FWP 1 b610263fwp.htm PSARC 1028

Registration Statement No.333-285508
Filed Pursuant to Rule 433

Subject to Completion, dated June 10, 2026
Pricing Supplement to the Prospectus dated March 25, 2025,
the Prospectus Supplement dated March 25, 2025 and the Product Supplement dated March 25, 2025

US$ [ ]
Senior Medium-Term Notes, Series K
Barrier Notes due December 14, 2026
Linked to the American Depositary Receipts of Abivax SA

The notes are designed for investors who seek periodic interest payments at the interest rate (the "Interest Rate") of 2.8667% per month (approximately 34.40% per annum). Investors should be willing to forego any potential to participate in the appreciation of the American Depositary Receipts of Abivax SA (the “Reference Asset”), and be willing to lose some or all of their principal at maturity.

The notes will pay a Coupon on each Coupon Payment Date at the Interest Rate.

The notes do not guarantee any return of principal at maturity. Instead, the payment at maturity will be based on the Final Level of the Reference Asset and whether the Final Level of that Reference Asset has declined from its Initial Level to below its Trigger Level on any trading day during the Monitoring Period.

If a Trigger Event has occurred, you will receive a delivery of shares of the Reference Asset (the “Physical Delivery Amount”) or, at our election, the cash equivalent (calculated as described below, the “Cash Delivery Amount”), which will be worth less than the principal amount, together with the final Coupon. Specifically, the value of any Physical Delivery Amount or Cash Delivery Amount that you receive will decrease 1% for each 1% decrease in the level of the Reference Asset from its Initial Level to its Final Level. Any fractional shares included in the Physical Delivery Amount will be paid in cash. Even with Interest payments, the return on the notes may be negative.

Investing in the notes is not equivalent to a direct investment in the Reference Asset.

The notes will not be listed on any securities exchange.

All payments on the notes are subject to the credit risk of Bank of Montreal.

The notes will be issued in minimum denominations of $1,000 and integral multiples of $1,000.

Our subsidiary, BMO Capital Markets Corp. (“BMOCM”), is the agent for this offering. See “Supplemental Plan of Distribution (Conflicts of Interest)” below.

The notes will not be subject to conversion into our common shares or the common shares of any of our affiliates under subsection 39.2(2.3) of the Canada Deposit Insurance Corporation Act (the “CDIC Act”).

Terms of the Notes:¹

Strike Date:	June 09, 2026
Pricing Date:	June 10, 2026	Valuation Date:	December 09, 2026
Settlement Date:	June 12, 2026	Maturity Date:	December 14, 2026

¹Expected. See “Key Terms of the Notes” below for additional details.

Specific Terms of the Notes:

Series
Number

Reference
Asset

Ticker
Symbol

Initial
Level

Interest Rate

Trigger
Level*

CUSIP

Principal
Amount

Price to
Public¹

Agent’s
Commission¹

Proceeds to
Bank of
Montreal¹

1028

The American Depositary Receipts of Abivax SA

ABVX

$102.72

2.8667% per month (approximately 34.40% per annum)

$66.77, 65.00% of its Initial Level

06370EHC5

[ ]

100%

Up to 1.00%

[ ]

At least 99.00%

[ ]

¹ The total “Agent’s Commission” and “Proceeds to Bank of Montreal” to be specified above will reflect the aggregate amounts at the time Bank of Montreal establishes its hedge positions on or prior to the Pricing Date, which may be variable and fluctuate depending on market conditions at such times. Certain dealers who purchased the notes for sale to certain fee-based advisory accounts may forego some or all of their selling concessions, fees or commissions. The public offering price for investors purchasing the notes in these accounts may be between $990.00 and $1,000 per $1,000 in principal amount. We or one of our affiliates may also pay a referral fee to certain dealers in connection with the distribution of the notes.

* Rounded to two decimal places.

Investing in the notes involves risks, including those described in the “Selected Risk Considerations” section beginning on page P-5 hereof, the “Additional Risk Factors Relating to the Notes” section beginning on page PS-6 of the product supplement, and the “Risk Factors” section beginning on page S-1 of the prospectus supplement and on page 8 of the prospectus.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these notes or passed upon the accuracy of this document, the product supplement, the prospectus supplement or the prospectus. Any representation to the contrary is a criminal offense. The notes will be our unsecured obligations and will not be savings accounts or deposits that are insured by the United States Federal Deposit Insurance Corporation, the Deposit Insurance Fund, the Canada Deposit Insurance Corporation or any other governmental agency or instrumentality or other entity.

On the date hereof, based on the terms set forth above, the estimated initial value of the notes is $940.20 per $1,000 in principal amount. The estimated initial value of the notes on the Pricing Date may differ from this value but will not be less than $895.00 per $1,000 in principal amount. However, as discussed in more detail below, the actual value of the notes at any time will reflect many factors and cannot be predicted with accuracy.

BMO CAPITAL MARKETS

Key Terms of the Notes:

Reference Asset:	The American Depositary Receipts of Abivax SA (ticker symbol "ABVX"). See "The Reference Asset" below for additional information.

Coupons:	A Coupon will be paid on the corresponding Coupon Payment Date at the Interest Rate.

Interest Rate:	2.8667% per month (approximately 34.40% per annum). Accordingly, each Coupon will equal $28.667 for each $1,000 in principal amount.

Coupon Payment Dates:¹	Interest will be paid on the 14th day of each month (or, if such day is not a business day, the next following business day), beginning on July 14, 2026 and ending on the Maturity Date.

Payment at Maturity:	You will receive $1,000 for each $1,000 in principal amount of the note, unless (a) a Trigger Event has occurred and (b) the Final Level of the Reference Asset is less than its Initial Level. If a Trigger Event has occurred and the Final Level of the Reference Asset is less than its Initial Level, you will receive at maturity, for each $1,000 in principal amount of your notes, a number of shares equal to the Physical Delivery Amount (or, at our election the Cash Delivery Amount). Fractional shares will be paid in cash. The Physical Delivery Amount will be less than the principal amount of your notes, and may be zero. You will also receive the final Coupon. Even with Coupons, the return on the notes may be negative.

Trigger Event:²	A Trigger Event will be deemed to occur if the closing level of the Reference Asset is less than its Trigger Level on any trading day during the Monitoring Period.

Monitoring Period:	The period from the Pricing Date to and including the Valuation Date.

Percentage Change:	The quotient, expressed as a percentage, of the following formula: (Final Level - Initial Level) Initial Level

Initial Level:²	As set forth on the cover hereof

Trigger Level:²	$66.77, which is 65.00% of the Initial Level (rounded to two decimal places).

Final Level:²	The closing level of the Reference Asset on the Valuation Date.

Strike Date:¹	June 09, 2026

Pricing Date:¹	June 10, 2026

Settlement Date:¹	June 12, 2026

Valuation Date:¹	December 09, 2026

Maturity Date:¹	December 14, 2026

Physical Delivery Amount:²	The number of shares of the Reference Asset equal to $1,000 divided by the Initial Level. Any fractional shares will be paid in cash.

Cash Delivery Amount:²	The amount in cash equal to the product of (1) the Physical Delivery Amount and (2) the Final Level of the Reference Asset.

Calculation Agent:	BMOCM

Selling Agent:	BMOCM

¹ Expected and subject to the occurrence of a market disruption event, as described in the accompanying product supplement. If we make any change to the expected Pricing Date and Settlement Date, the Coupon Payment Dates, the Valuation Date and Maturity Date will be changed so that the stated term of the notes remains approximately the same.

² As determined by the calculation agent and subject to adjustment in certain circumstances. See "General Terms of the Notes — Anti-dilution Adjustments to a Reference Asset that Is an Equity Security (Including Any ETF)" in the product supplement for additional information.

Additional Terms of the Notes

You should read this document together with the product supplement dated March 25, 2025, the prospectus supplement dated March 25, 2025 and the prospectus dated March 25, 2025. This document, together with the documents listed below, contains the terms of the notes and supersedes all other prior or contemporaneous oral statements as well as any other written materials including preliminary or indicative pricing terms, correspondence, trade ideas, structures for implementation, sample structures, fact sheets, brochures or other educational materials of ours or the agent. You should carefully consider, among other things, the matters set forth in Additional Risk Factors Relating to the Notes in the product supplement, as the notes involve risks not associated with conventional debt securities. We urge you to consult your investment, legal, tax, accounting and other advisers before you invest in the notes.

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

Product supplement dated March 25, 2025:

https://www.sec.gov/Archives/edgar/data/927971/000121465925004743/b324250424b2.htm

Prospectus supplement dated March 25, 2025 and prospectus dated March 25, 2025:

https://www.sec.gov/Archives/edgar/data/927971/000119312525062081/d840917d424b5.htm

Our Central Index Key, or CIK, on the SEC website is 927971. As used in this document, "we", "us" or "our" refers to Bank of Montreal.

We have filed a registration statement (including a prospectus) with the SEC for the offering to which this document relates. Before you invest, you should read the prospectus in that registration statement and the other documents that we have filed with the SEC for more complete information about us and this offering. You may obtain these documents free of charge by visiting the SEC's website at http://www.sec.gov. Alternatively, we will arrange to send to you the prospectus (as supplemented by the prospectus supplement and product supplement) if you request it by calling our agent toll-free at 1-877-369-5412.

Selected Risk Considerations

An investment in the notes involves significant risks. Investing in the notes is not equivalent to investing directly in the Reference Asset. These risks are explained in more detail in the “Additional Risk Factors Relating to the Notes” section of the product supplement.

Risks Related to the Structure or Features of the Notes

Your investment in the notes may result in a loss. — The notes do not guarantee any return of principal. The payment at maturity will be based on the Final Level and whether a Trigger Event has occurred. If the closing level of the Reference Asset is less than the Trigger Level on any trading day during the Monitoring Period and the Final Level of the Reference Asset is less than its Initial Level, a Trigger Event will occur and you will receive at maturity a delivery of shares of the Reference Asset, or, at our election, the cash equivalent, which will be worth less than the principal amount of the notes and may be zero. Accordingly, even with Coupons, the return on the notes may be negative.

The protection provided by the Trigger Level may terminate on any trading day during the Monitoring Period. — If the closing level of the Reference Asset is less than the Trigger Level on any trading day during the Monitoring Period and the Final Level of the Reference Asset is less than its Initial Level, you will suffer a 1% loss on your investment for each 1% that the Final Level is less than the Initial Level. You will be subject to this potential loss of principal even if, after the Trigger Event occurs, the level of the Reference Asset increases above its Trigger Level.

Your return on the notes is limited to the Coupons regardless of any increase in the level of the Reference Asset — You will not receive a payment at maturity with a value greater than your principal amount plus the final Coupon. Accordingly, your maximum return on the applicable notes is limited to the potential return represented by the Coupons.

Any decline in the closing level of the Reference Asset from the Valuation Date to the Maturity Date will reduce the value of the Physical Delivery Amount. — If we deliver the Physical Delivery Amount on the Maturity Date instead of paying the Cash Delivery Amount, the number of shares deliverable will be determined on the Valuation Date. The market value of the Physical Delivery Amount on the Maturity Date may be less than the cash equivalent of such shares determined on the Valuation Date due to any decline in the closing level of the Reference Asset during the period between the Valuation Date and the Maturity Date. Conversely, if we pay the Cash Delivery Amount instead of delivering the Physical Delivery Amount on the Maturity Date, the Cash Delivery Amount will be determined on the Valuation Date and the payment that you receive on the Maturity Date may be less than the market value of such shares that you would have received had we instead delivered such shares due to fluctuations in their market value during the period between the Valuation Date and the Maturity Date.

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

A higher Interest Rate or lower Trigger Level may reflect greater expected volatility of the Reference Asset, and greater expected volatility generally indicates an increased risk of loss at maturity. — The economic terms for the notes, including the Interest Rate and Trigger Level, are based, in part, on the expected volatility of the Reference Asset at the time the terms of the notes are set. “Volatility” refers to the frequency and magnitude of changes in the level of the Reference Asset. The greater the expected volatility of the Reference Asset as of the Pricing Date, the greater the expectation is as of that date that a Trigger Event could occur and, as a consequence, an increased risk of loss. All things being equal, this greater expected volatility will generally be reflected in a higher Interest Rate than the yield payable on our conventional debt securities with a similar maturity or on otherwise comparable securities, and/or lower Trigger Level than those terms on otherwise comparable securities. Therefore, a relatively higher Interest Rate may indicate an increased risk of loss. Further, a relatively lower Trigger Level may not necessarily indicate that the notes have a greater likelihood of a return of principal at maturity. You should be willing to accept the downside market risk of the Reference Asset and the potential to lose a significant portion or all of your initial investment.

Risks Related to the Reference Asset

Owning the notes is not the same as owning shares of the Reference Asset or a security directly linked to the Reference Asset. — The return on your notes will not reflect the return you would realize if you actually owned shares of the Reference Asset or a security directly linked to the performance of the Reference Asset and held that investment for a similar period. Your notes may trade quite differently from the Reference Asset. Changes in the level of the Reference Asset may not result in comparable changes in the market value of your notes. Even if the level of the Reference Asset increases during the term of the notes, the market value of the notes prior to maturity may not increase to the same extent. It is also possible for the market value of the notes to decrease while the level of the Reference Asset increases. In addition, any dividends or other distributions paid on the Reference Asset will not be reflected in the amount payable on the notes.

You will not have any shareholder rights and will have no right to receive any shares of the Reference Asset. — Unless and until we choose to deliver shares of the Reference Asset at maturity, neither you nor any other holder or owner of the notes will have any voting rights, any right to receive dividends or other distributions, or any other rights with respect to the Reference Asset.

No delivery of shares of the Reference Asset at your option. — We may choose, in our sole discretion, whether to deliver the Physical Delivery Amount or pay the Cash Delivery Amount at maturity. You should not invest in the notes if you wish to elect whether to receive cash or shares at maturity.

Single equity risk. — The level of the Reference Asset can rise or fall sharply due to factors specific to the Reference Asset and the issuer of the Reference Asset (the “Reference Asset Issuer”), such as stock price volatility, earnings, financial conditions, corporate, industry and regulatory developments, management changes and decisions and other events, as well as general market factors, such as general stock market volatility and levels, interest rates and economic and political conditions. We urge you to review financial and other information filed periodically with the SEC by the Reference Asset Issuer. We are not affiliated with the Reference Asset Issuer and are not responsible for the Reference Asset Issuer’s public disclosure of information, whether contained in SEC filings or otherwise. We have not undertaken any independent review or due diligence of the SEC filings of the Reference Asset Issuer or of any other publicly available information regarding the Reference Asset Issuer.

You must rely on your own evaluation of the merits of an investment linked to the Reference Asset. — In the ordinary course of their businesses, our affiliates from time to time may express views on expected movements in the level of the Reference Asset. One or more of our affiliates have published, and in the future may publish, research reports that express views on the Reference Asset. However, these views are subject to change from time to time. Moreover, other professionals who deal in the markets relating to the Reference Asset at any time may have significantly different views from those of our affiliates. You are encouraged to derive information concerning the Reference Asset from multiple sources, and you should not rely on the views expressed by our affiliates.
Neither the offering of the notes nor any views which our affiliates from time to time may express in the ordinary course of their businesses constitutes a recommendation as to the merits of an investment in the notes.

General Risk Factors

Your investment is subject to the credit risk of Bank of Montreal. — Our credit ratings and credit spreads may adversely affect the market value of the notes. Investors are dependent on our ability to pay any amounts due on the notes, and therefore investors are subject to our credit risk and to changes in the market’s view of our creditworthiness. Any 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 value of the notes.

Potential conflicts. — We and our affiliates play a variety of roles in connection with the issuance of the notes, including acting as calculation agent. In performing these duties, the economic interests of the calculation agent and other affiliates of ours are potentially adverse to your interests as an investor in the notes. We or one or more of our affiliates may also engage in trading of shares of the Reference Asset on a regular basis as part of our general broker-dealer and other businesses, for proprietary accounts, for other accounts under management or to facilitate transactions for our customers. Any of these activities could adversely affect the level of the Reference Asset and, therefore, the market value of, and the payments on, the notes. We or one or more of our affiliates may also issue or underwrite other securities or financial or derivative instruments with returns linked or related to changes in the performance of the Reference Asset. By introducing competing products into the marketplace in this manner, we or one or more of our affiliates could adversely affect the market value of the notes.

Our initial estimated value of the notes will be lower than the price to public. — Our initial estimated value of the notes is only an estimate, and is based on a number of factors. The price to public of the notes will exceed our initial estimated value, because costs associated with offering, structuring and hedging the notes are included in the price to public, but are not included in the estimated value. These costs include any underwriting discount and selling concessions, the profits that we and our affiliates expect to realize for assuming the risks in hedging our obligations under the notes and the estimated cost of hedging these obligations. The initial estimated value of the notes may be as low as the amount indicated on the cover page hereof.

Our initial estimated value does not represent any future value of the notes, and may also differ from the estimated value of any other party. — Our initial estimated value of the notes as of the date hereof is, and our estimated value as determined on the Pricing Date will be, derived using our internal pricing models. This value is based on market conditions and other relevant factors, which include volatility of the Reference Asset, dividend rates and interest rates. Different pricing models and assumptions could provide values for the notes that are greater than or less than our initial estimated value. In addition, market conditions and other relevant factors after the Pricing Date are expected to change, possibly rapidly, and our assumptions may prove to be incorrect. After the Pricing Date, the value of the notes could change dramatically due to changes in market conditions, our creditworthiness, and the other factors set forth herein and in the product supplement. These changes are likely to impact the price, if any, at which we or BMOCM would be willing to purchase the notes from you in any secondary market transactions. Our initial estimated value does not represent a minimum price at which we or our affiliates would be willing to buy your notes in any secondary market at any time.

The terms of the notes are not determined by reference to the credit spreads for our conventional fixed-rate debt. — To determine the terms of the notes, we will use an internal funding rate that represents a discount from the credit spreads for our conventional fixed-rate debt. As a result, the terms of the notes are less favorable to you than if we had used a higher funding rate.

Certain costs are likely to adversely affect the value of the notes. — Absent any changes in market conditions, any secondary market prices of the notes will likely be lower than the price to public. This is because any secondary market prices will likely take into account our then-current market credit spreads, and because any secondary market prices are likely to exclude all or a portion of any underwriting discount and selling concessions, and the hedging profits and estimated hedging costs that are included in the price to public of the notes and that may be reflected on your account statements. In addition, any such price is also likely to reflect a discount to account for costs associated with establishing or unwinding any related hedge transaction, such as dealer discounts, mark-ups and other transaction costs. As a result, the price, if any, at which BMOCM or any other party may be willing to purchase the notes from you in secondary market transactions, if at all, will likely be lower than the price to public. Any sale that you make prior to the Maturity Date could result in a substantial loss to you.

Lack of liquidity. — The notes will not be listed on any securities exchange. BMOCM may offer to purchase the notes in the secondary market, but is not required to do so. Even if there is a secondary market, it may not provide enough liquidity to allow you to trade or sell the notes easily. Because other dealers are not likely to make a secondary market for the notes, the price at which you may be able to trade the notes is likely to depend on the price, if any, at which BMOCM is willing to buy the notes.

Hedging and trading activities. — We or any of our affiliates have carried out or may carry out hedging activities related to the notes, including purchasing or selling shares of the Reference Asset, futures or options relating to the Reference Asset or other derivative instruments with returns linked or related to changes in the performance on the Reference Asset. We or our affiliates may also trade in the Reference Asset or instruments related to the Reference Asset from time to time. Any of these hedging or trading activities on or prior to the Pricing Date and during the term of the notes could adversely affect the payments on the notes.

Many economic and market factors will influence the value of the notes. — In addition to the level of the Reference Asset and interest rates on any trading day, the value of the notes will be affected by a number of economic and market factors that may either offset or magnify each other, and which are described in more detail in the product supplement.

Significant aspects of the tax treatment of the notes are uncertain. — The tax treatment of the notes is uncertain. We do not plan to request a ruling from the Internal Revenue Service or from any Canadian authorities regarding the tax treatment of the notes, and the Internal Revenue Service or a court may not agree with the tax treatment described herein.
The Internal Revenue Service has released a notice that may affect the taxation of holders of “prepaid forward contracts” and similar instruments. According to the notice, the Internal Revenue Service and the U.S. Treasury are actively considering whether the holder of such instruments should be required to accrue ordinary income on a current basis. While it is not clear whether the notes would be viewed as similar to such instruments, it is possible that any future guidance could materially and adversely affect the tax consequences of an investment in the notes, possibly with retroactive effect.
Please read carefully the section entitled "U.S. Federal Tax Information" herein, the section entitled "Supplemental Tax Considerations—Supplemental U.S. Federal Income Tax Considerations" in the accompanying product supplement, the section entitled "United States Federal Income Taxation" in the accompanying prospectus and the section entitled "Certain Income Tax Consequences" in the accompanying prospectus supplement. You should consult your tax advisor about your own tax situation.

Examples of the Hypothetical Payout for a $1,000 Investment in the Notes

The following tables and examples illustrate the hypothetical payments on a note, assuming different scenarios. The hypothetical payments are based on a $1,000 investment, a hypothetical Initial Level of $100.00, a hypothetical Trigger Level of $65.00 (65.00% of the hypothetical Initial Level), a hypothetical interest rate of 2.8667% per month (approximately 34.40% per annum), and a range of hypothetical closing levels of the Reference Asset.

The hypothetical examples shown below are intended to help you understand the terms of the notes. The actual amount of cash or shares that you will receive at maturity will depend upon the Final Level of the Reference Asset. The numbers appearing in the following examples have been rounded for ease of analysis.

The table below illustrates the hypothetical total Coupons per note over the term of the notes based on the hypothetical terms set forth above. The hypothetical total Coupons paid per note over the term of the notes will be equal to the maximum amount shown in the table below.

Number of Coupons	Total Coupon Payments
1	$28.667
2	$57.333
3	$86.000
4	$114.667
5	$143.333
6	$172.000

The following table illustrates the hypothetical payments on a note at maturity.

Hypothetical Final Level	Hypothetical Final Level Expressed as a Percentage of the Initial Level	Payment at Maturity Assuming a Trigger Event Has Not Occurred (Excluding Coupons)*	Payment at Maturity Assuming a Trigger Event Has Occurred (Excluding Coupons)
$200.00	200.00%	$1,000.00	$1,000.00
$180.00	180.00%	$1,000.00	$1,000.00
$160.00	160.00%	$1,000.00	$1,000.00
$140.00	140.00%	$1,000.00	$1,000.00
$120.00	120.00%	$1,000.00	$1,000.00
$100.00	100.00%	$1,000.00	$1,000.00
$90.00	90.00%	$1,000.00	$900.00
$80.00	80.00%	$1,000.00	$800.00
$65.00	65.00%	$1,000.00	$650.00
$64.99	64.99%	-	$649.90
$60.00	60.00%	-	$600.00
$50.00	50.00%	-	$500.00
$40.00	40.00%	-	$400.00
$20.00	20.00%	-	$200.00
$0.00	0.00%	-	$0.00

* Represents the cash value of the hypothetical Physical Delivery Amount on the Valuation Date. We may elect to deliver either the Physical Delivery Amount or the Cash Delivery Amount. If we elect to deliver the Physical Delivery Amount, the actual value received and your total return on the notes on the Maturity Date will depend on the value of the Reference Asset on the Maturity Date.

U.S. Federal Tax Information

By purchasing the notes, each holder agrees (in the absence of a change in law, an administrative determination or a judicial ruling to the contrary) to treat each note as an investment unit consisting of a Debt Portion and a Put Option (as such terms are defined in the accompanying product supplement) for U.S. federal income tax purposes. In the opinion of our counsel, Mayer Brown LLP, it would generally be reasonable to treat the notes as an investment unit consisting of a Debt Portion and a Put Option in respect of the Reference Asset for U.S. federal income tax purposes. The following table sets forth the amount of stated interest on the notes and the portion that will be treated as an interest payment on the Debt Portion and as payment for the Put Option for U.S. federal income tax purposes.

Interest Rate per Annum	Treated as an Interest Payment on the Debt Portion	Treated as Payment for the Put Option
34.4000%	[*]%	[*]%

Please see the discussion in the accompanying product supplement under “Supplemental Tax Considerations—Supplemental U.S. Federal Income Tax Considerations — Notes Treated as Investment Units Consisting of a Debt Portion and a Put Option, as Pre-Paid Contingent Income-Bearing Derivative Contracts, or as Pre-Paid Derivative Contracts—Notes Treated as Investment Units Consisting of Debt Portions and Put Options,” which applies to the notes.

Supplemental Plan of Distribution (Conflicts of Interest)

BMOCM will purchase the notes from us at a purchase price reflecting the commission set forth on the cover hereof. BMOCM has informed us that, as part of its distribution of the notes, it will reoffer the notes to other dealers who will sell them. Each such dealer, or each additional dealer engaged by a dealer to whom BMOCM reoffers the notes, will receive a commission from BMOCM, which will not exceed the commission set forth on the cover page. We or one of our affiliates may also pay a referral fee to certain dealers in connection with the distribution of the notes.

Certain dealers who purchase the notes for sale to certain fee-based advisory accounts may forego some or all of their selling concessions, fees or commissions. The public offering price for investors purchasing the notes in these accounts may be less than 100% of the principal amount, as set forth on the cover page of this document. Investors that hold their notes in these accounts may be charged fees by the investment advisor or manager of that account based on the amount of assets held in those accounts, including the notes.

We will deliver the notes on a date that is greater than one business day following the pricing date. Under Rule 15c6-1 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), trades in the secondary market generally are required to settle in one business day, unless the parties to any such trade expressly agree otherwise. Accordingly, purchasers who wish to trade the notes more than one business day prior to the issue date will be required to specify alternative settlement arrangements to prevent a failed settlement.

We own, directly or indirectly, all of the outstanding equity securities of BMOCM, the agent for this offering. In accordance with FINRA Rule 5121, BMOCM may not make sales in this offering to any of its discretionary accounts without the prior written approval of the customer.

We reserve the right to withdraw, cancel or modify the offering of the notes and to reject orders in whole or in part. You may cancel any order for the notes prior to its acceptance.

You should not construe the offering of the notes as a recommendation of the merits of acquiring an investment linked to the Reference Asset or as to the suitability of an investment in the notes.

BMOCM may, but is not obligated to, make a market in the notes. BMOCM will determine any secondary market prices that it is prepared to offer in its sole discretion.

We may use the final pricing supplement relating to the notes in the initial sale of the notes. In addition, BMOCM or another of our affiliates may use the final pricing supplement in market-making transactions in any notes after their initial sale. Unless BMOCM or we inform you otherwise in the confirmation of sale, the final pricing supplement is being used by BMOCM in a market-making transaction.

For a period of approximately one month following issuance of the notes, the price, if any, at which we or our affiliates would be willing to buy the notes from investors, and the value that BMOCM may also publish for the notes through one or more financial information vendors and which could be indicated for the notes on any brokerage account statements, will reflect a temporary upward adjustment from our estimated value of the notes that would otherwise be determined and applicable at that time. This temporary upward adjustment represents a portion of (a) the hedging profit that we or our affiliates expect to realize over the term of the notes and (b) any underwriting discount and the selling concessions paid in connection with this offering. The amount of this temporary upward adjustment will decline to zero on a straight-line basis over the one-month period.

The notes and the related offer to purchase notes and sale of notes under the terms and conditions provided herein do not constitute a public offering in any non-U.S. jurisdiction, and are being made available only to individually identified investors pursuant to a private offering as permitted in the relevant jurisdiction. The notes are not, and will not be, registered with any securities exchange or registry located outside of the United States and have not been registered with any non-U.S. securities or banking regulatory authority. The contents of this document have not been reviewed or approved by any non-U.S. securities or banking regulatory authority. Any person who wishes to acquire the notes from outside the United States should seek the advice or legal counsel as to the relevant requirements to acquire these notes.

British Virgin Islands. The notes have not been, and will not be, registered under the laws and regulations of the British Virgin Islands, nor has any regulatory authority in the British Virgin Islands passed comment upon or approved the accuracy or adequacy of this document. This pricing supplement and the related documents shall not constitute an offer, invitation or solicitation to any member of the public in the British Virgin Islands for the purposes of the Securities and Investment Business Act, 2010, of the British Virgin Islands.

Cayman Islands. Pursuant to the Companies Law (as amended) of the Cayman Islands, no invitation may be made to the public in the Cayman Islands to subscribe for the notes by or on behalf of the issuer unless at the time of such invitation the issuer is listed on the Cayman Islands Stock Exchange. The issuer is not presently listed on the Cayman Islands Stock Exchange and, accordingly, no invitation to the public in the Cayman Islands is to be made by the issuer (or by any dealer on its behalf). No such invitation is made to the public in the Cayman Islands hereby.

Dominican Republic. Nothing in this pricing supplement constitutes an offer of securities for sale in the Dominican Republic. The notes have not been, and will not be, registered with the Superintendence of Securities Market of the Dominican Republic (Superintendencia del Mercado de Valores), under Dominican Securities Market Law No. 249-17 (“Securities Law 249-17”), and the notes may not be offered or sold within the Dominican Republic or to, or for the account or benefit of, Dominican persons (as defined under Securities Law 249-17 and its regulations). Failure to comply with these directives may result in a violation of Securities Law 249-17 and its regulations.

Israel. This pricing supplement is intended solely for investors listed in the First Supplement of the Israeli Securities Law of 1968, as amended. A prospectus has not been prepared or filed, and will not be prepared or filed, in Israel relating to the notes offered hereunder. The notes cannot be resold in Israel other than to investors listed in the First Supplement of the Israeli Securities Law of 1968, as amended.

No action will be taken in Israel that would permit an offering of the notes or the distribution of any offering document or any other material to the public in Israel. In particular, no offering document or other material has been reviewed or approved by the Israel Securities Authority. Any material provided to an offeree in Israel may not be reproduced or used for any other purpose, nor be furnished to any other person other than those to whom copies have been provided directly by us or the selling agents.

Nothing in this pricing supplement or any other offering material relating to the notes, should be considered as the rendering of a recommendation or advice, including investment advice or investment marketing under the Law For Regulation of Investment Advice, Investment Marketing and Investment Portfolio Management, 1995, to purchase any note. The purchase of any note will be based on an investor’s own understanding, for the investor’s own benefit and for the investor’s own account and not with the aim or intention of distributing or offering to other parties. In purchasing the notes, each investor declares that it has the knowledge, expertise and experience in financial and business matters so as to be capable of evaluating the risks and merits of an investment in the notes, without relying on any of the materials provided.

Mexico. The notes have not been registered with the National Registry of Securities maintained by the Mexican National Banking and Securities Commission and may not be offered or sold publicly in Mexico. This pricing supplement and the related documents may not be publicly distributed in Mexico. The notes may only be offered in a private offering pursuant to Article 8 of the Securities Market Law.

Switzerland. This pricing supplement is not intended to constitute an offer or solicitation to purchase or invest in any notes. Neither this pricing supplement nor any other offering or marketing material relating to the notes constitutes a prospectus compliant with the requirements of articles 35 et seq. of the Swiss Financial Services Act ("FinSA") for a public offering of the notes in Switzerland and no such prospectus has been or will be prepared for or in connection with the offering of the notes in Switzerland.

Neither this pricing supplement nor any other offering or marketing material relating to the notes has been or will be filed with or approved by a Swiss review body (Prüfstelle). No application has been or is intended to be made to admit the notes to trading on any trading venue (SIX Swiss Exchange or on any other exchange or any multilateral trading facility) in Switzerland. Neither this pricing supplement nor any other offering or marketing material relating to the notes may be publicly distributed or otherwise made publicly available in Switzerland.

The notes may not be publicly offered, directly or indirectly, in Switzerland within the meaning of FinSA except (i) in any circumstances falling within the exemptions to prepare a prospectus listed in article 36 para. 1 FinSA or (ii) where such offer does not qualify as a public offer in Switzerland, provided always that no offer of notes shall require the Issuer or any offeror to publish a prospectus pursuant to article 35 FinSA in respect to such offer and that such offer shall comply with the additional restrictions set out below (if applicable). The Issuer has not authorised and does not authorise any offer of notes which would require the Issuer or any offeror to publish a prospectus pursuant to article 35 FinSA in respect of such offer. For purposes of this provision "public offer" shall have the meaning as such term is understood pursuant to article 3 lit. g and h FinSA and the Swiss Financial Services Ordinance ("FinSO").

The notes do not constitute participations in a collective investment scheme within the meaning of the Swiss Collective Investment Schemes Act. They are not subject to the approval of, or supervision by, the Swiss Financial Market Supervisory Authority ("FINMA"), and investors in the notes will not benefit from protection under CISA or supervision by FINMA.

Prohibition of Offer to Private Clients in Switzerland - No Key Information Document pursuant to article 58 FinSA (Basisinformationsblatt für Finanzinstrumente) or equivalent document under foreign law pursuant to article 59 para. 2 FinSA has been or will be prepared in relation to the notes. Therefore, the following additional restriction applies: Notes qualifying as "debt securities with a derivative character" pursuant to article 86 para. 2 FinSO may not be offered within the meaning of article 58 para. 1 FinSA, and neither this pricing supplement nor any other offering or marketing material relating to such notes may be made available, to any retail client (Privatkunde) within the meaning of FinSA in Switzerland.

The notes may also be sold in the following jurisdictions, provided, in each case, any sales are made in accordance with all applicable laws in such jurisdiction:

Barbados

Bermuda

Additional Information Relating to the Estimated Initial Value of the Notes

Our estimated initial value of the notes on the date hereof, and that will be set forth on the cover page of the final pricing supplement relating to the notes, equals the sum of the values of the following hypothetical components:

a fixed-income debt component with the same tenor as the notes, valued using our internal funding rate for structured notes; and

one or more derivative transactions relating to the economic terms of the notes.

The internal funding rate used in the determination of the initial estimated value generally represents a discount from the credit spreads for our conventional fixed-rate debt. The value of these derivative transactions is derived from our internal pricing models. These models are based on factors such as the traded market prices of comparable derivative instruments and on other inputs, which include volatility, dividend rates, interest rates and other factors. As a result, the estimated initial value of the notes on the Pricing Date will be determined based on the market conditions on the Pricing Date.

The Reference Asset

We have derived the following information from publicly available documents. We have not independently verified the accuracy or completeness of the following information. We are not affiliated with the Reference Asset Issuer and the Reference Asset Issuer will have no obligations with respect to the notes. This document relates only to the notes and does not relate to the shares of the Reference Asset. Neither we nor any of our affiliates participates in the preparation of the publicly available documents described below. Neither we nor any of our affiliates has made any due diligence inquiry with respect to the Reference Asset in connection with the offering of the notes. There can be no 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 below and that would affect the trading price of the shares of the Reference Asset, have been or will be publicly disclosed. Subsequent disclosure of any events or the disclosure of or failure to disclose material future events concerning the Reference Asset could affect the price of the shares of the Reference Asset on any trading day during the Monitoring Period and on the Valuation Date, and therefore could affect the payments on the notes.

The selection of the Reference Asset is not a recommendation to buy or sell the shares of the Reference Asset. Neither we nor any of our affiliates make any representation to you as to the performance of the shares of the Reference Asset. Information provided to or filed with the SEC under the Exchange Act and the Investment Company Act of 1940 relating to the Reference Asset may be obtained through the SEC’s website at http://www.sec.gov.

We encourage you to review recent levels of the Reference Asset prior to making an investment decision with respect to the notes.

Abivax SA is an biotechnology company. Information filed by the company with the SEC under the Exchange Act can be located by reference to its SEC file number: 001-41842, or its CIK Code: 0001956827. Its American depositary receipts are listed on the Nasdaq Global Select Market under the ticker symbol “ABVX.”

SEC Form FWP filed by Bank Of Montreal