BANK OF MONTREAL /CAN/ (BMO) SEC Filings, May 20-21, 2026

Bank of Montreal priced US$1,775,000 of Senior Medium-Term Notes, Series K — Capped Buffer Enhanced Return Notes linked to the S&P MidCap 400® Index.

The notes pay up to a Maximum Redemption Amount of $1,158.00 per $1,000 (a 15.80% maximum return) and provide 200.00% upside leverage on appreciation of the index, subject to that cap. The notes include a 10.00% buffer: if the index declines by no more than 10.00% at the valuation date you receive the $1,000 principal back; declines beyond the buffer cause a pro rata loss, up to a 90.00% principal loss at maturity. All payments are subject to Bank of Montreal credit risk.

Bank of Montreal priced a primary offering of Senior Medium-Term Notes, Series K. The issuance totals $1,500,000 in $1,000 denominations, with an interest rate of 4.60% per annum, issue date May 22, 2026 and stated maturity May 22, 2029. The Notes are redeemable at issuer option on semi-annual Optional Redemption Dates and are bail-inable under the Canada Deposit Insurance Corporation Act, permitting conversion into common shares under specified statutory powers.

The Notes pay semi-annual interest, are unsecured obligations of Bank of Montreal, will not be listed on an exchange, and were issued at an original issue price of $1,000.00 per Note (total $1,500,000.00), with underwriting discount per Note of $3.80 and proceeds to BMO per Note of $996.20. Optional Redemption may occur semi-annually beginning May 22, 2027. The pricing supplement stresses credit risk, limited secondary market expectations, and Canadian bail-in conversion risk.

Bank of Montreal is offering Market Linked Securities — auto-callable, fixed-coupon, equity-linked notes tied to DraftKings Inc. common stock with a 13.00% coupon paid monthly. Each security has a $1,000 face amount, an estimated initial value of $970.83 and a stated maturity date of May 22, 2028. The notes may be automatically called on monthly call dates beginning November 2026 if the Underlier’s closing value is at or above the starting value; if not called, repayment at maturity depends on the ending value versus a 70% threshold and may result in share delivery rather than full cash repayment.

The securities are unsecured obligations of Bank of Montreal and carry credit risk of the issuer, no FDIC or CDIC insurance, limited secondary-market liquidity, and uncertain U.S. federal income tax treatment. The agent discount is $23.25 per security and total original offering proceeds shown equal $976,750 for the illustrated tranche.

Bank of Montreal priced principal-at-risk notes linked to the MSCI EAFE Index. The notes trade date is May 19, 2026, original issue date May 22, 2026 and stated maturity date February 18, 2028 (subject to postponement). For each $1,000 principal amount, repayment at maturity depends on the index performance versus the initial level of 3,027.11. Investors participate at an upside participation rate of 160% subject to a cap that limits the maximum cash payment to $1,267.68 per note. A buffer protects against declines up to 12.50% (buffer level = 87.50% of the initial level); if the final level is below the buffer, losses accrue at ~1.1429% of principal per 1% decline below the buffer. The issuer received gross proceeds of $3,564,000.00. The initial estimated value per note was $991.14, below the original issue price. Payments are unsecured obligations of Bank of Montreal and subject to its credit risk.

Bank of Montreal offers US$3,025,000 of Senior Medium‑Term Notes, Series K — Callable Barrier Notes with Contingent Coupons linked to the least performing of the S&P 500®, NASDAQ‑100® and Russell 2000®; the notes mature on November 30, 2027 and have a Valuation Date of November 24, 2027.

The notes pay a contingent coupon of 0.8542% per month (approximately 10.25% per annum) when each Reference Asset closes at or above its Coupon Barrier Level on an Observation Date; each contingent coupon equals $8.542 per $1,000 if payable. The issuer may call the notes beginning on June 25, 2026. At maturity investors receive principal unless a Trigger Event occurred and the Final Level of the least performing Reference Asset is below its Initial Level, in which case the maturity payment equals $1,000 × Percentage Change of the least performing Reference Asset (which may be less than principal).

Bank of Montreal (BMO) priced US$1,580,000 of Senior Medium-Term Notes, Series K — Enhanced Return Notes linked to the shares of the SPDR® Gold Trust (GLD). The notes mature on May 21, 2029 and pay at maturity: if GLD's Final Level ≥ Initial Level, investors receive $1,000 plus 100.30% participation in upside; if GLD declines, investors lose 1% of principal for each 1% decline (full principal loss possible). The notes were sold at 100% of principal in minimum denominations of $1,000, carry no interest, will not be listed, are unsecured obligations of BMO and are subject to BMO credit risk. The initial estimated value was $986.60 per $1,000.

Bank of Montreal priced US$255,000 in Senior Medium-Term Notes, Series K — Callable Barrier Notes linked to the Least Performing of the Russell 2000® Index and the Nasdaq-100 Technology Sector Index. The Pricing Date was May 18, 2026, settlement is May 21, 2026, and maturity is April 21, 2028. The notes pay contingent monthly coupons of 0.8167% per month (approximately 9.80% per annum) when each reference asset closes at or above its coupon barrier on observation dates. If a Trigger Event occurs (final level of any reference asset below its Trigger Level on the Valuation Date April 18, 2028), the maturity payment equals $1,000 plus the Percentage Change of the Least Performing Reference Asset and may be less than principal. The cover states an estimated initial value of $964.04 per $1,000 on the Pricing Date. The public offering price was 100% ($1,000 per $1,000), with Agent’s Commission of 1.875% and proceeds to the issuer of 98.125%.

Bank of Montreal prices US$500,000 Senior Medium-Term Notes, Series K — Callable Buffer Notes due May 21, 2030.

The notes pay monthly contingent coupons of 1.1167% per month (approximately 13.40% per annum) if each Reference Asset on an Observation Date is at or above its Coupon Barrier Level. The notes return principal at maturity unless a Trigger Event occurs (Final Level below the Buffer Percentage of 30.00%), in which case holders receive $1,000 + $1,000×(Percentage Change of the Least Performing Reference Asset + 30.00%).

Bank of Montreal (BMO) priced $2,896,000 aggregate principal of Senior Medium-Term Notes, Series K — Autocallable Barrier Notes with Contingent Coupons linked to the common stock of Netflix, Inc. (NFLX). The Pricing Date is May 18, 2026, Settlement May 21, 2026, Valuation Date June 15, 2027, and Maturity Date June 21, 2027.

The notes pay a Contingent Coupon of 0.9317% per month (approximately 11.18% per annum) if the Reference Asset on each Observation Date is at or above the Coupon Barrier Level of $61.86 (69.00% of the Initial Level). Beginning on Nov 18, 2026, the notes are subject to automatic redemption if the closing level on an Observation Date is at or above the Call Level (100% of the Initial Level). If a Trigger Event occurs (Final Level below $61.86 on the Valuation Date), holders at maturity may receive a Physical Delivery Amount of shares or, at the issuer’s election, a Cash Delivery Amount calculated using the Final Level. The estimated initial value was $969.11 per $1,000.