The information in this preliminary pricing supplement is not complete and may be changed. This preliminary pricing supplement is not an offer to sell nor does it seek an offer to buy these securities in any jurisdiction where the offer or sale is not permitted.

Subject to completion dated September 14, 2017

September     , 2017 Registration Statement Nos. 333-209682 and 333-209682-01; Rule424(b)(2)

JPMorgan Chase Financial Company LLC
Structured Investments

Auto Callable Contingent Interest Notes Linked to the Least Performing of the iShares^® MSCI Emerging Markets ETF, the Russell 2000^® Index and the EURO STOXX 50^® Index due March 25, 2019

Fully and Unconditionally Guaranteed by JPMorgan Chase & Co.

● The notes are designed for investors who seek a Contingent Interest Payment with respect to each Review Date for which the closing value of each of the iShares^® MSCI Emerging Markets ETF, the Russell 2000^® Index and the EURO STOXX 50^® Index, which we refer to as the Underlyings, is greater than or equal to 70.00% of its Initial Value, which we refer to as an Interest Barrier.

● The notes will be automatically called if the closing value of each Underlying on any Review Date (other than the final Review Date) is greater than or equal to its Initial Value.

● Investors in the notes should be willing to accept the risk of losing some or all of their principal and the risk that no Contingent Interest Payment may be made with respect to some or all Review Dates.

● Investors should also be willing to forgo fixed interest and dividend payments, in exchange for the opportunity to receive Contingent Interest Payments.

● The notes are unsecured and unsubordinated obligations of JPMorgan Chase Financial Company LLC, which we refer to as JPMorgan Financial, the payment on which is fully and unconditionally guaranteed by JPMorgan Chase & Co. Any payment on the notes is subject to the credit risk of JPMorgan Financial, as issuer of the notes, and the credit risk of JPMorgan Chase & Co., as guarantor of the notes.

● Payments on the notes are not linked to a basket composed of the Underlyings. Payments on the notes are linked to the performance of each of the Underlyings individually, as described below.

● Minimum denominations of $1,000 and integral multiples thereof

● The notes are expected to price on or about September 20, 2017 and are expected to settle on or about September 25, 2017.

● CUSIP: 46647M7K3

Investing in the notes involves a number of risks. See “Risk Factors” beginning on page PS-10 of the accompanying product supplement, “Risk Factors” beginning on page US-2 of the accompanying underlying supplement and “Selected Risk Considerations” beginning on page PS-4 of this pricing supplement.

Neither the Securities and Exchange Commission (the “SEC”) nor any state securities commission has approved or disapproved of the notes or passed upon the accuracy or the adequacy of this pricing supplement or the accompanying product supplement, underlying supplement, prospectus supplement and prospectus. Any representation to the contrary is a criminal offense.

	Price to Public (1)	Fees and Commissions (2)	Proceeds to Issuer
Per note	$1,000	$	$
Total	$	$	$
(1) See “Supplemental Use of Proceeds” in this pricing supplement for information about the components of the price to public of the notes. (2) J.P. Morgan Securities LLC, which we refer to as JPMS, acting as agent for JPMorgan Financial, will pay all of the selling commissions it receives from us to other affiliated or unaffiliated dealers. If the notes priced today, the selling commissions would be approximately $15.00 per $1,000 principal amount note and in no event will these selling commissions exceed $21.75 per $1,000 principal amount note. See “Plan of Distribution (Conflicts of Interest)” in the accompanying product supplement.

If the notes priced today, the estimated value of the notes would be approximately $964.10 per $1,000 principal amount note. The estimated value of the notes, when the terms of the notes are set, will be provided in the pricing supplement and will not be less than $940.00 per $1,000 principal amount note. See “The Estimated Value of the Notes” in this pricing supplement for additional information.

The notes are not bank deposits, are not insured by the Federal Deposit Insurance Corporation or any other governmental agency and are not obligations of, or guaranteed by, a bank.

Pricing supplement to product supplement no. 4-I dated April 15, 2016, underlying supplement no. 1-I dated April 15, 2016 and the prospectus and prospectus supplement, each dated April 15, 2016

Key Terms

Issuer: JPMorgan Chase Financial Company LLC, an indirect, wholly owned finance subsidiary of JPMorgan Chase & Co. Guarantor: JPMorgan Chase & Co. Underlyings: The iShares^® MSCI Emerging Markets ETF (Bloomberg ticker: EEM) (the “Fund”) and the Russell 2000^® Index (Bloomberg ticker: RTY) and the EURO STOXX 50^® Index (Bloomberg ticker: SX5E) (each of the Russell 2000^® Index and the EURO STOXX 50^® Index, an “Index” and collectively, the “Indices”) (each of the Indices and the Fund, an “Underlying” and collectively, the “Underlyings”) Contingent Interest Payments: If the notes have not been automatically called and the closing value of each Underlying on any Review Date is greater than or equal to its Interest Barrier, you will receive on the applicable Interest Payment Date for each $1,000 principal amount note a Contingent Interest Payment equal to at least $21.875 (equivalent to a Contingent Interest Rate of at least 8.75% per annum, payable at a rate of at least 2.1875% per quarter) (to be provided in the pricing supplement). If the closing value of any Underlying on any Review Date is less than its Interest Barrier, no Contingent Interest Payment will be made with respect to that Review Date. Contingent Interest Rate: At least 8.75% per annum, payable at a rate of at least 2.1875% per quarter (to be provided in the pricing supplement) Interest Barrier/Trigger Value: With respect to each Underlying, 70.00% of its Initial Value Pricing Date: On or about September 20, 2017 Original Issue Date (Settlement Date): On or about September 25, 2017 Review Dates*: December 20, 2017, March 20, 2018, June 20, 2018, September 20, 2018, December 20, 2018 and March 20, 2019 (final Review Date) Interest Payment Dates*: December 26, 2017, March 23, 2018, June 25, 2018, September 25, 2018, December 26, 2018 and the Maturity Date Maturity Date*: March 25, 2019 Call Settlement Date*: If the notes are automatically called on any Review Date (other than the final Review Date), the first Interest Payment Date immediately following that Review Date * Subject to postponement in the event of a market disruption event and as described under “General Terms of Notes — Postponement of a Determination Date — Notes Linked to Multiple Underlyings” and “General Terms of Notes — Postponement of a Payment Date” in the accompanying product supplement Automatic Call: If the closing value of one share of each Reference Stock on any Review Date (other than the final Review Date) is greater than or equal to its Initial Value, the notes will be automatically called for a cash payment, for each $1,000 principal amount note, equal to (a) $1,000 plus (b) the Contingent Interest Payment applicable to that Review Date, payable on the applicable Call Settlement Date. No further payments will be made on the notes. Payment at Maturity: If the notes have not been automatically called and (i) the Final Value of each Underlying is greater than or equal to its Initial Value or (ii) a Trigger Event has not occurred, you will receive a cash payment at maturity, for each $1,000 principal amount note, equal to (a) $1,000 plus (b) the Contingent Interest Payment applicable to the final Review Date. If the notes have not been automatically called and (i) the Final Value of each Underlying is less than its Initial Value and (ii) a Trigger Event has occurred, your payment at maturity per $1,000 principal amount note, in addition to any Contingent Interest Payment, will be calculated as follows: $1,000 + ($1,000 × Least Performing Underlying Return) If the notes have not been automatically called and (i) the Final Value of any Underlying is less than its Initial Value and (ii) a Trigger Event has occurred, you will lose some or all of your principal amount at maturity. Trigger Event: A Trigger Event occurs if, on any day during the Monitoring Period, the closing value of any Underlying is less than its Trigger Value Monitoring Period: The period from but excluding the Pricing Date to and including the final Review Date Least Performing Underlying: The Underlying with the Least Performing Underlying Return Least Performing Underlying Return: The lowest of the Underlying Returns of the Underlyings Underlying Return: With respect to each Underlying, (Final Value – Initial Value)
Initial Value Initial Value: With respect to each Underlying, the closing value of that Underlying on the Pricing Date Final Value: With respect to each Underlying, the closing value of that Underlying on the final Review Date Share Adjustment Factor:The Share Adjustment Factor is referenced in determining the closing value of the Fund and is set equal to 1.0 on the Pricing Date. The Share Adjustment Factor is subject to adjustment upon the occurrence of certain events affecting the Fund. See “The Underlyings — Funds — Anti-Dilution Adjustments” in the accompanying product supplement for further information.  

PS-1| Structured Investments Auto Callable Contingent Interest Notes Linked to the Least Performing of the iShares^® MSCI Emerging Markets ETF, the Russell 2000^® Index and the EURO STOXX 50^® Index

Supplemental Terms of the Notes

All references in this pricing supplement to the closing value of each Index mean the closing level of that Index as defined in the accompanying product supplement, and all references in this pricing supplement to the closing value of the Fund mean the closing price of one share of the Fund as defined in the accompanying product supplement.

How the Notes Work

Payments in Connection with Review Dates Preceding the Final Review Date

Payment at Maturity If the Notes Have Not Been Automatically Called

Total Contingent Interest Payments

The table below illustrates the hypothetical total Contingent Interest Payments per $1,000 principal amount note over the term of the notes based on a hypothetical Contingent Interest Rate of 8.75% per annum, depending on how many Contingent Interest Payments are made prior to automatic call or maturity. The actual Contingent Interest Rate will be provided in the pricing supplement and will be at least 8.75% per annum.

PS-2| Structured Investments Auto Callable Contingent Interest Notes Linked to the Least Performing of the iShares^® MSCI Emerging Markets ETF, the Russell 2000^® Index and the EURO STOXX 50^® Index

Number of Contingent Interest Payments	Total Contingent Interest Payments
6	$131.250
5	$109.375
4	$87.500
3	$65.625
2	$43.750
1	$21.875
0	$0.000

Hypothetical Payout Examples

The following examples illustrate payments on the notes linked to three hypothetical Underlyings, assuming a range of performances for the hypothetical Least Performing Underlying on the Review Dates. Each hypothetical payment set forth below assumes that the closing value of each Underlying that is not the Least Performing Underlying on each Review Date is greater than or equal to its Initial Value (and therefore its Interest Barrier and Trigger Value).

In addition, the hypothetical payments set forth below assume the following:

● an Initial Value for the Least Performing Underlying of 100.00;

● an Interest Barrier and a Trigger Value for the Least Performing Underlying of 70.00 (equal to 70.00% of its hypothetical Initial Value); and

● a Contingent Interest Rate of 8.75% per annum (payable at a rate of 2.1875% per quarter).

The hypothetical Initial Value of the Least Performing Underlying of 100.00 has been chosen for illustrative purposes only and may not represent a likely actual Initial Value of any Underlying.

The actual Initial Value of each Underlying will be the closing value of that Underlying on the Pricing Date and will be provided in the pricing supplement. For historical data regarding the actual closing values of each Underlying, please see the historical information set forth under “The Underlyings” in this pricing supplement.

Each hypothetical payment set forth below is for illustrative purposes only and may not be the actual payment applicable to a purchaser of the notes. The numbers appearing in the following examples have been rounded for ease of analysis.

Example 1 — Notes are automatically called on the first Review Date.

Date	Closing Value of Least Performing Underlying	Payment (per $1,000 principal amount note)
First Review Date	105.00	$1,021.875
	Total Payment	$1,021.875 (2.1875% return)

Because the closing value of each Underlying on the first Review Date is greater than or equal to its Initial Value, the notes will be automatically called for a cash payment, for each $1,000 principal amount note, of $1,021.875 (or $1,000 plus the Contingent Interest Payment applicable to the first Review Date), payable on the applicable Call Settlement Date. No further payments will be made on the notes.

Example 2 — Notes have NOT been automatically called, the Final Value of the Least Performing Underlying is greater than or equal to its Initial Value and a Trigger Event has occurred.

Date	Closing Value of Least Performing Underlying	Payment (per $1,000 principal amount note)
First Review Date	95.00	$21.875
Second Review Date	85.00	$21.875
Third through Fifth Review Dates	Less than Interest Barrier	$0
Final Review Date	105.00	$1,021.875
	Total Payment	$1,065.625 (6.5625% return)

Because the notes have not been automatically called and the Final Value of the Least Performing Underlying is greater than or equal to its Initial Value (and, therefore, its Interest Barrier), even though a Trigger Event has occurred, the payment at maturity, for each $1,000 principal amount note, will be $1,021.875 (or $1,000 plus the Contingent Interest Payment applicable to the final Review Date).

PS-3| Structured Investments Auto Callable Contingent Interest Notes Linked to the Least Performing of the iShares^® MSCI Emerging Markets ETF, the Russell 2000^® Index and the EURO STOXX 50^® Index

When added to the Contingent Interest Payments received with respect to the prior Review Dates, the total amount paid, for each $1,000 principal amount note, is $1,065.625.

Example 3 — Notes have NOT been automatically called, the Final Value of the Least Performing Underlying is less than its Initial Value and a Trigger Event has NOT occurred.

Date	Closing Value of Least Performing Underlying	Payment (per $1,000 principal amount note)
First Review Date	95.00	$21.875
Second Review Date	95.00	$21.875
Third through Fifth Review Dates	Less than Interest Barrier	$0
Final Review Date	70.00	$1,021.875
	Total Payment	$1,065.625 (6.5625% return)

Because the notes have not been automatically called, the Final Value of the Least Performing Underlying is greater than or equal to its Interest Barrier and a Trigger Event has not occurred, even though the Final Value of the Least Performing Underlying is less than its Initial Value, the payment at maturity, for each $1,000 principal amount note, will be $1,021.875 (or $1,000 plus the Contingent Interest Payment applicable to the final Review Date). When added to the Contingent Interest Payments received with respect to the prior Review Dates, the total amount paid, for each $1,000 principal amount note, is $1,065.625.

Example 4 — Notes have NOT been automatically called, the Final Value of the Least Performing Underlying is less than its Initial Value and its Interest Barrier and a Trigger Event has occurred.

Date	Closing Value of Least Performing Underlying	Payment (per $1,000 principal amount note)
First Review Date	55.00	$0
Second Review Date	45.00	$0
Third through Fifth Review Dates	Less than Interest Barrier	$0
Final Review Date	50.00	$500.00
	Total Payment	$500.00 (-50.00% return)

Because the notes have not been automatically called, the Final Value of the Least Performing Underlying is less than its Initial Value and its Interest Barrier, a Trigger Event has occurred and the Least Performing Underlying Return is -50.00%, the payment at maturity will be $500.00 per $1,000 principal amount note, calculated as follows:

$1,000 + [$1,000 × (-50.00%)] = $500.00

The hypothetical returns and hypothetical payments on the notes shown above apply only if you hold the notes for their entire term or until automatically called. These hypotheticals do not reflect the fees or expenses that would be associated with any sale in the secondary market. If these fees and expenses were included, the hypothetical returns and hypothetical payments shown above would likely be lower.

Selected Risk Considerations

An investment in the notes involves significant risks. These risks are explained in more detail in the “Risk Factors” sections of the accompanying product supplement and underlying supplement.

● YOUR INVESTMENT IN THE NOTES MAY RESULT IN A LOSS —
The notes do not guarantee any return of principal. If the notes have not been automatically called and (i) the Final Value of any Underlying is less than its Initial Value and (ii) a Trigger Event has occurred, you will lose 1% of the principal amount of your notes for every 1% that the Final Value of the Least Performing Underlying is less than its Initial Value. Accordingly, under these circumstances, you will lose some or all of your principal amount at maturity.

● THE NOTES DO NOT GUARANTEE THE PAYMENT OF INTEREST AND MAY NOT PAY ANY INTEREST AT ALL —
If the notes have not been automatically called, we will make a Contingent Interest Payment with respect to a Review Date only if the closing value of each Underlying on that Review Date is greater than or equal to its Interest Barrier. If the closing value of any Underlying on that Review Date is less than its Interest Barrier, no Contingent Interest Payment will be made with respect to that Review Date. Accordingly, if the closing value of any Underlying on each Review Date is less than its Interest Barrier, you will not receive any interest payments over the term of the notes.

PS-4| Structured Investments Auto Callable Contingent Interest Notes Linked to the Least Performing of the iShares^® MSCI Emerging Markets ETF, the Russell 2000^® Index and the EURO STOXX 50^® Index

● CREDIT RISKS OF JPMORGAN FINANCIAL AND JPMORGAN CHASE & CO. —
Investors are dependent on our and JPMorgan Chase & Co.’s ability to pay all amounts due on the notes. Any actual or potential change in our or JPMorgan Chase & Co.’s creditworthiness or credit spreads, as determined by the market for taking that credit risk, is likely to adversely affect the value of the notes. If we and JPMorgan Chase & Co. were to default on our payment obligations, you may not receive any amounts owed to you under the notes and you could lose your entire investment.

● AS A FINANCE SUBSIDIARY, JPMORGAN FINANCIAL HAS NO INDEPENDENT OPERATIONS AND HAS LIMITED ASSETS —
As a finance subsidiary of JPMorgan Chase & Co., we have no independent operations beyond the issuance and administration of our securities. Aside from the initial capital contribution from JPMorgan Chase & Co., substantially all of our assets relate to obligations of our affiliates to make payments under loans made by us or other intercompany agreements. As a result, we are dependent upon payments from our affiliates to meet our obligations under the notes. If these affiliates do not make payments to us and we fail to make payments on the notes, you may have to seek payment under the related guarantee by JPMorgan Chase & Co., and that guarantee will rank pari passu with all other unsecured and unsubordinated obligations of JPMorgan Chase & Co.

● THE APPRECIATION POTENTIAL OF THE NOTES IS LIMITED TO THE SUM OF ANY CONTINGENT INTEREST PAYMENTS THAT MAY BE PAID OVER THE TERM OF THE NOTES,
regardless of any appreciation in the value of any Underlying, which may be significant. You will not participate in any appreciation in the value of any Underlying.

● POTENTIAL CONFLICTS —
We and our affiliates play a variety of roles in connection with the notes. In performing these duties, our and JPMorgan Chase & Co.’s economic interests are potentially adverse to your interests as an investor in the notes. It is possible that hedging or trading activities of ours or our affiliates in connection with the notes could result in substantial returns for us or our affiliates while the value of the notes declines. Please refer to “Risk Factors — Risks Relating to Conflicts of Interest” in the accompanying product supplement.

● YOU ARE EXPOSED TO THE RISK OF DECLINE IN THE VALUE OF EACH UNDERLYING—
Payments on the notes are not linked to a basket composed of the Underlyings and are contingent upon the performance of each individual Underlying. Poor performance by any of the Underlyings over the term of the notes may result in the notes not being automatically called on a Review Date, may negatively affect whether you will receive a Contingent Interest Payment on any Interest Payment Date and your payment at maturity and will not be offset or mitigated by positive performance by any Underlying.

● YOUR PAYMENT AT MATURITY WILL BE DETERMINED BY THE LEAST PERFORMING UNDERLYING.

● THE BENEFIT PROVIDED BY THE TRIGGER VALUE MAY TERMINATE ON ANY DAY DURING THE MONITORING PERIOD—
If, on any day during the Monitoring Period, the closing value of any Underlying is less than its Trigger Value (i.e., a Trigger Event occurs) and the notes have not been automatically called, the benefit provided by the Trigger Value will terminate and you will be fully exposed to any depreciation in the closing value of the Least Performing Underlying. You will be subject to this potential loss of principal even if that Underlying subsequently recovers such that the closing value of that Underlying is greater than or equal to its Trigger Value.

● THE AUTOMATIC CALL FEATURE MAY FORCE A POTENTIAL EARLY EXIT —
If your notes are automatically called, the term of the notes may be reduced to as short as approximately three months and you will not receive any Contingent Interest Payments after the applicable Call Settlement Date. There is no guarantee that you would be able to reinvest the proceeds from an investment in the notes at a comparable return and/or with a comparable interest rate for a similar level of risk. Even in cases where the notes are called before maturity, you are not entitled to any fees and commissions described on the front cover of this pricing supplement.

● YOU WILL NOT RECEIVE DIVIDENDS ON THE FUND OR THE SECURITIES INCLUDED IN OR HELD BY ANY UNDERLYING OR HAVE ANY RIGHTS WITH RESPECT TO THE FUND OR THOSE SECURITIES.

● AN INVESTMENT IN THE NOTES IS SUBJECT TO RISKS ASSOCIATED WITH SMALL CAPITALIZATION STOCKS WITH RESPECT TO THE RUSSELL 2000^® INDEX —
Small capitalization companies may be less able to withstand adverse economic, market, trade and competitive conditions relative to larger companies. Small capitalization companies are less likely to pay dividends on their stocks, and the presence of a dividend payment could be a factor that limits downward stock price pressure under adverse market conditions.

● NON-U.S. SECURITIES RISK WITH RESPECT TO THE EURO STOXX 50^® INDEX AND THE FUND —
The equity securities included in the EURO STOXX 50^® Index or held by the Fund have been issued by non-U.S. companies. Investments in securities linked to the value of such non-U.S. equity securities involve risks associated with the securities markets in the home countries of the issuers of those non-U.S. equity securities. Also, there is generally less publicly available information about companies in some of these jurisdictions than there is about U.S. companies that are subject to the reporting requirements of the SEC.

● NO DIRECT EXPOSURE TO FLUCTUATIONS IN FOREIGN EXCHANGE RATES WITH RESPECT TO THE EURO STOXX 50^® INDEX —
The value of your notes will not be adjusted for exchange rate fluctuations between the U.S. dollar and the currencies upon which the equity securities included in the EURO STOXX 50^® Index are based, although any currency fluctuations could affect the performance of the EURO STOXX 50^® Index.

PS-5| Structured Investments Auto Callable Contingent Interest Notes Linked to the Least Performing of the iShares^® MSCI Emerging Markets ETF, the Russell 2000^® Index and the EURO STOXX 50^® Index

● THERE ARE RISKS ASSOCIATED WITH THE FUND—
The Fund is subject to management risk, which is the risk that the investment strategies of the Fund’s investment adviser, the implementation of which is subject to a number of constraints, may not produce the intended results. These constraints could adversely affect the market price of the shares of the Fund and, consequently, the value of the notes.

● THE PERFORMANCE AND MARKET VALUE OF THE FUND, PARTICULARLY DURING PERIODS OF MARKET VOLATILITY, MAY NOT CORRELATE WITH THE PERFORMANCE OF THE FUND’S UNDERLYING INDEX AS WELL AS THE NET ASSET VALUE PER SHARE —
The Fund does not fully replicate its Underlying Index (as defined under “The Underlyings” below) and may hold securities different from those included in its Underlying Index. In addition, the performance of the Fund will reflect additional transaction costs and fees that are not included in the calculation of its Underlying Index. All of these factors may lead to a lack of correlation between the performance of the Fund and its Underlying Index. In addition, corporate actions with respect to the equity securities underlying the Fund (such as mergers and spin-offs) may impact the variance between the performances of the Fund and its Underlying Index. Finally, because the shares of the Fund are traded on a securities exchange and are subject to market supply and investor demand, the market value of one share of the Fund may differ from the net asset value per share of the Fund.
During periods of market volatility, securities underlying the Fund may be unavailable in the secondary market, market participants may be unable to calculate accurately the net asset value per share of the Fund and the liquidity of the Fund may be adversely affected. This kind of market volatility may also disrupt the ability of market participants to create and redeem shares of the Fund. Further, market volatility may adversely affect, sometimes materially, the prices at which market participants are willing to buy and sell shares of the Fund. As a result, under these circumstances, the market value of shares of the Fund may vary substantially from the net asset value per share of the Fund. For all of the foregoing reasons, the performance of the Fund may not correlate with the performance of its Underlying Index as well as the net asset value per share of the Fund, which could materially and adversely affect the value of the notes in the secondary market and/or reduce any payment on the notes.

● THE NOTES ARE SUBJECT TO EMERGING MARKETS RISK WITH RESPECT TO THE FUND—
The equity securities held by the Fund have been issued by non-U.S. companies located in emerging markets countries. Countries with emerging markets may have relatively unstable governments, may present the risks of nationalization of businesses, restrictions on foreign ownership and prohibitions on the repatriation of assets, and may have less protection of property rights than more developed countries. The economies of countries with emerging markets may be based on only a few industries, may be highly vulnerable to changes in local or global trade conditions, and may suffer from extreme and volatile debt burdens or inflation rates. Local securities markets may trade a small number of securities and may be unable to respond effectively to increases in trading volume, potentially making prompt liquidation of holdings difficult or impossible at times.

● THE NOTES ARE SUBJECT TO CURRENCY EXCHANGE RISK WITH RESPECT TO THE FUND—
Because the prices of the equity securities held by the Fund are converted into U.S. dollars for purposes of calculating the net asset value of the Fund, holders of the notes will be exposed to currency exchange rate risk with respect to each of the currencies in which the equity securities held by the Fund trade. Your net exposure will depend on the extent to which those currencies strengthen or weaken against the U.S. dollar and the relative weight of equity securities held by the Fund denominated in each of those currencies. If, taking into account the relevant weighting, the U.S. dollar strengthens against those currencies, the price of the Fund will be adversely affected and any payment on the notes may be reduced.

● THE ANTI-DILUTION PROTECTION FOR THE FUND IS LIMITED —
The calculation agent will make adjustments to the Share Adjustment Factor for certain events affecting the shares of the Fund. However, the calculation agent will not make an adjustment in response to all events that could affect the shares of the Fund. If an event occurs that does not require the calculation agent to make an adjustment, the value of the notes may be materially and adversely affected.

● THE RISK OF THE CLOSING VALUE OF AN UNDERLYING FALLING BELOW ITS INTEREST BARRIER OR TRIGGER VALUE IS GREATER IF THE VALUE OF THAT UNDERLYING IS VOLATILE.

● LACK OF LIQUIDITY—
The notes will not be listed on any securities exchange. Accordingly, the price at which you may be able to trade your notes is likely to depend on the price, if any, at which JPMS is willing to buy the notes. You may not be able to sell your notes. The notes are not designed to be short-term trading instruments. Accordingly, you should be able and willing to hold your notes to maturity.

● THE FINAL TERMS AND VALUATION OF THE NOTES WILL BE PROVIDED IN THE PRICING SUPPLEMENT —
You should consider your potential investment in the notes based on the minimums for the estimated value of the notes and the Contingent Interest Rate.

● THE ESTIMATED VALUE OF THE NOTES WILL BE LOWER THAN THE ORIGINAL ISSUE PRICE (PRICE TO PUBLIC) OF THE NOTES —
The estimated value of the notes is only an estimate determined by reference to several factors. The original issue price of the notes will exceed the estimated value of the notes because costs associated with selling, structuring and hedging the notes are included in the original issue price of the notes. These costs include the selling commissions, the projected profits, if any, that our affiliates expect to realize for assuming risks inherent in hedging our obligations under the notes and the estimated cost of hedging our obligations under the notes. See “The Estimated Value of the Notes” in this pricing supplement.

● THE ESTIMATED VALUE OF THE NOTES DOES NOT REPRESENT FUTURE VALUES OF THE NOTES AND MAY DIFFER FROM OTHERS’ ESTIMATES —
See “The Estimated Value of the Notes” in this pricing supplement.

PS-6| Structured Investments Auto Callable Contingent Interest Notes Linked to the Least Performing of the iShares^® MSCI Emerging Markets ETF, the Russell 2000^® Index and the EURO STOXX 50^® Index

● THE ESTIMATED VALUE OF THE NOTES IS DERIVED BY REFERENCE TO AN INTERNAL FUNDING RATE —
The internal funding rate used in the determination of the estimated value of the notes is based on, among other things, our and our affiliates’ 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 the conventional fixed-rate debt of JPMorgan Chase & Co. The use of an internal funding rate and any potential changes to that rate may have an adverse effect on the terms of the notes and any secondary market prices of the notes. See “The Estimated Value of the Notes” in this pricing supplement.

● THE VALUE OF THE NOTES AS PUBLISHED BY JPMS (AND WHICH MAY BE REFLECTED ON CUSTOMER ACCOUNT STATEMENTS) MAY BE HIGHER THAN THE THEN-CURRENT ESTIMATED VALUE OF THE NOTES FOR A LIMITED TIME PERIOD —
We generally expect that some of the costs included in the original issue price of the notes will be partially paid back to you in connection with any repurchases of your notes by JPMS in an amount that will decline to zero over an initial predetermined period. See “Secondary Market Prices of the Notes” in this pricing supplement for additional information relating to this initial period. Accordingly, the estimated value of your notes during this initial period may be lower than the value of the notes as published by JPMS (and which may be shown on your customer account statements).

● SECONDARY MARKET PRICES OF THE NOTES WILL LIKELY BE LOWER THAN THE ORIGINAL ISSUE PRICE OF THE NOTES —
Any secondary market prices of the notes will likely be lower than the original issue price of the notes because, among other things, secondary market prices take into account our internal secondary market funding rates for structured debt issuances and, also, because secondary market prices (a) exclude selling commissions and (b) may exclude projected hedging profits, if any, and estimated hedging costs that are included in the original issue price of the notes. As a result, the price, if any, at which JPMS will be willing to buy the notes from you in secondary market transactions, if at all, is likely to be lower than the original issue price. Any sale by you prior to the Maturity Date could result in a substantial loss to you.

● SECONDARY MARKET PRICES OF THE NOTES WILL BE IMPACTED BY MANY ECONOMIC AND MARKET FACTORS —
The secondary market price of the notes during their term will be impacted by a number of economic and market factors, which may either offset or magnify each other, aside from the selling commissions, projected hedging profits, if any, estimated hedging costs and the values of the Underlyings. Additionally, independent pricing vendors and/or third party broker-dealers may publish a price for the notes, which may also be reflected on customer account statements. This price may be different (higher or lower) than the price of the notes, if any, at which JPMS may be willing to purchase your notes in the secondary market. See “Risk Factors — Risks Relating to the Estimated Value and Secondary Market Prices of the Notes — Secondary market prices of the notes will be impacted by many economic and market factors” in the accompanying product supplement.

PS-7| Structured Investments Auto Callable Contingent Interest Notes Linked to the Least Performing of the iShares^® MSCI Emerging Markets ETF, the Russell 2000^® Index and the EURO STOXX 50^® Index

The Underlyings

The Fund is an exchange-traded fund of iShares^®, Inc., a registered investment company, that seeks to track the investment results, before fees and expenses, of an index composed of large- and mid-capitalization emerging market equities, which we refer to as the Underlying Index with respect to the Fund. The Underlying Index for the Fund is currently the MSCI Emerging Markets Index. The MSCI Emerging Markets Index is a free float-adjusted market capitalization index that is designed to measure equity market performance of global emerging markets. For additional information about the Fund, see “Fund Descriptions — The iShares^® ETFs” in the accompanying underlying supplement.

The Russell 2000^® Index consists of the middle 2,000 companies included in the Russell 3000E^TM Index and, as a result of the index calculation methodology, consists of the smallest 2,000 companies included in the Russell 3000^® Index. The Russell 2000^® Index is designed to track the performance of the small capitalization segment of the U.S. equity market. For additional information about the Russell 2000^® Index, see “Equity Index Descriptions — The Russell Indices” in the accompanying underlying supplement.

The EURO STOXX 50^® Index consists of 50 component stocks of market sector leaders from within the Eurozone. The EURO STOXX 50^® Index and STOXX are the intellectual property (including registered trademarks) of STOXX Limited, Zurich, Switzerland and/or its licensors (the “Licensors”), which are used under license. The notes based on the EURO STOXX 50^® Index are in no way sponsored, endorsed, sold or promoted by STOXX Limited and its Licensors and neither STOXX Limited nor any of its Licensors shall have any liability with respect thereto. For additional information about the EURO STOXX 50^® Index, see “Equity Index Descriptions — The EURO STOXX 50^® Index” in the accompanying underlying supplement.

Historical Information

The following graphs set forth the historical performance of each Underlying based on the weekly historical closing values from January 6, 2012 through September 8, 2017. The closing value of the Fund on September 13, 2017 was $45.20. The closing value of the Russell 2000^® Index on September 13, 2017 was 1,426.894. The closing value of the EURO STOXX 50^® Index on September 13, 2017 was 3,523.14. We obtained the closing values above and below from the Bloomberg Professional^® service (“Bloomberg”), without independent verification. The closing values of the Fund above and below may have been adjusted by Bloomberg for actions taken by the Fund, such as stock splits.

The historical closing values of each Underlying should not be taken as an indication of future performance, and no assurance can be given as to the closing value of any Underlying on the Pricing Date, any Review Date or any day during the Monitoring Period. There can be no assurance that the performance of the Underlyings will result in the return of any of your principal amount or the payment of any interest

Historical Performance of the iShares^® MSCI Emerging Markets ETF

Source: Bloomberg

PS-8| Structured Investments Auto Callable Contingent Interest Notes Linked to the Least Performing of the iShares^® MSCI Emerging Markets ETF, the Russell 2000^® Index and the EURO STOXX 50^® Index

Historical Performance of the Russell 2000^® Index

Source: Bloomberg

Historical Performance of the EURO STOXX 50^® Index

Source: Bloomberg

Tax Treatment

You should review carefully the section entitled “Material U.S. Federal Income Tax Consequences” in the accompanying product supplement no. 4-I. In determining our reporting responsibilities we intend to treat (i) the notes for U.S. federal income tax purposes as prepaid forward contracts with associated contingent coupons and (ii) any Contingent Interest Payments as ordinary income, as described in the section entitled “Material U.S. Federal Income Tax Consequences — Tax Consequences to U.S. Holders — Notes Treated as Prepaid Forward Contracts with Associated Contingent Coupons” in the accompanying product supplement. Based on the advice of Davis Polk & Wardwell LLP, our special tax counsel, we believe that this is a reasonable treatment, but that there are other reasonable treatments that the IRS or a court may adopt, in which case the timing and character of any income or loss on the notes could be materially affected. In addition, in 2007 Treasury and the IRS released a notice requesting comments on the U.S. federal income tax treatment of “prepaid forward contracts” and similar instruments. The notice focuses in particular on whether to require investors in these instruments to accrue income over the term of their investment. It also asks for comments on a number of related topics, including the character of income or loss with respect to these instruments and the relevance of factors such as the nature of the underlying property to which the instruments are linked. While the notice requests comments on appropriate transition rules and effective dates, any Treasury regulations or other guidance promulgated after consideration of these issues could materially affect the tax consequences of an investment in the notes, possibly with retroactive effect. You should consult your tax adviser regarding the U.S.

PS-9| Structured Investments Auto Callable Contingent Interest Notes Linked to the Least Performing of the iShares^® MSCI Emerging Markets ETF, the Russell 2000^® Index and the EURO STOXX 50^® Index

federal income tax consequences of an investment in the notes, including possible alternative treatments and the issues presented by this notice.

Non-U.S. Holders — Tax Considerations. The U.S. federal income tax treatment of Contingent Interest Payments is uncertain, and although we believe it is reasonable to take a position that Contingent Interest Payments are not subject to U.S. withholding tax (at least if an applicable Form W-8 is provided), a withholding agent may nonetheless withhold on these payments (generally at a rate of 30%, subject to the possible reduction of that rate under an applicable income tax treaty), unless income from your notes is effectively connected with your conduct of a trade or business in the United States (and, if an applicable treaty so requires, attributable to a permanent establishment in the United States). If you are not a United States person, you are urged to consult your tax adviser regarding the U.S. federal income tax consequences of an investment in the notes in light of your particular circumstances.

Section 871(m) of the Code and Treasury regulations promulgated thereunder (“Section 871(m)”) generally impose a 30% withholding tax (unless an income tax treaty applies) on dividend equivalents paid or deemed paid to Non-U.S. Holders with respect to certain financial instruments linked to U.S. equities or indices that include U.S. equities. Section 871(m) provides certain exceptions to this withholding regime, including for instruments linked to certain broad-based indices that meet requirements set forth in the applicable Treasury regulations (such an index, a “Qualified Index”). Additionally, the applicable regulations exclude from the scope of Section 871(m) instruments issued in 2017 that do not have a delta of one with respect to underlying securities that could pay U.S.-source dividends for U.S. federal income tax purposes (each an “Underlying Security”). Based on certain determinations made by us, we expect that Section 871(m) will not apply to the notes with regard to Non-U.S. Holders. Our determination is not binding on the IRS, and the IRS may disagree with this determination. Section 871(m) is complex and its application may depend on your particular circumstances, including whether you enter into other transactions with respect to an Underlying Security. If necessary, further information regarding the potential application of Section 871(m) will be provided in the pricing supplement for the notes. You should consult your tax adviser regarding the potential application of Section 871(m) to the notes.

FATCA. Withholding under legislation commonly referred to as “FATCA” could apply to payments with respect to the notes that are treated as U.S.-source “fixed or determinable annual or periodical” income (“FDAP Income”) for U.S. federal income tax purposes (such as interest, if the notes are recharacterized, in whole or in part, as debt instruments, or Contingent Interest Payments if they are otherwise treated as FDAP Income). If the notes are recharacterized, in whole or in part, as debt instruments, withholding could also apply to payments of gross proceeds of a taxable disposition, including an early redemption or redemption at maturity. However, under a recent IRS notice, this regime will not apply to payments of gross proceeds (other than any amount treated as FDAP Income) with respect to dispositions occurring before January 1, 2019. You should consult your tax adviser regarding the potential application of FATCA to the notes.

In the event of any withholding on the notes, we will not be required to pay any additional amounts with respect to amounts so withheld.

The Estimated Value of the Notes

The estimated value of the notes set forth on the cover of this pricing supplement is equal to the sum of the values of the following hypothetical components: (1) a fixed-income debt component with the same maturity as the notes, valued using the internal funding rate described below, and (2) the derivative or derivatives underlying the economic terms of the notes. The estimated value of the notes does not represent a minimum price at which JPMS would be willing to buy your notes in any secondary market (if any exists) at any time. The internal funding rate used in the determination of the estimated value of the notes is based on, among other things, our and our affiliates’ 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 the conventional fixed-rate debt of JPMorgan Chase & Co. For additional information, see “Selected Risk Considerations — The Estimated Value of the Notes Is Derived by Reference to an Internal Funding Rate” in this pricing supplement.

The value of the derivative or derivatives underlying the economic terms of the notes is derived from internal pricing models of our affiliates. These models are dependent on inputs such as the traded market prices of comparable derivative instruments and on various other inputs, some of which are market-observable, and which can include volatility, dividend rates, interest rates and other factors, as well as assumptions about future market events and/or environments. Accordingly, the estimated value of the notes is determined when the terms of the notes are set based on market conditions and other relevant factors and assumptions existing at that time.

The estimated value of the notes does not represent future values of the notes and may differ from others’ estimates. Different pricing models and assumptions could provide valuations for the notes that are greater than or less than the estimated value of the notes. 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, our or JPMorgan Chase & Co.’s creditworthiness, interest rate movements and other relevant factors, which may impact the price, if any, at which JPMS would be willing to buy notes from you in secondary market transactions.

The estimated value of the notes will be lower than the original issue price of the notes because costs associated with selling, structuring and hedging the notes are included in the original issue price of the notes. These costs include the selling commissions paid

PS-10| Structured Investments Auto Callable Contingent Interest Notes Linked to the Least Performing of the iShares^® MSCI Emerging Markets ETF, the Russell 2000^® Index and the EURO STOXX 50^® Index

to JPMS and other affiliated or unaffiliated dealers, the projected profits, if any, that our affiliates expect to realize for assuming risks inherent in hedging our obligations under the notes and the estimated cost of hedging our obligations under the notes. Because hedging our obligations entails risk and may be influenced by market forces beyond our control, this hedging may result in a profit that is more or less than expected, or it may result in a loss. A portion of the profits, if any, realized in hedging our obligations under the notes may be allowed to other affiliated or unaffiliated dealers, and we or one or more of our affiliates will retain any remaining hedging profits. See “Selected Risk Considerations — The Estimated Value of the Notes Will Be Lower Than the Original Issue Price (Price to Public) of the Notes” in this pricing supplement.

Secondary Market Prices of the Notes

For information about factors that will impact any secondary market prices of the notes, see “Risk Factors — Risks Relating to the Estimated Value and Secondary Market Prices of the Notes — Secondary market prices of the notes will be impacted by many economic and market factors” in the accompanying product supplement. In addition, we generally expect that some of the costs included in the original issue price of the notes will be partially paid back to you in connection with any repurchases of your notes by JPMS in an amount that will decline to zero over an initial predetermined period. These costs can include projected hedging profits, if any, and, in some circumstances, estimated hedging costs and our internal secondary market funding rates for structured debt issuances. This initial predetermined time period is intended to be the shorter of six months and one-half of the stated term of the notes. The length of any such initial period reflects the structure of the notes, whether our affiliates expect to earn a profit in connection with our hedging activities, the estimated costs of hedging the notes and when these costs are incurred, as determined by our affiliates. See “Selected Risk Considerations — The Value of the Notes as Published by JPMS (and Which May Be Reflected on Customer Account Statements) May Be Higher Than the Then-Current Estimated Value of the Notes for a Limited Time Period” in this pricing supplement.

Supplemental Use of Proceeds

The notes are offered to meet investor demand for products that reflect the risk-return profile and market exposure provided by the notes. See “How the Notes Work” and “Hypothetical Payout Examples” in this pricing supplement for an illustration of the risk-return profile of the notes and “The Underlyings” in this pricing supplement for a description of the market exposure provided by the notes.

The original issue price of the notes is equal to the estimated value of the notes plus the selling commissions paid to JPMS and other affiliated or unaffiliated dealers, plus (minus) the projected profits (losses) that our affiliates expect to realize for assuming risks inherent in hedging our obligations under the notes, plus the estimated cost of hedging our obligations under the notes.

Supplemental Plan of Distribution

We expect that delivery of the notes will be made against payment for the notes on or about the Original Issue Date set forth on the front cover of this pricing supplement, which will be the third business day following the expected Pricing Date of the notes (this settlement cycle being referred to as “T+3”). Under Rule 15c6-1 of the Securities Exchange Act of 1934, as amended, trades in the secondary market generally are required to settle in two business days, unless the parties to that trade expressly agree otherwise. Accordingly, purchasers who wish to trade notes on any date prior to two business days before delivery will be required to specify an alternate settlement cycle at the time of any such trade to prevent a failed settlement and should consult their own advisors.

Additional Terms Specific to the Notes

You may revoke your offer to purchase the notes at any time prior to the time at which we accept such offer by notifying the applicable agent. We reserve the right to change the terms of, or reject any offer to purchase, the notes prior to their issuance. In the event of any changes to the terms of the notes, we will notify you and you will be asked to accept such changes in connection with your purchase. You may also choose to reject such changes, in which case we may reject your offer to purchase.

You should read this pricing supplement together with the accompanying prospectus, as supplemented by the accompanying prospectus supplement relating to our Series A medium-term notes of which these notes are a part, and the more detailed information contained in the accompanying product supplement and the accompanying underlying supplement. This pricing supplement, together with the documents listed below, contains the terms of the notes and supersedes all other prior or contemporaneous oral statements as well as any other written materials including preliminary or indicative pricing terms, correspondence, trade ideas, structures for implementation, sample structures, fact sheets, brochures or other educational materials of ours. You should carefully consider, among other things, the matters set forth in the “Risk Factors” sections of the accompanying product supplement and the accompanying underlying supplement, as the notes involve risks not associated with conventional debt securities. We urge you to consult your investment, legal, tax, accounting and other advisers before you invest in the notes.

You may access these documents on the SEC website at www.sec.gov as follows (or if such address has changed, by reviewing our filings for the relevant date on the SEC website):

● Product supplement no. 4-I dated April 15, 2016:
http://www.sec.gov/Archives/edgar/data/19617/000095010316012644/crt_dp64831-424b2.pdf

PS-11| Structured Investments Auto Callable Contingent Interest Notes Linked to the Least Performing of the iShares^® MSCI Emerging Markets ETF, the Russell 2000^® Index and the EURO STOXX 50^® Index

● Underlying supplement no. 1-I dated April 15, 2016:
http://www.sec.gov/Archives/edgar/data/19617/000095010316012649/crt-dp64909_424b2.pdf

● Prospectus supplement and prospectus, each dated April 15, 2016:
http://www.sec.gov/Archives/edgar/data/19617/000095010316012636/crt_dp64952-424b2.pdf

Our Central Index Key, or CIK, on the SEC website is 1665650, and JPMorgan Chase & Co.’s CIK is 19617. As used in this pricing supplement, “we,” “us” and “our” refer to JPMorgan Financial.

PS-12| Structured Investments Auto Callable Contingent Interest Notes Linked to the Least Performing of the iShares^® MSCI Emerging Markets ETF, the Russell 2000^® Index and the EURO STOXX 50^® Index