Filed Pursuant to Rule 424(b)(2)
Registration No. 333-209657

CALCULATION OF REGISTRATION FEE

PROSPECTUS SUPPLEMENT

(To Prospectus Dated February 23, 2016)    

Regions Financial Corporation

$500,000,000 3.800% Senior Notes due 2023

We are offering by this prospectus supplement $500,000,000 principal amount of our 3.800% Senior Notes due 2023 (the “Notes”). The Notes have identical terms as, and are part of a single series of our senior debt securities with, the $500,000,000 principal amount of 3.800% Senior Notes due 2023 issued on August 13, 2018 (the “Original Notes”). We will pay interest on the Notes at an annual rate equal to 3.800% and will pay such interest on February 14 and August 14 of each year beginning on February 14, 2019.

The Notes may not be redeemed by us prior to July 28, 2019. The Original Notes were redeemable at our option beginning February 14, 2019. In connection with the issuance of the Notes, we are surrendering our right to redeem the Original Notes and the Notes prior to July 28, 2019. We may redeem the Notes, in whole or in part, at any time and from time to time on or after July 28, 2019 and prior to July 14, 2023, at the applicable redemption prices set forth herein under “Description of the Notes—Redemption.” At any time or from time to time on or after July 14, 2023, we may redeem the Notes in whole or in part by paying the aggregate principal amount of the Notes to be redeemed plus accrued and unpaid interest thereon, if any, to, but excluding, the redemption date. The Notes will not be subject to repayment at the option of the holder at any time prior to maturity and will not be entitled to any sinking fund.

The Notes will be senior unsecured obligations of Regions Financial Corporation and will rank equally among themselves and with all of our other unsecured and unsubordinated indebtedness, including the Original Notes. The Notes will not be guaranteed by any of our subsidiaries.

The Notes will be issued only in registered book-entry form, in minimum denominations of $2,000 and integral multiples of $1,000 in excess thereof.

The Notes will not be listed on any securities exchange. Currently there is no public market for the Notes.

Investing in the Notes involves risks. See “Risk Factors” beginning on page S-5 of this prospectus supplement to read about factors you should consider before investing in the Notes.

Neither the Securities and Exchange Commission, any state securities commission, the Federal Deposit Insurance Corporation, the Board of Governors of the Federal Reserve System nor any other regulatory body has approved or disapproved of these securities or determined if this prospectus supplement or the accompanying prospectus is accurate or complete. Any representation to the contrary is a criminal offense.

The Notes are not savings accounts, deposits or other obligations of a bank and are not insured by the Federal Deposit Insurance Corporation or any other governmental agency or instrumentality.

The underwriters expect to deliver the Notes in book-entry form only through the facilities of The Depository Trust Company for the accounts of its participants, including Clearstream Banking, société anonyme, and Euroclear Bank S.A./N.V., against payment in New York, New York on or about January 28, 2019.

Our affiliates may use this prospectus supplement and the accompanying prospectus in connection with offers and sales of the Notes in the secondary market. These affiliates may act as principal or agent in those transactions. Secondary market sales will be made at prices related to market prices at the time of sale.

Joint Book-Running Managers

Co-Managers

Prospectus Supplement dated January 23, 2019

TABLE OF CONTENTS

Prospectus Supplement

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ABOUT THIS PROSPECTUS SUPPLEMENT

This document consists of two parts. The first part is the prospectus supplement, which describes the specific terms of this offering. The second part is the prospectus, which describes more general information, some of which may not apply to this offering. You should read both this prospectus supplement and the accompanying prospectus, together with additional information described below under the heading “Where You Can Find More Information.”

Unless otherwise mentioned or unless the context requires otherwise, all references in this prospectus supplement to “we,” “us,” “our” or similar references mean Regions Financial Corporation and not its subsidiaries and references to “Regions” mean Regions Financial Corporation and its subsidiaries.

If the information set forth in this prospectus supplement differs in any way from the information set forth in the accompanying prospectus, you should rely on the information set forth in this prospectus supplement.

We and the underwriters have not authorized anyone to provide you with any information other than that contained in this prospectus supplement, the accompanying prospectus, and any related free writing prospectus prepared by us or on our behalf. When you make a decision about whether to invest in the Notes, you should not rely upon any information other than the information in this prospectus supplement, the accompanying prospectus, any related free writing prospectus prepared by us or on our behalf and the documents incorporated by reference. We and the underwriters take no responsibility for, and can provide no assurances as to the reliability of, any other information that others may give you. You should assume that information contained in this prospectus supplement, the accompanying prospectus, any related free writing prospectus prepared by us or on our behalf and the documents incorporated by reference herein is accurate only as of their respective dates. Our business, financial condition, results of operations and prospects may have changed since those dates. This prospectus supplement and the accompanying prospectus are not an offer to sell or solicitation of an offer to buy Notes in any circumstances under which the offer or solicitation is unlawful.

NOTICE TO PROSPECTIVE INVESTORS IN THE UNITED KINGDOM—This prospectus supplement and the accompanying prospectus are only being distributed to, and are only directed at, (i) persons who are outside the United Kingdom or (ii) to investment professionals falling within Article 19(5) of the Financial Services and Markets Act 2000 (Financial Promotion) Order 2005 (as amended, the “Order”), or (iii) high net worth entities falling within Article 49(2)(a) to (d) of the Order (each such person being referred to as a “relevant person”). This prospectus supplement and the accompanying prospectus and their contents should not be distributed, published or reproduced (in whole or in part) or disclosed by recipients to any other persons in the United Kingdom. The Notes are only available to, and any invitation, offer or agreement to subscribe, purchase or otherwise acquire such Notes will be engaged in only with, relevant persons. Any person in the United Kingdom that is not a relevant person should not act or rely on this prospectus supplement and/or the accompanying prospectus or any of their contents.

This prospectus supplement and the accompanying prospectus have not been approved for the purposes of Section 21 of the UK Financial Services and Markets Act 2000 (as amended, “FSMA”) by a person authorized under FSMA. This prospectus supplement and the accompanying prospectus are being distributed and communicated to persons in the United Kingdom only in circumstances in which Section 21(1) of FSMA does not apply to us.

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The Notes are not being offered or sold to any person in the United Kingdom except in circumstances which will not result in an offer of securities to the public in the United Kingdom within the meaning of Part VI of FSMA.

PRIIPs REGULATION/ PROSPECTUS DIRECTIVE/ PROHIBITION OF SALES TO EEA RETAIL INVESTORS—The Notes are not intended to be offered, sold or otherwise made available to and should not be offered, sold or otherwise made available to any retail investor in the European Economic Area (“EEA”). For these purposes, a retail investor means a person who is one (or more) of: (i) a retail client as defined in point (11) of Article 4(1) of Directive 2014/65/EU (as amended, “MiFID II”); or (ii) a customer within the meaning of Directive 2002/92/EC (as amended or superseded, the “Insurance Mediation Directive”), where that customer would not qualify as a professional client as defined in point (10) of Article 4(1) of MiFID II; or (iii) not a qualified investor as defined in Directive 2003/71/EC (as amended or superseded, the “Prospectus Directive”). Consequently no key information document required by Regulation (EU) No 1286/2014 (as amended, the “PRIIPs Regulation”) for offering or selling the Notes or otherwise making them available to retail investors in the EEA has been prepared and therefore offering or selling the Notes or otherwise making them available to any retail investor in the EEA may be unlawful under the PRIIPs Regulation.

WHERE YOU CAN FIND MORE INFORMATION

We file annual, quarterly and current reports, proxy statements and other information with the Securities and Exchange Commission (the “SEC”). Our SEC filings are available to the public over the Internet at the SEC’s web site at www.sec.gov and on the investor relations page of our website at www.regions.com. Our SEC filings are also available at the offices of the New York Stock Exchange (“NYSE”). For further information on obtaining copies of our public filings at the NYSE, you should call 212-656-3000.

The SEC allows us to “incorporate by reference” into this prospectus supplement the information we file with it, which means that we can disclose important information to you by referring you to those documents. The information incorporated by reference is an important part of this prospectus supplement and information that we subsequently file with the SEC will automatically update and supersede the information in this prospectus supplement and in our other filings with the SEC. We incorporate by reference the documents listed below, which we have already filed with the SEC, and any future filings we make with the SEC under Section 13(a), 13(c), 14 or 15(d) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), until we sell all the Notes offered by this prospectus supplement (in each case, other than information that is deemed, under SEC rules, not to have been filed.):

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You may request a copy of these filings (other than an exhibit to a filing unless that exhibit is specifically incorporated by reference into that filing) at no cost, by writing or calling us at the following address:

Regions Financial Corporation

Investor Relations

1900 Fifth Avenue North

Birmingham, Alabama 35203

Telephone: (205) 264-7040

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SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

The information included or incorporated by reference in this prospectus supplement and the accompanying prospectus may include forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995. The words “future,” “anticipates,” “assumes,” “intends,” “plans,” “seeks,” “believes,” “predicts,” “potential,” “objectives,” “estimates,” “expects,” “targets,” “projects,” “outlook,” “forecast,” “would,” “will,” “may,” “might,” “could,” “should,” “can” and similar terms and expressions often signify forward-looking statements. Forward-looking statements are not based on historical information, but rather are related to future operations, strategies, financial results or other developments. Forward-looking statements are based on management’s current expectations as well as certain assumptions and estimates made by, and information available to, management at the time the statements are made. Those statements are based on general assumptions and are subject to various risks, and because they also relate to the future they are likewise subject to inherent uncertainties and other factors that may cause actual results to differ materially from the views, beliefs and projections expressed in such statements. Therefore, we caution you against relying on any of these forward-looking statements. These risks, uncertainties and other factors include, but are not limited to, those described below:

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You should not place undue reliance on any forward-looking statements, which speak only as of the date made. Factors or events that could cause Regions’ actual results to differ may emerge from time to time, and it is not possible to predict all of them. Regions assumes no obligation to update or revise any forward-looking statements that are made from time to time, either as a result of future developments, new information or otherwise, except as may be required by law.

The foregoing list of factors is not exhaustive. For discussion of these and other factors that may cause actual results to differ from expectations, look under the captions “Forward-Looking Statements” in Regions’ Annual Report on Form 10-K for the year ended December 31, 2017 and Quarterly Reports on Form 10-Q for the quarters ended March 31, 2018, June 30, 2018, and September 30, 2018, each as filed with the SEC, and “Risk Factors” in Regions’ Annual Report on Form 10-K for the year ended December 31, 2017, as filed with the SEC.

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RISK FACTORS

An investment in our Notes involves certain risks. You should carefully consider the risks described below and the risk factors included in our Annual Report on Form 10-K for the year ended December 31, 2017, as well as the other information included or incorporated by reference in this prospectus supplement and the accompanying prospectus, before making an investment decision. Our business, financial condition or results of operations could be materially adversely affected by any of these risks. This prospectus supplement also contains forward-looking statements that involve risks and uncertainties. Our actual results could differ materially from those anticipated in any forward-looking statements as a result of certain factors, including the risks faced by us described below and elsewhere in this prospectus supplement and the accompanying prospectus.

The Notes are our obligations and not obligations of our subsidiaries and will be structurally subordinated to the claims of our subsidiaries’ creditors.

The Notes are exclusively our obligations and not those of our subsidiaries. We are a holding company that conducts substantially all of our operations through our bank and non-bank subsidiaries. As a result, our ability to make payments on the Notes will depend primarily upon the receipt of dividends and other distributions from our subsidiaries. If we do not receive sufficient cash dividends and other distributions from our subsidiaries, it is unlikely that we will have sufficient funds to make payments on the Notes.

Our subsidiaries are separate and distinct legal entities. Our subsidiaries have no obligation to pay any amounts due on the Notes or to provide us with funds to pay our obligations, whether by dividends, distributions, loans or other payments. In addition, any dividend payments, distributions, loans or advances to us by our subsidiaries in the future will require the generation of future earnings by our subsidiaries and may require regulatory approval. There are statutory and regulatory limitations on the payment of dividends by Regions Bank to us, as well as by us to our stockholders. Regulations of both the Board of Governors of the Federal Reserve System (the “Federal Reserve”) and the Alabama State Banking Department affect the ability of Regions Bank to pay dividends and other distributions to us and to make loans to us. If Regions Bank is unable to make dividend payments to us and sufficient capital is not otherwise available, we may not be able to make principal and interest payments on our debt, including the Notes.

In addition, our right to participate in any distribution of assets of any of our subsidiaries upon the subsidiary’s liquidation or otherwise will generally be subject to the prior claims of creditors of that subsidiary. Your ability as a holder of the Notes to benefit indirectly from that distribution also will be subject to these prior claims. The Notes are not guaranteed by any of our subsidiaries. As a result, the Notes will be structurally subordinated to all existing and future liabilities and obligations of our subsidiaries, including deposits, which means that our subsidiaries’ creditors will be paid from our subsidiaries’ assets before holders of the Notes would have any claims to those assets. Therefore, you should look only to our assets for payments on the Notes. At September 30, 2018, the aggregate amount of all debt and other liabilities of our subsidiaries, including deposits, was approximately $106.6 billion. Our subsidiaries may incur additional debt and liabilities in the future, all of which would rank structurally senior to the Notes.

The Notes will be effectively junior to all of our and our subsidiaries’ secured indebtedness.

The Notes will be effectively subordinated to any of the existing and future secured debt we or our subsidiaries may incur, to the extent of the value of the assets securing such debt. In the event that we are declared bankrupt, become insolvent or are liquidated or reorganized, any debt that ranks ahead of the Notes will be entitled to be paid in full from our assets before any payment may be made with

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respect to the Notes. Holders of the Notes will participate ratably with all holders of our unsecured indebtedness that is deemed to be of the same ranking as the Notes, and potentially with all of our other general creditors, based upon the respective amounts owed to each holder or creditor, in our remaining assets. In any of the foregoing events, we may not have sufficient assets to pay amounts due on the Notes. As a result, if holders of the Notes receive any payments, they may receive less, ratably, than holders of secured indebtedness.

There are limited covenants in the indenture pursuant to which we will issue the Notes.

Neither we nor any of our subsidiaries is restricted from incurring additional debt or other liabilities, including additional senior debt, under the indenture pursuant to which we will issue the Notes. If we incur additional debt or liabilities, our ability to pay our obligations on the Notes could be adversely affected. We expect to incur, from time to time, additional debt and other liabilities. In addition, we are not restricted under the indenture from granting security interests over our assets, except to the extent described under “Description of Notes—Merger, Consolidation or Sale of Assets” and “Description of Notes—Certain Covenants” in this prospectus supplement, or from paying dividends or issuing or repurchasing our securities.

In addition, there are no financial covenants in the indenture. You are not protected under the indenture in the event of a highly leveraged transaction, reorganization, a default under our existing indebtedness, restructuring, merger or similar transaction that may adversely affect you, except to the extent described under “Description of Notes—Merger, Consolidation or Sale of Assets” and “Description of Notes—Certain Covenants” included in this prospectus supplement.

The Notes are not insured or guaranteed by the Federal Deposit Insurance Corporation.

The Notes are not savings accounts, deposits or other obligations of a bank and are not insured by the Federal Deposit Insurance Corporation (the “FDIC”) or any other governmental agency or instrumentality.

You may be unable to sell the Notes because there is no public trading market for the Notes.

There is no established trading market for the Original Notes or the Notes, and after this offering, we do not intend to list the Notes on any securities exchange or include the Notes in any automated quotation system. Consequently, the Notes will be relatively illiquid and you may be unable to sell your Notes. Although the representatives of the underwriters have advised us that, following completion of the offering of the Notes, one or more of the underwriters currently intend to make a secondary market in the Notes, they are not obligated to do so and may discontinue any market-making activities at any time without notice. Accordingly, a trading market for the Notes may not develop or any such market may not have sufficient liquidity.

If a trading market for the Notes develops, changes in our credit ratings or the debt markets could adversely affect the liquidity and market price of the Notes.

If a trading market develops, the liquidity and prices of the Notes will depend on many factors, including: (i) our credit ratings with major credit rating agencies; (ii) the prevailing interest rates being paid by other companies similar to us; (iii) our financial condition, financial performance and future prospects; and (iv) the overall condition of the financial markets.

The condition of the financial markets and prevailing interest rates have fluctuated significantly in the past and may fluctuate in the future. Such fluctuations could have an adverse effect on the liquidity and price of the Notes.

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In addition, credit rating agencies periodically review their ratings and ratings methodologies for the companies that they follow, including Regions, the issuer of the Notes, and Regions Bank, our depository institution subsidiary. A negative change in ratings could have an adverse effect on the liquidity and price of the Notes.

A credit rating is not a recommendation to buy, sell or hold securities and may be revised, suspended or withdrawn by the credit rating agency at any time.

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CAPITALIZATION

The following table sets forth the consolidated capitalization of Regions as of September 30, 2018 (1) on an actual basis and (2) as adjusted to give effect to the issuance and sale of the Notes offered by this prospectus supplement. The information presented here is only a summary and should be read together with the financial information incorporated by reference in this prospectus supplement and the accompanying prospectus. See “Where You Can Find More Information” in this prospectus supplement.

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USE OF PROCEEDS

The net proceeds to us from the sale of the Notes, after deduction of estimated underwriting discounts and commissions and estimated expenses payable by us and excluding accrued interest, will be approximately $497,865,000, and will be used by us for general corporate purposes. We may also use a portion of the net proceeds to repurchase shares of our common stock pursuant to our authorized stock repurchase program. However, we can provide no assurances that we will decide or be able to repurchase our common stock in the future.

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DESCRIPTION OF NOTES

General

The Notes have identical terms as, and are part of a single series of our senior debt securities with, the Original Notes, as described herein and in the accompanying prospectus. The Notes will mature at 100% of their principal amount on August 14, 2023 (the “Notes Maturity Date”). The Original Notes were issued pursuant to, and the Notes will be issued under, a senior indenture, dated as of August 8, 2005, as amended and supplemented by the Ninth Supplemental Indenture, dated as of August 13, 2018, between us and Deutsche Bank Trust Company Americas, a New York banking corporation, as trustee. The senior indenture has been filed as an exhibit to the registration statement and as an exhibit to our Current Report on Form 8-K filed on August 9, 2005 and the Ninth Supplemental Indenture has been filed as an exhibit to our Current Report on Form 8-K filed on August 13, 2018. In connection with the offering of the Notes, we plan to enter into a tenth supplemental indenture to the senior indenture, to be dated as of January 28, 2019 (the “Tenth Supplemental Indenture”). Pursuant to the Tenth Supplemental Indenture, we will surrender our right to redeem the Original Notes and the Notes prior to July 28, 2019. The Tenth Supplemental Indenture will not otherwise amend the senior indenture or the Ninth Supplemental Indenture or amend or modify the terms of the Original Notes. Throughout this summary, we refer to both the senior indenture and supplemental indentures for the Notes and the Original Notes together as the indenture. The trustee’s main role is to enforce your rights against us if we default. The following description of the Notes may not be complete and is subject to and qualified in its entirety by reference to the indenture. Wherever we refer to particular sections or defined terms of the indenture, it is our intent that those sections or defined terms will be incorporated by reference in this prospectus supplement.

The Notes will be issued in fully registered book-entry form without coupons and in minimum denominations of $2,000 and integral multiples of $1,000 in excess thereof. The Original Notes are not listed on any securities exchange, and we do not intend to apply for the listing of the Notes on any securities exchange. The Notes will be unsecured and will rank equally among themselves and with all of our other unsecured and unsubordinated indebtedness. The Notes will not be guaranteed by any of our subsidiaries. Our subsidiaries may, without notice or consent of the holders of the Notes, incur additional debt or liabilities in the future, all of which would rank structurally senior to the Notes. Regions may from time to time, without notice or consent of the holders of the Notes, incur additional senior indebtedness ranking equally with the Notes, as well as additional subordinated indebtedness ranking junior to the Notes. As of September 30, 2018, the aggregate amount of all debt and other liabilities of our subsidiaries, including deposits, was approximately $106.6 billion.

Because we are a holding company, our rights and the rights of our creditors, including holders of the Notes, to participate in the assets of any of our subsidiaries upon the liquidation or reorganization of any of our subsidiaries will be subject to prior claims of the creditors of any such subsidiary, including, in the case of Regions Bank, its depositors, except to the extent that we are a creditor of such subsidiary with recognized claims against the subsidiary. Claims on our subsidiaries by creditors other than us may include claims with respect to long-term debt and substantial obligations with respect to deposit liabilities, federal funds purchased, securities sold under repurchase agreements, other short-term borrowings and various other financial obligations.

The Notes will be subject to defeasance under the conditions described below in “—Discharge, Defeasance and Covenant Defeasance.” Except in connection with certain optional redemption circumstances for the Notes described under “—Redemption,” no additional amounts or make-whole amounts, as those terms are defined in the indenture, will be payable with respect to the Notes. The Notes are not savings accounts, deposits or other obligations of any of our bank or non-bank

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subsidiaries and are not insured by the FDIC, the Federal Reserve or any other governmental agency or instrumentality.

The Notes will initially be limited to an aggregate principal amount of $500,000,000, and the Original Notes were issued in an aggregate principal amount of $500,000,000, for a total aggregate principal amount of 3.800% Senior Notes due 2023 of $1,000,000,000. We may, without the consent of the holders of the Notes, further increase the principal amount of the Notes by issuing additional notes in the future on the same terms and conditions, except for any differences in the issue date, the issue price and interest accrued prior to the date of issuance of the additional notes, and with the same CUSIP number as the Notes offered by this prospectus supplement; provided that if any additional notes are not fungible with the Notes offered by this prospectus supplement for United States federal income tax purposes, such additional notes will be issued under a separate CUSIP number. Any additional notes would rank equally and ratably and be treated as a single series for all purposes of the indenture with the Original Notes and the Notes offered by this prospectus supplement.

The principal of the Notes will be payable on the Notes Maturity Date or such earlier date set for redemption of any Notes (together with any interest then payable), as applicable. If the Notes Maturity Date falls on a day that is not a “business day” (as defined below), any payment in relation to such date will be postponed to the next day that is a business day, and no interest shall accrue on the amount payable for the period from and after such Notes Maturity Date. Payments of principal and interest to owners of the book-entry interests described below are expected to be made in accordance with the procedures of The Depository Trust Company and its participants, including Clearstream Banking, société anonyme, and Euroclear Bank S.A./N.V., as operator of the Euroclear System. When we refer to a “business day” with respect to the Notes, we mean any day, other than a Saturday or Sunday, that is neither a legal holiday nor a day on which banking institutions in The City of New York are authorized or required by law, regulation or executive order to close.

Interest on the Notes

The Notes will bear interest at an annual rate equal to 3.800%. Interest on the Notes will accrue from August 13, 2018. Interest on the Notes will be payable semi-annually in arrears on February 14 and August 14 of each year, beginning on February 14, 2019, to the persons in whose names the Notes are registered at the close of business on the preceding January 31 and July 31, respectively, of each year. Interest on the Notes at the Notes Maturity Date will be payable to the persons to whom principal is payable. Interest on the Notes will be computed on the basis of a 360-day year consisting of twelve 30-day months. Interest payments on the Notes will be the amount of interest accrued from and including August 13, 2018 or the most recent interest payment date on which interest has been paid to, but excluding, the interest payment date, redemption date or the Notes Maturity Date, as the case may be (each, a “Notes Interest Period”).

If any Notes Interest Payment Date falls on a day that is not a business day, the related payment of interest will be made on the next day that is a business day, and no interest on the Notes or such payment will accrue for the period from and after the Notes Interest Payment Date.

Ranking

The Notes will be senior unsecured obligations and will rank equally with all of our other unsecured and unsubordinated indebtedness and will be effectively subordinated to our existing and future secured indebtedness, to the extent of the value of the collateral securing such indebtedness, and structurally subordinated to the existing and future indebtedness of our subsidiaries. Because we are a holding company, our right to participate in any distribution of the assets of our banking or

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nonbanking subsidiaries upon a subsidiary’s dissolution, winding-up, liquidation or reorganization or otherwise, and thus the ability of a holder of Notes to benefit indirectly from such distribution, is subject to prior claims of creditors of any such subsidiary, except to the extent that we may be a creditor of that subsidiary and our claims are recognized. There are legal limitations on the extent to which some of our subsidiaries, including Regions Bank, may extend credit, pay dividends or otherwise supply funds to, or engage in transactions with, us or some of our other subsidiaries. Our subsidiaries are separate and distinct legal entities and have no obligation, contingent or otherwise, to pay amounts due under our contracts or otherwise to make any funds available to us. Our subsidiaries may, without notice or consent of the holders of the Notes, incur additional debt and liabilities in the future, all of which would rank structurally senior to the Notes. As of September 30, 2018, our subsidiaries had, in the aggregate, outstanding debt and other liabilities, including deposits, of approximately $106.6 billion. All of such debt and other liabilities would rank structurally senior to the notes in case of liquidation or otherwise. As of September 30, 2018, Regions Financial Corporation (parent company only) had an aggregate of approximately $2.6 billion of outstanding senior debt, including the Original Notes, and approximately $555 million of outstanding subordinated and junior subordinated debt.

Redemption

The Notes may not be redeemed by us prior to July 28, 2019. The Original Notes were redeemable at our option beginning February 14, 2019. In connection with the issuance of the Notes, we are entering into the Tenth Supplemental Indenture, pursuant to which we are surrendering our right to redeem the Original Notes and the Notes prior to July 28, 2019. We may redeem the Notes at our option, in whole or in part, at any time or from time to time on or after July 28, 2019 and prior to July 14, 2023, at a redemption price equal to the greater of the following amounts, plus, in each case, accrued and unpaid interest thereon, if any, to, but excluding, the redemption date:

In determining the present values of the remaining scheduled payments that would be due, assuming, for this purpose, that the Notes matured on July 14, 2023, we will discount such payments to the redemption date (not including any interest accrued to, but excluding, the redemption date) on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) using a discount rate equal to the Treasury Rate (as defined below) plus .15% (15 basis points).

We may redeem the Notes at our option, in whole or in part, at any time or from time to time on or after July 14, 2023, at a redemption price equal to 100% of the aggregate principal amount of the Notes to be redeemed, plus accrued and unpaid interest thereon, if any, to, but excluding, the redemption date. Notwithstanding the foregoing, installments of interest on Notes that are due and payable on interest payment dates falling on or prior to the relevant redemption date will be payable to the holders of such Notes registered as such at the close of business on the relevant record date according to their terms and the provisions of the indenture. The trustee will have no duty to calculate, or verify the determination of, the redemption price.

If any Notes are redeemed, the redemption price payable to the holder of any Notes called for redemption will be payable on the applicable redemption date against the surrender to us or our agent of any certificate(s) evidencing the Notes called for redemption.

A notice of redemption shall be given by first class mail to the holders of record of the Notes to be redeemed at their respective addresses appearing on the securities register with respect to the Notes

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(provided that, if the Notes are held in book-entry form through the DTC (as defined in “Book-Entry, Delivery and Form” below), we may give such notice in any manner permitted by DTC). Any notice of redemption shall be mailed at least 10 days and no more than 60 days before the redemption date, and each notice of redemption will include a statement setting forth, for the Notes:

Any notice of redemption mailed or otherwise delivered as described above shall be conclusively presumed to have been duly given, whether or not any holder of Notes receives such notice. Failure to duly give notice of redemption, or any defect in such notice, to any holder whose Notes are designated for redemption in whole or in part will not affect the validity of the proceedings for the redemption of any other Notes.

In the case of any redemption of only part of the Notes then outstanding, the Notes to be redeemed will be selected by the trustee using such method as the trustee shall deem fair and appropriate, and which may provide for the selection for redemption of portions of the principal amount of Notes of a denomination larger than the minimum authorized denomination for the Notes.

On or prior to any redemption date, we will deposit with the trustee or a paying agent an amount of money sufficient to pay on the redemption date the redemption price of, and accrued interest to the redemption date (if any), all Notes to be redeemed on such date. After notice of a redemption has been given as described above, the Notes to be redeemed will, on the applicable redemption date, become due and payable at the redemption price, and from and after such redemption date, those Notes selected for redemption shall cease to bear interest.

The Notes will not be subject to repayment at the option of the holder at any time prior to maturity and will not be entitled to any sinking fund.

As used in this section:

“Comparable Treasury Issue” means the United States Treasury security selected by the Independent Investment Banker as having an actual or interpolated maturity comparable to the remaining term of the Notes to be redeemed (assuming, for this purpose, that the Notes matured on July 14, 2023) that would be utilized, at the time of selection and in accordance with customary financial practice, in pricing new issues of corporate debt securities of comparable maturity to the remaining term of the Notes.

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“Comparable Treasury Price” means, with respect to any redemption date for the Notes, (i) the arithmetic average of five Reference Treasury Dealer Quotations for such redemption date, after excluding the highest and lowest such Reference Treasury Dealer Quotations, or (ii) if we obtain fewer than five such Reference Treasury Dealer Quotations, the arithmetic average of all such quotations for such redemption date.

“Independent Investment Banker” means, with respect to any redemption date for the Notes, one of the Reference Treasury Dealers selected by us or, if such firms or any such successors, as the case may be, are unwilling or unable to select the Comparable Treasury Issue, an independent investment banking institution of national standing selected by us.

“Primary Treasury Dealer” means a primary United States government securities dealer in the United States.

“Reference Treasury Dealers” means, with respect to any redemption date for the Notes, (1) RBC Capital Markets, LLC (or its successor) or any of its affiliates that is a Primary Treasury Dealer, (2) Goldman Sachs & Co. LLC (or its successor) or any of its affiliates that is a Primary Treasury Dealer, (3) J.P. Morgan Securities LLC (or its successor) or any of its affiliates that is a Primary Treasury Dealer, (4) Morgan Stanley & Co. LLC or any of its affiliates that is a Primary Treasury Dealer, and (5) one other Primary Treasury Dealer selected by us; provided, however, that if any of the foregoing ceases to be a Primary Treasury Dealer, we shall substitute therefor another Primary Treasury Dealer selected by us.

“Reference Treasury Dealer Quotations” means, with respect to each Reference Treasury Dealer and any redemption date, the arithmetic average of the bid and asked prices for the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) quoted in writing to us by such Reference Treasury Dealer at 5:00 p.m., New York City time, on the third business day preceding such redemption date.

“Treasury Rate” means:

The Treasury Rate will be calculated by Regions on the third business day preceding the redemption date.

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Merger, Consolidation or Sale of Assets

We may consolidate with, or sell, lease or otherwise transfer all or substantially all of our assets to, or merge with or into, any other corporation, trust or other entity provided that:

Upon any such consolidation, merger, or sale, the successor corporation formed, or into which we are merged or to which we are sold, shall succeed to, and be substituted for, us under the indenture.

This covenant would not apply to any recapitalization transaction, change of control of us or a transaction in which we incur a large amount of additional debt unless the transactions or change of control included a merger or consolidation or transfer of all or substantially all of our assets. There are no covenants or other provisions in the indenture providing for a put or increased interest or that would otherwise afford holders of the Notes additional protection in the event of a recapitalization transaction, a change of control of us or a transaction in which we incur or acquire a large amount of additional debt.

Although there is a limited body of case law interpreting the phrase “substantially all,” there is no precise established definition of the phrase under applicable law. Accordingly, in certain circumstances there may be a degree of uncertainty as to whether a particular transaction would involve “all or substantially all” of the property or assets of a person.

Certain Covenants

Existence.    Except as permitted under “—Merger, Consolidation or Sale of Assets” above, we will do or cause to be done all things necessary to preserve and keep our and our subsidiaries’ legal existence, rights and franchises in full force and effect; provided, however, that we will not be required to preserve any right or franchise if we determine that the preservation of that right or franchise is no longer desirable in the conduct of our and our subsidiaries’ business as a whole and that its loss is not disadvantageous in any material respect to the holders of the Notes.

Maintenance of Properties.    We will cause all of our material properties used or useful in the conduct of our business or the business of any of our subsidiaries to be maintained and kept in good condition, repair and working order and supplied with all necessary equipment and we will cause to be made all necessary repairs, renewals, replacements, betterments and improvements for those

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properties, as we in our judgment believe is necessary so that we may carry on the business related to those properties properly and advantageously at all times; provided, however, that we will not be prevented from selling or otherwise disposing of our properties or the properties of our subsidiaries in the ordinary course of business.

Payment of Taxes and Other Claims.    We will pay or discharge, or cause to be paid or discharged, before they become delinquent:

provided, however, that we will not be required to pay or discharge or cause to be paid or discharged any tax, assessment, charge or claim the amount, applicability or validity of which is being contested in good faith by appropriate proceedings.

Provision of Financial Information.    Whether or not we are subject to Section 13 or 15(d) of the Exchange Act, we will cause to be filed with the SEC the annual reports, quarterly reports and other documents which we would be required to file pursuant to Section 13 or 15(d) of the Exchange Act on or prior to the respective dates by which we are or would be required to file such documents if we were so subject. We will also:

Waiver of Certain Covenants.    We may choose not to comply with any term, provision or condition of the foregoing covenants, or with certain other terms, provisions or conditions with respect to the Notes (except any such term, provision or condition which could not be amended without the consent of all holders of the Notes and the Original Notes), if before or after the time for compliance with the covenant, term, provision or condition, the holders of at least a majority in principal amount of the Notes and the Original Notes, taken together, either waive compliance in that instance or generally waive compliance with that covenant or condition. Unless the holders of the Notes and the Original Notes expressly waive compliance with a covenant and the waiver has become effective, our obligations and the duties of the trustee in respect of the term, provision, or condition will remain in full force and effect.

Sale or Issuance of Capital Stock in Principal Subsidiary Bank.    We will not be permitted, pursuant to the covenants in the indenture, directly or indirectly, to do any of the following:

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The term “principal subsidiary bank” means any subsidiary bank, the consolidated assets of which constitute 50% or more of our consolidated assets. As of the date of this prospectus supplement, our principal subsidiary bank is Regions Bank. The indenture does not restrict the ability of the principal subsidiary bank to sell or dispose of assets.

The foregoing covenant in the indenture, however, does not prohibit any of the following:

the sale, assignment, pledge, transfer or other disposition is made in compliance with an order of a court or regulatory authority of competent jurisdiction or as a condition imposed by any such court or regulatory authority to the acquisition by us or any principal subsidiary bank, directly or indirectly, of any other corporation, trust or other entity;

after giving effect to such transaction and to any potential dilution, we and our directly or indirectly wholly-owned subsidiaries will own, directly or indirectly, at least 80% of the voting stock of such principal subsidiary bank;

Events of Default, Notice and Waiver

Each of the following “Events of Default” set forth in the indenture will be applicable to the Notes:

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If there is a continuing Event of Default under the indenture with respect to the Notes (except for an Event of Default described in clause (3) above triggered by a failure on our part to file with the trustee copies of the annual reports, quarterly reports and other documents that we are or would be required to file with the SEC pursuant to Section 13 or 15(d) of the Exchange Act), then the trustee or the holders of not less than 25% of the total principal amount of the Notes and the Original Notes, taken together, may declare immediately due and payable the principal amount of the Notes.

However, at any time after a declaration of acceleration with respect to the Notes then outstanding has been made, but before a judgment or decree for payment of the money due has been obtained by the trustee, the holders of a majority in principal amount of the Notes and the Original Notes, taken together, may rescind and annul such declaration and its consequences if:

The indenture also provides that the holders of not less than a majority in principal amount of the Notes and the Original Notes, taken together, may waive any past default with respect to the Notes and its consequences, except a default consisting of:

The trustee is generally required to give notice to the holders of the Notes within 90 days of a default of which the trustee has actual knowledge under the indenture unless the default has been cured or waived.

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The indenture provides that no holder of the Notes may institute a proceeding with respect to the indenture or for any remedy under the indenture, unless such holder has previously given notice to the trustee of an Event of Default and the trustee fails to act for 60 days after:

Subject to provisions in the indenture relating to the trustee’s duties in case of default, the trustee is not under an obligation to exercise any of its rights or powers under the indenture at the request or direction of any holders of the Notes unless the holders of the Notes have offered to the trustee security or indemnity satisfactory to it. Subject to these provisions for the indemnification of the trustee, the holders of not less than a majority in principal amount of the Notes and the Original Notes, taken together, will have the right to direct the time, method and place of conducting any proceeding for any remedy available to the trustee, or of exercising any trust or power conferred upon the trustee. However, the trustee may refuse to follow any direction which is in conflict with any law or the indenture, which may involve the trustee in personal liability or which may be unduly prejudicial to the holders of the Notes not joining in the direction.

Within 120 days after the close of each fiscal year, we must deliver to the trustee a certificate, signed by one of several specified officers, stating such officer’s knowledge of our compliance with all the conditions and covenants under the indenture and, in the event of any noncompliance, specifying such noncompliance and the nature and status of the noncompliance.

Modification of the Indenture

Modification and amendment of the indenture may be made only with the consent of the holders of not less than a majority in principal amount of the Notes and the Original Notes, taken together. However, no modification or amendment may, without the consent of each holder affected thereby, do any of the following:

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We and the trustee may modify or amend the indenture, without the consent of any holder of the Notes for any of the following purposes:

Discharge, Defeasance and Covenant Defeasance

Under the indenture, we may discharge certain obligations to holders of the Notes that have not already been delivered to the trustee for cancellation and that either have become due and payable or will become due and payable within one year. We can discharge these obligations by irrevocably depositing with the trustee funds in United States dollars in an amount sufficient to pay the entire

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indebtedness on the Notes and the Original Notes, taken together, including the principal of and interest payable on the Notes to the date of the deposit, if the Notes have become due and payable, or to the Notes Maturity Date, if the Notes have not yet become due and payable.

We may also elect either of the following:

If we choose to defease and discharge our obligations under the covenants with respect to the Notes, any failure to comply with the obligations imposed on us by the covenants will not constitute a default or an Event of Default with respect to the Notes. However, to make either election, we must irrevocably deposit with the trustee, in trust, an amount, in United States dollars, in United States government obligations or both, that will provide sufficient funds to pay the principal of (and premium, if any) and interest on the Notes and the Original Notes, taken together, on the relevant scheduled due dates.

We may defease and discharge our obligations as described in the preceding paragraphs only if, among other things:

In the event we effect covenant defeasance with respect to the Notes and the Notes are declared due and payable because of the occurrence of any Event of Default, the amount on deposit with the

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trustee will still be sufficient to pay amounts due on the Notes on the Notes Maturity Date but may not be sufficient to pay amounts due on the Notes at the time of the acceleration resulting from the Event of Default. In this case, we would remain liable to make payment of such amounts due at the time of acceleration.

Same-Day Settlement and Payment

Initial settlement for the Notes will be made in immediately available funds. Secondary market trading between DTC participants will occur in the ordinary way in accordance with DTC rules and will be settled in immediately available funds using DTC’s Same-Day Funds Settlement System.

Trustee

Deutsche Bank Trust Company Americas will act as trustee for the Notes. From time to time, we and some of our subsidiaries may maintain deposit accounts and conduct other banking transactions, including lending transactions, with Deutsche Bank Trust Company Americas in the ordinary course of business. Additionally, we maintain banking relationships with Deutsche Bank Trust Company Americas and its affiliates in the ordinary course of business. These banking relationships include Deutsche Bank Trust Company Americas serving as trustee under the indenture involving our existing debt securities, serving as trustee in connection with trust preferred securities that were issued by our financing trusts, and providing us with general banking services. Upon the occurrence of an Event of Default or an event which, after notice or lapse of time or both, would become an Event of Default under the Notes, or upon the occurrence of a default under another indenture under which Deutsche Bank Trust Company Americas serves as trustee, the trustee may be deemed to have a conflicting interest with respect to the other debt securities as to which we are not in default for purposes of the Trust Indenture Act and, accordingly, may be required to resign as trustee under the indenture. In that event, we would be required to appoint a successor trustee.

Miscellaneous

We, or our affiliates, may from time to time purchase any of the Notes that are then outstanding, by tender in the open market or by private agreement.

Notices

Any notices required to be given to the holders of the Notes will be given to DTC.

Governing Law

The indenture and the Notes are governed by and will be construed in accordance with the laws of the State of New York.

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BOOK-ENTRY, DELIVERY AND FORM

The Depository Trust Company, which we refer to along with its successors in this capacity as “DTC”, will act as securities depository for the Notes. The Notes will be issued only as fully registered securities registered in the name of Cede & Co. (DTC’s partnership nominee) or such other name as may be requested by an authorized representative of DTC. One or more fully registered global security certificates, representing the total aggregate number of Notes, will be issued for the Notes and will be deposited with DTC.

Investors may elect to hold beneficial interests in the global security certificates representing the Notes through either DTC, in the United States, Clearstream Banking, société anonyme (“Clearstream”), and Euroclear Bank S.A./N.V., as operator of the Euroclear System (“Euroclear”), if they are participants in these systems, or indirectly through organizations that are participants in these systems.

DTC has advised us that it is a limited-purpose trust company organized under the New York Banking Law, a “banking organization” within the meaning of the New York Banking Law, a member of the Federal Reserve System, a “clearing corporation” within the meaning of the New York Uniform Commercial Code and a “clearing agency” registered pursuant to the provisions of Section 17A of the Exchange Act. DTC holds securities that DTC’s participants (“Direct Participants”) deposit with DTC. DTC also facilitates the post-trade settlement among Direct Participants of sales and other securities transactions in deposited securities, through electronic computerized book-entry transfers and pledges between Direct Participants’ accounts. This eliminates the need for physical movement of securities certificates. Direct Participants include both United States and non-United States securities brokers and dealers, banks, trust companies, clearing corporations, and certain other organizations. DTC is a wholly-owned subsidiary of The Depository Trust & Clearing Corporation (“DTCC”). DTCC, in turn, is owned by a number of Direct Participants of DTC and members of the National Securities Clearing Corporation, Fixed Income Clearing Corporation and Emerging Markets Clearing Corporation (also subsidiaries of DTCC), as well as by the New York Stock Exchange, Inc., the American Stock Exchange LLC, and the Financial Industry Regulatory Authority (“FINRA”). Access to the depository system is also available to others, such as both United States and non-United States securities brokers and dealers, banks, trust companies, and clearing corporations that clear through or maintain a custodial relationship with a Direct Participant, either directly or indirectly (“Indirect Participants”). The DTC rules applicable to DTC’s participants are on file with the SEC. More information about DTC can be found at www.dtcc.com.

Purchase of Notes under the DTC system must be made by or through Direct Participants, which will receive a credit for the Notes on DTC’s records. The ownership interest of each actual purchaser (which we refer to as “beneficial owners”) of the Notes will be recorded on the Direct or Indirect Participants’ records. Beneficial owners will not receive written confirmation from DTC of their purchase. Beneficial owners are, however, expected to receive written confirmations providing details of the transaction, as well as periodic statements of their holdings, from the Direct or Indirect Participant through which the beneficial owner entered into the transaction. Transfers of ownership interests in the Notes are to be accomplished by entries made on the books of Direct and Indirect Participants acting on behalf of beneficial owners. Beneficial owners will not receive certificates representing their ownership interests in the Notes except in the event that use of the book-entry system for the Notes is discontinued.

To facilitate subsequent transfers, all global security certificates deposited by Direct Participants with DTC are registered in the name of DTC’s partnership nominee, Cede & Co., or such other name as may be requested by an authorized representative of DTC. The deposit of the Notes with DTC and their registration in the name of Cede & Co. or such other DTC nominee do not effect any change in beneficial ownership. DTC has no knowledge of the actual beneficial owners of the Notes; DTC’s

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records reflect only the identity of the Direct Participants to whose accounts the Notes are credited, which may or may not be the beneficial owners. The Direct and Indirect Participants will remain responsible for keeping account of their holdings on behalf of their customers.

Conveyance of notices and other communications by DTC to Direct Participants, by Direct Participants to Indirect Participants, and by Direct and Indirect Participants to beneficial owners will be governed by arrangements among them, subject to any statutory or regulatory requirements as may be in effect from time to time.

Redemption notices shall be sent to DTC. If less than all of the securities within an issue are being redeemed, DTC’s practice is to determine by lot the amount of the interest of each Direct Participant in such issue to be redeemed.

Neither DTC nor Cede & Co. (nor any other DTC nominee) will consent or vote with respect to any securities unless authorized by a Direct Participant in accordance with DTC’s procedures. Under its usual procedures, DTC mails an omnibus proxy to the issuer as soon as possible after the record date. The omnibus proxy assigns Cede & Co.’s consenting or voting rights to those Direct Participants to whose accounts the Notes are credited on the record date (identified in a listing attached to the omnibus proxy).

If DTC notifies us that it is unwilling or unable to continue as depository for the global securities relating to the Notes or if at any time DTC ceases to be a clearing agency registered under the Securities Exchange Act, if so required by applicable law or regulation, we will appoint a successor depository. If we do not appoint such successor depository within 90 days after we receive such notice or become aware of such unwillingness, inability or ineligibility, or an event of default under the indenture with respect to the Notes has occurred and is continuing and the beneficial owners representing a majority in principal amount of the Notes advise DTC to cease acting as depository for the Notes, we will issue Notes in certificated form (the “Certificated Notes”) in exchange for that global security. In addition, we may at any time and in our sole discretion decide not to have the Notes represented by global securities. In such event, we will issue Certificated Notes in exchange for all of the Notes represented by global securities. The Certificated Notes issued in exchange for those global securities will be in the same minimum denominations and be of the same aggregate principal amount and tenor as the portion of each global security to be exchanged. Except as provided above, owners of beneficial interests in a global security will not be entitled to receive physical delivery of Certificated Notes and will not be considered the registered holders of the Notes for any purpose, including receiving payments of principal or interest.

As long as DTC or its nominee is the registered owner of the global security certificates, DTC or its nominee, as the case may be, will be considered the sole owner and holder of the global security certificates and all Notes represented by these certificates for all purposes under the instruments governing the rights and obligations of holders of such Notes. Except in the limited circumstances referred to above, owners of beneficial interests in global security certificates:

All redemption proceeds, distributions and interest payments on the Notes and all transfers and deliveries of such Notes will be made to Cede & Co., or such other nominee, as may be requested by

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an authorized representative of DTC. DTC’s practice is to credit Direct Participants’ accounts upon DTC’s receipt of funds and corresponding detail information from the issuer or its agent, on the payable date in accordance with their respective holdings shown on DTC’s records. Payments by participants to beneficial owners will be governed by standing instructions and customary practices, as is the case with securities held for the accounts of customers in bearer form or registered in “street name,” and will be the responsibility of that participant and not of DTC, the trustee, the issuer or any affiliate thereof, or any of their agents, subject to any statutory or regulatory requirements as may be in effect from time to time. Payment of principal and interest to Cede & Co. (or such other nominee as may be requested by an authorized representative of DTC) is the responsibility of the issuer or its agent, disbursement of such payments to Direct Participants will be the responsibility of DTC, and disbursement of such payments to the beneficial owners will be the responsibility of Direct and Indirect Participants.

Ownership of beneficial interests in the global security certificates will be limited to participants or persons that may hold beneficial interests through institutions that have accounts with DTC or its nominee. Ownership of beneficial interests in global security certificates will be shown only on, and the transfer of those ownership interests will be effected only through, records maintained by DTC or its nominee, with respect to participants’ interests, or any participant, with respect to interests of persons held by the participant on their behalf. Payments, transfers, deliveries, exchanges, redemptions and other matters relating to beneficial interests in global security certificates may be subject to various policies and procedures adopted by DTC from time to time. Regions will not have any responsibility or liability for any aspect of DTC’s or any Direct or Indirect Participant’s records relating to, or for payments made on account of, beneficial interests in global security certificates, or for maintaining, supervising or reviewing any of DTC’s records or any Direct or Indirect Participant’s records relating to these beneficial ownership interests.

Neither Regions, nor any of the underwriters or the trustee, will have any responsibility for the performance by DTC or its Direct Participants or Indirect Participants of their respective obligations under the rules and procedures governing DTC.

The information in this section concerning DTC and its book-entry system has been obtained from sources that Regions believes to be accurate, but we assume no responsibility for the accuracy thereof.

Clearstream and Euroclear.    Clearstream and Euroclear will hold interests on behalf of their participants through customers’ securities accounts in Clearstream’s and Euroclear’s names on the books of their respective depositaries, which in turn will hold interests in customers’ securities accounts in the depositaries’ names on the books of DTC. Beneficial interests in the global securities representing the Notes will be held in denominations of $2,000 and integral multiples of $1,000 in excess thereof.

Clearstream holds securities for its participating organizations (“Clearstream Participants”) and facilitates the clearance and settlement of securities transactions between Clearstream Participants through electronic book-entry changes in accounts of Clearstream Participants, thereby eliminating the need for physical movement of certificates. Clearstream provides to Clearstream Participants, among other things, services for safekeeping, administration, clearance and settlement of internationally traded securities and securities lending and borrowing. Clearstream interfaces with domestic markets in several countries.

Clearstream is registered as a bank in Luxembourg, and as such is subject to regulation by the Commission de Surveillance du Secteur Financier and the Banque Centrale du Luxembourg, which supervise and oversee the activities of Luxembourg banks. Clearstream Participants are world-wide financial institutions including underwriters, securities brokers and dealers, banks, trust companies and

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clearing corporations, and may include the underwriters or their affiliates. Indirect access to Clearstream is available to other institutions that clear through or maintain a custodial relationship with a Clearstream Participant. Clearstream has established an electronic bridge with Euroclear as the operator of the Euroclear System (the “Euroclear Operator”) in Brussels to facilitate settlement of trades between Clearstream and the Euroclear Operator.

Distributions with respect to the Notes held beneficially through Clearstream will be credited to cash accounts of Clearstream Participants in accordance with its rules and procedures, to the extent received by the United States depositary for Clearstream.

Euroclear holds securities and book-entry interests in securities for participating organizations (“Euroclear Participants”) and facilitates the clearance and settlement of securities transactions between Euroclear Participants, and between Euroclear Participants and participants of certain other securities intermediaries through electronic book-entry changes in accounts of such participants or other securities intermediaries. Euroclear provides Euroclear Participants, among other things, with safekeeping, administration, clearance and settlement, securities lending and borrowing, and related services. Euroclear Participants are investment banks, securities brokers and dealers, banks, central banks, supranationals, custodians, investment managers, corporations, trust companies and certain other organizations, and may include the underwriters or their affiliates. Non-participants in Euroclear may hold and transfer beneficial interests in a global security through accounts with a Euroclear Participant or any other securities intermediary that holds a book-entry interest in a global security through one or more securities intermediaries standing between such other securities intermediary and Euroclear.

Securities clearance accounts and cash accounts with the Euroclear Operator are governed by the Terms and Conditions Governing Use of Euroclear and the related Operating Procedures of the Euroclear System, and applicable Belgian law (collectively, the “Terms and Conditions”). The Terms and Conditions govern transfers of securities and cash within Euroclear, withdrawals of securities and cash from Euroclear and receipts of payments with respect to securities in Euroclear. All securities in Euroclear are held on a fungible basis without attribution of specific certificates to specific securities clearance accounts. The Euroclear Operator acts under the Terms and Conditions only on behalf of Euroclear Participants, and has no record of or relationship with persons holding through Euroclear Participants.

Distributions with respect to Notes held beneficially through Euroclear will be credited to the cash accounts of Euroclear Participants in accordance with the Terms and Conditions, to the extent received by the United States depositary for Euroclear.

Transfers between Euroclear Participants and Clearstream Participants will be effected in the ordinary way in accordance with their respective rules and operating procedures.

Cross-market transfers between DTC’s participating organizations (“DTC Participants”), on the one hand, and Euroclear Participants or Clearstream Participants, on the other hand, will be effected through DTC in accordance with DTC’s rules on behalf of Euroclear or Clearstream, as the case may be, by its United States depositary; however, such cross-market transactions will require delivery of instructions to Euroclear or Clearstream, as the case may be, by the counterparty in such system in accordance with the rules and procedures and within the established deadlines (European time) of such system. Euroclear or Clearstream, as the case may be, will, if the transaction meets its settlement requirements, deliver instructions to its United States depositary to take action to effect final settlement on its behalf by delivering or receiving interests in the global security in DTC, and making or receiving payment in accordance with normal procedures for same-day fund settlement applicable to DTC. Euroclear Participants and Clearstream Participants may not deliver instructions directly to their respective United States depositaries.

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Due to time zone differences, the securities accounts of a Euroclear Participant or Clearstream Participant purchasing an interest in a global security from a DTC Participant in DTC will be credited, and any such crediting will be reported to the relevant Euroclear Participant or Clearstream Participant, during the securities settlement processing day (which must be a business day for Euroclear or Clearstream) immediately following the settlement date of DTC. Cash received in Euroclear or Clearstream as a result of sales of interests in a global security related to the Notes by or through a Euroclear Participant or Clearstream Participant to a DTC Participant will be received with value on the settlement date of DTC but will be available in the relevant Euroclear or Clearstream cash account only as of the business day for Euroclear or Clearstream following the DTC’s settlement date.

The information in this section concerning Euroclear and Clearstream and their book-entry systems has been obtained from sources that we believe to be reliable, but we take no responsibility for the accuracy of that information.

None of us, any of the underwriters or the trustee will have any responsibility for the performance by Euroclear or Clearstream or their respective participants of their respective obligations under the rules and procedures governing their operations.

Although DTC, Clearstream and Euroclear have agreed to the foregoing procedures in order to facilitate transfers of securities among participants of DTC, Clearstream and Euroclear, they are under no obligation to perform or continue to perform such procedures and they may discontinue the procedures at any time.

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MATERIAL UNITED STATES FEDERAL INCOME TAX CONSEQUENCES

This section describes the material United States federal income tax consequences of owning the Notes we are offering. It applies to you only if you acquire Notes in the initial offering at the offering price and you hold your Notes as capital assets for United States federal income tax purposes. This section addresses only United States federal income taxation and does not discuss all of the tax consequences that may be relevant to you in light of your individual circumstances, including foreign, state or local tax consequences, and tax consequences arising under the Medicare contribution tax on net investment income or the alternative minimum tax. This section does not apply to you if you are a member of a class of holders subject to special rules, such as:

If you purchase Notes at a price other than the initial offering price, the amortizable bond premium or market discount rules may also apply to you. You should consult your tax advisor regarding this possibility.

This section is based on the Internal Revenue Code of 1986, as amended (the “Code”), its legislative history, existing and proposed regulations under the Code, published rulings and court decisions, all as currently in effect. These authorities are subject to change, possibly on a retroactive basis.

If an entity or arrangement that is treated as a partnership for United States federal income tax purposes holds the Notes, the United States federal income tax treatment of a partner will generally depend on the status of the partner and the tax treatment of the partnership. A partner in a partnership holding the Notes should consult its tax advisor with regard to the United States federal income tax treatment of an investment in the Notes.

Please consult your own tax advisor concerning the consequences of owning these Notes in your particular circumstances under the Code and the laws of any other taxing jurisdiction.

Qualified Reopening

The Notes offered hereby will be treated as issued in a “qualified reopening” of the Original Notes for United States federal income tax purposes. Accordingly, the Notes will be considered to have the same issue date and issue price as the Original Notes.

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This subsection describes the tax consequences to a United States holder. You are a United States holder if you are a beneficial owner of a Note and you are, for United States federal income tax purposes:

If you are not a United States holder, this subsection does not apply to you and you should refer to “Non-United States Holders” below.

Payments of Interest.    You will generally be taxed on interest on your Note as ordinary income at the time you receive the interest or when it accrues, depending on your method of accounting for tax purposes. However, the portion of the first interest payment on your Note that represents a return of the accrued interest that you paid as part of the issue price of your Note will not be treated as an interest payment for United States federal income tax purposes, and will accordingly not be includible in income.

The Notes may be issued with a de minimis amount of original issue discount (“OID”). While a United States holder is generally not required to include de minimis OID in income prior to the sale or maturity of the Notes, United States holders that use an accrual method of accounting for tax purposes (“accrual method holders”) and maintain certain types of financial statements may be required to include de minimis OID on the Notes in income no later than the time upon which they include such amounts in income on their financial statements (“the book/tax conformity rule”). Accrual method holders should consult their tax advisors regarding the tax consequences to them of the book/tax conformity rule.

Purchase, Sale and Retirement of the Notes.    Your adjusted tax basis in your Note generally will be its cost, reduced by any payments on the Note that are not included in income. You will generally recognize capital gain or loss on the sale or retirement of your Note equal to the difference between the amount you realize on the sale or retirement, excluding any amounts attributable to accrued but unpaid interest (which will be taxable as ordinary income to the extent not previously included in income), and your adjusted tax basis in your Note. Capital gain of a non-corporate United States holder is generally taxed at preferential rates where the property is held for more than one year. The deductibility of capital losses is subject to limitations.

Non-United States Holders

This subsection describes the tax consequences to a non-United States holder. You are a non-United States holder if you are the beneficial owner of a Note and are, for United States federal income tax purposes:

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If you are a United States holder, this subsection does not apply to you.

If you are a non-United States holder, under current United States federal income tax law, and subject to the discussions of FATCA (as defined below) withholding and backup withholding below, no withholding of United States federal income tax will apply to a payment of interest on a Note under the “Portfolio Interest Exemption,” provided that:

If you cannot satisfy the requirements of the Portfolio Interest Exemption described above, payments of interest on the Notes made to you would be subject to a 30% United States federal withholding tax, unless you provide your withholding agent with a properly executed (i) IRS Form W-8BEN or W-8BEN-E or other applicable certification claiming an exemption from or reduction of withholding under an applicable United States income tax treaty; or (ii) IRS Form W-8ECI stating that the payment of interest on the Notes is not subject to withholding tax because it is effectively connected with your conduct of a trade or business within the United States.

Any gain realized on the disposition of a Note generally will not be subject to United States federal income tax unless:

If you are engaged in a trade or business within the United States (and, if one of certain tax treaties applies, if you maintain a permanent establishment within the United States in connection with that trade or business) and the interest or gain on the Notes is effectively connected with the conduct of that trade or business (and, if one of certain tax treaties applies, attributable to that permanent establishment), you will be subject to United States federal income tax on the interest or gain on a net income basis in the same manner as if you were a United States holder. In addition, a non-United States holder that is a foreign corporation that is engaged in a trade or business within the United States may be subject to a 30% (or, if one of certain tax treaties applies, any lower rates as provided in that treaty) branch profits tax on any interest or gain that is effectively connected with the conduct of that trade or business.

FATCA Withholding

Pursuant to sections 1471 through 1474 of the Code, commonly known as the Foreign Account Tax Compliance Act (“FATCA”), a 30% withholding tax (“FATCA withholding”) may be imposed on certain payments to you or to certain foreign financial institutions, investment funds and other non-United States persons receiving payments on your behalf if you or such persons fail to comply with

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certain information reporting requirements. Payments of interest that you receive in respect of the Notes could be affected by this withholding if you are subject to the FATCA information reporting requirements and fail to comply with them or if you hold Notes through a non-United States person (e.g., a foreign bank or broker) that fails to comply with these requirements (even if payments to you would not otherwise have been subject to FATCA withholding).

We will not pay any additional amounts in respect of FATCA withholding, so if this withholding applies you will receive significantly less than the amount that you would have otherwise received with respect to your Notes. Depending on your circumstances, you may be entitled to a refund or credit in respect of some or all of this withholding. However, even if you are entitled to have any such withholding refunded, the required procedures could be cumbersome and significantly delay your receipt of any withheld amounts.

You should consult your own tax advisors regarding the relevant United States law and other official guidance on FATCA withholding.

Backup Withholding and Information Reporting

In general, if you are a noncorporate United States holder, we and other payors are required to report to the IRS all payments of principal, premium, if any, and interest on your Note, unless you are an exempt recipient, and provide any required proof of your status. In addition, we and other payors are required to report to the IRS any payment of proceeds from the disposition of a Note by you before maturity within the United States. Additionally, backup withholding may apply to any such payments if you fail to provide an accurate taxpayer identification number or a certification that you are not subject to backup withholding, or you are notified by the IRS that you have failed to report all interest and dividends required to be shown on your United States federal income tax returns.

In general (and except as described below), if you are a non-United States holder, backup withholding and information reporting will not apply to the payment of interest to you on the Notes, or to the proceeds from the disposition of the Notes by you, in each case, if you certify under penalties of perjury that you are a non-United States person and the payor does not have actual knowledge or reason to know to the contrary. However, the amount of interest payments, the name and address of the beneficial owner and the amount, if any, of tax withheld with respect to these payments may be reported to the IRS. Copies of the information returns reporting such interest payments and any withholding may also be made available to the tax authorities in the country in which you reside under the provisions of an applicable income tax treaty.

Backup withholding is not an additional tax and any amounts withheld under the backup withholding rules will generally be allowed as a refund or a credit against your United States federal income tax liability, provided the required information is timely furnished to the IRS.

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CERTAIN ERISA CONSIDERATIONS

The following is a summary of certain considerations associated with the purchase of our Notes by employee benefit plans (as defined in Section 3(3) of ERISA) that are subject to Title I of the United States Employee Retirement Income Security Act of 1974, as amended (“ERISA”) plans described in Section 4975 of the Code, including individual retirement accounts (each, an “IRA”) or Keogh Plans, plans subject to any other federal, state, local, non-United States or other laws or regulations that are similar to such provisions of the Code or ERISA (collectively, “Similar Laws”), and entities whose underlying assets are considered to be “plan assets” of any such plan, account or arrangement (each, a “Plan”).

ERISA and the Code impose certain duties on persons who are fiduciaries of a Plan subject to Title I of ERISA or Section 4975 of the Code (an “ERISA Plan”) and prohibit certain transactions involving the assets of an ERISA Plan and its fiduciaries or other interested parties. Under ERISA and the Code, any person who exercises any discretionary authority or control over the administration of such ERISA Plan or the management or disposition of the assets of such ERISA Plan, or who renders investment advice for a fee or other compensation to such an ERISA Plan, is generally considered to be a fiduciary of the ERISA Plan. A fiduciary of a Plan should consider the fiduciary standards of ERISA or other applicable Similar Laws in the context of the Plan’s particular circumstances before authorizing an investment in our Notes. Among other factors, the fiduciary should consider whether the investment would satisfy the prudence and diversification requirements of ERISA, if applicable, and any applicable Similar Laws and would be consistent with the documents and instruments governing the Plan, and whether the investment would involve a prohibited transaction under ERISA, the Code or any applicable Similar Laws.

Section 406 of ERISA and Section 4975 of the Code prohibit ERISA Plans from engaging in certain transactions involving “plan assets” with persons who are “parties in interest” under ERISA or “disqualified persons” under the Code with respect to the ERISA Plan, unless an exemption is available. A party in interest or disqualified person who engages in a non-exempt prohibited transaction may be subject to excise taxes and other penalties and liabilities under ERISA or Section 4975 of the Code for those persons, unless exemptive relief is available under an applicable statutory, regulatory or administrative exemption. In addition, the fiduciary of the ERISA Plan that engaged in such non-exempt prohibited transaction may be subject to penalties under ERISA and the Code. In the case of an IRA, the occurrence of a prohibited transaction could cause the IRA to lose its tax-exempt status. Employee benefit plans that are governmental plans (as defined in Section 3(32) of ERISA), certain church plans (as defined in Section 3(33) of ERISA) and non-United States plans (as described in Section 4(b)(4) of ERISA) (“Non-ERISA Arrangements”) are not subject to the requirements of Section 406 of ERISA or Section 4975 of the Code, but may be subject to Similar Laws.

The acquisition or holding of our Notes by an ERISA Plan or any entity whose underlying assets include “plan assets” by reason of any ERISA Plan’s investment in the entity (a “Plan Asset Entity”) with respect to which we, the agents or any of our respective affiliates is a party in interest or disqualified person may result in a prohibited transaction under Section 406 of ERISA or Section 4975 of the Code, unless our Notes are acquired and held (and to the extent applicable, disposed of) pursuant to an applicable statutory, class or prohibited transaction exemption. In this regard, the United States Department of Labor has issued prohibited transaction class exemptions, or “PTCEs,” that may provide exemptive relief if required for direct or indirect prohibited transactions that may arise from the purchase or holding of our Notes. These exemptions include PTCE 84-14 (for certain transactions determined by independent qualified professional asset managers), PTCE 90-1 (for certain transactions involving insurance company pooled separate accounts), PTCE 91-38 (for certain transactions involving bank collective investment funds), PTCE 95-60 (for transactions involving certain insurance company general accounts), and PTCE 96-23 (for transactions managed by in-house asset managers). In addition, Section 408(b)(17) of ERISA and Section 4975(d)(20) of the Code provide an

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exemption for the purchase and sale of certain securities like our Notes, provided that neither we nor any of our affiliates (directly or indirectly) have or exercise any discretionary authority or control or render any investment advice with respect to the assets of the ERISA Plan involved in the transaction, and provided further that the ERISA Plan pays no more than, and receives no less than “adequate consideration” in connection with the transaction. There can be no assurance that all of the conditions of any such exemptions will be satisfied.

Because of the foregoing, our Notes should not be acquired or held by any person investing “plan assets” of any Plan, unless such acquisition and holding will not constitute (i) a non-exempt prohibited transaction under ERISA or Section 4975 of the Code or (ii) a similar violation of any applicable Similar Laws for which there is no applicable statutory, regulatory or administrative exemption.

Any purchaser, holder or subsequent transferee of our Notes or any interest therein will be deemed to have represented by its purchase and holding of our Notes or any interest therein that either (1) it is not a Plan, a Plan Asset Entity or a Non-ERISA Arrangement and is not purchasing our Notes on behalf of or with the assets of any Plan, Plan Asset Entity or Non-ERISA Arrangement or (2) the purchase and holding of our Notes will not constitute or result in a non-exempt prohibited transaction under ERISA or the Code or a similar violation under any applicable Similar Laws.

The foregoing discussion is general in nature and is not intended to be all-inclusive. Due to the complexity of these rules and the penalties that may be imposed upon persons involved in non-exempt prohibited transactions, it is important that fiduciaries or other persons considering purchasing our Notes on behalf of or with the assets of any Plan, Plan Asset Entity or Non-ERISA Arrangement consult with their counsel regarding the potential applicability of ERISA and Section 4975 of the Code and the availability of exemptive relief under any of the PTCEs described above, or the potential consequences of any purchase under Similar Laws, as applicable. The acquisition, holding and, to the extent relevant, disposition of our Notes by or to a Plan, Plan Asset Entity or Non-ERISA Arrangement is in no respect a representation by us or any of our affiliates or representatives that such an investment meets all relevant legal requirements with respect to investments by any such Plan, Plan Asset Entity or Non-ERISA Arrangement generally or any particular Plan, Plan Asset Entity or Non-ERISA Arrangement or that such investment is appropriate for any such Plan, Plan Asset Entity or Non-ERISA Arrangement generally or any particular Plan, Plan Asset Entity or Non-ERISA Arrangement.

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UNDERWRITING (CONFLICTS OF INTEREST)

We are offering the Notes described in this prospectus supplement through a number of underwriters. We have entered into an underwriting agreement with the underwriters listed below for whom Goldman Sachs & Co. LLC, Barclays Capital Inc, Credit Suisse Securities (USA) LLC, Regions Securities LLC and UBS Securities LLC are acting as representatives. Subject to the terms and conditions of the underwriting agreement, we have agreed to sell to the underwriters, and each underwriter has severally agreed to purchase, at the public offering price less the underwriting discounts and commissions set forth on the cover page of this prospectus supplement, the aggregate principal amount of Notes listed next to its name below:

The underwriting agreement provides that the underwriters are obligated to purchase all of the Notes if any are purchased.

The underwriters propose to offer the Notes initially at the public offering price on the cover page of this prospectus supplement and to selling group members at that price less a selling concession of 0.18% of the principal amount of the Notes. The underwriters and the selling group members may allow a discount of 0.10% of the principal amount of the Notes on sales to other brokers/dealers. After the initial offering of the Notes, the price to public and other selling terms may from time to time be varied by the underwriters. The offering of the Notes by the underwriters is subject to receipt and acceptance and subject to the underwriters’ right to reject any order in whole or in part.

The aggregate proceeds to us are set forth on the cover page of this prospectus supplement before deducting our expenses in offering the Notes and excluding accrued interest. We estimate that we will spend approximately $400,000 for expenses, excluding underwriting discounts, allocable to the offering.

We have agreed to indemnify the several underwriters against certain liabilities, including liabilities under the Securities Act of 1933, or to contribute to payments that the underwriters may be required to make in respect thereof.

The Original Notes are not listed on any securities exchange or included in any automated quotation system, and we do not intend to list the Notes on any securities exchange or include the Notes in any automated quotation system. We cannot assure you that the prices at which the Notes will sell in the market after this offering will not be lower than the initial offering price or that an active trading market for the Notes will develop and continue after this offering. One or more underwriters have indicated that they intend to make a secondary market for the Notes. However, they are not obligated to do so and may discontinue making a secondary market for the Notes at any time without notice. No assurance can be given as to how liquid the trading market for the Notes will be.

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In connection with the offering, the underwriters may engage in transactions that stabilize the market price of the Notes. Such transactions consist of bids or purchases to peg, fix or maintain the price of the Notes. If the underwriters create a short position in the Notes in connection with the offering, i.e., if they sell more Notes than are listed on the cover page of this prospectus supplement, the underwriters may reduce that short position by purchasing Notes in the open market. Purchases of a security to stabilize the price or to reduce a short position may cause the price of the security to be higher than it might be in the absence of these purchases.

The underwriters also may impose a penalty bid. This occurs when a particular underwriter repays to the underwriters a portion of the underwriting discount received by it because the representatives have repurchased notes sold by or for the account of such underwriter in stabilizing or short covering transactions.

Neither we nor the underwriters make any representation or prediction as to the direction or magnitude of any effect that the transactions described above may have on the price of the Notes. In addition, neither we nor the underwriters make any representation that the underwriters will engage in these transactions or that these transactions, once commenced, will not be discontinued without notice.

Other Relationships

The underwriters and their respective affiliates are full service financial institutions engaged in various activities, which may include securities trading, commercial and investment banking, financial advisory, investment management, investment research, principal investment, hedging, financing and brokerage activities. Certain of the underwriters and their respective affiliates have provided, and may in the future provide, a variety of these services to the issuer and to persons and entities with relationships with the issuer, for which they received or will receive customary fees and expenses. Certain of the underwriters participated in the August 13, 2018 issuance of the Original Notes as underwriters and received customary underwriting discounts and commissions in connection therewith.

In the ordinary course of their various business activities, the underwriters and their respective affiliates, officers, directors and employees may purchase, sell or hold a broad array of investments and actively trade securities, derivatives, loans, commodities, currencies, credit default swaps and other financial instruments for their own account and for the accounts of their customers, and such investment and trading activities may involve or relate to assets, securities and/or instruments of the issuer (directly, as collateral securing other obligations or otherwise) and/or persons and entities with relationships with the issuer. If any of the underwriters or their affiliates have a lending relationship with us, certain of those underwriters or their affiliates routinely hedge, and certain other of those underwriters may hedge, their credit exposure to us consistent with their customary risk management policies.

Typically, these underwriters and their affiliates would hedge such exposure by entering into transactions which consist of either the purchase of credit default swaps or the creation of short positions in our securities, including potentially the Notes offered hereby. The underwriters and their respective affiliates may also communicate independent investment recommendations, market color or trading ideas and/or publish or express independent research views in respect of such assets, securities or instruments and may at any time hold, or recommend.

Conflicts of Interest

Regions Securities LLC, our subsidiary, is participating in this offering of Notes as an underwriter. Accordingly, this offering is being conducted in compliance with the provisions of FINRA Rule 5121. Regions Securities LLC is not permitted to sell the Notes in this offering to an account over which it

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exercises discretionary authority without the prior specific written approval of the customer to which the account relates.

In the future, Regions Securities LLC or our other affiliates may repurchase and resell the Notes in market-making transactions, with resales being made at prices related to prevailing market prices at the time of the resale or at negotiated prices.

Selling Restrictions

Canada

The Notes may be sold in Canada only to purchasers purchasing, or deemed to be purchasing, as principal that are accredited investors, as defined in National Instrument 45-106 Prospectus Exemptions or subsection 73.3(1) of the Securities Act (Ontario), and are permitted clients, as defined in National Instrument 31-103 Registration Requirements, Exemptions and Ongoing Registrant Obligations. Any resale of the Notes must be made in accordance with an exemption from, or in a transaction not subject to, the prospectus requirements of applicable securities laws.

Securities legislation in certain provinces or territories of Canada may provide a purchaser with remedies for rescission or damages if this prospectus supplement and the accompanying prospectus (including any amendment thereto) contains a misrepresentation, provided that the remedies for rescission or damages are exercised by the purchaser within the time limit prescribed by the securities legislation of the purchaser’s province or territory. The purchaser should refer to any applicable provisions of the securities legislation of the purchaser’s province or territory for particulars of these rights or consult with a legal advisor.

Pursuant to section 3A.3 of National Instrument 33-105 Underwriting Conflicts (NI 33-105), the underwriters are not required to comply with the disclosure requirements of NI 33-105 regarding underwriter conflicts of interest in connection with this offering.

Prohibition of Sales to EEA Retail Investors

Each underwriter has represented, warranted and agreed that it has not offered, sold or otherwise made available and will not offer, sell or otherwise make available any Notes which are the subject of the offering contemplated by this prospectus supplement, to any retail investor in the EEA. For the purposes of this provision:

(a) the expression “retail investor” means a person who is one (or more) of the following:

(i) a retail client as defined in point (11) of Article 4(1) of MiFID II; or

(ii) a customer within the meaning of the Insurance Mediation Directive, where that customer would not qualify as a professional client as defined in point (10) of Article 4(1) of MiFID II; or

(iii) not a qualified investor as defined in the Prospectus Directive; and

(b) the expression “offer” includes the communication in any form and by any means of sufficient information on the terms of the offer and the Notes to be offered so as to enable an investor to decide to purchase or subscribe for the Notes.

United Kingdom

Each underwriter has represented, warranted and agreed that,

(a) it has only communicated or caused to be communicated and will only communicate or cause to be communicated an invitation or inducement to engage in investment activity (within the meaning of Section 21 of the FSMA) received by it in connection with the issue and sale of such Notes in circumstances in which Section 21(1) of the FSMA does not apply to us; and

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(b) it has complied and will comply with all applicable provisions of the FSMA with respect to anything done by it in relation to the Notes in, from or otherwise involving the United Kingdom.

Japan

The securities have not been and will not be registered under the Financial Instruments and Exchange Law of Japan. Each underwriter has represented and agreed that it has not offered or sold, and will not offer or sell, any securities, directly or indirectly, in Japan or to, or for the benefit of, any Japanese person or to others, for re-offering or resale, directly or indirectly, in Japan or to a Japanese person, except in each case pursuant to an exemption from the registration requirements of, and otherwise in compliance with, the Financial Instruments and Exchange Law of Japan and any other applicable laws and regulations of Japan. For purposes of this paragraph, “Japanese person” means any person resident in Japan, including any corporation or other entity organized under the laws of Japan.

Hong Kong

Each underwriter has represented and agreed that (a) it has not offered or sold and will not offer or sell in Hong Kong any Notes by means of any document other than (i) to “professional investors” within the meaning of the Securities and Futures Ordinance (Cap. 571) of Hong Kong (“SFO”) and any rules made thereunder or (ii) in other circumstances which do not result in the document being a “prospectus” within the meaning of the Companies (Winding up and Miscellaneous Provisions) Ordinance (Cap. 32) of Hong Kong, or which do not constitute an offer to the public within the meaning of that Ordinance and (b) it has not issued or had in its possession for the purposes of issue, and will not have in its possession for the purpose of issue, whether in Hong Kong or elsewhere, any advertisement, invitation or document relating to the Notes, which is directed at, or the contents of which are likely to be accessed or read by, the public of Hong Kong (except if permitted to do so under the securities laws of Hong Kong) other than with respect to Notes which are or are intended to be disposed of only to persons outside Hong Kong or only to “professional investors” within the meaning of the SFO and any rules made thereunder.

Singapore

This prospectus supplement and the accompanying prospectus has not been registered as a prospectus with the Monetary Authority of Singapore. Accordingly, this prospectus and any other document or material in connection with the offer or sale, or invitation for subscription or purchase, of the Notes may not be circulated or distributed, nor may the Notes be offered or sold, or be made the subject of an invitation for subscription or purchase, whether directly or indirectly, to persons in Singapore other than (i) to an institutional investor under Section 274 of the Securities and Futures Act, Chapter 289 of Singapore (the “SFA”), (ii) to a relevant person pursuant to Section 275(1), or any person pursuant to Section 275(1A), and in accordance with the conditions specified in Section 275 of the SFA or (iii) otherwise pursuant to, and in accordance with the conditions of, any other applicable provision of the SFA.

Where the Notes are subscribed or purchased under Section 275 of the SFA by a relevant person which is:

(a) a corporation (which is not an accredited investor (as defined in Section 4A of the SFA)) the sole business of which is to hold investments and the entire share capital of which is owned by one or more individuals, each of whom is an accredited investor; or

(b) a trust (where the trustee is not an accredited investor) whose sole purpose is to hold investments and each beneficiary of the trust is an individual who is an accredited investor,

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securities (as defined in Section 239(1) of the SFA) of that corporation or the beneficiaries’ rights and interest (howsoever described) in that trust shall not be transferred within six months after that corporation or that trust has acquired the Notes pursuant to an offer made under Section 275 of the SFA except:

(1) to an institutional investor or to a relevant person defined in Section 275(2) of the SFA, or to any person arising from an offer referred to in Section 275(1A) or Section 276(4)(i)(B) of the SFA;

(2) where no consideration is or will be given for the transfer;

(3) where the transfer is by operation of law;

(4) as specified in Section 276(7) of the SFA; or

(5) as specified in Regulation 32 of the Securities and Futures (Offers of Investments) (Shares and Debentures) Regulations 2005 of Singapore.

Singapore SFA Product Classification—In connection with Section 309B of the SFA and the CMP Regulations 2018, the Issuer has determined, and hereby notifies all relevant persons (as defined in the CMP Regulations 2018), that the Notes are “prescribed capital markets products” (as defined in the CMP Regulations 2018) and Excluded Investment Products (as defined in MAS Notice SFA 04-N12: Notice on the Sale of Investment Products and MAS Notice FAA-N16: Notice on Recommendations on Investment Products).

Switzerland

The Notes may not be publicly offered in Switzerland and will not be listed on the SIX Swiss Exchange or on any other stock exchange or regulated trading facility in Switzerland. This document does not constitute a prospectus within the meaning of, and has been prepared without regard to the disclosure standards for issue prospectuses under art. 652a or art. 1156 of the Swiss Code of Obligations or the disclosure standards for listing prospectuses under art. 27 ff. of the SIX Swiss Exchange Listing Rules or the listing rules of any other stock exchange or regulated trading facility in Switzerland. Neither this document nor any other offering or marketing material relating to the Notes or the offering may be publicly distributed or otherwise made publicly available in Switzerland.

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VALIDITY OF THE NOTES

The validity of the Notes offered hereby will be passed upon for us by Sullivan & Cromwell LLP, New York, New York, and certain legal matters will be passed upon on behalf of Regions by Hope D. Mehlman, our Chief Governance Officer. Ms. Mehlman beneficially owns shares of our common stock and options to acquire additional shares of our common stock. The validity of the Notes offered hereby will be passed upon for the underwriters by Cleary Gottlieb Steen & Hamilton LLP, New York, New York. Sullivan & Cromwell LLP has performed, and may in the future perform, legal services for us and our affiliates.

EXPERTS

The consolidated financial statements of Regions Financial Corporation appearing in Regions Financial Corporation’s Annual Report (Form 10-K) for the year ended December 31, 2017, and the effectiveness of Regions Financial Corporation’s internal control over financial reporting as of December 31, 2017, have been audited by Ernst & Young LLP, independent registered public accounting firm, as set forth in their reports thereon, included therein, and incorporated herein by reference. Such consolidated financial statements are incorporated herein by reference in reliance upon such reports given on the authority of such firm as experts in accounting and auditing.

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PROSPECTUS

REGIONS FINANCIAL CORPORATION

Senior Debt Securities

Subordinated Debt Securities

Preferred Stock

Depositary Shares

Common Stock

Warrants

Stock Purchase Contracts

Units

The securities listed above may be offered by us and/or may be offered and sold, from time to time, by one or more selling securityholders to be identified in the future. We will provide the specific terms of these securities in supplements to this prospectus. You should read this prospectus and the applicable prospectus supplement carefully before you invest in the securities described in the applicable prospectus supplement. Our common stock, depositary shares representing a 1/40th interest in a share of our 6.375% Non-Cumulative Perpetual Preferred Stock, Series A and depositary shares representing a 1/40th interest in a share of our 6.375% Non-Cumulative Perpetual Preferred Stock, Series B, are listed on The New York Stock Exchange and trade under the ticker symbols “RF”, “RFPrA” and “RFPrB”, respectively.

We may offer and sell these securities to or through one or more underwriters, dealers and agents, directly to purchasers or through a combination of these methods, on a continuous or delayed basis from time to time.

This prospectus may not be used to sell securities unless accompanied by the applicable prospectus supplement.

These securities will be our equity securities or unsecured obligations and are not savings accounts, deposits or other obligations of any bank or savings association and will not be insured by the Federal Deposit Insurance Corporation or any other governmental agency or instrumentality.

Investing in the securities involves certain risks. See “Risk Factors” beginning on page 2 of this prospectus and contained in our annual report on Form 10-K for the year ended December 31, 2015, which is incorporated herein by reference, as well as any risk factors included in, or incorporated by reference into, the applicable prospectus supplement, to read about factors you should consider before buying any securities issued by us.

Neither the Securities and Exchange Commission, any state securities commission, the Federal Deposit Insurance Corporation, the Board of Governors of the Federal Reserve System nor any other regulatory body has approved or disapproved of these securities or determined if this prospectus is accurate or complete. Any representation to the contrary is a criminal offense.

Prospectus dated February 23, 2016

TABLE OF CONTENTS

Unless the context requires otherwise, references to “we,” “us,” “our,” “Regions” or similar terms are to Regions Financial Corporation and its subsidiaries.

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ABOUT THIS PROSPECTUS

This prospectus is part of a registration statement that we filed with the Securities and Exchange Commission (“SEC”) using a “shelf” registration process. Under this shelf registration statement, we may offer and sell from time to time any combination of senior debt securities, subordinated debt securities, preferred stock, depositary shares, common stock, warrants, stock purchase contracts and units in one or more offerings up to an indeterminate total dollar amount. The debt securities, preferred stock, warrants, stock purchase contracts and units may be convertible into or exercisable or exchangeable for common or preferred stock or other securities issued by us or debt or equity securities issued by one or more other entities.

Each time we offer and sell securities, we will provide a prospectus supplement that will contain specific information about the terms of that offering. The prospectus supplement may also add, update or change information contained in this prospectus. You should read this prospectus and the applicable prospectus supplement together with the additional information described under the heading “Where You Can Find More Information.” We may also prepare free writing prospectuses that describe particular securities. Any free writing prospectus should also be read in connection with this prospectus and with any prospectus supplement referred to therein. For purposes of this prospectus, any reference to an applicable prospectus supplement may also refer to a free writing prospectus, unless the context otherwise requires.

The registration statement that contains this prospectus, including the exhibits to the registration statement, contains additional information about us and the securities offered under this prospectus. The registration statement can be read at the SEC web site or at the SEC offices mentioned under the heading “Where You Can Find More Information.”

The distribution of this prospectus and any applicable prospectus supplement and the offering of the securities in certain jurisdictions may be restricted by law. Persons into whose possession this prospectus and any applicable prospectus supplement come should inform themselves about and observe any such restrictions. This prospectus and any applicable prospectus supplement do not constitute, and may not be used in connection with, an offer or solicitation by anyone in any jurisdiction in which such offer or solicitation is not authorized or in which the person making such offer or solicitation is not qualified to do so or to any person to whom it is unlawful to make such offer or solicitation.

WHERE YOU CAN FIND MORE INFORMATION

We file annual, quarterly and current reports, proxy statements and other information with the SEC. Our SEC filings are available to the public at the SEC’s web site at http://www.sec.gov. You may also read and copy any document we file at the SEC’s public reference room at 100 F Street, NE, Washington, D.C. 20549. Please call the SEC at 1-800-SEC-0330 for further information on the public reference room. Our SEC filings are also available at the offices of the New York Stock Exchange. For further information on obtaining copies of our public filings at the New York Stock Exchange, you should call 212-656-5060.

The SEC allows us to “incorporate by reference” into this prospectus the information in documents we file with the SEC, which means that we can disclose important information to you by referring you to those documents. The information incorporated by reference is considered to be a part of this prospectus and should be read with the same care. When we update the information contained in documents that have been incorporated by reference, by making future filings with the SEC, the information incorporated by reference in this prospectus is considered to be automatically updated and superseded. In other words, in all cases, if you are considering whether to rely on information contained in this prospectus or information incorporated by reference into this prospectus, you should rely on the information contained in the document that was filed later. We incorporate by reference the documents listed below and any additional documents we file with the SEC in the future under Sections 13(a), 13(c), 14, or 15(d) of the Securities Exchange Act of 1934 (the “Exchange Act”) until our offering is completed (other than information in such additional documents that are deemed, under the Exchange Act, in accordance with the Exchange Act and SEC rules, not to have been filed):

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You may request a copy of these filings (other than an exhibit to a filing unless that exhibit is specifically incorporated by reference into that filing) at no cost, by writing to or telephoning us at the following address:

Regions Financial Corporation

Investor Relations

1900 Fifth Avenue North,

Birmingham, Alabama 35203

(205) 581-7890

You should rely only on the information contained or incorporated by reference in this prospectus and the applicable prospectus supplement. Neither we nor any underwriter or agent have authorized anyone else to provide you with additional or different information. We may only use this prospectus to sell securities if it is accompanied by a prospectus supplement. We are only offering these securities in jurisdictions where the offer is permitted. You should not assume that the information in this prospectus or the applicable prospectus supplement or any document incorporated by reference is accurate as of any date other than the dates of the applicable documents.

THE COMPANY

Regions Financial Corporation is a Delaware corporation (NYSE symbol: RF) and financial holding company headquartered in Birmingham, Alabama, which operates throughout the South, Midwest and Texas. Regions is a member of the S&P 500 Index and is one of the nation’s largest full-service providers of consumer and commercial banking, wealth management, mortgage and insurance products and services. Through its subsidiary, Regions Bank, Regions operates 1,627 banking offices and 1,962 ATMs (as of December 31, 2015). At December 31, 2015, Regions had total consolidated assets of approximately $126.1 billion, total consolidated deposits of approximately $98.4 billion and total consolidated stockholders’ equity of approximately $16.8 billion. Additional information about us and our subsidiaries is included in the documents incorporated by reference in this prospectus under the heading “Where You Can Find More Information.”

Regions is a separate and distinct legal entity from our banking and other subsidiaries. A significant source of funds to pay dividends on our common and preferred stock and service our debt is dividends from our subsidiaries. Various federal and state statutes and regulations limit the amount of dividends that our banking and other subsidiaries may pay to us without regulatory approval.

Our principal executive offices are located at 1900 Fifth Avenue North, Birmingham, Alabama 35203, and our telephone number at that address is (205)  581-7890.

RISK FACTORS

Investing in securities issued by us involves certain risks. Before you invest in any securities issued by us, in addition to the other information included in, or incorporated by reference into, this prospectus, you should carefully consider the risk factors contained in Item 1A under the caption “Risk Factors” and elsewhere in our annual report on Form 10-K for the fiscal year ended December 31, 2015, which is incorporated into this prospectus by reference, as updated by our annual or quarterly reports for subsequent fiscal years or fiscal quarters that we file with the SEC and that are so incorporated. See “Where You Can Find More Information” for information about how to obtain a copy of these documents. You should also carefully consider the risks and other information that may be contained in, or incorporated by reference into, any prospectus supplement relating to specific offerings of securities.

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CONSOLIDATED EARNINGS RATIOS

Our consolidated ratio of earnings to fixed charges (from continuing operations) and earnings to fixed charges and preferred stock dividends for each of the five fiscal years ended December 31, 2015, 2014, 2013, 2012 and 2011 are as follows:

USE OF PROCEEDS

We intend to use the net proceeds from the sales of the securities in the manner and for the purposes set forth in the applicable prospectus supplement, which may include general corporate purposes.

VALIDITY OF THE SECURITIES

Unless otherwise indicated in the applicable prospectus supplement, the validity of the securities may be passed upon for us by Hope D. Mehlman, our Assistant General Counsel, or such other legal officer as we may designate from time to time, and Sullivan & Cromwell LLP, New York, New York. Ms. Mehlman beneficially owns shares of our common stock and options to acquire additional shares of our common stock, and Sullivan & Cromwell LLP regularly performs legal services for us. Certain legal matters will be passed upon for any underwriters by the counsel to such underwriters specified in the applicable prospectus supplement.

EXPERTS

The consolidated financial statements of Regions Financial Corporation appearing in Regions Financial Corporation’s Annual Report (Form 10-K) for the year ended December 31, 2015, and the effectiveness of Regions Financial Corporation’s internal control over financial reporting as of December 31, 2015, have been audited by Ernst & Young LLP, independent registered public accounting firm, as set forth in their reports thereon, included therein, and incorporated herein by reference. Such consolidated financial statements are incorporated herein by reference in reliance upon such reports given on the authority of such firm as experts in accounting and auditing.

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$500,000,000 3.800% Senior Notes due 2023

January 23, 2019

Goldman Sachs & Co. LLC

Barclays

Credit Suisse

Regions Securities LLC

UBS Investment Bank

Deutsche Bank Securities

Academy Securities, Inc.

Ramirez & Co., Inc.