As filed with the U.S. Securities and Exchange Commission on September 28, 2018

Registration Statement No. 333-226345

U.S. SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

AMENDMENT NO. 1

TO

FORM F-4

REGISTRATION STATEMENT

UNDER

THE SECURITIES ACT OF 1933

Woori Bank

(Exact Name of Registrant as Specified in its Charter)

Woori Bank

(Translation of Registrant’s Name into English)

51, Sogong-ro, Jung-gu, Seoul 04632, Korea

Telephone: +82-2-2125-2337 / Fax: +82-505-003-2512

(Address and telephone number of Registrant’s principal executive offices)

Woori Bank New York Agency

245 Park Avenue, 43rd Floor

New York, NY 10167

Telephone: (212) 949-1900

(Name, address and telephone number of agent for service)

Copies to:

Yong G. Lee, Esq.

Cleary Gottlieb Steen & Hamilton LLP

Foreign Legal Consultant Office

19F, Ferrum Tower

19, Eulji-ro 5-gil, Jung-gu

Seoul 04539, Korea

Approximate date of commencement of proposed sale to the public: As soon as practicable after the effective date of this Registration Statement.

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act of 1933, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.  ☐

If this Form is a post-effective amendment filed pursuant to Rule 462(d) under the Securities Act of 1933, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.  ☐

If applicable, place an X in the box to designate the appropriate rule provision relied upon in conducting this transaction:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933.

If an emerging growth company that prepares its financial statements in accordance with U.S. GAAP, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards† provided pursuant to Section 7(a)(2)(B) of the Securities Act.  ☐

CALCULATION OF REGISTRATION FEE

The Registrant hereby amends this Registration Statement on such date or dates as may be necessary to delay its effective time until the Registrant shall file a further amendment which specifically states that this Registration Statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act of 1933, as amended, or until this Registration Statement shall become effective on such date as the Securities and Exchange Commission, acting pursuant to said Section 8(a), may determine.

The information in this preliminary prospectus is not complete and may be changed. We may not ask you to vote until the registration statement filed with the Securities and Exchange Commission is effective. This preliminary prospectus is not an offer to sell these securities, and we are not soliciting offers to buy these securities, in any jurisdiction where the offer or sale is not permitted.

Subject to Completion, dated September 28, 2018

Extraordinary General Meeting of Shareholders of Woori Bank

STOCK TRANSFER PROPOSAL

The board of directors of Woori Bank has approved the adoption of a financial holding company structure for our bank pursuant to a “comprehensive stock transfer” under Article 360-15 of the Korean Commercial Code, whereby holders of our common stock will transfer all of their shares to a new financial holding company, to be named “Woori Financial Group Inc.” and in return receive shares of Woori Financial Group common stock. In the stock transfer, each holder of one share of our common stock will receive one share of Woori Financial Group common stock, par value W5,000 per share. Holders of our American depositary shares, each of which represents three shares of our common stock, will receive one Woori Financial Group American depositary share for every American depositary share they own (subject to payment of certain applicable depositary fees). In connection with the stock transfer, Woori Financial Group will issue approximately 676,000,000 shares of its common stock to holders of our common stock. Our common stock is listed on the KOSPI Market of the Korea Exchange under the identifying code “000030,” and our American depositary shares are listed on the New York Stock Exchange under the symbol “WF.” Following the stock transfer, the common stock and American depositary shares of Woori Financial Group are expected to be similarly listed on such stock exchanges.

We believe that the adoption of a financial holding company structure through the proposed stock transfer will help us increase customer satisfaction, generate synergies and maximize profitability, by creating an integrated system among our affiliated companies and allowing us to effectively provide various financial services, including comprehensive one-stop asset management services customized for clients, based on active expansion of non-banking and global business operations.

Before we can proceed with the stock transfer, the proposed stock transfer plan must be approved at an extraordinary general meeting of our shareholders to be held on the fifth floor of the Woori Bank Head Office Building, 51, Sogong-ro, Jung-gu, Seoul, Korea on                                        , 2018 at        a.m. local time. At the extraordinary general meeting of our shareholders, the shareholders will vote on the approval of the stock transfer plan and the approval of certain other matters as described in this prospectus.

This prospectus has been prepared for our shareholders and holders of our American depositary shares residing in the United  States to provide information about the proposed stock transfer and the extraordinary general meeting of our shareholders. We encourage you to read this document in its entirety, including the section entitled “Risk Factors ” that begins on page 7.

Holders of our common stock will be entitled to attend and vote, either in person or by proxy, at the extraordinary general meeting if they are recorded on our shareholder register on                                        , 2018, which is    days prior to the date of the meeting. Holders of our American depositary shares will be entitled to instruct Citibank, N.A., as depositary, as to how to vote their underlying shares of our common stock at the extraordinary general meeting in accordance with the procedures set forth in this prospectus, if those holders were recorded on such depositary’s register on                                         , 2018.

Your vote is important, regardless of the number of shares you own. On behalf of our board of directors, I urge you to vote in favor of the stock transfer.

Tae-Seung Sohn

President and Chief Executive Officer

Woori Bank

WE ARE NOT ASKING YOU FOR A PROXY AND

YOU ARE REQUESTED NOT TO SEND US A PROXY.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of the securities to be issued in connection with the stock transfer or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

This prospectus is dated                                        , 2018 and is expected to be first mailed to shareholders on or about such date.

WHERE YOU CAN FIND MORE INFORMATION

We have filed a registration statement on Form F-4 to register with the U.S. Securities and Exchange Commission, or the SEC, our common stock to be delivered in connection with the stock transfer. This prospectus is a part of that registration statement. As allowed by SEC rules, this prospectus does not contain all the information you can find in the registration statement or the exhibits to the registration statement.

We are subject to the information reporting requirements of the U.S. Securities Exchange Act of 1934 and, in accordance therewith, are required to file reports, including annual reports on Form 20-F, and other information with the SEC. These materials, including annual reports and the exhibits thereto, may be read and copied at the SEC’s Public Reference Room at 100 F Street, N.E., Washington, D.C. 20549 by calling the SEC at 1-800-SEC-0330. We are also required to make filings with the SEC by electronic means. Any filings we make electronically will be available to the public over the Internet at the SEC’s website at http://www.sec.gov.

The SEC permits us to “incorporate by reference” information into this prospectus. This means that we can disclose important information to you by referring to another document filed separately with the SEC. The information incorporated by reference is deemed to be part of this prospectus, except for any information superseded by information contained directly in this prospectus.

This prospectus incorporates by reference the documents set forth below that have been previously filed with or furnished to the SEC. These documents contain important information about us and our financial condition.

We also incorporate by reference into this prospectus additional documents that we may file with the SEC from the date of this prospectus to the date of the extraordinary general meeting. These include any amendments to our annual report on Form 20-F, as well as any of our current reports on Form 6-K specifically identified as being incorporated by reference into this prospectus.

Documents incorporated by reference are available without charge, excluding all exhibits unless an exhibit has been specifically incorporated by reference into this prospectus. Shareholders may obtain documents incorporated by reference into this prospectus from the SEC, as described above, or by requesting them in writing, by telephone or by e-mail from us at the following address:

Woori Bank

Investor Relations Department

51, Sogong-ro, Jung-gu

Seoul 04632, Korea

Telephone: +82-2-2125-2337

Facsimile: +82-505-003-2512

e-mail: woori.ir@wooribank.com

If you would like to request documents from us, please do so by                                         , 2018 in order to receive them before the extraordinary general meeting.

You should rely only on the information contained in this prospectus to vote on the stock transfer. We have not authorized anyone to provide you with information different from that contained in the prospectus. This prospectus is dated                                         , 2018. You should not assume that the information contained in this prospectus is accurate as of any other date. Neither the mailing of this prospectus, nor the delivery of shares of our common stock, cash or other consideration should be deemed to create any implication to the contrary.

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TABLE OF CONTENTS

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TABLE OF CONTENTS

(continued)

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TABLE OF CONTENTS

(continued)

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NOTES

Our fiscal year ends on December 31 of each year. All references to a particular year are to the year ended December 31 of that year.

Unless otherwise indicated, the financial information presented in this document has been prepared in accordance with International Financial Reporting Standards, or IFRS, as issued by the International Accounting Standards Board, or the IASB.

Any discrepancies in any table between totals and the sums of the amounts listed are due to rounding.

References to “Korea” are to the Republic of Korea.

CURRENCIES AND EXCHANGE RATES

All references to “Won” or “W” in this prospectus are to the currency of Korea, and all references to “Dollars,” “U.S. dollars,” “$” or “U.S.$” are to the currency of the United States of America.

The tables below set forth, for the periods and dates indicated, information concerning the noon buying rate for Won, expressed in Won per one U.S. dollar. The “noon buying rate” is the rate in New York City for cable transfers in foreign currencies as certified for customs purposes by the Federal Reserve Bank of New York. Unless otherwise stated, translations of Won amounts into U.S. dollars in this prospectus were made at the noon buying rate in effect on June 30, 2018 which was W1,111.8 to U.S.$1.00. We do not intend to imply that the Won or U.S. dollar amounts referred to herein could have been or could be converted into U.S. dollars or Won, as the case may be, at any particular rate, or at all. On                                        , 2018, the noon buying rate was W            = U.S.$1.00.

Source: Federal Reserve Bank of New York

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RISK FACTORS

As a result of the adoption of a financial holding company structure through the proposed stock transfer, our businesses will be subject to the following new or increased risks. In addition to the risks described below, we will continue to be subject to the risks described in the documents that we have filed with the SEC that are incorporated by reference into this prospectus. You should carefully consider the following risk factors as well as the other information contained or incorporated into this prospectus in deciding whether to vote in favor of the stock transfer.

Risks Relating to the Stock Transfer

The stock transfer is subject to various conditions and may not be completed as scheduled or at all.

Under the proposed stock transfer plan, the consummation of the stock transfer is subject to a number of conditions, including the absence of any suspension of the stock transfer by us as a result of the exercise of appraisal rights in respect of more than 15% of the total issued shares of our common stock. See “The Stock Transfer—Conditions to the Completion of the Stock Transfer.” Under Korean law, our shareholders who oppose the stock transfer may exercise appraisal rights and require us to purchase their shares if the stock transfer is completed. In the event that the number of shares of our common stock for which appraisal rights are exercised exceeds 15% of the total issued shares of our common stock, we may not complete the stock transfer as contemplated or at all. Furthermore, regulatory authorities in Korea or elsewhere may seek to block or delay the stock transfer or may impose conditions that reduce the anticipated benefits of the stock transfer or make it difficult to complete as planned. Accordingly, even if the stock transfer is approved at the extraordinary general meeting of our shareholders, the stock transfer may not be completed as scheduled or at all. If the stock transfer is not completed, we would fail to realize the anticipated benefits of the new financial holding company structure that will be created pursuant to the stock transfer. For a description of the anticipated benefits of adopting a financial holding company structure, see “The Stock Transfer—Reasons for the Stock Transfer.”

The exercise of appraisal rights in respect of a significant number of shares of our common stock could increase the costs of the stock transfer, reduce the capital of Woori Financial Group and hurt its financial condition.

Under Korean law, our shareholders who oppose the stock transfer may exercise appraisal rights and require us to purchase their shares if the stock transfer is completed. We expect to pay W16,079 for each share of our common stock properly submitted to us for appraisal, which is the purchase price for such shares determined in accordance with the formula prescribed under Korean law to be applied in the event that the dissenting shareholders and we fail to agree on a purchase price through negotiations. For a description of the method of calculating the purchase price for shares in respect of which appraisal rights have been exercised, see “The Stock Transfer—Dissent and Appraisal Rights.” If shareholders exercise appraisal rights in respect of a significant number of our shares that does not exceed 15% of the total issued shares of our common stock, we will be required to complete the stock transfer by expending funds to purchase such shares, which could reduce or adversely affect the capital of Woori Financial Group and its financial condition.

Holders of our American depositary shares will not have any dissent and appraisal rights.

Our shareholders who oppose the stock transfer may exercise appraisal rights under Korean law and require us to purchase their shares if the stock transfer is completed. However, if you are a holder of our American depositary shares, you will not have any appraisal rights in respect of the stock transfer even if you oppose it. The deposit agreement for our American depositary shares facility does not require the depositary to take any action in respect of exercising dissent and appraisal rights.

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We may fail to realize the anticipated benefits of the stock transfer and the new financial holding company structure.

The success of the stock transfer and the new financial holding company structure that will be created pursuant to such stock transfer will depend, in large part, on the ability of Woori Financial Group to realize the anticipated synergies, growth opportunities and cost savings from coordinating and integrating the businesses of its various subsidiaries.

Although we plan to integrate our operations and our subsidiaries’ operations under the financial holding company structure, the subsidiaries of the new financial holding company, including us, will generally continue to operate as independent entities with separate management and staff. As a result, Woori Financial Group’s ability to direct its subsidiaries’ day-to-day operations may be limited. In addition, the integration of Woori Financial Group’s subsidiaries’ separate businesses and operations, as well as those of any companies it may acquire in the future, into the financial holding company structure could require a significant amount of time, financial resources and management attention. Moreover, that process could place a burden on our operations (including our risk management operations) or information technology systems and produce unintended inconsistencies in our standards, controls, procedures or policies. The realization of the anticipated benefits of our new financial holding company structure may be blocked, delayed or reduced as a result of many factors, some of which may be outside our control. These factors include:

Accordingly, we may not be able to realize the anticipated benefits of the new financial holding company structure that will be created pursuant to the stock transfer, and our business, results of operations and financial condition may suffer as a result.

Our financial holding company will depend on limited forms of funding to fund its operations.

Woori Financial Group will have no significant assets other than the shares of its subsidiaries. Its primary sources of funding and liquidity will be dividends from its subsidiaries, sales of the interests in its subsidiaries and direct borrowings and issuances of equity or debt securities at the holding company level. In addition, as a financial holding company, Woori Financial Group will be required to meet certain minimum financial ratios under Korean law, including with respect to liquidity and capital adequacy. Woori Financial Group’s ability to meet its obligations to its direct creditors and employees and its other liquidity needs and regulatory requirements will depend on timely and adequate distributions from its subsidiaries and its ability to sell its securities or obtain credit from its lenders.

The ability of the subsidiaries of Woori Financial Group, including us, to pay dividends to Woori Financial Group will depend on the financial condition and operating results of such subsidiaries. In the future,

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the subsidiaries may enter into agreements, such as credit agreements with lenders or indentures relating to high-yield or subordinated debt instruments, that impose restrictions on their ability to make distributions to Woori Financial Group, and the terms of future obligations and the operation of Korean law could prevent the subsidiaries from making sufficient distributions to Woori Financial Group to allow it to make payments on its outstanding obligations. See “—As a financial holding company, Woori Financial Group will largely depend on receiving dividends from its subsidiaries to pay dividends on its common stock.” Any delay in receipt of or shortfall in payments to Woori Financial Group from its subsidiaries could result in Woori Financial Group’s inability to meet its liquidity needs and regulatory requirements, including minimum liquidity and capital adequacy ratios, which may disrupt our operations at the holding company level.

In addition, creditors of Woori Financial Group will generally not be able to assert claims on the assets of the subsidiaries of Woori Financial Group. Furthermore, Woori Financial Group’s inability to sell its securities or obtain funds from its lenders on favorable terms, or at all, could also result in Woori Financial Group’s inability to meet its liquidity needs and regulatory requirements and may disrupt our operations at the holding company level.

As a financial holding company, Woori Financial Group will largely depend on receiving dividends from its subsidiaries to pay dividends on its common stock.

Since the principal assets at the holding company level will be the shares of its subsidiaries, Woori Financial Group’s ability to pay dividends on its common stock will largely depend on dividend payments from those subsidiaries. Those dividend payments are subject to the Korean Commercial Code, the Bank Act and to regulatory limitations, generally based on capital levels and retained earnings, imposed by the various regulatory agencies with authority over those entities. The ability of Woori Financial Group’s subsidiaries to pay dividends may be subject to regulatory restrictions to the extent that paying dividends would impair each of their non-consolidated profitability, financial condition or other cash flow needs. For example:

Woori Financial Group’s subsidiaries may not continue to meet the applicable legal and regulatory requirements for the payment of dividends in the future. If they fail to do so, they may stop paying or reduce the amount of the dividends they pay to Woori Financial Group, which would have an adverse effect on its ability to pay dividends on its common stock.

Our directors and officers may have potential conflicts of interest in supporting the stock transfer.

Some of our directors and executive officers may have interests in the stock transfer that are different from, or in addition to, your interests.         members of our board of directors (including our president and chief executive officer) and     of our executive officers have been nominated to serve on Woori Financial Group’s board of directors, which will be initially comprised of         individuals. As of                                              , 2018, the latest date for which such information is currently available, our directors and executive officers, together with their respective affiliates, beneficially owned approximately     % of the outstanding shares of our common stock.

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The possibility of receiving compensation or other benefits in or following the stock transfer may have influenced these directors and officers in their support of the stock transfer. See “The Stock Transfer – Interests of Certain Directors and Executive Officers in the Stock Transfer.”

Risks Relating to Woori Financial Group Common Stock and American Depositary Shares

There has been no prior market for the common stock or American depositary shares of Woori Financial Group, and the stock transfer may not result in an active or liquid market for Woori Financial Group common stock or American depositary shares.

Woori Financial Group will be formed as a new entity in connection with the stock transfer. Accordingly, there will be no public market for Woori Financial Group’s common stock or American depositary shares prior to their issuance in connection with the stock transfer. We expect that Woori Financial Group will apply to list its common stock on the KRX KOSPI Market of the Korea Exchange and to list its American depositary shares on the New York Stock Exchange. However, we expect that such listings will not occur until some time after the stock transfer is completed. If you hold shares of Woori Financial Group common stock or Woori Financial Group American depositary shares, you may not be able to trade such shares until the relevant listing occurs. Furthermore, an active public market in Woori Financial Group common stock or American depositary shares may not develop or be sustained after their issuance. In addition, if a significant number of Woori Financial Group American depositary share holders withdraw the underlying shares of Woori Financial Group common stock from Woori Financial Group’s American depositary share facility and no additional Woori Financial Group American depositary shares are issued, the liquidity of Woori Financial Group American depositary shares would be adversely affected.

The initial market price of Woori Financial Group common stock and Woori Financial Group American depositary shares immediately after their issuance is expected to be determined, among other things, by the market prices of our common stock and American depositary shares prior to the stock transfer. The initial market price of Woori Financial Group common stock and Woori Financial Group American depositary shares may not be indicative of prices that will prevail in the trading market. You may not be able to resell your Woori Financial Group common stock or American depositary shares at or above the initial market price. Market prices of Korean companies’ stock have been and continue to be volatile. Volatility in the price of Woori Financial Group common stock and American depositary shares may be caused by factors outside of our control and may be unrelated or disproportionate to Woori Financial Group’s operating results.

Ownership of Woori Financial Group common stock is restricted under Korean law.

Under the Financial Holding Company Act, a single shareholder, together with its affiliates, is generally prohibited from owning more than 10% of the issued and outstanding shares of voting stock of a bank holding company such as Woori Financial Group that controls a nationwide bank, with the exception of certain shareholders that are non-financial business group companies, whose applicable limit is 4%. To the extent that the total number of shares of Woori Financial Group common stock (including those represented by American depositary shares) that you and your affiliates own together exceeds the applicable limits, you will not be entitled to exercise the voting rights for the excess shares, and the Financial Services Commission may order you to dispose of the excess shares within a period of up to six months. Failure to comply with such an order would result in a charge compelling performance of up to 0.03% of the book value of such shares per day until the date of disposal and an administrative fine of up to W100 million. See “Supervision and Regulation of Woori Financial Group—Principal Regulations Applicable to Financial Holding Companies—Restrictions on Ownership of a Financial Holding Company.”

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A holder of Woori Financial Group American depositary shares may not be able to exercise dissent and appraisal rights unless it has withdrawn the underlying shares of Woori Financial Group common stock and become its direct shareholder.

In some limited circumstances, including the transfer of the whole or any significant part of Woori Financial Group’s business and the merger or consolidation of Woori Financial Group with another company, dissenting shareholders will have the right to require Woori Financial Group to purchase their shares under Korean law. However, holders of Woori Financial Group American depositary shares will not be able to exercise such dissent and appraisal rights if the depositary refuses to do so on their behalf. The deposit agreement to be entered into between Woori Financial Group and Citibank, N.A., as depositary, will not require the depositary to take any action in respect of exercising dissent and appraisal rights. In such a situation, holders of Woori Financial Group American depositary shares must withdraw the underlying common stock from the American depositary share facility (and incur charges relating to such withdrawal) and become Woori Financial Group’s direct shareholders prior to the record date of the shareholders’ meeting at which the relevant transaction is to be approved, in order to exercise dissent and appraisal rights.

A holder of Woori Financial Group American depositary shares may be limited in its ability to deposit or withdraw common stock.

Under the terms of the deposit agreement to be entered into among us, Woori Financial Group and Citibank, N.A., as depositary, holders of Woori Financial Group common stock may deposit such stock with the depositary’s custodian in Korea and obtain Woori Financial Group American depositary shares, and holders of such American depositary shares may surrender American depositary shares to the depositary for cancellation and receive Woori Financial Group common stock. However, to the extent that a deposit of common stock exceeds any limit that Woori Financial Group may specify from time to time, such common stock will not be accepted for deposit unless the consent of Woori Financial Group with respect to such deposit has been obtained. Woori Financial Group is not expected to set any such limit; however Woori Financial Group has the right to do so at any time. Under the terms of the deposit agreement, no consent will be required for deposit if the shares of common stock are obtained through a dividend, free distribution, rights offering or reclassification of such stock. Woori Financial Group is expected to agree to consent, under the terms of the deposit agreement, to any deposit unless the deposit would be prohibited by applicable laws or violate Woori Financial Group’s articles of incorporation. If Woori Financial Group chooses to impose a limit on deposits in the future, however, Woori Financial Group may not consent to the deposit of any additional common stock. As a result, if a holder surrenders American depositary shares for cancellation and withdraws common stock, it may not be able to deposit the stock again to obtain American depositary shares.

A holder of Woori Financial Group common stock or American depositary shares will not have preemptive rights in some circumstances.

The Korean Commercial Code and Woori Financial Group’s articles of incorporation will require Woori Financial Group, with some exceptions, to offer shareholders the right to subscribe for new shares of Woori Financial Group common stock in proportion to their existing shareholding ratio whenever new shares are issued. If Woori Financial Group offers any rights to subscribe for additional shares of its common stock or any rights of any other nature, the depositary, after consultation with Woori Financial Group, may make the rights available to holders of Woori Financial Group American depositary shares or use reasonable efforts to dispose of the rights on behalf of such holders and make the net proceeds available to such holders. The depositary will make rights to purchase any additional shares of Woori Financial Group common stock available to holders of Woori Financial Group American depositary shares only if:

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Holders of Woori Financial Group common stock located in the United States may not exercise any such rights they receive absent registration or an exemption from the registration requirements under the Securities Act.

Woori Financial Group will not be under any obligation to file any registration statement with the SEC or to endeavor to cause such a registration statement to be declared effective. Moreover, Woori Financial Group may not be able to establish an exemption from registration under the Securities Act. Accordingly, a holder of Woori Financial Group American depositary shares may be unable to participate in rights offerings by Woori Financial Group and may experience dilution in its holdings. If a registration statement is required for a holder of Woori Financial Group American depositary shares to exercise preemptive rights but is not filed by Woori Financial Group or is not declared effective, the holder will not be able to exercise its preemptive rights for additional American depositary shares and it will suffer dilution of its equity interest in Woori Financial Group. If the depositary is unable to sell rights that are not exercised or not distributed or if the sale is not lawful or commercially feasible, it will allow the rights to lapse, in which case the holder will receive no value for these rights.

Dividend payments received by a holder on, and the amount a holder may realize upon a sale of, its Woori Financial Group American depositary shares will be affected by fluctuations in the exchange rate between the U.S. dollar and the Won.

We expect that the Woori Financial Group common stock will be listed on the KRX KOSPI Market and quoted and traded in Won. Cash dividends, if any, in respect of the shares represented by the Woori Financial Group American depositary shares will be paid to the depositary in Won and then converted by the depositary into U.S. dollars, subject to certain conditions. Accordingly, fluctuations in the exchange rate between the Won and the U.S. dollar will affect, among other things, the amounts a registered holder or beneficial owner of Woori Financial Group American depositary shares will receive from the depositary in respect of dividends, the U.S. dollar value of the proceeds which a holder or owner would receive upon sale in Korea of the shares of Woori Financial Group common stock obtained upon surrender of Woori Financial Group American depositary shares and the secondary market price of Woori Financial Group American depositary shares. Such fluctuations will also affect the U.S. dollar value of dividends and sales proceeds received by holders of Woori Financial Group common stock.

If the Korean government deems that emergency circumstances are likely to occur, it may restrict holders of Woori Financial Group common stock and the depositary from converting and remitting dividends and other amounts in U.S. dollars.

If the Korean government deems that certain emergency circumstances, including, but not limited to, severe and sudden changes in domestic or overseas economic circumstances, extreme difficulty in stabilizing the balance of payments or implementing currency, exchange rate and other macroeconomic policies, have occurred or are likely to occur, it may impose certain restrictions provided for under the Foreign Exchange Transaction Law, including the suspension of payments or requiring prior approval from governmental authorities for any transaction. See “Korean Foreign Exchange Controls and Securities Regulations—General.”

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A holder of Woori Financial Group common stock or American depositary shares may not be able to enforce a judgment of a foreign court against Woori Financial Group.

When established, Woori Financial Group will be a corporation with limited liability organized under the laws of Korea. We expect that substantially all of its directors and officers will reside in Korea, and all or a significant portion of the assets of such directors and officers and a substantial majority of Woori Financial Group’s assets will be located in Korea. As a result, it may not be possible for holders of Woori Financial Group common stock or American depositary shares to effect service of process within the United States, or to enforce in the United States against Woori Financial Group or its directors and officers judgments obtained in United States courts based on the civil liability provisions of the federal securities laws of the United States. There may be doubt as to the enforceability in Korea, either in original actions or in actions for enforcement of judgments of U.S. courts, of civil liabilities predicated on the U.S. federal securities laws.

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FORWARD-LOOKING INFORMATION

The SEC encourages companies to disclose forward-looking information so that investors can better understand a company’s future prospects and make informed investment decisions. This prospectus contains forward-looking statements, which may include statements regarding the period following completion of the stock transfer.

Words and phrases such as “aim,” “anticipate,” “assume,” “believe,” “contemplate,” “continue,” “estimate,” “expect,” “future,” “goal,” “intend,” “may,” “objective,” “plan,” “positioned,” “predict,” “project,” “risk,” “seek to,” “shall,” “should,” “will likely result,” “will pursue” and words and terms of similar substance used in connection with any discussion of the proposed stock transfer or our future operating or financial performance identify forward-looking statements. All forward-looking statements are our management’s present expectations of future events and are subject to a number of factors and uncertainties that could cause actual results to differ materially from those described in the forward-looking statements. In addition to the risks related to our business, the factors relating to the stock transfer discussed under “Risk Factors” and the risks related to the business of Woori Financial Group, once it is formed and becomes operational, among others, could cause actual results to differ materially from those described in the forward-looking statements. These factors include, but are not limited to, failure to realize the anticipated benefits of the stock transfer and adverse regulatory developments. We caution you not to place undue reliance on the forward-looking statements, which speak only as of the date they are made. Except as required by law, we are not under any obligation, and expressly disclaim any obligation, to update or alter any forward-looking statements, whether as a result of new information, future events or otherwise.

All subsequent forward-looking statements attributable to us or any person acting on our behalf are expressly qualified in their entirety by the cautionary statements contained or referred to in this section.

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THE EXTRAORDINARY GENERAL MEETING OF SHAREHOLDERS

Time, Place and Purpose

The extraordinary general meeting of our shareholders is scheduled to be held on the fifth floor of the Woori Bank Head Office Building, 51, Sogong-ro, Jung-gu, Seoul, Korea on                                              , 2018 at         a.m. local time. The extraordinary general meeting is being held so that the holders of our common stock can consider and vote upon a special resolution approving the stock transfer, whereby holders of our common stock will transfer all of their shares to a new financial holding company, Woori Financial Group, and in return receive shares of Woori Financial Group common stock.

Specifically, holders of our common stock will be asked to vote on a special resolution approving the stock transfer plan (including the proposed articles of incorporation of Woori Financial Group and the nominees for directors of Woori Financial Group, including those who will serve as members of the Audit Committee of the board of directors).

An English translation of the stock transfer plan, which includes the proposed articles of incorporation of Woori Financial Group and the list of our nominees for the directors of Woori Financial Group (including those who will also serve as members of the Audit Committee of the board of directors), is attached to this prospectus as Annex I. For information regarding such nominees, see “Management of Woori Financial Group.”

Voting Rights, Record Date and Votes Required

Holders of common stock recorded on our shareholder register as of the applicable record date will be entitled to attend and vote, either in person or by proxy, at the extraordinary general meeting. Our board of directors has fixed the close of business on                                              , 2018 as the record date for the determination of the holders of our common stock entitled to notice of and to vote at the extraordinary general meeting. Each share of common stock present or represented at the meeting will be entitled to one vote.

The adoption of a special resolution at the extraordinary general meeting requires the affirmative vote of at least two-thirds of the shares of our common stock present or represented at the meeting. The shares voting affirmatively must also represent at least one-third of the total issued and outstanding shares of our common stock.

Holders of our common stock who are non-financial business group companies and hold an aggregate number of shares representing in excess of 4% of our total issued and outstanding common stock will not be allowed to vote the shares representing such excess.

Share Ownership of Directors and Executive Officers

As of                                              , 2018, the latest date for which such information is currently available, our directors and executive officers and their affiliates owned, in the aggregate,                shares of our common stock, which is approximately         % of the shares of our common stock outstanding on that date. To our knowledge, our directors and executive officers intend to vote “FOR” approval of the stock transfer.

Voting by Proxy

Holders of our common stock may vote either in person at the extraordinary general meeting or by proxy. Shareholders who wish to vote their shares of common stock by proxy can do so through one of the following methods:

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Although there is no guarantee, if the Korea Securities Depository receives a completed voting instruction form from a shareholder through its standing proxy on or prior to                                             , 2018, the Korea Securities Depository will try to vote the shareholder’s shares in accordance with the instructions of the shareholder, as far as practical and subject to the requirements of Korean law. Shareholders will be able to change their vote after they send in their voting instruction forms to the Korea Securities Depository, by attending the meeting and voting their shares in person or, if available, by requesting their respective standing proxies to attend the meeting and vote the shares by proxy as described below.

A shareholder may revoke a power of attorney after it is delivered and provide a different power of attorney to its standing proxy at any time prior to the extraordinary general meeting. A shareholder may also revoke any power of attorney and attend and vote directly at the extraordinary general meeting.

If you have further questions regarding your voting rights, you should contact your standing proxy in Korea, or us at:

Woori Bank

Investor Relations Department

51, Sogong-ro, Jung-gu

Seoul 04632, Korea

Telephone: +82-2-2125-2337

Facsimile: +82-505-003-2512

e-mail: woori.ir@wooribank.com

Voting Rights of Holders of Our American Depositary Shares

Holders of our American depositary shares recorded on the applicable register of Citibank, N.A., as depositary, as of the record date will be entitled to instruct the depositary as to how to vote the shares of our common stock represented by such holders’ American depositary shares at the extraordinary general meeting. Citibank, N.A. will mail a voting instruction card to holders of record of our American depositary shares as

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of                                         , 2018. Voting instructions may be delivered to the depositary by completing, signing and delivering a voting instruction card to the depositary prior to the applicable cut-off date. For a holder’s voting instructions to be valid, the depositary must receive the voting instruction card by no later than 10:00 a.m. (New York Time) on                                         , 2018. Although there is no guarantee, the depositary will try to vote the shares of common stock represented by a holder’s American depositary shares in accordance with the instructions of the holder, as far as practical and subject to the requirements of Korean law. Holders of our American depositary shares will be able to change their voting instructions after they send their voting instruction card with revised voting instructions to the depositary. However, such revised voting instructions will not be valid unless the depositary receives the new voting instruction card by 10:00 a.m. (New York Time) on                                             , 2018.

In accordance with the terms of the deposit agreement for the American depositary shares, Citibank N.A. will, to the extent it does not receive timely voting instructions from any holders of our American depositary shares, vote the shares represented by such unvoted American depositary shares in the same manner and in the same proportion on each matter as the holders of all of the outstanding shares of our common stock present or represented at the extraordinary general meeting are voting on that matter.

Holders of our American depositary shares who hold an aggregate number of shares representing in excess of 4% of our total issued and outstanding common stock will not be allowed to vote the shares representing such excess.

If you are a holder of our American depositary shares and have further questions as to how to exercise your voting rights, you should contact the depositary at:

Citibank, N.A.

Shareholder Services

P.O. Box 43077

Providence, RI 02940-3077

Telephone: 1-877-248-4237

e-mail: citibank@shareholders-online.com

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THE STOCK TRANSFER

Background of the Stock Transfer

Our management has determined that it would be beneficial for us to reorganize our operations and those of certain of our subsidiaries under a financial holding company structure. We expect that the establishment of a new financial holding company will help lead to an efficient management structure that can effectively respond to external changes (such as changes in regulations and the earlier conversion of our competitor banks to financial holding company structures), a higher enterprise value achieved through enhanced profitability from the maximization of synergies among affiliated companies, and sustainable growth from the strengthening of customer convenience and other competitive factors.

Accordingly, on June 19, 2018, our board of directors approved a plan for a “comprehensive stock transfer” under Article 360-15 of the Korean Commercial Code, whereby holders of our common stock will transfer all of their shares to Woori Financial Group, a new financial holding company for our bank, and in return receive Woori Financial Group common stock. On                    , 2018, our board of directors resolved to further supplement the stock transfer plan, including with the list of persons to be nominated to serve as directors of Woori Financial Group.

Reasons for the Stock Transfer

The purpose of the stock transfer is to reorganize the different businesses of our bank (including certain of our subsidiaries) under a financial holding company structure whereby the financial holding company would become the parent company of our bank and certain of our subsidiaries.

We believe that the adoption of a financial holding company structure will help us increase customer satisfaction, generate synergies and maximize profitability, by creating an integrated system among our affiliated companies and allowing us to effectively provide various financial services, including comprehensive one-stop asset management services customized for clients, based on active expansion of non-banking and global business operations.

Once the stock transfer is completed, we and certain of our subsidiaries will become wholly-owned subsidiaries of a new financial holding company, Woori Financial Group.

Our organizational structure as of March 31, 2018 is illustrated by the following chart:

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Woori Financial Group’s organizational structure after giving effect to the stock transfer is illustrated by the following chart:

We may decide to make further changes to our organizational structure after completion of the stock transfer as we seek to maximize management efficiency under the new financial holding company structure. For example, subsequent to the establishment of Woori Financial Group, we plan to review the conversion of certain of our remaining subsidiaries such as Woori Card Co., Ltd. and Woori Investment Bank Co., Ltd. as direct subsidiaries of Woori Financial Group. In addition, new companies may be added as subsidiaries of Woori Financial Group as strategically necessary through new establishments or acquisitions.

Exchange of Woori Bank Common Stock and American Depositary Shares for Woori Financial Group Common Stock and American Depositary Shares

In connection with the stock transfer, holders of our common stock will transfer all of their shares of our common stock to the new financial holding company, Woori Financial Group, which will be established simultaneously with such transfer. As consideration for the shares of our common stock, Woori Financial Group will issue shares of its common stock to the holders of our common stock. In the stock transfer, each holder of one share of our common stock will receive one share of Woori Financial Group common stock. Holders of our American depositary shares, each of which represents three shares of our common stock, will receive one Woori Financial Group American depositary share for every American depositary share they own.

Prior to the date when the stock transfer becomes effective, the holders of our common stock must surrender their shares of our common stock to us, in our capacity as the transfer agent for the stock transfer, in the case of holders of shares of our common stock in certificated form. Any such common stock share certificates not surrendered will become invalid following the stock transfer. In the case of shares of our common stock deposited with the Korea Securities Depository and held by our shareholders in book-entry form, the Korea Securities Depository will cancel our deposit eligibility once the stock transfer is completed and cancel the share certificates for such shares, and no action regarding a surrender will be required by the holders of such shares. We expect that our common stock will be suspended from trading on the KRX KOSPI Market of the Korea Exchange starting from such date as designated by the Korea Exchange, which must be prior to the end of the period during which the shares of our common stock must be surrendered and/or cancelled. On the effective date of the stock transfer, the newly issued shares of Woori Financial Group common stock will be deposited with the Korea Securities Depository, which will be the clearing agency for such stock, and the Korea Securities

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Depository will register the newly issued shares of Woori Financial Group common stock in book-entry form in the names of the holders of our common stock of record as of the effective date of the stock transfer as consideration for the shares of our common stock previously surrendered or cancelled.

When the Woori Financial Group common stock issued in respect of our common stock underlying our American depositary shares is credited to the account of Citibank, N.A., as depositary, at the Korea Securities Depository, the Korea Securities Depository will notify Citibank, N.A. of such deposit. The Deposit Agreement, under which our American depositary shares are issued, will be amended and restated as the Second Amended and Restated Deposit Agreement, effective as of the effective date of the stock transfer. We describe such deposit agreement under “Description of Woori Financial Group’s American Depositary Shares.” Citibank, N.A. will then exchange our American depositary shares for Woori Financial Group American depositary shares.

To receive Woori Financial Group American depositary shares upon the effectiveness of the stock transfer, you do not need to take any action. Citibank, N.A. will mail a notice to registered holders of our American depositary shares informing them of the exchange of their American depositary shares for Woori Financial Group American depositary shares as well as a statement detailing the number of Woori Financial Group American depositary shares registered in their name. The Woori Financial Group American depositary shares will be issued as “uncertificated” American depositary shares, which are American depositary shares not evidenced by American depositary receipts.

Holders of our American depositary shares who hold the American depositary shares through The Depository Trust Company, or DTC, do not need to take any action in order to exchange their American depositary shares for Woori Financial Group American depositary shares. DTC, which is the clearing agency for our American depositary shares, will surrender our outstanding American depositary shares to Citibank, N.A. In exchange, Citibank, N.A. will deliver Woori Financial Group American depositary shares to DTC, which will credit the newly issued Woori Financial Group American depositary shares to the accounts of its participants to which our American depositary shares are credited as of the close of business on the day prior to the effective date of the stock transfer.

Citibank, N.A., as depositary for the American depositary shares, may and intends to charge depositary fees for the cancellation of our American depositary shares (up to U.S.$0.05 per American depositary share cancelled) and for the issuance of Woori Financial Group American depositary shares (up to U.S.$0.05 per American depositary share issued) to the holders of our American depositary shares (as of the close of business on the day prior to the effective date of the stock transfer), unless Citibank, N.A., Woori Bank and Woori Financial Group agree to waive the payment of all or a portion of such fees by the holders of American depositary shares. Any depositary fees payable by holders of American depositary shares will be charged by the DTC participants to the accounts of the beneficial owners of our American depositary shares (as of the close of business on the day prior to the effective date of the stock transfer), and will be remitted to Citibank, N.A., as depositary for the American depositary shares, by DTC and its participants on behalf of the beneficial owners.

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Exchange of Common Stock of Woori Bank’s Subsidiaries for Woori Financial Group Common Stock

In connection with the stock transfer, we will transfer all shares of common stock held by us of Woori FIS, Woori Finance Research Institute, Woori Credit Information, Woori Fund Services, Woori Private Equity Asset Management, all of which are our subsidiaries, to Woori Financial Group. As a result of the transfer, Woori Financial Group will own 100% of the outstanding common stock of all such subsidiaries participating in the stock transfer. As consideration for the shares of such subsidiaries’ common stock, Woori Financial Group will issue shares of its common stock to us. In the stock transfer, we will receive, for each share of common stock of the following subsidiaries, which will become wholly-owned subsidiaries of Woori Financial Group, such number of shares of Woori Financial Group common stock as set forth below as the applicable stock transfer ratio:

Each of the aforementioned stock transfer ratios may be changed only with the approval of our board of directors and those of all of the above subsidiaries, if (i) the capital structure of an entity is changed due to certain events, such as the issuance of new shares of capital stock, or (ii) certain events occur which would make it reasonable to change the ratio.

Interests of Certain Directors and Executive Officers in the Stock Transfer

You should be aware that a number of our directors and officers may have agreements or arrangements that provide them with interests in the stock transfer that differ from those of our shareholders. Our board of directors was aware of these interests during its deliberations of the merits of the stock transfer.

Governance Structure and Management Positions. Pursuant to the terms of the stock transfer, upon completion of the stock transfer and the formation of Woori Financial Group, the board of directors of Woori Financial Group will be initially comprised of        individuals.            members of our board of directors (including our president and chief executive officer) and        of our executive officers have been nominated to serve on Woori Financial Group’s board of directors. See “Management of Woori Financial Group.”

Stock Ownership. As of                                        , 2018, the latest date for which such information is currently available, our directors and executive officers, together with their respective affiliates, beneficially owned            shares representing approximately        % of the outstanding shares of our common stock.

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Conditions to the Completion of the Stock Transfer

Under the stock transfer plan, the completion of the stock transfer is subject to the following:

Under Korean law, our shareholders who oppose the stock transfer may exercise appraisal rights and require us to purchase their shares if the stock transfer is completed. See “—Dissent and Appraisal Rights.”

Completion and Effectiveness of the Stock Transfer

We will complete the stock transfer when all the conditions to completion of the stock transfer are satisfied, including the approval of the stock transfer by our shareholders and the relevant Korean regulatory authorities, and the absence of any suspension of the stock transfer by us as a result of the exercise of appraisal rights in respect of more than 15% of the total issued shares of our common stock. See “—Conditions to the Completion of the Stock Transfer.” The stock transfer will become effective when we register the incorporation of Woori Financial Group with the commercial registry office of the Seoul Central District Court, pursuant to the applicable requirements of Korean law. We expect to complete the stock transfer in the first quarter of 2019.

U.S. Income Tax Consequences of the Stock Transfer

The exchange of Woori Bank common stock or American depositary shares for corresponding interests in Woori Financial Group will not be a taxable transaction for U.S. tax purposes. In general, U.S. holders will not recognize gain or loss for U.S. tax purposes when they exchange our common stock or American depositary shares for Woori Financial Group common stock or American depositary shares pursuant to the stock transfer. A U.S. holder’s tax basis in Woori Financial Group common stock or American depositary shares received in the stock transfer will equal the U.S. holder’s tax basis in our common stock or American depositary shares exchanged, and a U.S. holder’s holding period in Woori Financial Group common stock or American depositary shares received will include the holder’s holding period in our common stock or American depositary shares exchanged. If you exercise your appraisal rights for your shares of our common stock and we purchase such shares for cash, the transaction will be treated for U.S. tax purposes as a taxable sale of your shares. See “Tax Considerations—United States Taxation.”

Accounting Treatment of the Stock Transfer

The stock transfer transaction involving our shareholders is a transaction among entities under common control, for which there is no specifically applicable accounting standard under IFRS. In the absence of an IFRS accounting standard that specifically applies to a transaction, the management of the relevant company must use its judgment in developing and applying an accounting policy in accordance with paragraphs 10 and 11 of International Accounting Standard 8, Accounting Policies, Changes in Accounting Estimates and Errors. In making such judgment, the management of the company may consider similar accounting standards and accepted industry practices, and accordingly, we expect that the stock transfer transaction will be accounted for as a transaction among entities under common control applying the pooling of interests method of accounting. Upon the completion of the stock transfer, Woori Financial Group will initially recognize the transferred assets and liabilities at their book value as of the date of the stock transfer in its consolidated financial statements, and no goodwill will be recognized in connection with the transaction.

Regulatory Matters

We have summarized below the material regulatory requirements affecting the stock transfer and the establishment of Woori Financial Group as a new financial holding company. Although we have not yet received

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all of the required approvals we discuss, we anticipate that we will receive them in time to complete the stock transfer in January 2019.

Establishment of a Financial Holding Company

Under the Financial Holding Company Act, we are required to obtain an approval from the Financial Services Commission for the establishment of a financial holding company in connection with the stock transfer. We submitted an application to the Financial Services Commission on July 20, 2018 for approval of the establishment of a financial holding company.

Stock Transfer Report

Under the Financial Investment Services and Capital Markets Act and related regulations, we are required to submit a stock transfer report to the Financial Services Commission and the Korea Exchange immediately upon any resolution by our board of directors to undertake a comprehensive stock transfer. We submitted the stock transfer report to the Financial Services Commission and the Korea Exchange on June 19, 2018, the date of the relevant resolution by our board of directors.

Stock Exchange Listings

We expect to apply to list the Woori Financial Group common stock on the KRX KOSPI Market of the Korea Exchange and to list the Woori Financial Group American depositary shares on the New York Stock Exchange. We expect that trading of our common stock on the KRX KOSPI Market of the Korea Exchange will be suspended commencing from approximately        days prior to the date of the stock transfer, and that the listing of the Woori Financial Group common stock on the KRX KOSPI Market of the Korea Exchange will not occur until approximately        days after the stock transfer is completed. Shareholders will not be able to trade their shares of Woori Financial Group common stock until such listing occurs. We also expect that the listing of the Woori Financial Group American depositary shares on the New York Stock Exchange will not occur until approximately        days after the stock transfer is completed. Holders of such American depositary shares may not be able to trade their American depositary shares until such listing occurs.

Dissent and Appraisal Rights

Holders of our common stock who oppose the stock transfer will be entitled to appraisal rights under Korean law. Appraisal rights may be exercised with respect to all or a portion of the shares of our common stock owned by a shareholder as of                                        , 2018, the record date for the extraordinary general meeting of shareholders. However, holders of our American depositary shares will not have any appraisal rights in respect of the stock transfer, since they are not holders of record of the underlying shares of our common stock.

Under the Korean Commercial Code, the Financial Investment Services and Capital Markets Act and the Financial Holding Company Act, in order to exercise the appraisal rights, a holder of our common stock must:

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If the stock transfer is approved at the extraordinary general meeting, we will purchase the shares of each dissenting shareholder who has properly submitted a purchase request, within one month from the 10th day after the extraordinary general meeting. Shareholders wishing to exercise their appraisal rights must hold their shares until we purchase such shares within such one-month period. In the event that the number of shares of our common stock for which appraisal rights are exercised exceeds 15% of the total issued shares of our common stock, we may not complete the stock transfer, in which case we will not purchase any shares of dissenting shareholders. See “—Conditions to the Completion of the Stock Transfer.”

Under Korean law, the purchase price for shares in respect of which appraisal rights have been exercised is to be determined through negotiation between the dissenting shareholders and us. However, if the dissenting shareholders and we fail to agree on a purchase price, Korean law provides that the purchase price will be calculated as the arithmetic average of the weighted average closing share prices of our common stock for (1) the two-month period, (2) the one-month period and (3) the one-week period ending immediately prior to June 19, 2018, the date our board of directors approved the stock transfer. The appraisal price to be paid by us was calculated as follows using the formula described above:

Under Korean law, if we or our shareholders owning 30% or more of the shares of our common stock in respect of which appraisal rights have been exercised do not accept the appraisal price calculated as set forth above, we or such shareholders may contest such appraisal price by submitting a request to adjust the price to Financial Services Commission within one month from the date of the extraordinary general meeting.

Notwithstanding the final appraisal price determined by the Financial Services Commission, dissenting shareholders may have the right to contest such final appraisal price in court.

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If you wish to find out more information about how to exercise your appraisal rights, you should contact your standing proxy in Korea, or us at the following address:

Woori Bank

Investor Relations Department

51, Sogong-ro, Jung-gu

Seoul 04632, Korea

Telephone: +82-2-2125-2337

Facsimile: +82-505-003-2512

e-mail: woori.ir@wooribank.com

The Stock Transfer Plan

We believe that the foregoing summary describes all material terms of the stock transfer plan. However, because the stock transfer plan is the primary legal document that governs the stock transfer, we urge you to read the full version of the stock transfer plan, which is attached as Annex I to this prospectus.

Articles of Incorporation of Woori Financial Group

The proposed articles of incorporation of Woori Financial Group, which are included as part of the stock transfer plan attached as Annex I to this prospectus, were prepared by us and are expected to be adopted at the time of the establishment of Woori Financial Group. For a summary of the material provisions of the proposed articles of incorporation of Woori Financial Group and the rights of shareholders of Woori Financial Group under the proposed articles of incorporation, see “Description of Woori Financial Group’s Capital Stock.”

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INFORMATION ABOUT WOORI BANK

For information about us, including an overview of our business, organizational structure and property and a review of our operations and financial results, see our Annual Report on Form 20-F for the year ended December 31, 2017, which is incorporated by reference into this prospectus, as supplemented by the following. The following supplements certain information about us appearing under the headings corresponding to the headings below in our Annual Report on Form 20-F for the year ended December 31, 2017. If the information below differs from the information in our Annual Report on Form 20-F for the year ended December 31, 2017, you should rely on the information below.

Item 3. KEY INFORMATION

Item 3.A. Selected Financial Data

The selected consolidated financial and operating data set forth below have been derived from our unaudited consolidated interim financial statements as of June 30, 2018 and for the six-month periods ended June 30, 2017 and 2018, which have been prepared in accordance with IFRS as issued by the IASB.

IFRS 9 Financial Instruments, or IFRS 9, is effective for annual periods beginning on or after January 1, 2018 and replaces International Accounting Standard 39 Financial Instruments: Recognition and Measurement, or IAS 39. We have applied IFRS 9 in our unaudited consolidated interim financial statements as of and for the six-month period ended June 30, 2018 included elsewhere in this prospectus. As permitted by the transition rules of IFRS 9, our comparative unaudited consolidated interim financial statements as of December 31, 2017 and for the six-month period ended June 30, 2017 included elsewhere in this prospectus have not been restated to retroactively apply IFRS 9. For information regarding the impact of the application of IFRS 9 to our consolidated financial statements, see “Item 5.A. Operating Results—Changes in Accounting Standards” below and Note 2-(1)-a) of the notes to our unaudited consolidated interim financial statements included elsewhere in this prospectus.

You should read the following data together with the more detailed information contained in “Item 5. Operating and Financial Review and Prospects” below and our unaudited consolidated interim financial statements included elsewhere in this prospectus. Our results of operations for the six-month period ended June 30, 2018 are not necessarily indicative of our results of operations for the full year 2018.

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Consolidated Statement of Comprehensive Income Data

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Consolidated Statement of Financial Position Data

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Profitability Ratios and Other Data

The following table shows how total revenue is calculated:

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The following table shows how operating expense is calculated:

Asset Quality Data

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Selected Financial Information

Average Balances and Related Interest

The following tables show our average balances and interest rates for the six-month periods ended June 30, 2017 and 2018:

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Analysis of Changes in Net Interest Income—Volume and Rate Analysis

The following table provides an analysis of changes in interest income, interest expense and net interest income based on changes in volume and changes in rates, for the six-month period ended June 30, 2018 compared to the six-month period ended June 30, 2017. Information is provided with respect to: (1) effects attributable to changes in volume (changes in volume multiplied by prior rate) and (2) effects attributable to changes in rate (changes in rate multiplied by prior volume). Changes attributable to the combined impact of changes in rate and volume have been allocated proportionately to the changes due to volume changes and changes due to rate changes.