CM Canadian Imperial Bank of Commerce

An investment in the Notes involves significant risks. In addition to the following risks included in this pricing supplement, we urge you to read “Risk Factors” beginning on page S-1 of the accompanying Prospectus Supplement and “Risk Factors” beginning on page 1 of the accompanying Prospectus.

You should understand the risks of investing in the Notes and should reach an investment decision only after careful consideration, with your advisers, of the suitability of the Notes in light of your particular financial circumstances and the information set forth in this pricing supplement and the accompanying Prospectus and Prospectus Supplement.

The Notes Do Not Guarantee Any Return Of Principal; You May Lose All Or A Substantial Portion Of The Principal Amount Of Your Notes.

The Notes do not guarantee any return of principal. The repayment of any principal on the Notes at maturity depends on the Final Level of the Reference Assets. Subject to the automatic call and the credit risk of the Bank, the Bank will only repay you the full Principal Amount of your Notes if the Final Level of the Lowest Performing Reference Asset is equal to or greater than its Downside Trigger Level. If the Final Level of the Lowest Performing Reference Asset is less than its Downside Trigger Level, you will lose a portion of the Principal Amount in an amount equal to the Percentage Change of the Lowest Performing Reference Asset from its Initial Level. Accordingly, you could lose up to 100% of the Principal Amount. Even with any Coupon Payments, the return on the Notes could be negative .

The Automatic Call Feature Limits Your Potential Return.

If the Notes are called, which may occur as early as June 4, 2021, you will receive the Principal Amount of your Notes plus any final accrued and unpaid Coupon Payments. If the Notes are automatically called, you will lose the opportunity to continue to potentially accrue and be paid Coupon Payments from the relevant Call Payment Date to the scheduled Maturity Date, and the total return on the Notes could be minimal. Because of the automatic call feature, the term of your investment in the Notes may be limited to a period that is shorter than the original term of the Notes. There is no guarantee that you would be able to reinvest the proceeds from an investment in the Notes at a comparable return for a similar level of risk in the event the Notes are automatically called prior to the Maturity Date.

The Notes Do Not Provide For Fixed Payments Of Interest And You May Receive No Coupon Payments On One Or More Coupon Payment Dates, Or Even Throughout The Entire Term Of The Notes.

It is possible that the Closing Level of at least one Reference Asset will be less than its Coupon Barrier Level for so many Trading Days during any Coupon Period that the Coupon Payment for the relevant Coupon Period will be less than the amount that would be paid on an ordinary debt security. The Coupon Payment for one or more Coupon Periods may be zero. If the Closing Level of at least one Reference Asset is less than its Coupon Barrier Level on each Trading Day from the Trade Date to the Final Valuation Date, you will not receive any Coupon Payment on the Notes. In addition, if the Closing Level of a Reference Asset is less than its Coupon Barrier Level on any Trading Day during a Coupon Period, the market value of the Notes may decrease and you may receive substantially less than the Principal Amount if you wish to sell your Notes at that time.

Your Return On The Notes Will Be Limited To The Coupon Payments Paid On The Notes, If Any, And The Investors Will Not Participate In Any Appreciation In The Level Of Either Reference Asset .

The return on the Notes will be limited to the monthly Coupon Payments that are payable with respect to each Coupon Period during the term of the Notes, if any, regardless of any increase in the level of either Reference Asset. Therefore, if the appreciation of the Reference Assets exceeds the sum of the Coupon Payments made to you, if any, the Notes will underperform an investment in securities linked to each of the Reference Assets providing full participation in the appreciation. Accordingly, the return on the Notes may be less than the return would be if you made an investment in securities directly linked to the positive performance of the Reference Assets.

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Your Return On The Notes Will Depend Solely On The Performance Of The Reference Asset That Is The Lowest Performing Reference Asset On Each Trading Day, And You Will Not Benefit In Any Way From The Performance Of The Better Performing Reference Asset.

Your return on the Notes will depend solely on the performance of the Reference Asset that is the Lowest Performing Reference Asset on each Trading Day. Although it is necessary for each Reference Asset to close at or above its respective Coupon Barrier Level on a Trading Day in order for the relevant monthly Coupon Payment to accrue on that day and to close above its respective Downside Trigger Level on the Final Valuation Date for you to be repaid the Principal Amount of your Notes at maturity, you will not benefit in any way from the performance of the better performing Reference Asset. The Notes may underperform an alternative investment linked to a basket composed of the Reference Assets, since in such case the performance of the better performing Reference Asset would be blended with the performance of the Lowest Performing Reference Asset, resulting in a better return than the return of the Lowest Performing Reference Asset alone. You should not invest in the Notes unless you understand and are willing to accept the full downside risks of the Least Performing Reference Asset.

Your Return May Be Lower Than The Return On A Conventional Debt Security Of Comparable Maturity.

The return that you will receive on your Notes, which could be negative, may be less than the return you could earn on other investments. Even if your return is positive, your return may be less than the return you would earn if you bought a conventional senior interest bearing debt security of the Bank with the same maturity date or if you invested directly in the securities included in one or more of the Reference Assets. Your investment may not reflect the full opportunity cost to you when you take into account factors that affect the time value of money.

If The Levels Of The Reference Assets Change, The Market Value Of Your Notes May Not Change In The Same Manner.

Your Notes may trade quite differently from the performance of the Reference Assets. Changes in the level of the Reference Assets may not result in a comparable change in the market value of your Notes. We discuss some of the reasons for this disparity under “—The Price At Which The Notes May Be Sold Prior To Maturity Will Depend On A Number Of Factors And May Be Substantially Less Than The Amount For Which They Were Originally Purchased” below.

We Have No Affiliation With The Sponsor Of Any Of The Reference Assets And Have Not Independently Verified Their Public Disclosure Of Information.

The Sponsor of each Reference Asset is not an affiliate of the Bank and is not involved in any of the Bank’s offerings of Notes pursuant to this pricing supplement in any way. Consequently, we have no control of the actions of the Sponsors of the Reference Assets, including any errors in or discontinuation of disclosure regarding the methods or policies relating to the calculation of the applicable Reference Asset. The Sponsors of the Reference Assets have no obligation to consider your interest as an investor in the Notes in taking any actions that might affect the value of the Notes. None of the money you pay for the Notes will go to the Sponsors of the Reference Assets.

In addition, as we are not affiliated with the Sponsors of the Reference Assets, we do not assume any responsibility for the adequacy of the information about the Reference Assets or their Sponsors contained in this pricing supplement. We are not responsible for any Sponsor’s public disclosure of information on itself or the applicable Reference Asset. As an investor in the Notes, you should make your own investigation into the Reference Assets.

An Investment In The Notes Is Subject To Risks Associated With Investing In Stocks With A Small Market Capitalization.

The stocks that constitute the Russell 2000 ®  Index are issued by companies with relatively small market capitalization. These companies often have greater stock price volatility, lower trading volume and less liquidity than large capitalization companies. As a result, the Russell 2000 ®  Index may be more volatile than an equity index that does not track solely small capitalization stocks. Stock prices of small capitalization companies are also generally more vulnerable than those of large capitalization companies to adverse business and economic developments, and the stocks of small capitalization companies may be thinly traded, and be less attractive to many investors if they do not pay dividends. In addition, small capitalization companies are typically less well-established

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and less stable financially than large capitalization companies and may depend on a small number of key personnel, making them more vulnerable to loss of those individuals. Small capitalization companies tend to have lower revenues, less diverse product lines, smaller shares of their target markets, fewer financial resources and fewer competitive strengths than large capitalization companies. These companies may also be more susceptible to adverse developments related to their products or services.

You Must Rely On Your Own Evaluation Of The Merits Of An Investment Linked To The Reference Assets.

In the ordinary course of business, we, the Agent or our respective affiliates may have expressed views on expected movements in the Reference Assets, and may do so in the future. These views or reports may be communicated to our clients and clients of our affiliates. However, these views are subject to change from time to time. Moreover, other professionals who deal in markets relating to the Reference Assets may at any time have significantly different views from those of us or our affiliates. For these reasons, you are encouraged to derive information concerning the Reference Assets from multiple sources, and you should not rely solely on views expressed by us, the Agent or our respective affiliates. For additional information, see “Information Regarding the Reference Assets” in this pricing supplement and the public disclosures made by the Sponsors.

The Historical Performance Of The Reference Assets Should Not Be Taken As An Indication Of Their Future Performance.

The levels of the Reference Assets will determine the amount to be paid on the Notes at maturity and whether the Notes will be called prior to maturity. The historical performance of the Reference Assets does not necessarily give an indication of their future performance. As a result, it is impossible to predict whether the levels of the Reference Assets will rise or fall during the term of the Notes. The levels of the Reference Assets will be influenced by complex and interrelated political, economic, financial and other factors.

Certain Business And Trading Activities May Create Conflicts With Your Interests And Could Potentially Adversely Affect The Value Of The Notes.

We, the Agent or one or more of our respective affiliates, may engage in trading and other business activities that are not for your account or on your behalf (such as holding or selling of the Notes for our proprietary account or effecting secondary market transactions in the Notes for other customers). These activities may present a conflict between your interest in the Notes and the interests we, the Agent or one or more of our respective affiliates, may have in our or their proprietary account. We, the Agent and our respective affiliates may engage in any such activities without regard to the Notes or the effect that such activities may directly or indirectly have on the value of the Notes.

Moreover, we, the Agent and our respective affiliates play a variety of roles in connection with the issuance of the Notes, including hedging our obligations under the Notes and making the assumptions and inputs used to determine the pricing of the Notes and the estimated value of the Notes when the terms of the Notes are set. We expect to hedge our obligations under the Notes through one of our affiliates and/or another unaffiliated counterparty. In connection with such activities, our economic interests and the economic interests of affiliates of ours may be adverse to your interests as an investor in the Notes. Any of these activities may affect the value of the Notes. In addition, because hedging our obligations entails risk and may be influenced by market forces beyond our control, this hedging activity may result in a profit that is more or less than expected, or it may result in a loss. We or one or more of our affiliates will retain any profits realized in hedging our obligations under the Notes even if investors do not receive a favorable investment return under the terms of the Notes or in any secondary market transaction. For additional information regarding our hedging activities, please see “Use of Proceeds and Hedging” in this pricing supplement.

In addition, the Bank will serve as Calculation Agent for the Notes and will have sole discretion in calculating the amounts payable in respect of the Notes. Exercising discretion in this manner could adversely affect the value of the Notes.

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The Calculation Agent Can Postpone The Determination Of A Closing Level On A Call Observation Date Or The Final Level If A Market Disruption Event Occurs.

The determination of a Closing Level on a Call Observation Date or the Final Level may be postponed if the Calculation Agent determines that a Market Disruption Event has occurred or is continuing on any scheduled Call Observation Date or the scheduled Final Valuation Date, as applicable, with respect to one or more Reference Assets. If a Market Disruption Event occurs or is continuing with respect to a Reference Asset on a scheduled Call Observation Date or the scheduled Final Valuation Date, as applicable, the Closing Level of that Reference Asset for that day will be its Closing Level on the following Trading Day on which no Market Disruption Event occurs with respect to that Reference Asset, unless a Market Disruption Event occurs on each of the eight following scheduled Trading Days. In that case, the Calculation Agent will make a good faith estimate in its sole discretion of the Closing Level for each affected Reference Asset that would have prevailed in the absence of the Market Disruption Event in respect of such Reference Asset on that eighth scheduled Trading Day. See “Certain Terms of the Notes—Market Disruption Events” in this pricing supplement. Under certain circumstances, the determinations of the Calculation Agent will be confirmed by one or more independent calculation experts. See “Certain Terms of the Notes—Appointment of Independent Calculation Experts” in this pricing supplement.

There Are Potential Conflicts Of Interest Between You And The Calculation Agent.

The Calculation Agent will, among other things, determine each Coupon Payment, whether the Notes are automatically called and the Payment at Maturity if the Notes are not called. We will serve as the Calculation Agent. We may change the Calculation Agent after the original issue date without notice to you. The Calculation Agent will exercise its judgment when performing its functions. For example, the Calculation Agent may have to determine whether a Market Disruption Event affecting one or more Reference Assets has occurred, and make certain adjustments with respect to the Reference Assets if certain events occur. This determination may, in turn, depend on the Calculation Agent’s judgment whether the event has materially interfered with our ability or the ability of one of our affiliates to unwind our hedge positions.

Since this determination by the Calculation Agent will affect the payments on the Notes, the Calculation Agent may have a conflict of interest if it needs to make a determination of this kind. Under certain circumstances, the determinations of the Calculation Agent will be confirmed by one or more independent calculation experts. See “Certain Terms of the Notes—Appointment of Independent Calculation Experts” in this pricing supplement.

No Assurance That The Investment View Implicit In The Notes Will Be Successful.

It is impossible to predict with certainty whether and the extent to which the levels of the Reference Assets will rise or fall. There can be no assurance that the Closing Level of either Reference Asset on a Trading Day will be greater than or equal to its Coupon Barrier Level or the Final Level of the Lowest Performing Reference Asset will be greater than its Downside Trigger Level. The level of a Reference Asset may be influenced by complex and interrelated political, economic, financial and other factors that affect the securities included in that Reference Asset. You should be willing to accept the risks of the price performance of equity securities in general and the Reference Assets in particular, and the risk of losing some or all of the Principal Amount.

Furthermore, we cannot give you any assurance that the future performance of the Reference Assets will result in your receiving an amount greater than or equal to the Principal Amount of your Notes. Certain periods of historical performance of the Reference Assets would have resulted in you receiving less than the Principal Amount of your Notes if you had owned notes with terms similar to these Notes in the past. See “Information Regarding The Reference Assets” in this pricing supplement for further information regarding the historical performance of the Reference Assets.

The Notes Are Not Ordinary Debt Securities.

The Notes have certain investment characteristics that differ from traditional fixed income securities. Specifically, the performance of the Notes will not track the same price movements as traditional interest rate products. The return that you will receive on the Notes, which could be negative, may be less than the return you could earn on other investments. Even if your return is positive, your return may be less than the return you would earn if you bought a conventional senior interest bearing debt security of the Bank. A person should reach a decision to invest in

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the Notes after carefully considering, with his or her advisors, the suitability of the Notes in light of his or her investment objectives and the information set out in the above terms of the offering. The Issuer does not make any recommendation as to whether the Notes are a suitable investment for any person.

Your Investment Is Subject To The Credit Risk Of The Bank.

The Notes are senior unsecured debt obligations of the Bank and are not, either directly or indirectly, an obligation of any third party. As further described in the accompanying Prospectus and Prospectus Supplement, the Notes will rank on par with all of the other unsecured and unsubordinated debt obligations of the Bank, except such obligations as may be preferred by operation of law. Any payment to be made on the Notes, including the return of any Principal Amount at maturity or on a Call Payment Date, as applicable, depends on the ability of the Bank to satisfy its obligations as they come due. As a result, the actual and perceived creditworthiness of the Bank may affect the market value of the Notes and, in the event the Bank were to default on its obligations, you may not receive the amounts owed to you under the terms of the Notes.

If we default on our obligations under the Notes, your investment would be at risk and you could lose some or all of your investment. See “Description of Senior Debt Securities —Events of Default” in the Prospectus.

The indenture does not contain any restrictions on our ability or the ability of any of our affiliates to sell, pledge or otherwise convey all or any securities. We and our affiliates will not pledge or otherwise hold any security for the benefit of holders of the Notes. Consequently, in the event of a bankruptcy, insolvency or liquidation involving us, any securities we hold as a hedge to the Notes will be subject to the claims of our creditors generally and will not be available specifically for the benefit of the holders of the Notes.

The Price At Which The Notes May Be Sold Prior To Maturity Will Depend On A Number Of Factors And May Be Substantially Less Than The Amount For Which They Were Originally Purchased.

The price at which the Notes may be sold prior to maturity will depend on a number of factors. Some of these factors include, but are not limited to: (i) actual or anticipated changes in the levels of the Reference Assets over the full term of the Note, (ii) volatility of the levels of the Reference Assets and the market’s perception of future volatility of the levels of the Reference Assets, (iii) changes in interest rates generally, (iv) any actual or anticipated changes in our credit ratings or credit spreads, and (v) time remaining to maturity. In particular, the price of the Notes may be impacted by the fact that the Notes may be automatically called prior to maturity. Additionally, the interest rates of the Notes reflect not only our credit spread generally but also the automatic call feature of the Notes and thus may not reflect the rate at which a note without an automatic call feature might be issued and sold.

Depending on the actual or anticipated level of interest rates, the market value of the Notes may decrease and you may receive up to 100% less than the original issue price if you sell your Notes prior to maturity.

The Inclusion Of Dealer Spread And Projected Profit From Hedging In The Original Issue Price Is Likely To Adversely Affect Secondary Market Prices.

Assuming no change in market conditions or any other relevant factors, the price, if any, at which the Agent or any other party is willing to purchase the Notes at any time in secondary market transactions will likely be significantly lower than the original issue price, since secondary market prices are likely to exclude underwriting commissions paid with respect to the Notes and the cost of hedging our obligations under the Notes that are included in the original issue price. The cost of hedging includes the projected profit that we and/or our affiliates may realize in consideration for assuming the risks inherent in managing the hedging transactions. These secondary market prices are also likely to be reduced by the costs of unwinding the related hedging transactions. In addition, any secondary market prices may differ from values determined by pricing models used by the Agent as a result of dealer discounts, mark-ups or other transaction costs.

The Bank’s Estimated Value Of The Notes Will Be Lower Than The Original Issue Price (Price To Public) Of The Notes.

The Bank’s initial estimated value is only an estimate using several factors. The original issue price of the Notes will exceed the Bank’s initial estimated value because costs associated with selling and structuring the Notes, as well as

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hedging the Notes, are included in the original issue price of the Notes. See “The Bank’s Estimated Value of the Notes” in this pricing supplement.

The Bank’s Estimated Value Does Not Represent Future Values Of The Notes And May Differ From Others’ Estimates.

The Bank’s initial estimated value of the Notes is only an estimate, which is determined by reference to the Bank’s internal pricing models when the terms of the Notes are set. This estimated value is based on market conditions and other relevant factors existing at that time, the Bank’s internal funding rate on the Trade Date and the Bank’s assumptions about market parameters, which can include volatility, dividend rates, interest rates and other factors. Different pricing models and assumptions could provide valuations for the Notes that are greater or less than the Bank’s initial estimated value. In addition, market conditions and other relevant factors in the future may change, and any assumptions may prove to be incorrect. On future dates, the value of the Notes could change significantly based on, among other things, changes in market conditions, including the levels of the Reference Assets, the Bank’s creditworthiness, interest rate movements and other relevant factors, which may impact the price at which the Agent or any other party would be willing to buy the Notes from you in any secondary market transactions. The Bank’s initial estimated value does not represent a minimum price at which the Agent or any other party would be willing to buy the Notes in any secondary market (if any exists) at any time. See “The Bank’s Estimated Value of the Notes” in this pricing supplement.

The Bank’s Estimated Value Is Not Determined By Reference To Credit Spreads For Our Conventional Fixed-Rate Debt.

The internal funding rate used in the determination of the Bank’s initial estimated value of the Notes generally represents a discount from the credit spreads for our conventional fixed-rate debt. The discount is based on, among other things, our view of the funding value of the Notes as well as the higher issuance, operational and ongoing liability management costs of the Notes in comparison to those costs for our conventional fixed-rate debt. If the Bank were to use the interest rate implied by our conventional fixed-rate debt, we would expect the economic terms of the Notes to be more favorable to you. Consequently, our use of an internal funding rate for market-linked notes would have an adverse effect on the economic terms of the Notes and the initial estimated value of the Notes on the Trade Date and could have an adverse effect on any secondary market prices of the Notes. See “The Bank’s Estimated Value of the Notes” in this pricing supplement.

Hedging Activities By The Bank May Negatively Impact Investors In The Notes And Cause Our Respective Interests And Those Of Our Clients And Counterparties To Be Contrary To Those Of Investors In The Notes.

The Bank or one or more of our affiliates has hedged or expects to hedge the obligations under the Notes by purchasing futures and/or other instruments linked to the Reference Assets. The Bank or one or more of our affiliates also expects to adjust the hedge by, among other things, purchasing or selling any of the foregoing, and perhaps other instruments linked to the Reference Assets, at any time and from time to time, and to unwind the hedge by selling any of the foregoing on or before the Final Valuation Date.

Any of these hedging activities may adversely affect the price of the Reference Assets and therefore the market value of the Notes and the amount you will receive, if any, on the Notes. In addition, you should expect that these transactions will cause the Bank or our affiliates or our respective clients or counterparties, to have economic interests and incentives that do not align with, and that may be directly contrary to, those of an investor in the Notes. The Bank or our affiliates will have no obligation to take, refrain from taking or cease taking any action with respect to these transactions based on the potential effect on an investor in the Notes, and may receive substantial returns with respect to these hedging activities while the value of the Notes may decline.

The Notes Will Not Be Listed On Any Securities Exchange Or Any Inter-Dealer Quotation System; There May Be No Secondary Market For The Notes; Potential Illiquidity Of The Secondary Market; Holding Of The Notes By The Agent Or Its Or Our Affiliates And Future Sales.

The Notes are most suitable for purchasing and holding to maturity. The Notes will be new securities for which there is no trading market. The Notes will not be listed on any organized securities exchange or any inter-dealer

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quotation system. We cannot assure you as to whether there will be a trading or secondary market for the Notes or, if there were to be such a trading or secondary market, that it would be liquid.

Under ordinary market conditions, the Agent or any of its affiliates may (but are not obligated to) make a secondary market for the Notes and may cease doing so at any time. Because we do not expect other broker-dealers to participate in the secondary market for the Notes, the price at which you may be able to trade your Notes is likely to depend on the price, if any, at which the Agent or any of its affiliates are willing to transact. If none of the Agent or any of its affiliates makes a market for the Notes, there will not be a secondary market for the Notes. Accordingly, we cannot assure you as to the development or liquidity of any secondary market for the Notes. If a secondary market in the Notes is not developed or maintained, you may not be able to sell your Notes easily or at prices that will provide you with a yield comparable to that of similar securities that have a liquid secondary market.

In addition, the Principal Amount of the Notes being offered may not be purchased by investors in the initial offering, and the Agent or one or more of its or our affiliates may agree to purchase any unsold portion. The Agent or such affiliate or affiliates intend to hold the Notes, which may affect the supply of the Notes available in any secondary market trading and therefore may adversely affect the price of the Notes in any secondary market trading. If a substantial portion of any Notes held by the Agent or its or our affiliates were to be offered for sale following this offering, the market price of such Notes could fall, especially if secondary market trading in such Notes is limited or illiquid.

The Notes Are Not Insured By Any Third Parties.

The Notes will be solely our obligations. Neither the Notes nor your investment in the Notes are insured by the United States Federal Deposit Insurance Corporation, the Canada Deposit Insurance Corporation, the Bank Insurance Fund or any other government agency or instrumentality of the United States, Canada or any other jurisdiction.

The Tax Treatment Of The Notes Is Uncertain.

Significant aspects of the tax treatment of the Notes are uncertain. You should consult your tax advisor about your own tax situation. See “Certain Canadian Income Tax Consequences” and “Certain U.S. Federal Income Tax Considerations” in this pricing supplement.

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Included in the following pages is a brief description of each of the Reference Assets. This information has been obtained from publicly available sources.

We have not undertaken an independent review or due diligence of the information obtained from Bloomberg. The historical performance of each of the Reference Assets should not be taken as an indication of its future performance, and no assurance can be given as to the Closing Levels of the Reference Assets at any time. We cannot give you assurance that the performance of the Reference Assets will result in any positive return on your initial investment.

Information from outside sources is not incorporated by reference in, and should not be considered part of, this pricing supplement or any accompanying Prospectus or Prospectus Supplement. We have not independently verified any of the information herein obtained from outside sources.

This pricing supplement relates only to the Notes offered hereby and does not relate to the Reference Assets or the securities included in any of the Reference Assets. We have derived any and all disclosure contained in this pricing supplement regarding each of the Reference Assets from publicly available information. We do not make any representation that such publicly available information is accurate or complete.

The S&P 500 ®  Index

The S&P 500 ®  Index (the “SPX”) is published by S&P Dow Jones Indices LLC (“S&P Dow Jones Indices” or “S&P”), and is intended to provide an indication of the pattern of common stock price movement in the large capitalization segment of the United States equity market. The SPX covers approximately 75% of the United States equity market by market capitalization.

The calculation of the value of the SPX (discussed below in further detail) is based on the relative value of the aggregate Market Value (as defined below) of the common stocks of 500 companies as of a particular time compared to the aggregate average Market Value of the common stocks of 500 similar companies during the base period of the years 1941 through 1943. Historically, the “Market Value” of any S&P component stock was calculated as the product of the market price per share and the number of the then-outstanding shares of such S&P component stock. As discussed below, during March 2005, S&P began to use a new methodology to calculate the Market Value of the S&P component stocks and S&P completed its transition to the new calculation methodology during September 2005.

Relevant criteria employed by S&P include the viability of the particular company, the extent to which that company represents the industry group to which it is assigned, the extent to which the market price of that company’s common stock generally is responsive to changes in the affairs of the respective industry and the market value and trading activity of the common stock of that company. Eleven main groups of companies constitute the SPX, with the approximate percentage of the market capitalization of the SPX included in each group as of May 31, 2018 indicated in parentheses : Information Technology (26.0%), Financials (14.2%), Health Care (13.9%), Consumer Discretionary (12.9%), Industrials (9.9%), Consumer Staples (6.7%), Energy (6.3%), Materials (2.8%), Utilities (2.8%), Real Estate (2.7%) and Telecommunication Services (1.8%). S&P may from time to time, in its sole discretion, add companies to, or delete companies from, the SPX to achieve the objectives stated above.

S&P calculates the SPX by reference to the prices of the constituent stocks of the SPX without taking account of the value of dividends paid on those stocks. As a result, the return on the Notes will not reflect the return you would realize if you actually owned the SPX constituent stocks and received the dividends paid on those stocks.

Index Computation

Historically, the market value of any component stock of the SPX was calculated as the product of the market price per share and the number of then outstanding shares of such component stock. In March 2005, S&P began shifting the SPX halfway from a market capitalization weighted formula to a float-adjusted formula, before moving the SPX to full float adjustment on September 16, 2005. S&P’s criteria for selecting stocks for the SPX did not change with the shift to float adjustment. However, the adjustment affects each company’s weight in the SPX.

Under float adjustment, the share counts used in calculating the SPX reflect only those shares that are available to investors, not all of a company’s outstanding shares. Float adjustment excludes shares that are closely held by control groups, other publicly traded companies or government agencies.

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In September 2012, all shareholdings representing more than 5% of a stock’s outstanding shares, other than holdings by “block owners,” were removed from the float for purposes of calculating the SPX. Generally, these “control holders” will include officers and directors, private equity, venture capital and special equity firms, other publicly traded companies that hold shares for control, strategic partners, holders of restricted shares, employee stock ownership plans, employee and family trusts, foundations associated with the company, holders of unlisted share classes of stock, government entities at all levels (other than government retirement/pension funds) and any individual person who controls a 5% or greater stake in a company as reported in regulatory filings. However, holdings by block owners, such as depositary banks, pension funds, mutual funds and ETF providers, 401(k) plans of the company, government retirement/pension funds, investment funds of insurance companies, asset managers and investment funds, independent foundations and savings and investment plans, will ordinarily be considered part of the float.

Treasury stock, stock options, restricted shares, equity participation units, warrants, preferred stock, convertible stock, and rights are not part of the float. Shares held in a trust to allow investors in countries outside the country of domicile, such as depositary shares and Canadian exchangeable shares are normally part of the float unless those shares form a control block.

For each stock, an investable weight factor (“IWF”) is calculated by dividing the available float shares, by the total shares outstanding. As of September 21, 2012, available float shares are defined as the total shares outstanding less shares held by control holders. This calculation is subject to a 5% minimum threshold for control blocks. For example, if a company’s officers and directors hold 3% of the company’s shares, and no other control group holds 5% of the company’s shares, S&P would assign that company an IWF of 1.00, as no control group meets the 5% threshold. However, if a company’s officers and directors hold 3% of the company’s shares and another control group holds 20% of the company’s shares, S&P would assign an IWF of 0.77, reflecting the fact that 23% of the company’s outstanding shares are considered to be held for control.  As of July 31, 2017, companies with multiple share class lines are no longer eligible for inclusion in the SPX.  Constituents of the SPX prior to July 31, 2017 with multiple share class lines will be grandfathered in and continue to be included in the SPX.  If a constituent company of the SPX reorganizes into a multiple share class line structure, that company will remain in the SPX at the discretion of the S&P Index Committee in order to minimize turnover.

The SPX is calculated using a base-weighted aggregate methodology. The level of the SPX reflects the total market value of all 500 component stocks relative to the base period of the years 1941 through 1943. An indexed number is used to represent the results of this calculation in order to make the level easier to work with and track over time. The actual total market value of the component stocks during the base period of the years 1941 through 1943 has been set to an indexed level of 10. This is often indicated by the notation 1941- 43 = 10. In practice, the daily calculation of the SPX is computed by dividing the total market value of the component stocks by the “index divisor.” By itself, the index divisor is an arbitrary number. However, in the context of the calculation of the SPX, it serves as a link to the original base period level of the SPX. The index divisor keeps the SPX comparable over time and is the manipulation point for all adjustments to the SPX, which is index maintenance.

Index Maintenance

Index maintenance includes monitoring and completing the adjustments for company additions and deletions, share changes, stock splits, stock dividends and stock price adjustments due to company restructuring or spinoffs.  Some corporate actions, such as stock splits and stock dividends require changes in the common shares outstanding and the stock prices of the companies in the SPX, and do not require index divisor adjustments.

To prevent the level of the SPX from changing due to corporate actions, corporate actions which affect the total market value of the SPX require an index divisor adjustment. By adjusting the index divisor for the change in market value, the level of the SPX remains constant and does not reflect the corporate actions of individual companies in the SPX. Index divisor adjustments are made after the close of trading and after the calculation of the index closing level.

Changes in a company’s shares outstanding and IWF due to its acquisition of another public company are made as soon as reasonably possible. At S&P’s discretion, de minimis merger and acquisition share changes are accumulated and implemented with the quarterly share rebalancing.

All other changes of less than 5% are accumulated and made quarterly on the third Friday of March, June, September, and December.

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Changes in a company’s total shares outstanding of 5% or more due to public offerings are made as soon as reasonably possible. Other changes of 5% or more (for example, due to tender offers, Dutch auctions, voluntary exchange offers, company stock repurchases, private placements, acquisitions of private companies or non-index companies that do not trade on a major exchange, redemptions, exercise of options, warrants, conversion of preferred stock, notes, debt, equity participations, at-the-market stock offerings or other recapitalizations) are made weekly, and are generally announced on Fridays for implementation after the close of trading the following Friday (one week later). If a 5% or more share change causes a company’s IWF to change by five percentage points or more, the IWF is updated at the same time as the share change.  IWF changes resulting from partial tender offers are considered on a case-by-case basis.

Historical Data

The following graph sets forth daily Closing Levels of the SPX for the period from January 1, 2008 to June 1, 2018. The Closing Level of the SPX on June 1, 2018 was 2,734.62.

License Agreement

We and S&P Dow Jones Indices LLC have entered into a non-transferable, non-exclusive license agreement providing for the sublicense to us, in exchange for a fee, of the right to use the SPX in connection with the issuance of the Notes.

The license agreement between us and S&P Dow Jones Indices LLC provides that the following language must be stated in this pricing supplement:

“The S&P 500 ®  Index is a product of S&P Dow Jones Indices LLC (“SPDJI”) ,  and has been licensed for use by Canadian Imperial Bank of Commerce. Standard & Poor’s ® , S&P ®  and S&P 500 ®  are registered trademarks of Standard & Poor’s Financial Services LLC (“S&P”); Dow Jones ®  is a registered trademark of Dow Jones Trademark Holdings LLC (“Dow Jones”); and these trademarks have been licensed for use by SPDJI and sublicensed for certain purposes by Canadian Imperial Bank of Commerce. The Notes are not sponsored, endorsed, sold or promoted by SPDJI, Dow Jones, S&P, any of their respective affiliates (collectively, “S&P Dow Jones Indices”). S&P Dow Jones Indices makes no representation or warranty, express or implied, to the owners of the Notes or any member of the public regarding the advisability of investing in securities generally or in securities particularly or the ability of the S&P 500 ®  Index to track general market performance. S&P Dow Jones Indices’ only relationship to Canadian Imperial Bank of Commerce with respect to the S&P 500 ®  Index is the licensing of the Index and certain trademarks, service marks and/or trade names of S&P Dow Jones Indices or its licensors. The S&P 500 ®  Index is determined, composed and calculated by S&P Dow Jones Indices without regard to Canadian Imperial Bank of Commerce or the Notes. S&P Dow Jones Indices have no obligation to take the needs of Canadian Imperial Bank of Commerce or the owners of the Notes into consideration in determining, composing or calculating the S&P 500 ®  Index. S&P Dow Jones Indices is not responsible for and has not participated in the determination of the prices, and amount of the Notes or the timing of the issuance or sale of the Notes or in the determination or calculation of the equation by which the Notes are to be converted into cash, surrendered or redeemed, as the case may be. S&P Dow Jones Indices has no obligation or liability in connection with the administration, marketing or trading of the Notes. There is no assurance that investment products based on the S&P 500 ®  Index will accurately

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track index performance or provide positive investment returns. S&P Dow Jones Indices LLC is not an investment advisor. Inclusion of a security within an index is not a recommendation by S&P Dow Jones Indices to buy, sell, or hold such security, nor is it considered to be investment advice. Notwithstanding the foregoing, CME Group Inc. and its affiliates may independently issue and/or sponsor financial products unrelated to the Notes currently being issued by Canadian Imperial Bank of Commerce, but which may be similar to and competitive with the Notes .  In addition, CME Group Inc. and its affiliates may trade financial products which are linked to the performance of the S&P 500 ®  Index.

S&P DOW JONES INDICES DOES NOT GUARANTEE THE ADEQUACY, ACCURACY, TIMELINESS AND/OR THE COMPLETENESS OF THE S&P 500 ®  INDEX OR ANY DATA RELATED THERETO OR ANY COMMUNICATION, INCLUDING BUT NOT LIMITED TO, ORAL OR WRITTEN COMMUNICATION (INCLUDING ELECTRONIC COMMUNICATIONS) WITH RESPECT THERETO. S&P DOW JONES INDICES SHALL NOT BE SUBJECT TO ANY DAMAGES OR LIABILITY FOR ANY ERRORS, OMISSIONS, OR DELAYS THEREIN. S&P DOW JONES INDICES MAKES NO EXPRESS OR IMPLIED WARRANTIES, AND EXPRESSLY DISCLAIMS ALL WARRANTIES, OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR USE OR AS TO RESULTS TO BE OBTAINED BY CANADIAN IMPERIAL BANK OF COMMERCE,   OWNERS OF THE NOTES ,  OR ANY OTHER PERSON OR ENTITY FROM THE USE OF THE S&P 500 ®  INDEX OR WITH RESPECT TO ANY DATA RELATED THERETO. WITHOUT LIMITING ANY OF THE FOREGOING, IN NO EVENT WHATSOEVER SHALL S&P DOW JONES INDICES BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES INCLUDING BUT NOT LIMITED TO, LOSS OF PROFITS, TRADING LOSSES, LOST TIME OR GOODWILL, EVEN IF THEY HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES, WHETHER IN CONTRACT, TORT, STRICT LIABILITY, OR OTHERWISE. THERE ARE NO THIRD PARTY BENEFICIARIES OF ANY AGREEMENTS OR ARRANGEMENTS BETWEEN S&P DOW JONES INDICES AND CANADIAN IMPERIAL BANK OF COMMERCE, OTHER THAN THE LICENSORS OF S&P DOW JONES INDICES.”

The Russell 2000 ®  Index

The Russell 2000 ®  Index (the “RTY”) was developed by Russell Investments (“Russell”) before FTSE International Limited and Russell combined in 2015 to create FTSE Russell, which is wholly owned by London Stock Exchange Group. Russell began dissemination of the RTY (Bloomberg L.P. index symbol “RTY”) on January 1, 1984. The RTY was set to 135 as of the close of business on December 31, 1986. FTSE Russell calculates and publishes the RTY. The RTY is designed to track the performance of the small capitalization segment of the U.S. equity market. As a subset of the Russell 3000 ®  Index (the ‘Russell 3000 Index’), the RTY consists of the smallest 2,000 companies included in the Russell 3000 Index. The Russell 3000 Index measures the performance of the largest 3,000 U.S. companies, representing approximately 98% of the investable U.S. equity market. The RTY is determined, comprised, and calculated by FTSE Russell without regard to the Notes.

Index Composition

All companies eligible for inclusion in the RTY must be classified as a U.S. company under FTSE Russell’s country-assignment methodology. If a company is incorporated, has a stated headquarters location, and trades in the same country (American Depositary Receipts and American Depositary Shares are not eligible), then the company is assigned to its country of incorporation. If any of the three factors are not the same, FTSE Russell defines three Home Country Indicators (“HCIs”): country of incorporation, country of headquarters, and country of the most liquid exchange (as defined by a two-year average daily dollar trading volume) (“ADDTV”) from all exchanges within a country. Using the HCIs, FTSE Russell cross-compares the primary location of the company’s assets with the three HCIs. If the primary location of its assets matches any of the HCIs, then the company is assigned to the primary location of its assets. If there is insufficient information to determine the country in which the company’s assets are primarily located, FTSE Russell will use the primary country from which the company’s revenues are primarily derived for the cross-comparison with the three HCIs in a similar manner. FTSE Russell uses the average of two years of assets or revenues data to reduce potential turnover. If conclusive country details cannot be derived from assets or revenues data, FTSE Russell will assign the company to the country of its headquarters, which is defined as the address of the company’s principal executive offices, unless that country is a Benefit Driven Incorporation (“BDI”) country, in which case the company will be assigned to the country of its most liquid stock exchange. BDI countries include: Anguilla, Antigua and Barbuda, Aruba, Bahamas, Barbados, Belize, Bermuda, Bonaire, British Virgin Islands, Cayman Islands, Channel Islands, Cook Islands, Curacao, Faroe Islands, Gibraltar,

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Guernsey, Isle of Man, Jersey, Liberia, Marshall Islands, Panama, Saba, Sint Eustatius, Sint Maarten, and Turks and Caicos Islands. For any companies incorporated or headquartered in a U.S. territory, including countries such as Puerto Rico, Guam, and U.S. Virgin Islands, a U.S. HCI is assigned.

All securities eligible for inclusion in the RTY must trade on a major U.S. exchange. Stocks must have a closing price at or above $1.00 on their primary exchange on the “rank day” (typically the last trading day in May but a confirmed timetable is announced each spring) in May to be eligible for inclusion during annual reconstitution. However, in order to reduce unnecessary turnover, if an existing member’s closing price is less than $1.00 on the rank day in May, it will be considered eligible if the average of the daily closing prices (from its primary exchange) during the month of May is equal to or greater than $1.00. Initial public offerings are added each quarter and must have a closing price at or above $1.00 on the last day of their eligibility period in order to qualify for index inclusion. If an existing stock does not trade on the rank day, but does have a closing price at or above $1.00 on another eligible U.S. exchange, that stock will be eligible for inclusion.

An important criterion used to determine the list of securities eligible for the RTY is total market capitalization, which is defined as the market price as of the rank day in May for those securities being considered at annual reconstitution times the total number of shares outstanding. Where applicable, common stock, non-restricted exchangeable shares and partnership units/membership interests are used to determine market capitalization. Any other form of shares such as preferred stock, convertible preferred stock, redeemable shares, participating preferred stock, warrants and rights, installment receipts or trust receipts, are excluded from the calculation. If multiple share classes of common stock exist, they are combined. In cases where the common stock share classes act independently of each other (e.g., tracking stocks), each class is considered for inclusion separately. If multiple share classes exist, the pricing vehicle will be designated as the share class with the highest two-year trading volume as of the rank day in May.

Companies with a total market capitalization of less than $30 million are not eligible for the RTY. Similarly, companies with only 5% or less of their shares available in the marketplace are not eligible for the RTY. Royalty trusts, limited liability companies, closed-end investment companies (companies that are required to report Acquired Fund Fees and Expenses, as defined by the SEC, including business development companies), blank check companies, special purpose acquisition companies, and limited partnerships are also ineligible for inclusion. Exchange traded funds and mutual funds are also excluded. Bulletin board, pink sheets, and over-the-counter (“OTC”) traded securities are not eligible for inclusion.

Annual reconstitution is a process by which the RTY is completely rebuilt. Based on closing levels of the company’s common stock on its primary exchange on the rank day of May of each year, FTSE Russell reconstitutes the composition of the RTY using the then existing market capitalizations of eligible companies. Reconstitution of the RTY occurs on the last Friday in June or, when the last Friday in June is the 29th or 30th, reconstitution occurs on the prior Friday. In addition, FTSE Russell adds initial public offerings to the RTY on a quarterly basis based on total market capitalization ranking within the market-adjusted capitalization breaks established during the most recent reconstitution. After membership is determined, a security’s shares are adjusted to include only those shares available to the public. This is often referred to as “free float.” The purpose of the adjustment is to exclude from market calculations the capitalization that is not available for purchase and is not part of the investable opportunity set.

Historical Data

The following graph sets forth daily Closing Levels of the RTY for the period from January 1, 2008 to June 1, 2018. The Closing Level of the RTY on June 1, 2018 was 1,647.983.

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License Agreement

We have entered into a non-exclusive license agreement with FTSE Russell whereby we, in exchange for a fee, are permitted to use the RTY and its related trademarks in connection with certain securities, including the Notes. We are not affiliated with FTSE Russell; the only relationship between FTSE Russell and us is any licensing of the use of FTSE Russell’s indices and trademarks relating to them.

The license agreement between FTSE Russell and us provides that the following language must be set forth when referring to any FTSE Russell Indexes or the FTSE Russell trademarks in this pricing supplement:

“‘Russell 2000 ®  Index’ and ‘Russell 3000 ®  Index’ are trademarks of FTSE Russell and have been licensed for use by Canadian Imperial Bank of Commerce. The notes are not sponsored, endorsed, sold, or promoted by FTSE Russell and FTSE Russell makes no representation regarding the advisability of investing in the Notes.

The Notes are not sponsored, endorsed, sold, or promoted by FTSE Russell. FTSE Russell makes no representation or warranty, express or implied, to the owners of the securities or any member of the public regarding the advisability of investing in securities generally or in these securities particularly or the ability of the RTY to track general stock market performance or a segment of the same. FTSE Russell’s publication of the RTY in no way suggests or implies an opinion by FTSE Russell as to the advisability of investment in any or all of the Notes upon which the RTY is based.

FTSE Russell’s only relationship to Canadian Imperial Bank of Commerce and its affiliates is the licensing of certain trademarks and trade names of FTSE Russell and of the RTY which is determined, composed and calculated by FTSE Russell without regard to Canadian Imperial Bank of Commerce and its affiliates or the securities. FTSE Russell is not responsible for and has not reviewed the Notes nor any associated literature or publications and FTSE Russell makes no representation or warranty, express or implied, as to their accuracy or completeness, or otherwise. FTSE Russell reserves the right, at any time and without notice, to alter, amend, terminate or in any way change the RTY. FTSE Russell has no obligation or liability in connection with the administration, marketing or trading of the securities.

FTSE RUSSELL DOES NOT GUARANTEE THE ACCURACY AND/OR THE COMPLETENESS OF THE RUSSELL 2000 INDEX OR ANY DATA INCLUDED THEREIN AND FTSE RUSSELL SHALL HAVE NO LIABILITY FOR ANY ERRORS, OMISSIONS, OR INTERRUPTIONS THEREIN. FTSE RUSSELL MAKES NO WARRANTY, EXPRESS OR IMPLIED, AS TO RESULTS TO BE OBTAINED BY CANADIAN IMPERIAL BANK OF COMMERCE AND/OR ITS AFFILIATES, INVESTORS, OWNERS OF THE NOTES, OR ANY OTHER PERSON OR ENTITY FROM THE USE OF THE RUSSELL 2000 INDEX OR ANY DATA INCLUDED THEREIN. FTSE RUSSELL MAKES NO EXPRESS OR IMPLIED WARRANTIES, AND EXPRESSLY DISCLAIMS ALL WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR USE WITH RESPECT TO THE RUSSELL 2000 INDEX OR ANY DATA INCLUDED THEREIN. WITHOUT LIMITING ANY OF THE FOREGOING, IN NO EVENT SHALL FTSE RUSSELL HAVE ANY LIABILITY FOR ANY SPECIAL, PUNITIVE, INDIRECT, OR CONSEQUENTIAL DAMAGES (INCLUDING LOST PROFITS), EVEN IF NOTIFIED OF THE POSSIBILITY OF SUCH DAMAGES.”

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