SUMMARY TERMS

Issuer:

Morgan Stanley Finance LLC

Guarantor:

Morgan Stanley

Underlying indices:

Russell 2000® Index (the "RTY Index"), Nasdaq-100 Index® (the "NDX Index") and S&P 500® Index (the "SPX Index")

Aggregate principal amount:

$

Stated principal amount:

$1,000 per security

Issue price:

$1,000 per security (see "Commissions and issue price" below)

Pricing date:

November 22, 2024

Original issue date:

November 27, 2024 (3 business days after the pricing date)

Maturity date:

December 1, 2025

Early redemption:

The securities are not subject to automatic early redemption until six months after the original issue date. Following this initial 6-month non-call period, if, on any redemption determination date, beginning on May 21, 2025, the index closing value of each underlying index is greater than or equal to its respective initial index value, the securities will be automatically redeemed for an early redemption payment on the related early redemption date. No further payments will be made on the securities once they have been redeemed.

The securities will not be redeemed early on any early redemption date if the index closing value of any underlying index is below the respective initial index value for such underlying index on the related redemption determination date.

Early redemption payment:

The early redemption payment will be an amount equal to (i) the stated principal amount for each security you hold plus (ii) the monthly coupon for the related interest period.

Monthly coupon:

Unless the securities have been previously redeemed, a fixed coupon at an annual rate of at least 7.90% (corresponding to approximately $6.583 per month per security, to be determined on the pricing date) will be paid on each coupon payment date.

Payment at maturity:

If the securities have not been automatically redeemed prior to maturity, the payment at maturity will be determined as follows:

If the final index value of each underlying index is greater than or equal to its respective downside threshold level, investors will receive the stated principal amount plus the monthly coupon for the final interest period.

If the final index value of any underlying index is less than its respective downside threshold level, investors will receive (i) the monthly coupon for the final interest period plus (ii) the product of (a) the stated principal amount and (b) the index performance factor of the worst performing underlying index. Under these circumstances, the payment at maturity will be less than 70% of the stated principal amount of the securities and could be zero.

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 $985.50 per security, or within $35.00 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

$

$

$

Terms continued from previous page:

Redemption determination dates:

Beginning after six months, monthly, on May 21, 2025, June 24, 2025, July 23, 2025, August 22, 2025, September 24, 2025 and October 22, 2025, subject to postponement for non-index business days and certain market disruption events.

Early redemption dates:

Beginning after six months, monthly, on May 27, 2025, June 27, 2025, July 28, 2025, August 27, 2025, September 29, 2025 and October 27, 2025. If any such day is not a business day, that early redemption payment will be made on the next succeeding business day and no adjustment will be made to any early redemption payment made on that succeeding business day.

Downside threshold level:

With respect to the RTY Index: , which is 70% of its initial index value

With respect to the NDX Index: , which is 70% of its initial index value

With respect to the SPX Index: , which is 70% of its initial index value

Initial index value:

With respect to the RTY Index: , which is its index closing value on the pricing date

With respect to the NDX Index: , which is its index closing value on the pricing date

With respect to the SPX Index: , which is its index closing value on the pricing date

Final index value:

With respect to each index, the respective index closing value on the final observation date

Worst performing underlying index:

The underlying index with the largest percentage decrease from the respective initial index value to the respective final index value

Index performance factor:

Final index value divided by the initial index value

Coupon payment dates:

Monthly, on the 27th day of each month, beginning in December 2024; provided that if any such day is not a business day, that monthly coupon will be paid on the next succeeding business day and no adjustment will be made to any coupon payment made on that succeeding business day. The monthly coupon for November 2025 will be paid on the maturity date.

Final observation date:

November 25, 2025, subject to postponement for non-index business days and certain market disruption events.

CUSIP / ISIN:

61776WZV8 / US61776WZV89

Listing:

The securities will not be listed on any securities exchange.

Maturity:

Approximately 1 year

Monthly coupon:

A monthly coupon at an annual rate of at least 7.90% (corresponding to approximately $6.583 per month per security, to be determined on the pricing date) will be paid on the securities on each coupon payment date.

Automatic early redemption (beginning after six months):

If the index closing value of each underlying index is greater than or equal to its initial index value on any monthly redemption determination date, beginning on May 21, 2025 (approximately six months after the original issue date), the securities will be automatically redeemed for an early redemption payment equal to the stated principal amount plus the monthly coupon for the related interest period.

Payment at maturity:

If the securities have not been automatically redeemed prior to maturity, the payment at maturity will be determined as follows:

If the final index value of each underlying index is greater than or equal to its respective downside threshold level, investors will receive the stated principal amount plus the monthly coupon for the final interest period.

If the final index value of any underlying index is less than its respective downside threshold level, investors will receive (i) the monthly coupon for the final interest period plus (ii) the product of (a) the stated principal amount and (b) the index performance factor of the worst performing underlying index. Under these circumstances, the payment at maturity will be less than 70% 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.

Scenario 1: The securities are redeemed prior to maturity

Starting after six months, when each underlying index closes at or above its respective initial index value on a monthly redemption determination date, the securities will be automatically redeemed for the stated principal amount plus the monthly coupon for the related monthly interest period. No further payments will be made on the securities once they have been redeemed. Investors will not participate in any appreciation of any underlying index.

Scenario 2: The securities are not redeemed prior to maturity, and investors receive principal back at maturity

This scenario assumes that each underlying index closes below its respective initial index value on every monthly redemption determination date. Consequently, the securities are not automatically redeemed.

On the final observation date, each underlying index closes at or above its respective downside threshold level. At maturity, investors will receive the stated principal amount plus the monthly coupon for the final interest period. Investors will not participate in any appreciation of any underlying index.

Scenario 3: The securities are not redeemed prior to maturity, and investors suffer a substantial loss of principal at maturity

This scenario assumes that each underlying index closes below its respective initial index value on every monthly redemption determination date. Consequently, the securities are not automatically redeemed.

On the final observation date, one or more underlying indices close below the respective downside threshold level(s). At maturity, investors will receive (i) the monthly coupon for the final interest period plus (ii) the product of (a) the stated principal amount and (b) the index performance factor of the worst performing underlying index. Under these circumstances, the payment at maturity will be less than 70% of the stated principal amount and could be zero.

Hypothetical Monthly Coupon:

7.90% per annum (corresponding to approximately $6.583 per month per security1)

Automatic Early Redemption (starting after six months):

If the index closing value of each underlying index is greater than or equal to its respective initial index value on any monthly redemption determination date, the securities will be automatically redeemed for an early redemption payment equal to the stated principal amount plus the monthly coupon for the related monthly interest period.

Payment at Maturity (if the securities have not been automatically redeemed early):

If the final index value of each underlying index is greater than or equal to its respective downside threshold level, investors will receive the stated principal amount plus the monthly coupon for the final interest period.

If the final index value of any underlying index is less than its respective downside threshold level, investors will receive (i) the monthly coupon for the final interest period plus (ii) the product of (a) the stated principal amount and (b) the index performance factor of the worst performing underlying index. Under these circumstances, the payment at maturity will be less than 70% of the stated principal amount of the securities and could be zero.

Stated Principal Amount:

$1,000 per security

Hypothetical Initial Index Value:

With respect to the RTY Index: 1,200

With respect to the NDX Index: 7,600

With respect to the SPX Index: 3,000

Hypothetical Downside Threshold Level:

With respect to the RTY Index: 840, which is 70% of the hypothetical initial index value for such index

With respect to the NDX Index: 5,320, which is 70% of the hypothetical initial index value for such index

With respect to the SPX Index: 2,100, which is 70% of the hypothetical initial index value for such index

Index Closing Value

Early Redemption Payment*

RTY Index

NDX Index

SPX Index

Hypothetical Redemption Determination Date 1

1,750 (at or above the initial index value)

8,800 (at or above the initial index value)

2,700 (below the initial index value)

N/A

Hypothetical Redemption Determination Date 2

1,400 (at or above the initial index value)

8,000 (at or above the initial index value)

3,200 (at or above the initial index value)

$1,006.583 (the stated principal amount plus the monthly coupon for the related monthly interest period)

Final Index Value

Payment at Maturity

(in addition to the monthly coupon of $6.583 for the final interest period)

RTY Index

NDX Index

SPX Index

Example 1:

540 (below the downside threshold level)

3,600 (below the downside threshold level)

2,500 (at or above the downside threshold level)

$1,000 × index performance factor of the worst performing underlying index =
$1,000 × (540 / 1,200) = $450

Example 2:

1,200 (at or above the downside threshold level)

5,600 (at or above the downside threshold level)

1,200 (below the downside threshold level)

$1,000 × (1,200 / 3,000) = $400

Example 3:

540 (below the downside threshold level)

3,040 (below the downside threshold level)

900 (below the downside threshold level)

$1,000 × (900 / 3,000) = $300

Example 4:

360 (below the downside threshold level)

3,040 (below the downside threshold level)

1,200 (below the downside threshold level)

$1,000 × (360 / 1,200) = $300

Example 5:

1,300 (at or above the downside threshold level)

8,000 (at or above the downside threshold level)

3,300 (at or above the downside threshold level)

The stated principal amount

Bloomberg Ticker Symbol:

RTY

52 Week High (on 11/8/2024):

2,399.639

Current Index Value:

2,399.639

52 Week Low (on 11/9/2023):

1,687.239

52 Weeks Ago:

1,714.068

RTY Index Daily Closing Values

January 1, 2019 to November 8, 2024

*The red solid line indicates the downside threshold level, which is 70% of the initial index value.

Russell 2000® Index

High

Low

Period End

2019

First Quarter

1,590.062

1,330.831

1,539.739

Second Quarter

1,614.976

1,465.487

1,566.572

Third Quarter

1,585.599

1,456.039

1,523.373

Fourth Quarter

1,678.010

1,472.598

1,668.469

2020

First Quarter

1,705.215

991.160

1,153.103

Second Quarter

1,536.895

1,052.053

1,441.365

Third Quarter

1,592.287

1,398.920

1,507.692

Fourth Quarter

2,007.104

1,531.202

1,974.855

2021

First Quarter

2,360.168

1,945.914

2,220.519

Second Quarter

2,343.758

2,135.139

2,310.549

Third Quarter

2,329.359

2,130.680

2,204.372

Fourth Quarter

2,442.742

2,139.875

2,245.313

2022

First Quarter

2,272.557

1,931.288

2,070.125

Second Quarter

2,095.440

1,649.836

1,707.990

Third Quarter

2,021.346

1,655.882

1,664.716

Fourth Quarter

1,892.839

1,682.403

1,761.246

2023

First Quarter

2,001.221

1,720.291

1,802.484

Second Quarter

1,896.333

1,718.811

1,888.734

Third Quarter

2,003.177

1,761.609

1,785.102

Fourth Quarter

2,066.214

1,636.938

2,027.074

2024

First Quarter

2,124.547

1,913.166

2,124.547

Second Quarter

2,109.459

1,942.958

2,047.691

Third Quarter

2,263.674

2,026.727

2,229.970

Fourth Quarter (through November 8, 2024)

2,399.639

2,180.146

2,399.639

Bloomberg Ticker Symbol:

NDX

52 Week High (on 11/8/2024):

21,117.18

Current Index Value:

21,117.18

52 Week Low (on 11/9/2023):

15,187.90

52 Weeks Ago:

15,313.24

NDX Index Daily Closing Values

January 1, 2019 to November 8, 2024

*The red solid line indicates the downside threshold level, which is 70% of the initial index value.

Nasdaq-100 Index®

High

Low

Period End

2019

First Quarter

7,493.27

6,147.13

7,378.77

Second Quarter

7,845.73

6,978.02

7,671.08

Third Quarter

8,016.95

7,415.69

7,749.45

Fourth Quarter

8,778.31

7,550.79

8,733.07

2020

First Quarter

9,718.73

6,994.29

7,813.50

Second Quarter

10,209.82

7,486.29

10,156.85

Third Quarter

12,420.54

10,279.25

11,418.06

Fourth Quarter

12,888.28

11,052.95

12,888.28

2021

First Quarter

13,807.70

12,299.08

13,091.44

Second Quarter

14,572.75

13,001.63

14,554.80

Third Quarter

15,675.76

14,549.09

14,689.62

Fourth Quarter

16,573.34

14,472.12

16,320.08

2022

First Quarter

16,501.77

13,046.64

14,838.49

Second Quarter

15,159.58

11,127.57

11,503.72

Third Quarter

13,667.18

10,971.22

10,971.22

Fourth Quarter

12,041.89

10,679.34

10,939.76

2023

First Quarter

13,181.35

10,741.22

13,181.35

Second Quarter

15,185.48

12,725.11

15,179.21

Third Quarter

15,841.35

14,545.83

14,715.24

Fourth Quarter

16,906.80

14,109.57

16,825.93

2024

First Quarter

18,339.44

16,282.01

18,254.69

Second Quarter

19,908.86

17,037.65

19,682.87

Third Quarter

20,675.38

17,867.37

20,060.69

Fourth Quarter (through November 8, 2024)

21,117.18

19,773.30

21,117.18

Bloomberg Ticker Symbol:

SPX

52 Week High (on 11/8/2024):

5,995.54

Current Index Value:

5,995.54

52 Week Low (on 11/9/2023):

4,347.35

52 Weeks Ago:

4,382.78

SPX Index Daily Closing Values
January 1, 2019 to November 8, 2024

S&P 500® Index

High

Low

Period End

2019

First Quarter

2,854.88

2,447.89

2,834.40

Second Quarter

2,954.18

2,744.45

2,941.76

Third Quarter

3,025.86

2,840.60

2,976.74

Fourth Quarter

3,240.02

2,887.61

3,230.78

2020

First Quarter

3,386.15

2,237.40

2,584.59

Second Quarter

3,232.39

2,470.50

3,100.29

Third Quarter

3,580.84

3,115.86

3,363.00

Fourth Quarter

3,756.07

3,269.96

3,756.07

2021

First Quarter

3,974.54

3,700.65

3,972.89

Second Quarter

4,297.50

4,019.87

4,297.50

Third Quarter

4,536.95

4,258.49

4,307.54

Fourth Quarter

4,793.06

4,300.46

4,766.18

2022

First Quarter

4,796.56

4,170.70

4,530.41

Second Quarter

4,582.64

3,666.77

3,785.38

Third Quarter

4,305.20

3,585.62

3,585.62

Fourth Quarter

4,080.11

3,577.03

3,839.50

2023

First Quarter

4,179.76

3,808.10

4,109.31

Second Quarter

4,450.38

4,055.99

4,450.38

Third Quarter

4,588.96

4,273.53

4,288.05

Fourth Quarter

4,783.35

4,117.37

4,769.83

2024

First Quarter

5,254.35

4,688.68

5,254.35

Second Quarter

5,487.03

4,967.23

5,460.48

Third Quarter

5,762.48

5,186.33

5,762.48

Fourth Quarter (through November 8, 2024)

5,995.54

5,695.94

5,995.54

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.

Underlying index publisher:

With respect to the RTY Index, FTSE Russell, or any successor thereof.

With respect to the NDX Index, Nasdaq, Inc., or any successor thereof.

With respect to the SPX Index, S&P® Dow Jones Indices LLC, or any successor thereof.

Interest period:

The monthly period from and including the original issue date (in the case of the first interest period) or the previous scheduled coupon payment date, as applicable, to but excluding the following scheduled coupon payment date, with no adjustment for any postponement thereof.

Record date:

The record date for each coupon payment date shall be the date one business day prior to such scheduled coupon payment date; provided, however, that any coupon payable at maturity (or upon early redemption) shall be payable to the person to whom the payment at maturity or early redemption payment, as the case may be, shall be payable.

Downside threshold level:

The accompanying product supplement refers to the downside threshold level as the "trigger level."

Day-count convention:

Interest will be computed on the basis of a 360-day year of twelve 30-day months.

Postponement of early redemption dates and maturity date:

If any redemption determination date or the final observation date is postponed due to a non-index business day or certain market disruption events so that it falls less than two business days prior to the relevant early redemption date or the maturity date, as applicable, the early redemption date or the maturity date, as applicable, will be postponed to the second business day following that redemption determination date or final observation date as postponed, and no adjustment will be made to any payment made on that postponed date.

Index closing value:

With respect to the RTY Index, the index closing value on any index business day shall be determined by the calculation agent and shall equal the closing value of such underlying index or any successor index reported by Bloomberg Financial Services, or any successor reporting service the calculation agent may select, on such index business day. In certain circumstances, the index closing value for the RTY Index will be based on the alternate calculation of such underlying index as described under "Discontinuance of Any Underlying Index; Alteration of Method of Calculation" in the accompanying product supplement. The closing value of the RTY Index reported by Bloomberg Financial Services may be lower or higher than the official closing value of the RTY Index published by the underlying index publisher for such underlying index.

With respect to each of the NDX Index and the SPX Index, the index closing value on any index business day shall be determined by the calculation agent and shall equal the official closing value of such underlying index, or any successor index as defined under "Discontinuance of Any Underlying Index; Alteration of Method of Calculation" in the accompanying product supplement, published at the regular official weekday close of trading on such index business day by the underlying index publisher for such underlying index, as determined by the calculation agent. In certain circumstances, the index closing value for the NDX Index or the SPX Index will be based on the alternate calculation of such underlying index as described under "Discontinuance of Any Underlying Index; Alteration of Method of Calculation" in the accompanying product supplement.

Denominations:

$1,000 per security and integral multiples thereof

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 maturity date is postponed due to postponement of the final observation date, the issuer shall give notice of such postponement and, once it has been determined, of the date to which the maturity date has been rescheduled (i) to each registered holder of the securities by mailing notice of such postponement by first class mail, postage prepaid, to such

registered 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 a registered holder of the securities in the manner herein provided shall be conclusively presumed to have been duly given to such registered holder, whether or not such registered 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 maturity date, the business day immediately preceding the scheduled maturity date, and (ii) with respect to notice of the date to which the maturity date has been rescheduled, the business day immediately following the final observation date as postponed.

In the event that the securities are subject to early redemption, the issuer shall, (i) on the business day following the applicable redemption determination date, give notice of the early redemption 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 registered 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 to be delivered as monthly coupon with respect to each security on or prior to 10:30 a.m. (New York City time) on the business day preceding each coupon payment date, and (ii) deliver the aggregate cash amount due with respect to the monthly coupon to the trustee for delivery to the depositary, as holder of the securities, on the applicable coupon payment date.

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 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 to the trustee for delivery to the depositary, as holder of the securities, on the maturity date.

Additional Information:

Minimum ticketing size:

$1,000 / 1 security

Tax considerations:

Prospective investors should note that the discussion under the section called "United States Federal Taxation" in the accompanying product supplement does not apply to the securities issued under this document and is superseded by the following discussion.

The following is a general discussion of the material U.S. federal income tax consequences and certain estate tax consequences of ownership and disposition of the securities. This discussion applies only to initial investors in the securities who:

•purchase the securities at their "issue price," which will equal the first price at which a substantial amount of the securities is sold to the public (not including bond houses, brokers, or similar persons or organizations acting in the capacity of underwriters, placement agents or wholesalers); and

•hold the securities as capital assets within the meaning of Section 1221 of the Internal Revenue Code of 1986, as amended (the "Code").

This discussion does not describe all of the tax consequences that may be relevant to a holder in light of the holder's particular circumstances or to holders subject to special rules, such as:

•certain financial institutions;

•insurance companies;

•dealers and certain traders in securities or commodities;

•investors holding the securities as part of a "straddle," wash sale, conversion transaction, integrated transaction or constructive sale transaction;

•U.S. Holders (as defined below) whose functional currency is not the U.S. dollar;

•partnerships or other entities classified as partnerships for U.S. federal income tax purposes;

•regulated investment companies;

•real estate investment trusts; or

•tax-exempt entities, including "individual retirement accounts" or "Roth IRAs" as defined in Section 408 or 408A of the Code, respectively.

If an entity that is classified as a partnership for U.S. federal income tax purposes holds the securities, the U.S. federal income tax treatment of a partner will generally depend on the status of the partner and the activities of the partnership. If you are a partnership holding the securities or a partner in such a partnership, you should consult your tax adviser as to the particular U.S. federal tax consequences of holding and disposing of the securities to you.

As the law applicable to the U.S. federal income taxation of instruments such as the securities is technical and complex, the discussion below necessarily represents only a general summary. The effect of any applicable state, local or non-U.S. tax laws is not discussed, nor are any alternative minimum tax consequences or consequences resulting from the Medicare tax on investment income. Moreover, the discussion below does not address the consequences to taxpayers subject to special tax accounting rules under Section 451(b) of the Code.

This discussion is based on the Code, administrative pronouncements, judicial decisions and final, temporary and proposed Treasury regulations, all as of the date hereof, changes to any of which subsequent to the date hereof may affect the tax consequences described herein. Persons considering the purchase of the securities should consult their tax advisers with regard to the application of the U.S. federal income tax laws to their particular situations as well as any tax consequences arising under the laws of any state, local or non-U.S. taxing jurisdiction.

General

Due to the lack of any controlling legal authority, there is substantial uncertainty regarding the U.S. federal income tax consequences of an investment in the securities. We intend to treat a security, under current law, for U.S. federal income tax purposes, as a unit consisting of the following:

(i) a put right (the "Put Right") written by you to us that, if exercised, requires you to pay us an amount equal to the Deposit (as defined below) in exchange for a cash amount based on the performance of the worst performing underlying index; and

(ii) a deposit with us of a fixed amount of cash, equal to the issue price, to secure your obligation under the Put Right (the "Deposit") that pays interest based on our cost of borrowing at the time of issuance (the "Yield on the Deposit").

Based on the treatment set forth above, a portion of the coupon on the securities will be treated as the Yield on the Deposit, and the remainder will be attributable to the premium on the Put Right (the "Put Premium"). The Yield on the Deposit will be determined by us as of the pricing date and set forth in the applicable pricing supplement.

We will allocate 100% of the issue price of the securities to the Deposit and none to the Put Right. Our allocation of the issue price between the Put Right and the Deposit will be binding on you, unless you timely and explicitly disclose to the Internal Revenue Service (the "IRS") that your allocation is different from ours. This allocation is not, however, binding on the IRS or a court.

No statutory, judicial or administrative authority directly addresses the treatment of the securities or instruments similar to the securities for U.S. federal income tax purposes, and no ruling is being requested from the IRS with respect to the securities. Significant aspects of the U.S. federal income tax consequences of an investment in the securities are uncertain, and no assurance can be given that the IRS or a court will agree with the tax treatment described herein. In the opinion of our counsel, Davis Polk & Wardwell LLP, the treatment of the securities described above is reasonable under current law; however, our counsel has advised us that it is unable to conclude affirmatively that this treatment is more likely than not to be upheld, and that alternative treatments are possible. Moreover, our counsel's opinion is based on market conditions as of the date of this preliminary pricing supplement and is subject to confirmation on the pricing date. Accordingly, you should consult your tax adviser regarding the U.S. federal income tax consequences of an investment in the securities (including alternative treatments of the securities). Unless otherwise stated, the following discussion is based on the treatment and the allocation described above.

Tax Consequences to U.S. Holders

This section applies to you only if you are a U.S. Holder. As used herein, the term "U.S. Holder" means a beneficial owner of a security that is, for U.S. federal income tax purposes:

•a citizen or individual resident of the United States;

•a corporation, or other entity taxable as a corporation, created or organized in or under the laws of the United States, any state thereof or the District of Columbia; or

•an estate or trust the income of which is subject to U.S. federal income taxation regardless of its source.

Tax Treatment of the Securities

Assuming the treatment of the securities and allocation of the issue price as set forth above are respected, the following U.S. federal income tax consequences should result.

Coupon Payments on the Securities. Under the characterization described above under "-General," only a portion of the coupon payments on the securities will be attributable to the Yield on the Deposit. The remainder of the coupon payments will represent payments attributable to the Put Premium. To the extent attributable to the Yield on the Deposit, coupon

payments on the securities should generally be taxable to a U.S. Holder as ordinary interest income at the time accrued or received, in accordance with the U.S. Holder's method of accounting for U.S. federal income tax purposes.

The Put Premium will not be taxable to a U.S. Holder upon receipt but will be accounted for as described below.

Tax Basis. Based on our determination set forth above, the U.S. Holder's initial tax basis in the Deposit will be 100% of the issue price. The determination of gain or loss with respect to the Put Right is described below.

Receipt of Stated Principal Amount in Cash upon Settlement of the Securities. If a U.S. Holder receives the stated principal amount of a security in cash (excluding cash attributable to coupon payments on the security, which would be taxed as described above under "-Coupon Payments on the Securities"), the Put Right will be deemed to have expired unexercised. In such case, the U.S. Holder will not recognize any gain upon the return of the Deposit, but will recognize the total amount of Put Premium received by the U.S. Holder over the term of the securities (including Put Premium received upon settlement) as short-term capital gain at such time.

Receipt of a Cash Amount Based on the Performance of the Worst Performing Underlying Index upon Maturity of the Securities. If a U.S. Holder receives an amount of cash (excluding cash attributable to coupon payments on the securities, which would be taxed as described above under "-Coupon Payments on the Securities") that is less than the stated principal amount of the securities, the Put Right will be deemed to have been exercised and the U.S. Holder will be deemed to have applied the Deposit toward the cash settlement of the Put Right. In such case, the U.S. Holder will not recognize any gain or loss in respect of the Deposit, but will recognize short-term capital gain or loss in an amount equal to the difference between (i) the amount of cash received by the U.S. Holder at maturity (excluding cash attributable to coupon payments on the securities), plus the total Put Premium received by the U.S. Holder over the term of the securities (including the Put Premium received at maturity) and (ii) the Deposit.

Sale or Exchange of the Securities Prior to Settlement. Upon the sale or exchange of a security, a U.S. Holder will generally recognize long-term capital gain or loss with respect to the Deposit if the U.S. Holder has held the securities for more than one year at the time of such sale or exchange and short-term capital gain or loss otherwise. The U.S. Holder will also generally recognize short-term capital gain or loss with respect to the Put Right. For the purpose of determining such gain or loss, a U.S. Holder should apportion the amount realized on the sale or exchange of a security (excluding any amount attributable to accrued but unpaid Yield on the Deposit, which would be taxed as described under "-Coupon Payments on the Securities") between the Deposit and the Put Right based on their respective values on the date of such sale or exchange. The amount of capital gain or loss on the Deposit will equal the amount realized that is attributable to the Deposit, less the U.S. Holder's adjusted tax basis in the Deposit. The amount realized that is attributable to the Put Right, together with the total Put Premium received by the U.S. Holder over the term of the security, will be treated as short-term capital gain.

If the value of the Deposit on the date of such sale or exchange exceeds the total amount realized on the sale or exchange of the security, the U.S. Holder will be treated as having (i) sold or exchanged the Deposit for an amount equal to its value on that date and (ii) made a payment (the "Put Right Assumption Payment") to the purchaser of the security equal to the amount of such excess, in exchange for the purchaser's assumption of the U.S. Holder's rights and obligations under the Put Right. In such a case, the U.S. Holder will recognize short-term capital gain or loss in respect of the Put Right in an amount equal to the total Put Premium received by the U.S. Holder over the term of the security, less the amount of the Put Right Assumption Payment deemed to be made by the U.S. Holder.

Possible Alternative Tax Treatments of an Investment in the Securities

Due to the absence of authorities that directly address the proper characterization of the securities, no assurance can be given that the IRS will accept, or that a court will uphold, the

treatment described above. In particular, there is a substantial risk that the IRS could seek to treat a security or the Deposit as a debt instrument subject to Treasury regulations governing contingent payment debt instruments (the "Contingent Debt Regulations").

If the IRS were successful in asserting that the Contingent Debt Regulations applied to the securities or to the Deposit, the timing and character of income thereon would be significantly affected. Among other things, a U.S. Holder would be required to accrue interest income as original issue discount, subject to adjustments, at a "comparable yield" based on our cost of borrowing. Furthermore, if the securities or Deposit were treated as contingent payment debt instruments, any gain realized with respect to the securities or the Deposit would generally be treated 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.

Even if the Contingent Debt Regulations do not apply to the securities, other alternative U.S. federal income tax characterizations or treatments of the securities are also possible, which if applied could significantly affect the timing and character of the income or loss with respect to the securities. It is possible, for example, that a security could be treated as constituting an "open transaction" with the result that the coupon payments on the securities might not be accounted for separately as giving rise to income to U.S. Holders until the sale, exchange or settlement of the securities. Alternatively, the entire coupon on the securities could be required to be included in income by a U.S. Holder at the time received or accrued. Other alternative characterizations are also possible. Accordingly, prospective purchasers should consult their tax advisers regarding the U.S. federal income tax consequences of an investment in the securities.

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. While it is not clear whether the securities would be viewed as similar to the prepaid forward contracts described in the notice, it is possible that 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. The notice focuses on a number of issues, the most relevant of which for U.S. Holders of the securities is the character and timing of income or loss realized with respect to these instruments (including whether the Put Premium might be required to be included currently as ordinary income). Accordingly, prospective investors should consult their tax advisers regarding all aspects of the U.S. federal income tax consequences of an investment in the securities, including the possible implications of this notice.

Backup Withholding and Information Reporting

Backup withholding may apply in respect of payments on the securities and the payment of proceeds from a sale, exchange or other disposition of the securities, unless a U.S. Holder provides proof of an applicable exemption or a correct taxpayer identification number, and otherwise complies with applicable requirements of the backup withholding rules. The amounts withheld under the backup withholding rules are not an additional tax and may be refunded, or credited against the U.S. Holder's U.S. federal income tax liability, provided that the required information is timely furnished to the IRS. In addition, information returns will be filed with the IRS in connection with payments on the securities and the payment of proceeds from a sale, exchange or other disposition of the securities, unless the U.S. Holder provides proof of an applicable exemption from the information reporting rules.

Tax Consequences to Non-U.S. Holders

This section applies to you only if you are a Non-U.S. Holder. As used herein, the term "Non-U.S. Holder" means a beneficial owner of a security that is, for U.S. federal income tax purposes:

•an individual who is classified as a nonresident alien;

•a foreign corporation; or

•a foreign trust or estate.

The term "Non-U.S. Holder" does not include any of the following holders:

•a holder who is an individual present in the United States for 183 days or more in the taxable year of disposition and who is not otherwise a resident of the United States for U.S. federal income tax purposes;

•certain former citizens or residents of the United States; or

•a holder for whom income or gain in respect of the securities is effectively connected with the conduct of a trade or business in the United States.

Such holders should consult their tax advisers regarding the U.S. federal income tax consequences of an investment in the securities.

General

Assuming the treatment of the securities as set forth above is respected and subject to the discussions below regarding the potential application of Section 871(m) of the Code and FATCA, payments with respect to a security, and gain realized on the sale, exchange or other disposition of such security, should not be subject to U.S. federal income or withholding tax under current law, provided that:

•the Non-U.S. Holder does not own, directly or by attribution, ten percent or more of the total combined voting power of all classes of our stock entitled to vote;

•the Non-U.S. Holder is not a controlled foreign corporation related, directly or indirectly, to us through stock ownership;

•the Non-U.S. Holder is not a bank receiving interest under Section 881(c)(3)(A) of the Code; and

•the certification requirement described below has been fulfilled with respect to the beneficial owner.

Certification Requirement. The certification requirement referred to in the preceding paragraph will be fulfilled if the beneficial owner of a security (or a financial institution holding a security on behalf of the beneficial owner) furnishes to the applicable withholding agent an IRS Form W-8BEN (or other appropriate form), on which the beneficial owner certifies under penalties of perjury that it is not a U.S. person.

Possible Alternative Tax Treatments of an Investment in the Securities

As described above under "-Tax Consequences to U.S. Holders-Possible Alternative Tax Treatments of an Investment in the Securities," the IRS may seek to apply a different characterization and tax treatment from the treatment described herein. While the U.S. federal income and withholding tax consequences to a Non-U.S. Holder of ownership and disposition of a security under current law should generally be the same as those described immediately above, it is possible that a Non-U.S. Holder could be subject to withholding tax under certain recharacterizations of the securities.

Moreover, among the issues addressed in the IRS notice described in "-Tax Consequences to U.S. Holders" is the degree, if any, to which income realized by Non-U.S. Holders should be subject to withholding tax. It is possible that any Treasury regulations or other guidance issued after consideration of this issue could materially and adversely affect the withholding tax consequences of ownership and disposition of the securities, possibly with retroactive effect. Accordingly, prospective investors should consult their tax advisers regarding all aspects of the U.S. federal income tax consequences of an investment in the securities, including the possible implications of the notice discussed above. Prospective investors should note that we currently do not intend to withhold on any of the payments made with respect to the securities to Non-U.S. Holders (subject to compliance by such holders with the certification requirement described above and to the discussion below regarding FATCA). However, in the event of a change of law or any formal or informal guidance by the IRS, the U.S. Treasury Department or Congress, we (or any financial intermediary) may decide to withhold on payments made with respect to the securities to Non-U.S. Holders and we will not be required

to pay any additional amounts with respect to amounts withheld.

Section 871(m) Withholding Tax on Dividend Equivalents

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, 2027 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 updated determination in the final 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 Section 871(m) 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.

U.S. Federal Estate Tax

Individual Non-U.S. Holders and entities the property of which is potentially includible in such an individual's gross estate for U.S. federal estate tax purposes (for example, a trust funded by such an individual and with respect to which the individual has retained certain interests or powers), should note that, absent an applicable treaty exemption, the securities may be treated as U.S. situs property subject to U.S. federal estate tax. Prospective investors that are non-U.S. individuals, or are entities of the type described above, should consult their tax advisers regarding the U.S. federal estate tax consequences of an investment in the securities.

Backup Withholding and Information Reporting

Information returns will be filed with the IRS in connection with any coupon payment and may be filed with the IRS in connection with the payment at maturity on the securities and the payment of proceeds from a sale, exchange or other disposition of the securities. A Non-U.S. Holder may be subject to backup withholding in respect of amounts paid to the Non-U.S. Holder, unless such Non-U.S. Holder complies with certification procedures to establish that it is not a U.S. person for U.S. federal income tax purposes or otherwise establishes an exemption. Compliance with the certification procedures described under "-General-Certification Requirement" will satisfy the certification requirements necessary to avoid backup withholding as well. The amount of any backup withholding from a payment to a Non-U.S. Holder will be allowed as a credit against the Non-U.S. Holder's U.S. federal income tax liability and may entitle the Non-U.S. Holder to a refund, provided that the required information is timely furnished to the IRS.

FATCA

Legislation commonly referred to as "FATCA" generally imposes a withholding tax of 30% on payments to certain non-U.S. entities (including financial intermediaries) with respect to certain financial instruments, unless various U.S. information reporting and due diligence requirements have been satisfied. An intergovernmental agreement between the United States and the non-U.S. entity's jurisdiction may modify these requirements. FATCA generally applies to certain financial instruments that are treated as paying U.S.-source interest or other U.S.-source "fixed or determinable annual or periodical" income ("FDAP income"). Withholding (if

applicable) applies to payments of U.S.-source FDAP income and to payments of gross proceeds of the disposition (including upon retirement) of certain financial instruments treated as providing for U.S.-source interest or dividends. Under proposed regulations (the preamble to which specifies that taxpayers are permitted to rely on them pending finalization), no withholding will apply on payments of gross proceeds (other than amounts treated as interest or other FDAP income). While the treatment of the securities is unclear, you should assume that the yield on the Deposit will be subject to the FATCA rules. It is also possible in light of this uncertainty that an applicable withholding agent will treat the entire amount of the coupon payments as being subject to the FATCA rules. If withholding applies to the securities, we will not be required to pay any additional amounts with respect to amounts withheld. Both U.S. and Non-U.S. Holders should consult their tax advisers regarding the potential application of FATCA to the securities.

The discussion in the preceding paragraphs, insofar as it purports to describe provisions of U.S. federal income tax laws or legal conclusions with respect thereto, constitutes 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 expect to 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 stocks constituting the underlying indices, in futures and/or options contracts on the underlying indices or the component stocks of the underlying indices listed on major securities markets, 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 index value of an underlying index, and, as a result, could increase (i) the level at or above which such underlying index must close on any redemption 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 indices) and (ii) the level at or above which such underlying index must close on the final observation date so that you are not exposed to the negative performance of the worst performing underlying index at maturity (depending also on the performance of the other underlying indices). 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 observation date approaches. Additionally, our hedging activities, as well as our other trading activities, during the term of the securities could potentially affect the value of an underlying index on the redemption determination dates and the final observation date and, accordingly, whether we redeem the securities prior to maturity and the amount of cash you receive at maturity, if any (depending also on the performance of the other underlying indices).

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.

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 monthly coupon rate, 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 April 12, 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 at www.sec.gov as follows:

Product Supplement for Auto-Callable Securities dated November 16, 2023

Index Supplement dated November 16, 2023

Prospectus dated April 12, 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.