安飞士美股招股说明书(2026-03-27版)

5,000,000 Shares of Common Stock We have entered into an equity distribution agreement (the “equity distribution agreement”) with Barclays Capital Inc., BofA Securities, Inc., BNPParibas Securities Corp., Credit Agricole Securities (USA) Inc., J.P. Morgan Securities LLC, Morgan Stanley & Co. LLC, RBC Capital Markets, LLC,Scotia Capital (USA) Inc., SG Americas Securities, LLC, Truist Securities, Inc. and Wells Fargo Securities, LLC (each, a “sales agent” and collectively,the “sales agents”), relating to our shares of common stock, par value $0.01 per share (the “common stock”), offered by this prospectus supplement andthe accompanying prospectus. In accordance with the terms of the equity distribution agreement, we may offer and sell up to 5,000,000 shares of ourcommon stock from time to time through the sales agents pursuant to this prospectus supplement and the accompanying prospectus. Our common stock is listed on The Nasdaq Global Select Market (“Nasdaq”) under the symbol “CAR.” Sales of shares of our common stock, if any, under this prospectus supplement and the accompanying prospectus may be made in transactions thatare deemed to be an “at the market offering” as defined in Rule415(a)(4) under the Securities Act of 1933, as amended (the “Securities Act”), includingsales made directly on or through Nasdaq or any other existing trading market for our common stock. None of the sales agents are required to sell anyspecific number or dollar amount of shares of our common stock, but will make all sales using commercially reasonable efforts consistent with theirnormal trading and sales practices, on mutually agreed terms between the sales agents and us. Each of the sales agents will be entitled to compensation of up to 2.00% of the gross sales price for any shares of common stock sold through it asa sales agent under the equity distribution agreement, as further described in the “Plan of Distribution” section. In connection with the sale of shares ofcommon stock on our behalf, each sales agent may be deemed to be an “underwriter” within the meaning of the Securities Act, and the compensation ofeach sales agent may be deemed to be underwriting commissions or discounts. Investing in our common stock involves risks. See “Risk Factors” in this prospectus supplement on pageS-4 and inour Annual Report on Form 10-K for the year ended December31, 2025, which is incorporated by reference herein, aswell as in any future filings we make from time to time with the U.S. Securities and Exchange Commission (the “SEC”). Neither the SEC, nor any state securities commission has approved or disapproved of these securities or passed upon the adequacy oraccuracy of this prospectus. Any representation to the contrary is a criminal offense. BofASecuritiesRBCCapitalMarkets CreditAgricoleCIB Scotiabank Truist Securities SocieteGenerale Table of Contents TABLE OF CONTENTS PROSPECTUS SUPPLEMENT ABOUT THIS PROSPECTUS SUPPLEMENTINCORPORATION OF CERTAIN INFORMATION BY REFERENCEFORWARD-LOOKING STATEMENTSSUMMARYTHE OFFERINGRISK FACTORSUSE OF PROCEEDSMATERIAL U.S. FEDERAL INCOME TAX CONSIDERATIONS FOR NON-U.S. HOLDERSCERTAIN ERISA CONSIDERATIONSPLAN OF DISTRIBUTIONLEGAL MATTERSEXPERTSWHERE YOU CAN FIND MORE INFORMATION Prospectus SUMMARYWHERE YOU CAN FIND MORE INFORMATIONFORWARD-LOOKING STATEMENTSRISK FACTORSUSE OF PROCEEDSDESCRIPTION OF CAPITAL STOCKPLAN OF DISTRIBUTION LEGAL MATTERSEXPERTS Table of Contents ABOUT THIS PROSPECTUS SUPPLEMENT This prospectus supplement and the accompanying prospectus form part of a registration statement on FormS-3 that we originally filed with theSEC on March27, 2026, using a “shelf” registration process. This document consists of two parts. The first part is this prospectus supplement, whichdescribes the specific terms of this offering. The second part is the accompanying prospectus, which contains more general information. You should readboth this prospectus supplement and the accompanying prospectus, together with additional information described below under the caption “Where YouCan Find More Information.” If the description of the offering varies between this prospectus supplement and the accompanying prospectus, you should rely upon theinformation in this prospectus supplement. Any statement made in this prospectus supplement or in a document incorporated or deemed to beincorporated by reference in this prospectus supplement will be deemed to be modified or superseded for purposes of this prospectus supplement to theextent that a statement contained in this prospectus supplement or in any other subsequently filed document that is also incorporated or deemed to beincorporated by reference in this prospectus supplement modifies or supersedes that statement. Any statement so modified or superseded will not bedeemed, except as so modified or superseded, to constitute a part of this prospectus supplement. We are responsible for the information contained in or incorporated by reference