加拿大帝国商业银行美股招股说明书(2026-08-13版)

Subject to Completion, Dated August 13, 2026Pricing Supplement dated, 2026 (To Equity Index Underlying Supplement dated June 4, 2026, Prospectus Supplement dated June 4, 2026, andProspectus dated June 4, 2026)Canadian Imperial Bank of Commerce ●The Fixed Interest Autocallable Buffered Notes (the “notes”) will provide semi-annual fixed Interest Payments of at least $32.00per $1,000 principal amount (or at least 3.20% of the principal amount, equivalent to at least 6.40% per annum, to be determinedon the Trade Date) regardless of the performance of the S&P 500®Index (the “Index”) until the earlier of maturity or automaticcall.●If the Closing Level of the Index on any semi-annual Call Observation Date beginning on August 31, 2027 is greater than or equal to the Initial Level, we will automatically call the notes and pay you on the applicable Call Payment Date the principalamount plus the applicable Interest Payment. No further amounts will be owed to you.●If the notes have not been previously called, in addition to the final Interest Payment, the Payment at Maturity will depend on the Closing Level of the Index on the Final Valuation Date (the “Final Level”) and will be calculated as follows:a.If the Final Level is greater than or equal to the Buffer Level (80% of the Initial Level): the principal amount. b.If the Final Level is less than the Buffer Level: principal amount + [principal amount × (Percentage Change + 20%) ×125%]. In this case, you will lose 1.25% of the principal amount for each 1.00% decrease in the level of the Index bymore than 20%. Even with the Interest Payments, the return on the notes could be negative.●The notes will not be listed on any securities exchange. ●The notes will be issued in minimum denomination of $1,000 and integral multiples of $1,000 in excess thereof. The notes are unsecured obligations of the Bank and any payments on the notes are subject to the credit risk of the Bank.The notes will not constitute deposits insured by the Canada Deposit Insurance Corporation, the U.S. Federal DepositInsurance Corporation, or any other government agency or instrumentality of Canada, the United States or any otherjurisdiction. The notes are not bail-inable debt securities (as defined on page 6 of the prospectus). Neither the Securities and Exchange Commission (the “SEC”) nor any state or provincial securities commission hasapproved or disapproved of these notes or determined if this pricing supplement or the accompanying underlyingsupplement, prospectus supplement or prospectus is truthful or complete. Any representation to the contrary is a criminaloffense. Investing in the notes involves risks not associated with an investment in ordinary debt securities. See “Additional RiskFactors” beginning on page PS-7 of this pricing supplement, and “Risk Factors” beginning on page S-1 of theaccompanying underlying supplement, page S-1 of the prospectus supplement and page 1 of the prospectus. (1)CIBC World Markets Corp. (“CIBCWM”), acting as agent for the Bank, will not receive any underwriting discount inconnection with the distribution of the notes. See “Supplemental Plan of Distribution (Conflicts of Interest)” on page PS-14 of thispricing supplement. The initial estimated value of the notes on the Trade Date as determined by the Bank is expected to be at least $968.70 per $1,000principal amount of the notes, which is expected to be less than the price to public. See “The Bank’s Estimated Value of theNotes” in this pricing supplement. We will deliver the notes in book-entry form through the facilities of The Depository Trust Company (“DTC”) on or aboutSeptember 3, 2026 against payment in immediately available funds. You should read this pricing supplement together with the prospectus dated June 4, 2026 (the “prospectus”), theprospectus supplement dated June 4, 2026 (the “prospectus supplement”) and the Equity Index UnderlyingSupplement dated June 4, 2026 (the “underlying supplement”). Information in this pricing supplement supersedesinformation in the underlying supplement, the prospectus supplement and the prospectus to the extent it is differentfrom that information. Certain terms used but not defined herein will have the meanings set forth in the underlyingsupplement, the prospectus supplement or the prospectus. You should rely only on the information contained in or incorporated by reference in this pricing supplement and theaccompanying underlying supplement, the prospectus supplement and the prospectus. This pricing supplement maybe used only for the purpose for which it has been prepared. No one is authorized to give information other than thatcontained in this pricing supplement and the accompanying underlying supplement, the prospectus supplement andthe prospectus, and in the documents referred to in those documents and which are made available to the public. We,CIBCWM and our other affiliates have not authorized any other person to provide you with different or additiona