Entergy Texas Inc Series A Pfd美国存托凭证招股说明书（2026年5月11日版）

Entergy Texas, Inc.FIRST MORTGAGE BONDS,% SERIES DUE, 20 million of our First Mortgage Bonds,% Series due, 20, referred to in this prospectus supplement as the We are offering $“bonds.” We will pay interest on the bonds semi-annually in arrears on andof each year. The first interest payment on the bonds will The bonds will be redeemable at our option, in whole or in part, (i)at any time prior to, 20, at the make-whole redemption pricedescribed in this prospectus supplement, and (ii)at any time on or after, 20, prior to maturity of the bonds, at a redemption price equal to100% of the principal amount of the bonds being redeemed, plus, in each case, any accrued and unpaid interest thereon to, but not including, theredemption date. The bonds will also be redeemable, in whole but not in part, at our option, upon a notice of redemption, at 101% of the principalamount thereof, plus any accrued and unpaid interest thereon to, but not including, the redemption date if a Tax Credit Event (as described under As described in the accompanying prospectus, the bonds are a series of first mortgage bonds issued under our indenture, deed of trust andsecurity agreement, which has the benefit of a first mortgage lien on substantially all of our tangible electric utility property in Texas, our franchises,permits and licenses that are transferable and necessary for the operation of such property and our recorded easements and rights of way. The bonds will constitute a new class of securities with no established trading market. We do not intend to apply for listing of the bonds onany securities exchange or for inclusion of the bonds on any automated quotation system. Investing in the bonds involves risks. See “Risk Factors” on page S-1 of this prospectus supplement. Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securitiesor determined if this prospectus supplement or the accompanying prospectus is truthful or complete. Any representation to the contrary is Total This preliminary prospectus supplement and the accompanying prospectus relate to an effective registration statement under theSecurities Act of 1933, but are not complete and may be changed.This prospectus supplement and the accompanying prospectus are not intended to constitute an offer to, and the bonds should not bepurchased, held or otherwise acquired by, a “specified foreign entity” as defined in Section7701(a)(51)(B) of the Internal Revenue Code of1986, as amended (an “SFE”). By purchasing bonds, any investor in the bonds (including all affiliated entities that participate in such The underwriters expect to deliver the bonds to purchasers through the book-entry facilities of The Depository Trust Company in New York,New York, on or about May, 2026. BNPPARIBASBNYCapitalMarketsKeyBancCapitalMarkets MUFGRegionsSecuritiesLLC Co-Manager R. Seelaus & Co., LLC Table of Contents This prospectus supplement, the accompanying prospectus and any related free writing prospectus that we file with the Securities and ExchangeCommission, or SEC, contain and incorporate by reference information that you should consider when making your investment decision. We have not,and the underwriters have not, authorized anyone else to provide you with different information. You should not assume that the information containedin this prospectus supplement, the accompanying prospectus or the documents incorporated by reference herein or therein is accurate as of any dateother than as of the dates of these documents or the dates these documents were filed with the SEC. Our business, financial condition, results of In this prospectus supplement, “Entergy Texas,” “we,” “us” and “our” refer to Entergy Texas, Inc. TABLE OF CONTENTS Prospectus Supplement PageS-1S-1S-3 Risk Factors Where You Can Find More InformationUse of ProceedsDescription of the BondsUnderwriting (Conflicts of Interest)Experts Prospectus RISK FACTORSABOUT THIS PROSPECTUSENTERGY TEXAS, INC.WHERE YOU CAN FIND MORE INFORMATIONUSE OF PROCEEDSDESCRIPTION OF THE NEW BONDSPLAN OF DISTRIBUTIONEXPERTSLEGALITY Table of Contents RISK FACTORS Investing in the bonds involves certain risks. In considering whether to purchase the bonds, you should carefully consider the information we haveincluded or incorporated by reference in this prospectus supplement and the accompanying prospectus. In particular, you should carefully consider theinformation under the headings “Risk Factors Summary” and “Risk Factors,” as well as the factors listed under the heading “Forward-LookingInformation,” in each case, contained in our Annual Report on Form 10-K for the year ended December31, 2025 (the “2025 Form 10-K”) and our In addition, you should consider the following risk factor relating to the bonds: We may redeem the bonds if a Tax Credit Event occurs. We may redeem the bonds at our option at any time, upon a notice of redemption, in whole, but not in part,