加拿大帝国商业银行美股招股说明书(2026-08-03版)

The information in this preliminary pricing supplement is not complete and may be changed. This preliminary pricing supplement and the accompanyingproduct supplement, underlying supplement, prospectus supplement and prospectus are not an offer to sell these securities and we are not soliciting an offer tobuy these securities in any jurisdiction where the offer or sale is not permitted. Subject to Completion, Dated August 3, 2026PRICING SUPPLEMENT dated, 2026 (ToProduct Supplement No. WF-1 dated June 4, 2026, Stock-Linked Underlying Supplement dated June 4, 2026,Prospectus Supplement dated June 4, 2026 and Prospectus dated June 4, 2026)Canadian Imperial Bank of Commerce Senior Global Medium-Term Notes Market Linked Securities—Auto-Callable with Contingent Coupon with Memory Featureand Contingent Downside Principal at Risk Securities Linked to the Lowest Performing of the Common Stock of Amazon.com, Inc., the Class ACommon Stock of Alphabet Inc., and the Class A Common Stock of Meta Platforms, Inc. due August 22, 2029 Linked to thelowest performingof the common stock of Amazon.com, Inc., the Class A common stock of Alphabet Inc., and the Class A common stock of MetaPlatforms, Inc. (each, an “Underlying Stock”) Unlike ordinary debt securities, the securities do not provide for fixed payments of interest, do not repay a fixed amount of principal at maturity and are subject topotential automatic call prior to maturity upon the terms described below. Whether the securities pay a Contingent Coupon Payment, whether the securities areautomatically called prior to maturity and, if they are not automatically called, whether you receive the face amount of your securities at maturity will depend, ineach case, on the Stock Closing Price of the Lowest Performing Stock on the relevant Calculation Day. The Lowest Performing Stock on any Calculation Day is theUnderlying Stock that has the lowest Stock Closing Price on that Calculation Dayas a percentage of its Starting Price Contingent Coupon Payments. The securities will pay a Contingent Coupon Payment on a quarterly basis until the earlier of the Stated Maturity Date orautomatic call if, and only if, the Stock Closing Price of the Lowest Performing Stock on the related Coupon Determination Date is greater than or equal to itsCoupon Threshold Price. In addition, if the Stock Closing Price of the Lowest Performing Stock on one or more Coupon Determination Dates is less than itsCoupon Threshold Price and, on a subsequent Coupon Determination Date, the Stock Closing Price of the Lowest Performing Stock on that subsequent CouponDetermination Date is greater than or equal to its Coupon Threshold Price, on the Coupon Payment Date related to that subsequent Coupon Determination Date,you will receive the Contingent Coupon Payment due for that subsequent Coupon Determination Date plus all previously unpaid Contingent Coupon Payments(without interest on amounts previously unpaid). If the Stock Closing Price of the Lowest Performing Stock is less than its Coupon Threshold Price on everyCoupon Determination Date, you will not receive any Contingent Coupon Payments throughout the entire term of the securities. The Coupon Threshold Price ofeach Underlying Stock is equal to 70% of its Starting Price. The Contingent Coupon Rate will be determined on the Pricing Date and will be at least 19.40% perannum Automatic Call.If the Stock Closing Price of the Lowest Performing Stock on any of the quarterly Call Observation Dates from February 2027 to May 2029,inclusive, is greater than or equal to its Starting Price, the securities will be automatically called for the face amount plus the final Contingent Coupon Payment andany previously unpaid Contingent Coupon Payments otherwise due Potential Loss of Principal.If the securities are not automatically called prior to maturity, you will receive the face amount at maturity if,and only if, the EndingPrice of the Lowest Performing Stock on the Final Calculation Day is greater than or equal to its Downside Threshold Price. If the Ending Price of the LowestPerforming Stock on the Final Calculation Day is less than its Downside Threshold Price, you will lose more than 30%, and possibly all, of the face amount of yoursecurities. The Downside Threshold Price of eachUnderlying Stock is equal to 70% of its Starting Price If the securities are not automatically called prior to maturity, you will have full downside exposure to the Lowest Performing Stockon the Final Calculation Dayfrom its Starting Price if its Ending Price is less than its Downside Threshold Price, but you will not participate in any appreciation of any Underlying Stock andwill not receive any dividends on any Underlying Stock Your return on the securities will depend solely on the performance of the Underlying Stock that is the Lowest Performing Stock on each Calculation Day. You willnot benefit in any way from the performance of the better performing Underlying Stocks. The