April 2024

Amendment No. 1 dated April 5, 2024 relating to

Preliminary Pricing Supplement No. 1,660

Registration Statement Nos. 333-275587; 333-275587-01

Dated April 1, 2024

Filed pursuant to Rule 424(b)(2)

Morgan Stanley Finance LLC

Structured Investments

Opportunities in U.S. Equities

Jump Securities with Auto-Callable Feature due April 8, 2027

All Payments on the Securities Based on the Worst Performing of the iShares® Russell 2000 Value ETF and the iShares® S&P 500 Value ETF

Fully and Unconditionally Guaranteed by Morgan Stanley

Principal at Risk Securities

The securities offered are unsecured obligations of Morgan Stanley Finance LLC (“MSFL”), fully and unconditionally guaranteed by Morgan Stanley, and have the terms described in the accompanying product supplement, index supplement and prospectus, as supplemented or modified by this document. The securities do not guarantee the repayment of principal and do not provide for the regular payment of interest. The securities will be automatically redeemed if the closing price of each of the iShares® Russell 2000 Value ETF and the iShares® S&P 500 Value ETF which we refer to as the underlying shares, on the first determination date is greater than or equal to 100% of its respective initial share price, which we refer to as the respective call threshold level, for an early redemption payment of at least $1,122.5‬0 per security (to be determined on the pricing date), as described below. No further payments will be made on the securities once they have been redeemed. At maturity, if the securities have not previously been redeemed and the final share price of each of the underlying shares is greater than or equal to its respective initial share price, investors will receive the stated principal amount of their investment plus a return reflecting 300% of the upside performance of the worst performing underlying shares. If the securities have not previously been redeemed and the final share price of either of the underlying shares isless than its respective initial share price but the final share price of each of the underlying shares isgreater than or equal to 80% of its respective initial share price, which we refer to as the respective downside threshold level, investors will receive a payment at maturity of $1,000 per $1,000 security. However, if the securities are not redeemed prior to maturity and the final share price of either of the underlying shares is less thanits respective downside threshold level, investors will be exposed to the decline in the worst performing underlying shares on a 1-to-1 basis, and will receive a payment at maturity that is less than 80% of the stated principal amount of the securities and could be zero. Accordingly, investors in the securities must be willing to accept the risk of losing their entire initial investment. The securities are for investors who are willing to risk their principal and forgo current income in exchange for the possibility of receiving an early redemption payment if each of the underlying shares closes at or above the respective call threshold level on the first determination date and the potential upside exposure to the worst performing underlying shares at maturity. Because all payments on the securities are based on the worst performing of the underlying shares, a decline beyond the respective downside threshold level of either of the underlying shares will result in a significant loss of your investment, even if the other underlying shares has appreciated or has not declined as much.The securities are notes issued as part ofMSFL’s Series A Global Medium-Term Notes program.

All payments are subject to our credit risk. If we default on our obligations, you could lose some or all of your investment. These securities are not secured obligations and you will not have any security interest in, or otherwise have any access to, any underlying reference asset or assets.

SUMMARY TERMS
Issuer:	Morgan Stanley Finance LLC
Guarantor:	Morgan Stanley
Underlying shares:	iShares® Russell 2000 Value ETF (the “IWN Shares”) and iShares® S&P 500 Value ETF (the “IVE Shares”)
Aggregate principal amount:	$
Stated principal amount:	$1,000 per security
Issue price:	$1,000 per security
Pricing date:	April 5, 2024
Original issue date:	April 12, 2024 (5 business days after the pricing date)
Maturity date:	April 8, 2027
Early redemption:	If, on the first determination date, the closing price of each of the underlying shares is greater than or equal to its respective call threshold level, the securities will be automatically redeemed for the early redemption payment on the early redemption date. The securities will not be redeemed early on the early redemption date if the closing price of either of the underlying shares is below its respective call threshold level on the first determination date.
Early redemption payment:	The early redemption payment will be an amount in cash per stated principal amount of at least $1,122.50 (to be determined on the pricing date), as set forth under “Determination Dates, Early Redemption Date and Early Redemption Payment” below. No further payments will be made on the securities once they have been redeemed.
Determination dates:	See “Determination Dates, Early Redemption Date and Early Redemption Payment” below. The determination dates are subject to postponement for non-trading days and certain market disruption events.
Early redemption date:	See “Determination Dates, Early Redemption Date and Early Redemption Payment” below. If such day is not a business day, the early redemption payment, if payable, will be paid on the next business day, and no adjustment will be made to the early redemption payment.
Downside threshold level:	With respect to the IWN Shares, $ , which is 80% of its initial share price With respect to the IVE Shares, $ , which is 80% of its initial share price
Call threshold level:	With respect to the IWN Shares, $ , which is 100% of its initial share price With respect to the IVE Shares, $ , which is 100% of its initial share price
Payment at maturity:	If the securities have not previously been redeemed, you will receive at maturity a cash payment per security as follows: ●If the final share price of each of the underlying shares is greater than or equal to its respective initial share price: $1,000 + ($1,000 × share percent change of the worst performing underlying shares × 300%) ●If the final share price of either of the underlying shares isless than its respective initial share price but the final share price of each of the underlying shares is greater than or equal to its respective downside threshold level: $1,000 ●If the final share price of either of the underlying shares is less than its respective downside threshold level: $1,000 × share performance factor of the worst performing underlying shares Under these circumstances, you will lose more than 20%, and possibly all, of your investment.
	Terms continued on the following page
Agent:	Morgan Stanley & Co. LLC (“MS & Co.”), an affiliate of MSFL and a wholly owned subsidiary of Morgan Stanley. See “Supplemental information regarding plan of distribution; conflicts of interest.”
Estimated value on the pricing date:	Approximately $971.50 per security, or within $30.00 of that estimate. See “Investment Summary” beginning on page 3.
Commissions and issue price:	Price to public(1)	Agent’s commissions and fees(2)	Proceeds to us(3)
Per security	$1,000	$	$
Total	$	$	$

(1)The securities will be sold only to investors purchasing the securities in fee-based advisory accounts.

(2)MS & Co. expects to sell all of the securities that it purchases from us to an unaffiliated dealer at a price of $ per security, for further sale to certain fee-based advisory accounts at the price to public of $1,000 per security. MS & Co. will not receive a sales commission with respect to the securities. See “Supplemental information regarding plan of distribution; conflicts of interest.” For additional information, see “Plan of Distribution (Conflicts of Interest)” in the accompanying product supplement.

(3)See “Use of proceeds and hedging” on page 22.

The securities involve risks not associated with an investment in ordinary debt securities. See “Risk Factors” beginning on page 9.

The Securities and Exchange Commission and state securities regulators have not approved or disapproved these securities, or determined if this document or the accompanying product supplement, index supplement and prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

The securities are not deposits or savings accounts and are not insured by the Federal Deposit Insurance Corporation or any other governmental agency or instrumentality, nor are they obligations of, or guaranteed by, a bank.

You should read this document together with the related product supplement, index supplement and prospectus, each of which can be accessed via the hyperlinks below. When you read the accompanying product supplement and index supplement, please note that all references in such supplements to the prospectus dated November 16, 2023, or to any sections therein, should refer instead to the accompanying prospectus dated February 22, 2024 or to the corresponding sections of such prospectus, as applicable. Please also see “Additional Terms of the Securities” and “Additional Information About the Securities” at the end of this document.

As used in this document, “we,” “us” and “our” refer to Morgan Stanley or MSFL, or Morgan Stanley and MSFL collectively, as the context requires.

Product Supplement for Auto-Callable Securities dated November 16, 2023Index Supplement dated November 16, 2023Prospectus dated February 22, 2024

Morgan Stanley Finance LLC

Jump Securities with Auto-Callable Feature due April 8, 2027

All Payments on the Securities Based on the Worst Performing of the iShares® Russell 2000 Value ETF and the iShares® S&P 500 Value ETF

Principal at Risk Securities

Terms continued from previous page:
Initial share price:	With respect to the IWN Shares, $ , which is its closing price on the pricing date With respect to the IVE Shares, $ , which is its closing price on the pricing date
Determination closing price:	With respect to each of the underlying shares, on any trading day, the closing price of such underlying shares on such day multiplied by the applicable adjustment factor on such day
Final share price:	With respect to each of the underlying shares, the closing price of such underlying shares on the final determination date multiplied by the adjustment factor on such date
Adjustment factor:	With respect to each of the underlying shares, 1.0, subject to adjustment in the event of certain events affecting such underlying shares
Worst performing underlying shares:	The underlying share with the lesser share percent change
Share percent change:	With respect to each of the underlying shares, (final share price – initial share price) / initial share price
Share performance factor:	With respect to each of the underlying shares, the final share price divided by the initial share price
CUSIP / ISIN:	61776LNN3 / US61776LNN37
Listing:	The securities will not be listed on any securities exchange.

Determination Dates, Early Redemption Date and Early Redemption Payment

Determination Dates		Early Redemption Date		Early Redemption Payment (per $1,000 Security)*
1st determination date:	4/15/2025	Early redemption date:	4/18/2025	At least $1,122.50
Final determination date:	4/5/2027	See “Maturity date” above.		See “Payment at maturity” above.

*The actual early redemption payment will be determined on the pricing date and will be an amount in cash per stated principal amount corresponding to at least $1,122.50.

April 2024Page 2

Morgan Stanley Finance LLC

Jump Securities with Auto-Callable Feature due April 8, 2027

All Payments on the Securities Based on the Worst Performing of the iShares® Russell 2000 Value ETF and the iShares® S&P 500 Value ETF

Principal at Risk Securities

Investment Summary

Jump Securities with Auto-Callable Feature

Principal at Risk Securities

The Jump Securities with Auto-Callable Feature due April 8, 2027 All Payments on the Securities Based on the Worst Performing of the iShares® Russell 2000 Value ETF and the iShares® S&P 500 Value ETF (the “securities”) do not provide for the regular payment of interest. Instead, the securities will be automatically redeemed if the closing price of each of the iShares® Russell 2000 Value ETF and the iShares® S&P 500 Value ETF on the first determination date is greater than or equal to its respective call threshold level, for an early redemption payment of at least $1,122.5‬0 per security (to be determined on the pricing date), as described below. No further payments will be made on the securities once they have been redeemed. At maturity, if the securities have not previously been redeemed and the final share price of each of the underlying shares is greater than or equal to its respective initial share price, investors will receive the stated principal amount of their investment plus a return reflecting 300% of the upside performance of the worst performing underlying shares. If the securities have not previously been redeemed and the final share price of either of the underlying shares is less than its respective initial share price but the final share price of each of the underlying shares is greater than or equal to its respective downside threshold level, investors will receive a payment of maturity of $1,000 per $1,000 security. However, if the securities are not redeemed prior to maturity and the final share price of either of the underlying shares is less thanits respective downside threshold level, investors will be exposed to the decline in the worst performing underlying shares on a 1-to-1 basis, and will receive a payment at maturity that is less than 80% of the stated principal amount of the securities and could be zero. Accordingly, investors in the securities must be willing to accept the risk of losing their entire initial investment.

Maturity:	Approximately 3 years
Automatic early redemption:	If, on the first determination date, the closing price of each of the underlying shares is greater than or equal to its respective call threshold level, the securities will be automatically redeemed for the early redemption payment on the early redemption date.
Early redemption payment:	The early redemption payment will be an amount in cash per stated principal amount, as follows*: ●1st determination date: At least $1,122.50 *The actual early redemption payment will be determined on the pricing date. No further payments will be made on the securities once they have been redeemed.
Payment at maturity:	If the securities have not previously been redeemed, you will receive at maturity a cash payment per security as follows: ●If the final share price of each of the underlying shares is greater than or equal to its respective initial share price: $1,000 + ($1,000 × share percent change of the worst performing underlying shares × 300%) ●If the final share price of either of the underlying shares is less than its respective initial share price but the final share price of each of the underlying shares is greater than or equal to its respective downside threshold level: $1,000 ●If the final share price of either of the underlying shares is less than its respective downside threshold level: $1,000 × share performance factor of the worst performing underlying shares Under these circumstances, investors will lose a significant portion or all of their investment. Accordingly,investors in the securities must be willing to accept the risk of losing their entire initial investment.

April 2024Page 3

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Jump Securities with Auto-Callable Feature due April 8, 2027

All Payments on the Securities Based on the Worst Performing of the iShares® Russell 2000 Value ETF and the iShares® S&P 500 Value ETF

Principal at Risk Securities

The original issue price of each security is $1,000. This price includes costs associated with issuing, selling, structuring and hedging the securities, which are borne by you, and, consequently, the estimated value of the securities on the pricing date will be less than $1,000. We estimate that the value of each security on the pricing date will be approximately $971.50, or within $30.00 of that estimate. Our estimate of the value of the securities as determined on the pricing date will be set forth in the final pricing supplement.

What goes into the estimated value on the pricing date?

In valuing the securities on the pricing date, we take into account that the securities comprise both a debt component and a performance-based component linked to the underlying shares. The estimated value of the securities is determined using our own pricing and valuation models, market inputs and assumptions relating to the underlying shares, instruments based on the underlying shares, volatility and other factors including current and expected interest rates, as well as an interest rate related to our secondary market credit spread, which is the implied interest rate at which our conventional fixed rate debt trades in the secondary market.

What determines the economic terms of the securities?

In determining the economic terms of the securities, including the early redemption payment amount, the call threshold levels and the downside threshold levels, we use an internal funding rate, which is likely to be lower than our secondary market credit spreads and therefore advantageous to us. If the issuing, selling, structuring and hedging costs borne by you were lower or if the internal funding rate were higher, one or more of the economic terms of the securities would be more favorable to you.

What is the relationship between the estimated value on the pricing date and the secondary market price of the securities?

The price at which MS & Co. purchases the securities in the secondary market, absent changes in market conditions, including those related to the underlying shares, may vary from, and be lower than, the estimated value on the pricing date, because the secondary market price takes into account our secondary market credit spread as well as the bid-offer spread that MS & Co. would charge in a secondary market transaction of this type and other factors. However, because the costs associated with issuing, selling, structuring and hedging the securities are not fully deducted upon issuance, for a period of up to 6 months following the issue date, to the extent that MS & Co. may buy or sell the securities in the secondary market, absent changes in market conditions, including those related to the underlying shares, and to our secondary market credit spreads, it would do so based on values higher than the estimated value. We expect that those higher values will also be reflected in your brokerage account statements.

MS & Co. may, but is not obligated to, make a market in the securities, and, if it once chooses to make a market, may cease doing so at any time.

April 2024Page 4

Morgan Stanley Finance LLC

Jump Securities with Auto-Callable Feature due April 8, 2027

All Payments on the Securities Based on the Worst Performing of the iShares® Russell 2000 Value ETF and the iShares® S&P 500 Value ETF

Principal at Risk Securities

Key Investment Rationale

The securities do not provide for the regular payment of interest. Instead, the securities will be automatically redeemed if the closing price of each of the iShares® Russell 2000 Value ETF and the iShares® S&P 500 Value ETF on the first determination date is greater than or equal to its respective call threshold level.

The following scenarios are for illustrative purposes only to demonstrate how an automatic early redemption payment or the payment at maturity (if the securities have not previously been redeemed) are calculated, and do not attempt to demonstrate every situation that may occur. Accordingly, the securities may or may not be redeemed prior to maturity and the payment at maturity may be less than 80% of the stated principal amount of the securities and may be zero.

Scenario 1: The securities are redeemed prior to maturity	When each of the underlying shares closes at or above its respective call threshold level on the first determination date, the securities will be automatically redeemed for the early redemption payment on the early redemption date. Investors do not participate in any appreciation in the price of either of the underlying shares.
Scenario 2: The securities are not redeemed prior to maturity, and investors receive a positive return at maturity	This scenario assumes that at least one of the underlying shares closes below its respective call threshold level on the first determination date. Consequently, the securities are not redeemed prior to maturity. On the final determination date, each of the underlying shares closes above its respective initial share price. At maturity, investors will receive the stated principal amount of their investment plus a return reflecting 300% of the upside performance of the worst performing underlying shares.
Scenario 3: The securities are not redeemed prior to maturity, and investors receive the return of principal at maturity	This scenario assumes that at least one of the underlying shares closes below its respective call threshold level on the first determination date. Consequently, the securities are not redeemed prior to maturity. On the final determination date, at least one underlying share closes below its respective initial share price, but the final share price of each of the underlying shares is greater than or equal to its respective downside threshold level. At maturity, investors will receive a cash payment equal to $1,000 per $1,000 security.
Scenario 4: The securities are not redeemed prior to maturity, and investors suffer a substantial loss of principal at maturity	This scenario assumes that at least one of the underlying shares closes below its respective call threshold level on the first determination date. Consequently, the securities are not redeemed prior to maturity. On the final determination date, at least one of the underlying shares closes below its respective downside threshold level. At maturity, investors will receive an amount equal to the stated principal amount multiplied by the share performance factor of the worst performing underlying shares. Under these circumstances, the payment at maturity will be significantly less than the stated principal amount and could be zero.

April 2024Page 5

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All Payments on the Securities Based on the Worst Performing of the iShares® Russell 2000 Value ETF and the iShares® S&P 500 Value ETF

Principal at Risk Securities

Hypothetical Examples

The following hypothetical examples are for illustrative purposes only. Whether the securities are redeemed prior to maturity will be determined by reference to the closing price of each of the underlying shares on the first determination date, and the payment at maturity, if any, will be determined by reference to the closing price of each of the underlying shares on the final determination date. The actual early redemption payment, initial index values, call threshold levels and downside threshold levels will be determined on the pricing date. Some numbers appearing in the examples below have been rounded for ease of analysis. All payments on the securities are subject to our credit risk. The below examples are based on the following terms:

Hypothetical Early Redemption Payment:	The hypothetical early redemption payment will be an amount in cash per stated principal amount, as follows: ●1st determination date: $1,122.50 No further payments will be made on the securities once they have been redeemed.
Payment at Maturity:	If the securities have not previously been redeemed, you will receive at maturity a cash payment per security as follows: ●If the final share price of each of the underlying shares is greater than or equal to its initial share price: $1,000 + ($1,000 × share percent change of the worst performing underlying shares × 300%) ●If the final share price of either of the underlying shares is less than its respective initial share price but the final share price of each of the underlying shares is greater than or equal to its respective downside threshold level: $1,000 ●If the final share price of either of the underlying shares is less than its respective downside threshold level: $1,000 × share performance factor of the worst performing underlying shares. Under these circumstances, you will lose a significant portion or all of your investment.
Stated Principal Amount:	$1,000
Hypothetical Initial Share Price:	With respect to the IWN Shares: $140.00 With respect to the IVE Shares: $160.00
Hypothetical Downside Threshold Level:	With respect to the IWN Shares: $112.00, which is 80% of its hypothetical initial share price With respect to the IVE Shares: $128.00, which is 80% of its hypothetical initial share price
Hypothetical Call Threshold Level:	With respect to the IWN Shares: $140.00, which is 100% of its hypothetical initial share price With respect to the IVE Shares: $160.00, which is 100% of its hypothetical initial share price

April 2024Page 6

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All Payments on the Securities Based on the Worst Performing of the iShares® Russell 2000 Value ETF and the iShares® S&P 500 Value ETF

Principal at Risk Securities

Automatic Call:

Example 1 — The securities are redeemed following the first determination date.

	Determination Closing Price
Date	IWN Shares	IVE Shares	Payment (per Security)
1st Determination Date	$220.00 (at or above the call threshold level)	$175.00 (at or above the call threshold level)	$1,122.50

In this example, on the first determination date, the closing price of each of the underlying shares is at or above its respective call threshold level. Therefore, the securities are automatically redeemed on the early redemption date. Investors will receive a payment of $1,122.50 per security on the early redemption date. No further payments will be made on the securities once they have been redeemed, and investors do not participate in the appreciation in the price of either of the underlying shares.

How to calculate the payment at maturity:

In the following examples, one or both of the underlying shares close below the respective call threshold level(s) on the first determination date, and, consequently, the securities are not automatically redeemed prior to, and remain outstanding until, maturity.

	Final Share Price
	IWN Shares	IVE Shares	Payment at Maturity (per Security)
Example 1:	$154.00 (at or above itsinitial share price)	$224.00 (at or above itsinitial share price)	$1,000 + ($1,000 × 10% × 300%) = $1,300
Example 2:	$119.00 (below itsinitial share price but at or above itsdownside threshold level)	$192.00 (at or above itsinitial share price and downside threshold level)	$1,000
Example 3:	$168.00 (at or above itsinitial share price and downside threshold level)	$64.00 (below itsdownside threshold level)	$1,000 × ($64.00 / $160.00) = $400
Example 4:	$28.00 (below itsinitial share price and downside threshold level)	$144.00 (below itsinitial share price but at or above its downside threshold level)	$1,000 × ($28.00 / $140.00) = $200
Example 5:	$28.00 (below itsdownside threshold level)	$80.00 (below itsdownside threshold level)	$1,000 × ($28.00 / $140.00) = $200

In example 1, the final share price of each of the underlying shares is at or above its respective initial share price. The IWN Shares have appreciated by 10% while the IVE Shares have appreciated by 40%. Therefore, investors receive at maturity the stated principal amount plus a return reflecting 300% of the appreciation of the worst performing underlying shares, which are the IWN Shares in this example. Investors receive $1,300 per security at maturity.

In example 2, the final share price of one of the underlying shares is at or above its initial share price and downside threshold level, but the final share price of the other underlying share is below its initial share price and at or above its downside threshold level. The IWN Shares have declined 15% from its initial share price to its final share price and the IVE Shares have increased 20% from its initial share price to its final share price. Therefore, investors receive $1,000 per security at maturity. Investors do not participate in any appreciation in the price of either of the underlying shares.

In example 3, the final share price of one of the underlying shares is at or above its initial share price and downside threshold level, but the final share price of the other underlying share is below its respective downside threshold level. Therefore, investors are exposed to the downside performance of the worst performing underlying shares at maturity. The IWN Shares have increased 20% from its initial share price to its final share price and the IVE Shares have declined 60% from its initial share price to its final share price. Therefore, investors receive at maturity an amount equal to the stated principal amount multiplied by the share performance factor of the IVE Shares, which is the worst performing underlying shares in this example.

In example 4, the final share price of one of the underlying shares is below its initial share price but at or above its downside threshold level, while the final share price of the other underlying share is below its respective downside threshold level. Therefore, investors are exposed to the

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Principal at Risk Securities

downside performance of the worst performing underlying shares at maturity. The IWN Shares have declined 80% from its initial share price to its final share price and the IVE Shares have declined 10% from its initial share price to its final share price. Therefore, investors receive at maturity an amount equal to the stated principal amount multiplied by the share performance factor of the IWN Shares, which is the worst performing underlying shares in this example.

In example 5, the final share price of each of the underlying shares is below its respective downside threshold level, and investors receive at maturity an amount equal to the stated principal amount multiplied by the share performance factor of the worst performing underlying shares. The IWN Shares have declined 80% from its initial share price to its final share price and the IVE Shares have declined 50% from its initial share price to its final share price. Therefore, the payment at maturity equals the stated principal amount multiplied by the share performance factor of the IWN Shares, which is the worst performing underlying shares in this example.

If the final share price of either of the underlying shares is below its respective downside threshold level, you will be exposed to the downside performance of the worst performing underlying shares at maturity, and your payment at maturity will be less than 80% of the stated principal amount per security and could be zero.

April 2024Page 8

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All Payments on the Securities Based on the Worst Performing of the iShares® Russell 2000 Value ETF and the iShares® S&P 500 Value ETF

Principal at Risk Securities

Risk Factors

This section describes the material risks relating to the securities. For further discussion of these and other risks, you should read the section entitled “Risk Factors” in the accompanying product supplement, index supplement and prospectus. We also urge you to consult with your investment, legal, tax, accounting and other advisers in connection with your investment in the securities.

Risks Relating to an Investment in the Securities

￭The securities do not pay interest or guarantee the return of any principal. The terms of the securities differ from those of ordinary debt securities in that they do not pay interest or guarantee the return of any of the principal amount at maturity. If the securities have not been automatically redeemed prior to maturity and if the final share price of either of the underlying shares is less than its respective downside threshold level of 80% of its initial share price, you will be exposed to the decline in the price of the worst performing underlying shares, as compared to its initial share price, on a 1-to-1 basis, and you will receive for each security that you hold at maturity an amount equal to the stated principal amount multiplied by the share performance factor of the worst performing underlying shares. In this case, the payment at maturity will be less than 80% of the stated principal amount and could be zero.

￭If the securities are redeemed prior to maturity, the appreciation potential of the securities is limited by the fixed early redemption payment specified for the first determination date. If each of the underlying shares closes at or above its respective call threshold level on the first determination date, the securities will be automatically redeemed. In this scenario, the appreciation potential of the securities is limited to the fixed early redemption payment specified for the first determination date, and no further payments will be made on the securities once they have been redeemed. In addition, if the securities are redeemed prior to maturity, you will not participate in any appreciation in the price of either of the underlying shares, which could be significant. Moreover, the fixed early redemption paymentmay be less than the payment at maturity you would receive for the same level of appreciation of theworst performing underlying shares had the securities not been automatically redeemed and instead remained outstanding until maturity.

￭The market price will be influenced by many unpredictable factors. Several factors, many of which are beyond our control, will influence the value of the securities in the secondary market and the price at which MS & Co. may be willing to purchase or sell the securities in the secondary market. We expect that generally the level of interest rates available in the market and the prices of the underlying shares on any day, including in relation to its respective initial share price, call threshold level and downside threshold level, will affect the value of the securities more than any other factors. Other factors that may influence the value of the securities include:

othe trading price and volatility (frequency and magnitude of changes in value) of the underlying shares and the stocks constituting their respective share underlying indices,

ogeopolitical conditions and economic, financial, political, regulatory or judicial events that affect the underlying shares or equity markets generally and which may affect the prices of the underlying shares,

odividend rates on the stocks constituting the share underlying indices,

othe time remaining until the securities mature,

ointerest and yield rates in the market,

othe availability of comparable instruments,

othe composition of the underlyings and changes in the constituents of the underlying shares,

othe occurrence of certain events affecting the underlying shares that may or may not require an adjustment to the adjustment factors, and

oany actual or anticipated changes in our credit ratings or credit spreads.

Generally, the longer the time remaining to maturity, the more the market price of the securities will be affected by the other factors described above. Some or all of these factors will influence the price that you will receive if you sell your securities prior to maturity. For example, you may have to sell your securities at a substantial discount from the stated principal amount of $1,000 per security if the price of either of the underlying shares at the time of sale is near or below its downside threshold level or if market interest rates rise.

You cannot predict the future performance of either of the underlying shares based on its historical performance. The price(s) of one or both of the underlying shares may decrease so that you will receive no return on your investment and receive a payment at maturity that is less than 80% of the stated principal amount. See“iShares® Russell 2000 Value ETF Overview” and“iShares® S&P 500 Value ETF Overview” below.

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Principal at Risk Securities

￭The securities are subject to our credit risk, and any actual or anticipated changes to our credit ratings or credit spreads may adversely affect the market value of the securities. You are dependent on our ability to pay all amounts due on the securities upon an early redemption or at maturity and therefore you are subject to our credit risk. If we default on our obligations under the securities, your investment would be at risk and you could lose some or all of your investment. As a result, the market value of the securities prior to maturity will be affected by changes in the market’s view of our creditworthiness. Any actual or anticipated decline in our credit ratings or increase in the credit spreads charged by the market for taking our credit risk is likely to adversely affect the market value of the securities.

￭As a finance subsidiary, MSFL has no independent operations and will have no independent assets. As a finance subsidiary, MSFL has no independent operations beyond the issuance and administration of its securities and will have no independent assets available for distributions to holders of MSFL securities if they make claims in respect of such securities in a bankruptcy, resolution or similar proceeding. Accordingly, any recoveries by such holders will be limited to those available under the related guarantee by Morgan Stanley and that guarantee will rank pari passu with all other unsecured, unsubordinated obligations of Morgan Stanley. Holders will have recourse only to a single claim against Morgan Stanley and its assets under the guarantee. Holders of securities issued by MSFL should accordingly assume that in any such proceedings they would not have any priority over and should be treated pari passu with the claims of other unsecured, unsubordinated creditors of Morgan Stanley, including holders of Morgan Stanley-issued securities.

￭Not equivalent to investing in the underlying shares or the stocks composing the share underlying indices. Investing in the securities is not equivalent to investing in the underlying shares, the share underlying indices or the stocks that constitute the share underlying indices. Investors in the securities will not have voting rights or rights to receive dividends or other distributions or any other rights with respect to the underlying shares or the stocks that constitute the share underlying indices.

￭Reinvestment risk. The term of your investment in the securities may be shortened due to the automatic early redemption feature of the securities. If the securities are redeemed prior to maturity, you will receive no further payments on the securities and may be forced to invest in a lower interest rate environment and may not be able to reinvest at comparable terms or returns. However, under no circumstances will the securities be redeemed at any point other than the specified early redemption date.

￭The securities will not be listed on any securities exchange and secondary trading may be limited, and accordingly, you should be willing to hold your securities for the entire 3-year term of the securities. The securities will not be listed on any securities exchange. Therefore, there may be little or no secondary market for the securities. MS & Co. may, but is not obligated to, make a market in the securities and, if it once chooses to make a market, may cease doing so at any time. When it does make a market, it will generally do so for transactions of routine secondary market size at prices based on its estimate of the current value of the securities, taking into account its bid/offer spread, our credit spreads, market volatility, the notional size of the proposed sale, the cost of unwinding any related hedging positions, the time remaining to maturity and the likelihood that it will be able to resell the securities. Even if there is a secondary market, it may not provide enough liquidity to allow you to trade or sell the securities easily. Since other broker-dealers may not participate significantly in the secondary market for the securities, the price at which you may be able to trade your securities is likely to depend on the price, if any, at which MS & Co. is willing to transact. If, at any time, MS & Co. were to cease making a market in the securities, it is likely that there would be no secondary market for the securities. Accordingly, you should be willing to hold your securities to maturity.

￭The rate we are willing to pay for securities of this type, maturity and issuance size is likely to be lower than the rate implied by our secondary market credit spreads and advantageous to us. Both the lower rate and the inclusion of costs associated with issuing, selling, structuring and hedging the securities in the original issue price reduce the economic terms of the securities, cause the estimated value of the securities to be less than the original issue price and will adversely affect secondary market prices.Assuming no change in market conditions or any other relevant factors, the prices, if any, at which dealers, including MS & Co., may be willing to purchase the securities in secondary market transactions will likely be significantly lower than the original issue price, because secondary market prices will exclude the issuing, selling, structuring and hedging-related costs that are included in the original issue price and borne by you and because the secondary market prices will reflect our secondary market credit spreads and the bid-offer spread that any dealer would charge in a secondary market transaction of this type as well as other factors.

The inclusion of the costs of issuing, selling, structuring and hedging the securities in the original issue price and the lower rate we are willing to pay as issuer make the economic terms of the securities less favorable to you than they otherwise would be.

However, because the costs associated with issuing, selling, structuring and hedging the securities are not fully deducted upon issuance, for a period of up to 6 months following the issue date, to the extent that MS & Co. may buy or sell the securities in the secondary market, absent changes in market conditions, including those related to the underlying shares, and to our secondary market credit spreads, it would do so based on values higher than the estimated value, and we expect that those higher values will also be reflected in your brokerage account statements.

￭The estimated value of the securities is determined by reference to our pricing and valuation models, which may differ from those of other dealers, and is not a maximum or minimum secondary market price. These pricing and valuation models are proprietary and

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rely in part on subjective views of certain market inputs and certain assumptions about future events, which may prove to be incorrect. As a result, because there is no market-standard way to value these types of securities, our models may yield a higher estimated value of the securities than those generated by others, including other dealers in the market, if they attempted to value the securities. In addition, the estimated value on the pricing date does not represent a minimum or maximum price at which dealers, including MS & Co., would be willing to purchase your securities in the secondary market (if any exists) at any time. The value of your securities at any time after the date of this document will vary based on many factors that cannot be predicted with accuracy, including our creditworthiness and changes in market conditions. See also “The market price will be influenced by many unpredictable factors” above.

￭Hedging and trading activity by our affiliates could potentially affect the value of the securities. One or more of our affiliates and/or third-party dealers expect to carry out hedging activities related to the securities (and to other instruments linked to the underlying shares and the share underlying indices), including trading in the underlying shares or the component stocks of the share underlying indices listed on major securities markets. As a result, these entities may be unwinding or adjusting hedge positions during the term of the securities, and the hedging strategy may involve greater and more frequent dynamic adjustments to the hedge as the final determination date approaches. Some of our affiliates also trade the underlying shares and other financial instruments related to the underlying shares and the share underlying indices on a regular basis as part of their general broker-dealer and other businesses. Any of these hedging or trading activities on or prior to the pricing date could potentially increase the initial share price of an underlying share, and, therefore, could increase (i) the price at or above which such underlying share must close on the first determination date so that the securities are redeemed prior to maturity for the early redemption payment (depending also on the performance of the other underlying shares) and (ii) the downside threshold level for such underlying share, which is the price at or above which such underlying share must close on the final determination date so that you are not exposed to the negative performance of the worst performing underlying shares at maturity (depending also on the performance of the other underlying shares). Additionally, such hedging or trading activities during the term of the securities could potentially affect the price of either of the underlying shares on the determination dates, and, accordingly, whether we redeem the securities prior to maturity and the amount of cash you will receive at maturity, if any.

￭The calculation agent, which is a subsidiary of Morgan Stanley and an affiliate of MSFL, will make determinations with respect to the securities. As calculation agent, MS & Co. will determine the initial share prices, the call threshold levels, the downside threshold levels, the final share prices, whether the securities will be redeemed on the early redemption date, whether a market disruption event has occurred, whether to make any adjustments to the adjustment factors and the payment at maturity, if any. Moreover, certain determinations made by MS & Co., in its capacity as calculation agent, may require it to exercise discretion and make subjective judgments, such as with respect to the occurrence or non-occurrence of market disruption events or calculation of a closing price in the event of a market disruption event or discontinuance of an underlying share. These potentially subjective determinations may affect the payout to you upon an early redemption or at maturity, if any. For further information regarding these types of determinations, see “Description of Auto-Callable Securities—Postponement of Determination Dates,” “—Alternate Exchange Calculation in Case of an Event of Default,” “—Discontinuance of Any Underlying Index; Alteration of Method of Calculation,” “—Calculation Agent and Calculations” and” “Description of Auto-Callable Securities—Auto-Callable Securities Linked to Underlying Shares” in the accompanying product supplement. In addition, MS & Co. has determined the estimated value of the securities on the pricing date.

￭The U.S. federal income tax consequences of an investment in the securities are uncertain. Please read the discussion under “Additional Information—Tax considerations” in this document and the discussion under “United States Federal Taxation” in the accompanying product supplement for auto-callable securities(together, the “Tax Disclosure Sections”) concerning the U.S. federal income tax consequences of an investment in the securities. As discussed in the Tax Disclosure Sections, there is a substantial risk that the “constructive ownership” rule could apply, in which case all or a portion of any long-term capital gain recognized by a U.S. Holder could be recharacterized as ordinary income and an interest charge could be imposed. If the Internal Revenue Service (the “IRS”) were successful in asserting an alternative treatment for the securities, the timing and character of income on the securities might differ significantly from the tax treatment described in the Tax Disclosure Sections. For example, under one possible treatment, the IRS could seek to recharacterize the securities as debt instruments. In that event, U.S. Holders would be required to accrue into income original issue discount on the securities every year at a “comparable yield” determined at the time of issuance and recognize all income and gain in respect of the securities as ordinary income. The risk that financial instruments providing for buffers, triggers or similar downside protection features, such as the securities, would be recharacterized as debt is greater than the risk of recharacterization for comparable financial instruments that do not have such features. We do not plan to request a ruling from the IRS regarding the tax treatment of the securities, and the IRS or a court may not agree with the tax treatment described in the Tax Disclosure Sections.

In 2007, the U.S. Treasury Department 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 holders of 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; whether short-term instruments should be subject to any such accrual regime; the relevance of factors such as the exchange-traded status of the instruments and the nature of the underlying property to which the instruments are linked; the degree, if any, to which income (including any mandated accruals) realized by non-U.S. investors should be subject to withholding tax;

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and whether these instruments are or should be subject to the “constructive ownership” rule, as discussed in this document. 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 and adversely affect the tax consequences of an investment in the securities, possibly with retroactive effect. Both U.S. and Non-U.S. Holders should consult their tax advisers regarding the U.S. federal income tax consequences of an investment in the securities, including possible alternative treatments, the potential application of the constructive ownership rule, the issues presented by this notice and any tax consequences arising under the laws of any state, local or non-U.S. taxing jurisdiction.

Risks Relating to the Underlying Shares

￭You are exposed to the price risk of each of the underlying shares. Your return on the securities is not linked to a basket consisting of the underlying shares. Rather, it will be contingent upon the independent performance of each of the underlying shares. Unlike an instrument with a return linked to a basket of underlying assets, in which risk is mitigated and diversified among all the components of the basket, you will be exposed to the risks related to each of the underlying shares. Poor performance by either of the underlying shares over the term of the securities may negatively affect your return and will not be offset or mitigated by any positive performance by the other underlying shares. To receive the early redemption payment, each of the underlying shares must close at or above its respective call threshold level on the first determination date. In addition, if the securities have not been automatically redeemed early and at least one of the underlying shares has declined to below its respective downside threshold level as of the final determination date, you will be fully exposed to the decline in the worst performing underlying shares over the term of the securities on a 1-to-1 basis, even if the other underlying shares has appreciated or has not declined as much. Under this scenario, the value of any such payment will be less than 80% of the stated principal amount and could be zero. Accordingly, your investment is subject to the price risk of each of the underlying shares.

￭Because the securities are linked to the performance of the worst performing underlying shares, you are exposed to a greater risk of sustaining a significant loss on your investment than if the securities were linked to just one of the underlying shares. The risk that you will suffer a significant loss on your investment is greater if you invest in the securities as opposed to substantially similar securities that are linked to the performance of just one of the underlying shares. With two underlying shares, it is more likely that either of the underlying shares will close below the respective downside threshold level on the final determination date than if the securities were linked to only one of the underlying shares. Therefore, it is more likely that you will suffer a significant loss on your investment.

￭The securities are linked to the iShares® Russell 2000 Value ETF and are subject to risks associated with small-capitalization companies. As the iShares® Russell 2000 Value ETF is one of the underlying shares, and the iShares® Russell 2000 Value ETF tracks the performance of stocks issued by companies with relatively small market capitalization, the securities are linked to the value of small-capitalization companies. These companies often have greater stock price volatility, lower trading volume and less liquidity than large-capitalization companies and therefore the iShares® Russell 2000 Value ETF may be more volatile than indices that consist of stocks issued by large-capitalization companies. Stock prices of small-capitalization companies are also 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. In addition, small capitalization companies are typically less well-established 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 personnel. Such companies tend to have smaller revenues, less diverse product lines, smaller shares of their product or service markets, fewer financial resources and less competitive strengths than large-capitalization companies and are more susceptible to adverse developments related to their products.

￭The investment strategy represented by the IWN Shares may not be successful. The iShares® Russell 2000 Value ETF seeks to track the investment results of the Russell 2000® Value Index. The Russell 2000® Value Index measures the capitalization-weighted price performance of the stocks included in the Russell 2000® Index that are determined by FTSE Russell to be value-oriented, with lower price-to-book ratios and lower forecasted growth values. However, there can be no assurance that the Russell 2000® Value Index will outperform any other index or strategy that tracks stocks selected using other criteria. A “value” investment strategy is premised on the goal of investing in stocks that are deemed to be relatively cheap or “undervalued,” based on the assumption that the values of those stocks will increase over time. However, the value characteristics referenced by the Russell 2000® Value Index may not be accurate predictors of undervalued stocks, and there is in any event no guarantee that undervalued stocks will appreciate or will not depreciate. In addition, the selection methodology of the Russell 2000® Value Index includes an inherent bias against stocks with strong growth characteristics, and stocks with strong growth characteristics may outperform stocks with weak growth characteristics. It is possible that the investment strategy and stock selection methodology of the Russell 2000® Value Index will adversely affect its return and, therefore, the value of the securities.

￭The securities are linked to the iShares® S&P 500 Value ETF and are subject to risks associated with value securities. The underlying shares track the performance of the S&P 500® Value Index. Each of the equity securities included in the S&P 500® Value Index has been issued by large-capitalization companies with relatively lower price-to-book ratios. These securities, perceived as undervalued, may fail to appreciate for longer periods of time and may never realize their full potential. These securities may have a higher level of volatility than other investments with different investment parameters. Any of these risks could adversely impact the price of the underlying shares and the value of the securities.

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￭Adjustments to the underlying shares or the indices tracked by the underlying shares could adversely affect the value of the securities. The investment advisor to each of the underlying shares (BlackRock Fund Advisors) seeks investment results that correspond generally to the price and yield performance, before fees and expenses, of the relevant share underlying indices. Pursuant to its investment strategy or otherwise, the investment advisor may add, delete or substitute the stocks composing the respective underlying shares. Any of these actions could adversely affect the price of the respective underlying shares and, consequently, the value of the securities. The publisher of each of the share underlying indices is responsible for calculating and maintaining the respective share underlying index. The publisher may add, delete or substitute the securities constituting the respective share underlying index or make other methodological changes that could change the value of the respective share underlying index, and, consequently, the price of the underlying shares and the value of the securities. The publisher of each of the share underlying indices may discontinue or suspend calculation or publication of a share underlying index at any time. In these circumstances, the calculation agent will have the sole discretion to substitute a successor index that is comparable to the discontinued share underlying index and will be permitted to consider indices that are calculated and published by the calculation agent or any of its affiliates.

￭The performance and market price of either of the underlying shares, particularly during periods of market volatility, may not correlate with the performance of its respective share underlying index, the performance of the component securities of such share underlying index or the net asset value per share of such underlying shares. The underlying shares do not fully replicate their respective share underlying indices, and each may hold securities that are different than those included in its respective share underlying index.  In addition, the performance of each of the underlying shares will reflect additional transaction costs and fees that are not included in the calculation of the share underlying indices.  All of these factors may lead to a lack of correlation between the performance of each of the underlying shares and its respective share underlying index.  In addition, corporate actions (such as mergers and spin-offs) with respect to the equity securities underlying each of the underlying shares may impact the variance between the performance of each of the underlying shares and its respective share underlying index.  Finally, because the shares of each of the underlying shares are traded on  an exchange and are subject to market supply and investor demand, the market price of one share of each of the underlying shares may differ from the net asset value per share of such underlying shares.

In particular, during periods of market volatility, or unusual trading activity, trading in the securities underlying each of the underlying shares may be disrupted or limited, or such securities may be unavailable in the secondary market.  Under these circumstances, the liquidity of each underlying shares may be adversely affected, market participants may be unable to calculate accurately the net asset value per share of each of the underlying shares, and their ability to create and redeem shares of each of the underlying shares may be disrupted. Under these circumstances, the market price of shares of each of the underlying shares may vary substantially from the net asset value per share of each underlying share or the level of its respective share underlying index.

For all of the foregoing reasons, the performance of each of the underlying shares may not correlate with the performance of its respective share underlying index, the performance of the component securities of such share underlying index or the net asset value per share of such underlying shares.  Any of these events could materially and adversely affect the prices of each of the underlying shares and, therefore, the value of the securities. Additionally, if market volatility or these events were to occur on the final determination date, the calculation agent would maintain discretion to determine whether such market volatility or events have caused a market disruption event to occur, and such determination would affect the payment at maturity of the securities.  If the calculation agent determines that no market disruption event has taken place, the payment at maturity would be based solely on the published closing price per share of each of the underlying shares on the final determination date, even if either of the underlying shares is underperforming its respective share underlying index or the component securities of such share underlying index and/or trading below the net asset value per share of such underlying shares.

￭The antidilution adjustments the calculation agent is required to make do not cover every event that could affect the underlying shares. MS & Co., as calculation agent, will adjust the adjustment factors for certain events affecting the underlying shares. However, the calculation agent will not make an adjustment for every event that can affect the underlying shares. If an event occurs that does not require the calculation agent to adjust an adjustment factor, the market price of the securities may be materially and adversely affected.

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iShares® Russell 2000 Value ETF Overview

The iShares® Russell 2000 Value ETF is an exchange-traded fund that seeks investment results that correspond generally to the price and yield performance, before fees and expenses, of the Russell 2000® Value Index. The iShares® Russell 2000 Value ETF is managed by iShares® Trust (“iShares”), a registered investment company that consists of numerous separate investment portfolios, including the iShares® Russell 2000 Value ETF. Information provided to or filed with the Securities and Exchange Commission (the “Commission”) by iShares pursuant to the Securities Act of 1933 and the Investment Company Act of 1940 can be located by reference to Commission file numbers 333-92935 and 811-09729, respectively, through the Commission’s website at www.sec.gov. In addition, information may be obtained from other publicly available sources. Neither the issuer nor the agent makes any representation that any such publicly available information regarding the iShares® Russell 2000 Value ETF is accurate or complete.

Information as of market close on March 28, 2024:

Bloomberg Ticker Symbol:	IWN UP	52 Week High (on 3/28/2024):	$158.81
Current Share Price:	$158.81	52 Week Low (on 10/27/2023):	$125.51
52 Weeks Ago:	$133.69

The following graph sets forth the daily closing prices of the IWN Shares for the period from January 1, 2019 through March 28, 2024. The related table sets forth the published high and low closing prices, as well as the end-of-quarter closing prices, of the IWN Shares for each quarter in the same period. The closing price of the IWN Shares on March 28, 2024 was $158.81. We obtained the information in the graph and table below from Bloomberg Financial Markets, without independent verification. The historical performance of the IWN Shares should not be taken as an indication of future performance, and no assurance can be given as to the value of the IWN Shares at any time, including on the determination dates.

Shares of the iShares® Russell 2000 Value ETF — Daily Closing Prices

January 1, 2019 to March 28, 2024

 

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iShares® Russell 2000 Value ETF (CUSIP 464287630)	High ($)	Low ($)	Period End ($)
2019
First Quarter	125.80	107.18	119.90
Second Quarter	126.06	114.14	120.50
Third Quarter	123.96	110.84	119.41
Fourth Quarter	129.00	115.48	128.58
2020
First Quarter	129.50	71.79	82.03
Second Quarter	109.12	74.44	97.46
Third Quarter	108.28	91.58	99.33
Fourth Quarter	132.30	100.90	131.75
2021
First Quarter	169.53	130.00	159.47
Second Quarter	173.97	156.91	165.77
Third Quarter	167.43	152.99	160.23
Fourth Quarter	176.88	157.31	166.05
2022
First Quarter	169.21	151.25	161.40
Second Quarter	162.71	134.47	136.15
Third Quarter	159.38	128.93	128.93
Fourth Quarter	149.64	131.32	138.67
2023
First Quarter	156.96	130.78	137.02
Second Quarter	142.33	128.93	140.80
Third Quarter	151.24	133.80	135.55
Fourth Quarter	158.20	125.51	155.33
2024
First Quarter	158.81	145.61	158.81

This document relates only to the securities offered hereby and does not relate to the IWN Shares. We have derived all disclosures contained in this document regarding iShares from the publicly available documents described above. In connection with the offering of the securities, neither we nor the agent has participated in the preparation of such documents or made any due diligence inquiry with respect to iShares. Neither we nor the agent makes any representation that such publicly available documents or any other publicly available information regarding iShares is accurate or complete. Furthermore, we cannot give any assurance that all events occurring prior to the date hereof (including events that would affect the accuracy or completeness of the publicly available documents described above) that would affect the trading price of the IWN Shares (and therefore the price of the IWN Shares at the time we price the securities) have been publicly disclosed. Subsequent disclosure of any such events or the disclosure of or failure to disclose material future events concerning iShares could affect the value received with respect to the securities and therefore the value of the securities.

Neither we nor any of our affiliates makes any representation to you as to the performance of the IWN Shares.

We and/or our affiliates may presently or from time to time engage in business with iShares. In the course of such business, we and/or our affiliates may acquire non-public information with respect to iShares, and neither we nor any of our affiliates undertakes to disclose any such information to you. In addition, one or more of our affiliates may publish research reports with respect to the IWN Shares. The statements in the preceding two sentences are not intended to affect the rights of investors in the securities under the securities laws. As a prospective purchaser of the securities, you should undertake an independent investigation of iShares as in your judgment is appropriate to make an informed decision with respect to an investment linked to the IWN Shares.

“iShares®” is a registered mark of BlackRock Fund Advisors or its affiliates (“BFA”). The securities are not sponsored, endorsed, sold, or promoted by BFA. BFA makes no representations or warranties to the owners of the securities or any member of the public regarding the advisability of investing in the securities. BFA has no obligation or liability in connection with the operation, marketing, trading or sale of the securities.

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Russell 2000® Value Index.The Russell 2000® Value Index is a sub-group of the Russell 2000® Index, which is an index calculated, published and disseminated by FTSE International Limited (“FTSE Russell”), and measures the capitalization-weighted price performance of 2,000 U.S. small-capitalization stocks listed on eligible U.S. exchanges. The Russell 2000® Value Index measures the capitalization-weighted price performance of the stocks included in the Russell 2000® Index that are determined by FTSE Russell to be value oriented, as indicated by lower price-to-book ratios and lower forecasted and historical growth. The Russell 2000® Index is designed to track the performance of the small-capitalization segment of the U.S. equity market. The companies included in the Russell 2000® Index are the middle 2,000 (i.e., those ranked 1,001 through 3,000) of the companies that form the Russell 3000E™ Index. The Russell 2000® Index represents approximately 7% of the U.S. equity market. For additional information about the Russell 2000® Value Index, see the information set forth under “Russell Style Indices—Russell 2000® Value Index” in the accompanying index supplement.

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iShares® S&P 500 Value ETF Overview

The iShares® S&P 500 Value ETF is an exchange-traded fund that seeks investment results that correspond generally to the price and yield performance, before fees and expenses, of the S&P 500® Value Index. The iShares® S&P 500 Value ETF is managed by iShares Trust (“iShares”), a registered investment company that consists of numerous separate investment portfolios, including the iShares® S&P 500 Value ETF. Information provided to or filed with the Securities and Exchange Commission (the “Commission”) by iShares pursuant to the Securities Act of 1933 and the Investment Company Act of 1940 can be located by reference to Commission file numbers 333-92935 and 811-09729, respectively, through the Commission’s website at www.sec.gov. In addition, information may be obtained from other publicly available sources. Neither the issuer nor the agent makes any representation that any such publicly available information regarding the iShares® S&P 500 Value ETF is accurate or complete.

Information as of market close on March 28, 2024:

Bloomberg Ticker Symbol:	IVE UP	52 Week High (on 3/28/2024):	$186.81
Current Share Price:	$186.81	52 Week Low (on 3/28/2023):	$146.63
52 Weeks Ago:	$146.63

The following graph sets forth the daily closing prices of the IVE Shares for the period from January 1, 2019 through March 28, 2024. The related table sets forth the published high and low closing prices, as well as the end-of-quarter closing prices, of the IVE Shares for each quarter in the same period. The closing price of the IVE Shares on March 28, 2024 was $186.81. We obtained the information in the graph and table below from Bloomberg Financial Markets, without independent verification. The historical performance of the IVE Shares should not be taken as an indication of future performance, and no assurance can be given as to the value of the IVE Shares at any time, including on the determination dates.

Shares of the iShares® S&P 500 Value ETF – Daily Closing Prices

January 1, 2019 to March 28, 2024

 

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iShares® S&P 500 Value ETF (CUSIP 464287408)	High ($)	Low ($)	Period End ($)
2019
First Quarter	114.40	99.16	112.74
Second Quarter	117.48	108.50	116.57
Third Quarter	120.88	112.00	119.14
Fourth Quarter	130.26	115.41	130.09
2020
First Quarter	131.79	82.97	96.25
Second Quarter	119.67	91.94	108.21
Third Quarter	118.22	106.77	112.45
Fourth Quarter	128.18	109.93	128.02
2021
First Quarter	142.40	125.98	141.24
Second Quarter	151.25	142.18	147.64
Third Quarter	152.00	143.75	145.42
Fourth Quarter	156.80	145.80	156.63
2022
First Quarter	159.06	147.46	155.72
Second Quarter	158.52	133.27	137.46
Third Quarter	150.96	128.52	128.52
Fourth Quarter	151.79	129.68	145.07
2023
First Quarter	159.47	144.21	151.76
Second Quarter	161.19	149.72	161.19
Third Quarter	166.75	153.33	153.84
Fourth Quarter	174.21	147.64	173.89
2024
First Quarter	186.81	171.09	186.81

This document relates only to the securities offered hereby and does not relate to the IVE Shares. We have derived all disclosures contained in this document regarding iShares from the publicly available documents described above. In connection with the offering of the securities, neither we nor the agent has participated in the preparation of such documents or made any due diligence inquiry with respect to iShares. Neither we nor the agent makes any representation that such publicly available documents or any other publicly available information regarding iShares is accurate or complete. Furthermore, we cannot give any assurance that all events occurring prior to the date hereof (including events that would affect the accuracy or completeness of the publicly available documents described above) that would affect the trading price of the IVE Shares (and therefore the price of the IVE Shares at the time we price the securities) have been publicly disclosed. Subsequent disclosure of any such events or the disclosure of or failure to disclose material future events concerning iShares could affect the value received with respect to the securities and therefore the value of the securities.

Neither we nor any of our affiliates makes any representation to you as to the performance of the IVE Shares.

We and/or our affiliates may presently or from time to time engage in business with iShares. In the course of such business, we and/or our affiliates may acquire non-public information with respect to iShares, and neither we nor any of our affiliates undertakes to disclose any such information to you. In addition, one or more of our affiliates may publish research reports with respect to the IVE Shares. The statements in the preceding two sentences are not intended to affect the rights of investors in the securities under the securities laws. As a prospective purchaser of the securities, you should undertake an independent investigation of iShares as in your judgment is appropriate to make an informed decision with respect to an investment linked to the IVE Shares.

“iShares®” is a registered mark of BlackRock Fund Advisors or its affiliates (“BFA”). The securities are not sponsored, endorsed, sold, or promoted by BFA. BFA makes no representations or warranties to the owners of the securities or any member of the public regarding the advisability of investing in the securities. BFA has no obligation or liability in connection with the operation, marketing, trading or sale of the securities.

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Morgan Stanley Finance LLC

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All Payments on the Securities Based on the Worst Performing of the iShares® Russell 2000 Value ETF and the iShares® S&P 500 Value ETF

Principal at Risk Securities

S&P 500® Value Index.The S&P 500® Value Index is published by S&P® Dow Jones Indices LLC and is a float adjusted market capitalization weighted index comprised of stocks representing approximately half the market capitalization of the S&P 500® Index that have been identified as being on the “value” end of the growth-value spectrum. The S&P 500® Value Index is described in “S&P 500® Value Index” in the accompanying index supplement.

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Morgan Stanley Finance LLC

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All Payments on the Securities Based on the Worst Performing of the iShares® Russell 2000 Value ETF and the iShares® S&P 500 Value ETF

Principal at Risk Securities

Additional Terms of the Securities

Please read this information in conjunction with the terms on the front cover of this document.

Additional Terms:
If the terms described herein are inconsistent with those described in the accompanying product supplement, index supplement or prospectus, the terms described herein shall control.
Share underlying indices:	With respect to the IWN Shares, the Russell 2000® Value Index With respect to the IVE Shares, the S&P 500® Value Index
Share underlying index publishers:	With respect to the IWN Shares, FTSE Russell, or any successor thereof. With respect to the IVE Shares, S&P® Dow Jones Indices LLC, or any successor thereof.
Downside threshold level:	The accompanying product supplement refers to the downside threshold level as the “trigger level.”
Jump securities with auto-callable feature:	The accompanying product supplement refers to these jump securities with auto-callable feature as the “auto-callable securities.”
Trustee:	The Bank of New York Mellon
Calculation agent:	MS & Co.
Issuer notices to registered security holders, the trustee and the depositary:	In the event that the early redemption date or the maturity date is postponed due to postponement of the relevant determination date, the issuer shall give notice of such postponement and, once it has been determined, of the date to which the early redemption date or the maturity date, as applicable, has been rescheduled (i) to the holder of the securities by mailing notice of such postponement by first class mail, postage prepaid, to the holder’s last address as it shall appear upon the registry books, (ii) to the trustee by facsimile confirmed by mailing such notice to the trustee by first class mail, postage prepaid, at its New York office and (iii) to The Depository Trust Company (the “depositary”) by telephone or facsimile confirmed by mailing such notice to the depositary by first class mail, postage prepaid. Any notice that is mailed to the holder of the securities in the manner herein provided shall be conclusively presumed to have been duly given to such holder, whether or not such holder receives the notice. The issuer shall give such notice as promptly as possible, and in no case later than (i) with respect to notice of postponement of the early redemption date or the maturity date, as applicable, the business day immediately preceding the scheduled early redemption date or maturity date, as applicable, and (ii) with respect to notice of the date to which the early redemption date or the maturity date, as applicable, has been rescheduled, the business day immediately following the relevant determination date as postponed. In the event that the securities are subject to early redemption, the issuer shall, (i) on the business day following the first determination date, give notice of the early redemption of the securities and the early redemption payment, including specifying the payment date of the amount due upon the early redemption, (x) to each registered holder of the securities by mailing notice of such early redemption by first class mail, postage prepaid, to such registered holder’s last address as it shall appear upon the registry books, (y) to the trustee by facsimile confirmed by mailing such notice to the trustee by first class mail, postage prepaid, at its New York office and (z) to the depositary by telephone or facsimile confirmed by mailing such notice to the depositary by first class mail, postage prepaid and (ii) on or prior to the early redemption date, deliver the aggregate cash amount due with respect to the securities to the trustee for delivery to the depositary, as holder of the securities. Any notice that is mailed to a registered holder of the securities in the manner herein provided shall be conclusively presumed to have been duly given to such holder, whether or not such registered holder receives the notice. This notice shall be given by the issuer or, at the issuer’s request, by the trustee in the name and at the expense of the issuer, with any such request to be accompanied by a copy of the notice to be given. The issuer shall, or shall cause the calculation agent to, (i) provide written notice to the trustee, on which notice the trustee may conclusively rely, and to the depositary of the amount of cash, if any, to be delivered with respect to each stated principal amount of the securities, on or prior to 10:30 a.m. (New York City time) on the business day preceding the maturity date, and (ii) deliver the aggregate cash amount due with respect to the securities, if any, to the trustee for delivery to the depositary, as holder of the securities, on the maturity date.

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All Payments on the Securities Based on the Worst Performing of the iShares® Russell 2000 Value ETF and the iShares® S&P 500 Value ETF

Principal at Risk Securities

Additional Information About the Securities
Additional Information:
Minimum ticketing size:	$1,000 / 1 security
Tax considerations:	Although there is uncertainty regarding the U.S. federal income tax consequences of an investment in the securities due to the lack of governing authority, in the opinion of our counsel, Davis Polk & Wardwell LLP, under current law, and based on current market conditions, a security should be treated as a single financial contract that is an “open transaction” for U.S. federal income tax purposes. However, because our counsel’s opinion is based in part on market conditions as of the date of this document, it is subject to confirmation on the pricing date. Assuming this treatment of the securities is respected and subject to the discussion in “United States Federal Taxation” in the accompanying product supplement for auto-callable securities, the following U.S. federal income tax consequences should result based on current law: ￭A U.S. Holder should not be required to recognize taxable income over the term of the securities prior to settlement, other than pursuant to a sale or exchange. ￭Upon sale, exchange or settlement of the securities, a U.S. Holder should recognize gain or loss equal to the difference between the amount realized and the U.S. Holder’s tax basis in the securities. Subject to the discussion below concerning the potential application of the “constructive ownership” rule, such gain or loss should be long-term capital gain or loss if the investor has held the securities for more than one year, and short-term capital gain or loss otherwise. Because the securities are linked to shares of exchange-traded funds, although the matter is not clear, there is a substantial risk that an investment in the securities will be treated as a “constructive ownership transaction” under Section 1260 of the Internal Revenue Code of 1986, as amended (the “Code”). If this treatment applies, all or a portion of any long-term capital gain of the U.S. Holder in respect of the securities could be recharacterized as ordinary income (in which case an interest charge will be imposed). As a result of certain features of the securities, including the leveraged upside payment and the fact that the securities are linked to more than one exchange traded fund, it is unclear how to calculate the amount of gain that would be recharacterized if an investment in the securities were treated as a constructive ownership transaction. Due to the lack of governing authority, our counsel is unable to opine as to whether or how Section 1260 of the Code applies to the securities. U.S. investors should read the section entitled “United States Federal Taxation—Tax Consequences to U.S. Holders—Possible Application of Section 1260 of the Code” in the accompanying product supplement for auto-callable securities for additional information and consult their tax advisers regarding the potential application of the “constructive ownership” rule. In2007, the U.S. Treasury Department and the Internal Revenue Service (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 holders of 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; whether short-term instruments should be subject to any such accrual regime; the relevance of factors such as the exchange-traded status of the instruments and the nature of the underlying property to which the instruments are linked; the degree, if any, to which income (including any mandated accruals) realized by non-U.S. investors should be subject to withholding tax; and whether these instruments are or should be subject to the “constructive ownership” rule, as discussed above. 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 and adversely affect the tax consequences of an investment in the securities, possibly with retroactive effect. As discussed in the accompanying product supplement for auto-callable securities, Section 871(m) of the Code and Treasury regulations promulgated thereunder (“Section 871(m)”) generally impose a 30% (or a lower applicable treaty rate) withholding tax 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 (each, an “Underlying Security”). Subject to certain exceptions, Section 871(m) generally applies to securities that substantially replicate the economic performance of one or more Underlying Securities, as determined based on tests set forth in the applicable Treasury regulations (a “Specified Security”). However, pursuant to an IRS notice, Section 871(m) will not apply to securities issued before January 1, 2025 that do not have a delta of one with respect to any Underlying Security. Based on the terms of the securities and current market conditions, we expect that the securities will not have a delta of one with respect to any Underlying Security on the pricing date. However, we will provide an

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All Payments on the Securities Based on the Worst Performing of the iShares® Russell 2000 Value ETF and the iShares® S&P 500 Value ETF

Principal at Risk Securities

	updated determination in the pricing supplement. Assuming that the securities do not have a delta of one with respect to any Underlying Security, our counsel is of the opinion that the securities should not be Specified Securities and, therefore, should not be subject to Section 871(m). 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 withholding is required, we will not be required to pay any additional amounts with respect to the amounts so withheld. You should consult your tax adviser regarding the potential application of Section 871(m) to the securities. Both U.S. and non-U.S. investors considering an investment in the securities should read the discussion under “Risk Factors” in this document and the discussion under “United States Federal Taxation” in the accompanying product supplement for auto-callable securities and consult their tax advisers regarding all aspects of the U.S. federal income tax consequences of an investment in the securities, including possible alternative treatments, the potential application of the constructive ownership rule, the issues presented by the aforementioned notice and any tax consequences arising under the laws of any state, local or non-U.S. taxing jurisdiction. The discussion in the preceding paragraphs under “Tax considerations” and the discussion contained in the section entitled “United States Federal Taxation” in the accompanying product supplement for auto-callable securities, insofar as they purport to describe provisions of U.S. federal income tax laws or legal conclusions with respect thereto, constitute the full opinion of Davis Polk & Wardwell LLP regarding the material U.S. federal tax consequences of an investment in the securities.
Use of proceeds and hedging:	The proceeds from the sale of the securities will be used by us for general corporate purposes. We will receive, in aggregate, $1,000 per security issued, because, when we enter into hedging transactions in order to meet our obligations under the securities, our hedging counterparty will reimburse the cost of the agent’s commissions. The costs of the securities borne by you and described beginning on page 4 above comprise the agent’s commissions and the cost of issuing, structuring and hedging the securities. On or prior to the pricing date, we will hedge our anticipated exposure in connection with the securities by entering into hedging transactions with our affiliates and/or third-party dealers. We expect our hedging counterparties to take positions in the underlying shares, in futures and/or options contracts on the underlying shares or any component stocks of the share underlying indices, or positions in any other available securities or instruments that they may wish to use in connection with such hedging. Such purchase activity could potentially increase the initial share price of either of the underlying shares and, therefore, could increase (i) the price at or above which such underlying shares must close on the first determination date so that the securities are redeemed prior to maturity for the early redemption payment (depending also on the performance of the other underlying shares) and (ii) the downside threshold level for such underlying shares, which is the price at or above which such underlying shares must close on the final determination date so that you are not exposed to the negative performance of the worst performing underlying shares at maturity (depending also on the performance of the other underlying shares). In addition, through our affiliates, we are likely to modify our hedge position throughout the term of the securities, including on the final determination date, by purchasing and selling the underlying shares, futures or options contracts on the underlying shares or any other available securities or instruments that we may wish to use in connection with such hedging activities. As a result, these entities may be unwinding or adjusting hedge positions during the term of the securities, and the hedging strategy may involve greater and more frequent dynamic adjustments to the hedge as the final determination date approaches. Additionally, our hedging activities, as well as our other trading activities, during the term of the securities could potentially affect the price of either of the underlying shares on the determination dates, and, accordingly, whether we redeem the securities prior to maturity and the amount of cash you will receive at maturity, if any. For further information on our use of proceeds and hedging, see “Use of Proceeds and Hedging” in the accompanying product supplement.
Additional considerations:	Client accounts over which Morgan Stanley, Morgan Stanley Wealth Management or any of their respective subsidiaries have investment discretion are not permitted to purchase the securities, either directly or indirectly.

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Principal at Risk Securities

Supplemental information regarding plan of distribution; conflicts of interest:

MS & Co. expects to sell all of the securities that it purchases from us to an unaffiliated dealer at a price of $ per security, for further sale to certain fee-based advisory accounts at the price to public of $1,000 per security. MS & Co. will not receive a sales commission with respect to the securities. MS & Co. is an affiliate of MSFL and a wholly owned subsidiary of Morgan Stanley, and it and other affiliates of ours expect to make a profit by selling, structuring and, when applicable, hedging the securities. When MS & Co. prices this offering of securities, it will determine the economic terms of the securities, including the early redemption payment amount, such that for each security the estimated value on the pricing date will be no lower than the minimum level described in “Investment Summary” beginning on page 3. MS & Co. will conduct this offering in compliance with the requirements of FINRA Rule 5121 of the Financial Industry Regulatory Authority, Inc., which is commonly referred to as FINRA, regarding a FINRA member firm’s distribution of the securities of an affiliate and related conflicts of interest. MS & Co. or any of our other affiliates may not make sales in this offering to any discretionary account. See “Plan of Distribution (Conflicts of Interest)” and “Use of Proceeds and Hedging” in the accompanying product supplement for auto-callable securities.

Where you can find more information:

Morgan Stanley and MSFL have filed a registration statement (including a prospectus, as supplemented by the product supplement for auto-callable securities and the index supplement) with the Securities and Exchange Commission, or SEC, for the offering to which this communication relates. You should read the prospectus in that registration statement, the product supplement for auto-callable securities, the index supplement and any other documents relating to this offering that Morgan Stanley and MSFL have filed with the SEC for more complete information about Morgan Stanley, MSFL and this offering. When you read the accompanying product supplement and index supplement, please note that all references in such supplements to the prospectus dated November 16, 2023, or to any sections therein, should refer instead to the accompanying prospectus dated February 22, 2024 or to the corresponding sections of such prospectus, as applicable. You may get these documents without cost by visiting EDGAR on the SEC web site at www.sec.gov. Alternatively, Morgan Stanley, MSFL, any underwriter or any dealer participating in the offering will arrange to send you the prospectus, the product supplement for auto-callable securities and the index supplement if you so request by calling toll-free 1-(800)-584-6837. You may access these documents on the SEC web site atwww.sec.gov as follows: Product Supplement for Auto-Callable Securities dated November 16, 2023 Index Supplement dated November 16, 2023 Prospectus dated February 22, 2024 Terms used but not defined in this document are defined in the product supplement for auto-callable securities, in the index supplement or in the prospectus.

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