the decision was made to terminate exclusive negotiations in favor of initiating a full auction process to market the sale of LBC.

During the month of September 2018, BSP contacted thirty-eight (38) parties on a no-name basis regarding participation in due diligence and negotiations regarding a strategic transaction with LBC, of which twenty-five (25) elected not to participate and the remaining thirteen (13) institutions (including Colony) signed non-disclosure agreements and received a confidential information memorandum relating to LBC’s operations, financial performance and transaction considerations. The thirteen institutions were provided with access to confidential information regarding LBC in order for such parties to undertake their preliminary due diligence reviews. BSP requested that the parties submit non-binding Letters of Intent (“LOIs”) by October 15, 2018.

BSP received three LOIs with varying terms and transaction structures. One LOI contemplated an all cash transaction and another LOI provided options for pricing for an all-stock, an all-cash, or a combined cash/stock transaction. The third LOI, submitted by Colony, provided an initial per-share price and contemplated a combined cash/stock transaction. After review and consideration of the three LOIs and each potential acquirer, the LBC Board elected to enter into exclusive negotiations with Colony by way of a vote of the LBC Board at a duly called meeting thereof held on October 18, 2018.

On October 22, 2018 Colony and LBC entered into a revised LOI which provided for, among other customary provisions, a per share price equal to $23.50, to be paid in both cash (45%) and stock (55%). The mechanics for setting the stock exchange ratio for the stock consideration portion of the transaction was to be mutually agreed upon by both parties during the stated exclusivity period. From October 22 through November 13, Colony, together with their legal counsel, investment bankers, and advisors conducted due diligence on LBC and both parties continued to negotiate the exchange ratio.

On November 13, 2018 Colony and LBC affirmed the terms of the previously executed LOI and agreed upon a stock exchange ratio in which each share of LBC common stock would be exchanged for 1.3239 shares of

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Colony common stock pursuant the stock consideration equates to 55% of the total transaction consideration. Alston & Bird LLP, outside counsel to Colony, provided an initial draft of the proposed merger agreement to LBC’s counsel, James-Bates-Brannan-Groover-LLP. Between November 13 and December 17, LBC, together with their legal counsel, investment bankers, and advisors conducted reverse due diligence on Colony and continued to negotiate the terms of the definitive merger agreement and related documents.

On December 17, 2018, the LBC Board met at its regularly scheduled meeting to review and discuss the proposed merger and the merger agreement. At this meeting, the LBC Board received presentations from its legal counsel, James-Bates-Brannan-Groover-LLP, and its financial advisor, BSP. Following this discussion, the LBC Board unanimously voted to approve the merger agreement and the other transactions contemplated by the merger agreement, including the merger, and authorized LBC’s executives to execute the merger agreement.

On December 17, 2018, Colony’s board of directors held a special meeting to review and discuss the proposed merger and the merger agreement. At this meeting, Colony’s board of directors received presentations from its legal counsel, Alston & Bird LLP, and its financial advisor, Hovde Group LLC. Following this discussion, Colony’s board of directors unanimously voted to approve the merger agreement and the other transactions contemplated by the merger agreement, including the merger, and authorized Colony’s executives to execute the merger agreement.

On December 17, 2018, the merger agreement and related documents were executed and the parties issued a press release announcing the proposed merger the following morning.

Colony’s Reasons for the Merger

In reaching its decision to approve and adopt the merger agreement, the merger and the other transactions contemplated by the merger agreement, including the issuance of Colony common stock as the merger consideration, Colony board of directors considered a number of factors, including the following material factors:

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Colony’s board of directors also considered potential risks relating to the merger including the following:

The foregoing discussion of the factors considered by Colony board of directors is not intended to be exhaustive, but, rather, includes the material factors considered by Colony board of directors. In reaching its decision to approve and adopt the merger agreement, the merger and the other transactions contemplated by the merger agreement, including the issuance of Colony common stock as the merger consideration, Colony board of directors did not quantify or assign any relative weights to the factors considered, and individual directors may have given different weights to different factors. Colony board of directors considered all these factors as a whole and overall considered the factors to be favorable to, and to support, its determination.

LBC’s Reasons for the Merger

After careful consideration, LBC’s board of directors determined that it was advisable and in the best interests of LBC and its shareholders for LBC to enter into the merger agreement with Colony. Accordingly, LBC’s board unanimously recommends that LBC’s shareholders vote “FOR” the approval of the merger agreement and the merger.

The board of directors of LBC has considered the terms and provisions of the merger agreement and concluded that they are fair to the shareholders of LBC and that the merger is in the best interests of LBC and its shareholders.

The board of directors of LBC believes that the merger will help create a stronger regional bank with the tools and resources necessary to enhance long-term value for LBC’s shareholders. In addition, the LBC Board believes that the customers served by LBC and the West Georgia market as a whole will benefit from the resulting institution’s enhanced abilities to meet their banking needs.

In reaching its decision to approve the merger agreement, the LBC Board consulted with management, as well as with LBC’s financial and legal advisors, and considered a variety of factors, including the following:

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In the course of its deliberation, the LBC Board also considered a variety of risks and other countervailing factors, including:

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The foregoing discussion of the information and factors considered by LBC’s board of directors is not exhaustive, but includes all material factors considered by the LBC Board. In view of the wide variety of factors considered by the LBC Board in connection with its evaluation of the merger and the complexity of these matters, the LBC Board did not consider it practical to, and did not attempt to, quantify, rank or otherwise assign relative weights to the specific factors that it considered in reaching its decision. The LBC Board evaluated the factors described above, including asking questions of LBC’s management and LBC’s legal and financial advisors. In considering the factors described above, individual members of the LBC Board may have given different weights to different factors. The LBC Board relied on the experience and expertise of its financial advisors for quantitative analysis of the financial terms of the merger. See “—Opinion of LBC’s Financial Advisor” below. It should also be noted that this explanation of the reasoning of the LBC Board and all other information presented in this section is forward-looking in nature and, therefore, should be read in light of the factors discussed under the heading “Cautionary Statement Regarding Forward-Looking Statements” on page 18.

After evaluating these factors and consulting with its legal counsel and financial advisors, the LBC Board determined that the merger agreement was advisable and in the best interests of LBC’s shareholders. Accordingly, the LBC Board has unanimously adopted the merger agreement and approved the merger.

THE LBC BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS THAT YOU VOTE “FOR” APPROVAL OF THE MERGER AGREEMENT.

Opinion of LBC’s Financial Advisor

LBC retained BSP on an exclusive basis to render financial advisory and investment banking services and to render a written opinion to the LBC Board as to the fairness, from a financial point of view, of the merger consideration to be paid under the terms of the merger agreement. BSP is an investment banking firm that specializes in providing financial advisory and investment banking services to financial institutions. BSP has been involved in many bank-related business combinations. No limitations were imposed by LBC upon BSP with respect to rendering its opinion.

At the December 17, 2018, meeting at which the LBC Board considered and approved the merger agreement, BSP delivered its written opinion that, as of such date, the merger consideration to be received was fair from a financial point of view.

The full text of BSP’s opinion is attached as Annex B to this proxy statement/prospectus. The opinion outlines the procedures followed, assumptions made, matters considered, and qualifications and limitations on the review undertaken by BSP in rendering its opinion. The description of the opinion set forth below is qualified in its entirety by reference to the opinion. We urge you to read the entire opinion carefully in connection with your consideration of the proposed merger.

The opinion speaks only as of the date of the opinion. The opinion was directed to the LBC Board and is directed only to the fairness, from a financial point of view, of the merger consideration to be received. It does not address the underlying business decision to engage in the merger or any other aspect of the merger and is not a recommendation to any shareholder as to how such shareholder should vote with respect to the merger or any other matter.

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For purposes of the opinion and in connection with its review of the proposed transaction, BSP, among other things, completed the following:

BSP assumed and relied, without independent verification, upon the accuracy and completeness of all of the financial and other information provided to it by LBC, Colony, and each company’s respective representatives and of the publicly available information for LBC and Colony that BSP reviewed. BSP is not an expert in the evaluation of allowances for loan losses and has not independently verified such allowances, and relied on and assumed that such allowances of LBC and Colony at September 30, 2018 were adequate to cover such losses and complied fully with applicable law, regulatory policy, and sound banking practices as of the date of such financial statements. BSP was not retained to, and did not, conduct a physical inspection of any of the properties or facilities of LBC. BSP also did not make any independent evaluation or appraisal of the assets, liabilities, or prospects of LBC, was not furnished with any such evaluation or appraisal, and did not review any individual credit files. The opinion of BSP was necessarily based on economic, market, and other conditions as in effect on, and the information made available to it as of, the date thereof. BSP expressed no opinion on matters of a legal, regulatory, tax, or accounting nature or the ability of the merger, as set forth in the merger agreement, to be consummated. No opinion was expressed as to whether any alternative transaction might be more favorable to LBC than the merger.

BSP, as part of its investment banking business, is regularly engaged in the valuation of banks and bank holding companies and various other financial services companies in connection with mergers and acquisitions, private placements of securities, and valuations for other purposes. In rendering its fairness opinion, BSP acted on behalf of the LBC Board.

BSP’s opinion is limited to the fairness, from a financial point of view, of the merger consideration to be received under the terms of the merger agreement and does not address the ability of the merger to be consummated, the satisfaction of the conditions precedent contained in the merger agreement, or the likelihood of the merger receiving regulatory approval. Although BSP was retained on behalf of the LBC Board, BSP’s opinion did not constitute a recommendation to any director of LBC as to how such director or any shareholder should vote with respect to the merger agreement.

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Based upon and subject to the foregoing, and based on BSP’s experience as investment bankers, BSP’s activities as described above, and other factors deemed relevant, BSP rendered its opinion that, as of December 17, 2018, the merger consideration received is fair to the holders of LBC common stock, from a financial point of view.

The following is a summary of material analyses performed by BSP in connection with its opinion to the LBC Board on December 17, 2018. The summary does not purport to be a complete description of the analyses performed by BSP but summarizes the material analyses performed and presented in connection with such opinion.

Financial Analysis

In rendering its opinion, BSP performed a variety of financial analyses. The summary below is not a complete description of all the analyses underlying BSP’s opinion or the presentation made by BSP to the LBC Board, but is a summary of the material analyses performed and presented by BSP. The summary includes information presented in tabular format. In order to fully understand the financial analyses, these tables must be read together with the accompanying text. The tables alone do not constitute a complete description of the financial analyses. The preparation of a fairness opinion is a complex process involving subjective judgments as to the most appropriate and relevant methods of financial analysis and the application of those methods to the particular circumstances. The process, therefore, is not necessarily susceptible to a partial analysis or summary description. BSP believes that its analysis must be considered as a whole and that selecting portions of the factors and analyses to be considered without considering all factors and analyses, or attempting to ascribe relative weights to some or all such factors and analyses, could create an incomplete view of the evaluation process underlying its opinion. Also, no company included in the comparative analyses described below is identical to LBC or Colony and no transaction is identical to the merger. Accordingly, an analysis of comparable companies or transactions involves complex considerations and judgments concerning differences in financial and operating characteristics of the companies and other factors that could affect the public trading values or merger transaction values, as the case may be, of LBC and Colony and the companies to which they are being compared. In arriving at its opinion, BSP did not attribute any particular weight to any analysis or factor that it considered. Rather, BSP made qualitative judgments as to the significance and relevance of each analysis and factor. BSP did not form an opinion as to whether any individual analysis or factor (positive or negative) considered in isolation supported or failed to support its opinion; rather, BSP made its determination as to the fairness of the merger consideration on the basis of its experience and professional judgment after considering the results of all of the analyses taken as a whole.

In performing its analysis, BSP also made numerous assumptions with respect to industry performance, business and economic conditions and various other matters, many of which are beyond the control of LBC, Colony, and BSP. The analyses performed by BSP are not necessarily indicative of actual values or future results, both of which may be significantly more or less favorable than suggested by such analyses. BSP prepared its analyses solely for purposes of rendering its opinion and presented such analyses to the LBC Board at its December 17, 2018, meeting. Estimates of the values of companies do not purport to be appraisals or necessarily reflect the prices at which companies or their securities may actually be sold. Such estimates are inherently subject to uncertainty, and actual values may be materially different. Accordingly, BSP’s analysis does not necessarily reflect the value of LBC or Colony common stock or the prices at which LBC common stock or Colony common stock may be sold at any time. BSP’s analysis was among a number of factors taken into consideration by the LBC Board in making its determination to approve the merger agreement and should not be viewed as determinative of the merger consideration or the decision of the LBC board of directors or management with respect to the fairness of the merger.

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Summary of Merger Consideration and Implied Transaction Metrics

Under the terms of the merger agreement, each share of LBC common stock outstanding prior to the merger will be converted into and exchanged for the right to receive the following:

Holders of record of LBC common stock may elect to receive shares of Colony common stock or cash in exchange for their shares of LBC common stock, provided that the aggregate number of shares of LBC common stock to be converted into the per share stock consideration shall be 55% of the total outstanding shares number.

As part of its analysis, BSP reviewed metrics relative to merger and acquisition transactions involving U.S. banks. The criteria for the merger peers consisted of the following: whole-bank transactions announced on or after January 1, 2016 involving Georgia banks with less than $1.0B in total assets; whole-bank transactions announced on or after June 30, 2017 with target non-performing assets/total assets between 0.05% and 0.40% and total assets between $150mm and $400mm; whole-bank transactions announced on or after June 30, 2017 with target tangible common equity/tangible assets less than 9.5% and total assets between $150mm and $400mm; whole-bank transactions announced on or after June 30, 2017 with target last-12-months return on average assets between 0.70% and 0.90% and total assets between $150mm and $400mm; whole-bank transactions announced on or after June 30, 2017 involving banks in the Southeastern United States with total assets between $150mm and $400mm. Each of the peer groups established by BSP excluded transactions involving private investors/investor groups, and transactions involving troubled bank targets.

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Using the latest publicly available information prior to the announcement of the relevant transaction, BSP reviewed the following transaction metrics for each selected merger transaction group: transaction price to last-12-months earnings, transaction price to tangible book value, transaction price to total assets and tangible book premium to core deposits. BSP compared the indicated transaction multiples for the merger to the 25th percentile, 75th percentile, and median multiples of each merger transaction group.