Marex Group Ltd美股招股说明书(2026-07-14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 offer to sell thesesecurities and we are not soliciting an offer to buy these securities in any jurisdiction where the offer or sale is not permitted. Subject to Completion, Dated July14, 2026Pricing Supplement dated, 2026(To Stock-Linked Underlying Supplement dated July6, 2026,Prospectus Supplement dated July6, 2026, and Prospectus dated July6, 2026) Marex Group Limited$Autocallable Fixed Income Buffered Notes Linked to the ClassA Common Stock of Space Exploration Technologies Corp. due May5, 2027 ►Monthly fixed Interest Payments at a rate of at least 1.804% (equivalent to at least 21.648% per annum, to be determined on theTrade Date) until maturity or automatic call, regardless of the performance of the ClassA common stock of Space ExplorationTechnologies Corp. (the “Reference Asset”) ►Callable monthly at the Principal Amount plus the applicable Interest Payment if the Closing Price of the Reference Asset onany Call Observation Date on or after November2, 2026 is at or above the Initial Value Return of the Principal Amount if the Notes are not called and the Reference Asset does not decline by more than 35.00% ►Approximately 1.5385-to-1 downside exposure to any decrease in the Reference Asset beyond a 35.00% decline, with up to100% of the principal at risk . Term: Approximately 9 months, 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 Fixed Income Buffered Notes (the “Notes”) offered hereunder to be admitted to listingand trading on the Vienna Multilateral Trading Facility (“Vienna MTF”) of the Vienna Stock Exchange. The Vienna MTF is not aregulated market as defined by Directive 2014/65/EU (as amended, “MiFID II”). It is, however, a multilateral trading facility (MTF)for purposes of MiFID II. Neither the U.S. Securities and Exchange Commission (the “SEC”) nor any state securities commission has approved or disapprovedof the Notes or passed upon the accuracy or the adequacy of this document or the accompanying prospectus, prospectus supplement orunderlying 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 it forms partof domestic law of the United Kingdom.Accordingly, no prospectus is required to be published in connection with such offering ofthe Notes in any member state of the European Economic Area (the "EEA") or the United Kingdom (the "UK"). See pageii of theaccompanying prospectus supplement for further restrictions on offers and sales of the Notes in the EEA and the UK. Investment in the Notes involves certain risks. You should refer to “Risk Factors” beginning on pagePS-7 of this document,pageS-1 of the accompanying prospectus supplement and pageS-1 of the accompanying underlying supplement. The Estimated Initial Value of the Notes on the Trade Date is expected to be between $927.50 and $987.50 per Note, which will beless than the price to public. The market value of the Notes at any time will reflect many factors and cannot be predicted withaccuracy. See “Estimated Initial Value” on pagePS-3 and “Risk Factors” beginning on pagePS-7 of this document for additionalinformation. (1)Marex Capital Markets Inc. (“MCMI”), an affiliate of ours, will act as the agent for the sale of the Notes. MCMI will purchase theNotes from us at an underwriting discount of up to $2.50 per $1,000 Principal Amount for distribution to other registered broker-dealers or will offer the Notes directly to investors. MCMI will use the underwriting discount to pay selling concessions or fees (including custodial or clearing fees) to other registered broker-dealers. See “Supplemental Plan of Distribution (Conflicts of Interest)”on pagePS-14 of this document. SUMMARY The information in this “Summary” section is qualified by the more detailed information set forth in the underlying supplement, theprospectus supplement and the prospectus. See “General” in this document. Issuer:MinimumDenominations:Principal Amount:Reference Asset: Marex Group Limited The Notes are offered at a minimum investment of $50,000 in denominations of $1,000 and integralmultiples thereof. $1,000 per Note The ClassA common stock of Space Exploration Technologies Corp. (Bloomberg ticker: SPCX) (the“SPCX”). Pricing Date:Trade Date:Original Issue Date:Final Valuation Date: July31, 2026 July31, 2026 August5, 2026 April30, 2027, subject to adjustment as described under “Additional Terms of the Notes—ValuationDates” in the accompanying underlying supplement. May5, 2027, subject to adjustment as described under “Additional Terms of the Notes—InterestPayment Dates, Coupon Payment Dates,