Marex Group plc美股招股说明书(2026-07-09版)

The information in this preliminary pricing supplement is not complete and may be changed. This preliminary pricingsupplement and the accompanying underlying supplement, prospectus supplement and prospectus are not an offerto sell these securities and we are not soliciting an offer to buy these securities in any jurisdiction where the offer orsale is not permitted. Subject to Completion, Dated July9, 2026Pricing Supplement dated, 2026 (To Equity Index Underlying Supplement dated July6, 2026, Prospectus Supplement dated July6, 2026, and Prospectusdated July6, 2026) Marex Group LimitedAutocallable Leveraged Barrier Notes Linked to the Worst Performing of the S&P 500® $Index and the Nasdaq-100 Index®due August2, 2029 ►Callable at the Principal Amount plus the Call premium of at least 14.00% (to be determined on the Trade Date) of thePrincipal Amount if the Closing Level of each of the S&P 500®Index and the Nasdaq-100 Index®(each, an “Underlying”and together, the “Underlyings”) on the Call Observation Date on August6, 2027 is at or above its Call Threshold (100%of its Initial Value) ►If the Notes are not called, at maturity: o1.5x upside exposure to any increases in the value of the Worst Performing UnderlyingoReturn of principal if the value of the Worst Performing Underlying does not change or decreases by no more than30%o1-to-1 downside exposure to any decrease in the value of the Worst Performing Underlying if its Reference Return isless than -30%, and in such a case, you will lose more than 30%, and possibly all, of your Principal Amount ►Term: Approximately 3 years, if not called ►All payments on the Notes are subject to the credit risk of Marex Group Limited (“Marex”) Application has been made for the Autocallable Leveraged Barrier Notes (the “Notes”) offered hereunder to be admitted tolisting and trading on the Vienna Multilateral Trading Facility (“Vienna MTF”) of the Vienna Stock Exchange. The Vienna MTFis not a regulated market as defined by Directive 2014/65/EU (as amended, “MiFID II”). It is, however, a multilateral tradingfacility (MTF) for purposes of MiFID II. Neither the U.S. Securities and Exchange Commission (the “SEC”) nor any state securities commission has approved ordisapproved of the Notes or passed upon the accuracy or the adequacy of this document or the accompanying prospectus,prospectus supplement or underlying supplement. Any representation to the contrary is a criminal offense. Any offering of the Notes will be made pursuant to Article1(4)of Regulation (EU) 2017/1129 (as amended), including as itforms part of domestic law of the United Kingdom. Accordingly, no prospectus is required to be published in connection withsuch offering of the Notes in any member state of the European Economic Area (the "EEA") or the United Kingdom (the "UK").See pageii of the accompanying prospectus supplement for further restrictions on offers and sales of the Notes in the EEAand the UK. Investment in the Notes involves certain risks. You should refer to “Risk Factors” beginning on pagePS-7 of thisdocument, pageS-1 of the accompanying prospectus supplement and pageS-1 of the accompanying underlyingsupplement. The Estimated Initial Value of the Notes on the Pricing Date is expected to be between $940.00 and $990.00 per Note, whichwill be less than the price to public. The market value of the Notes at any time will reflect many factors and cannot bepredicted with accuracy. See “Summary—Estimated Initial Value” beginning on pagePS-3 and “Risk Factors” beginning onpagePS-7 of this document for additional information. (1)Marex Capital Markets Inc. (“MCMI”), an affiliate of ours, will act as the agent for the sale of the Notes. MCMI willpurchase the Notes from us at an underwriting discount of up to $5.00 per $1,000 Principal Amount for distribution toother registered broker-dealers or will offer the Notes directly to investors. MCMI will use the underwriting discount to payselling concessions or fees(including custodial or clearing fees)to other registered broker-dealers.See“Supplemental Plan of Distribution (Conflicts of Interest)” on pagePS-13 of this document. SUMMARY The information in this “Summary” section is qualified by the more detailed information set forth in the underlying supplement,the prospectus supplement and the prospectus. See “General” in this document. The worst performing of the S&P 500®Index (Bloomberg symbol: SPX) (the “SPX”)and theNasdaq-100 Index®(Bloomberg symbol: NDX) (the “NDX”) Trade Date:Pricing Date:Original Issue Date:Final Valuation Date: July30, 2026 July30, 2026 August4, 2026 July30, 2029, subject to adjustment as described under “Additional Terms of the Notes―ValuationDates” in the accompanying underlying supplement. August2, 2029, subject to adjustment as described under “Additional Terms of the Notes―InterestPaymentDates,Coupon Payment Dates,Call Payment Dates and Maturity Date”in theaccompanying underlying supplement. Maturity Date: If the Clo