In connection with amendment No. 1 dated June 19, 2025, to Canadian Imperial Bank of Commerce's short form base shelf prospectus dated Aug. 15, 2023, effective at the start of trading on Friday, June 27, 2025, and going forward, all trades on series of CDRs (Canadian depositary receipts) designated as members of the classes of German CDRs, Swiss CDRs and Dutch CDRs, respectively, will be for settlement on a standard T-plus-one basis.

Please see the attached table of specified CDRs impacted by this change.

In support of the change of settlement cycle, all long orders will be cancelled at 5 p.m. EST on Thursday, June 26, 2025. Dealers are reminded to resubmit their long orders.

Additional information about the change of settlement cycle and the specified CDRs may be found in the amendment to the base prospectus, each of which is available on SEDAR+.

Updated security and trading information

Security name:  Roche CDR (CAD Hedged)

Symbol:  ROG

Security type:  depositary receipt

Cusip No.:  77119A 10 3

ISIN:  CA 77119A 10 3 0

Updated settlement cycle:  T plus one

Effective date:  June 27, 2025 (start of trading)

Designated market-maker:  CIBC World Markets

Transfer agent and registrar:  TSX Trust Company