BANK OF MONTREAL /CAN/ (BMO) SEC Filings, May 27, 2026

Bank of Montreal priced US$500,000 Senior Medium-Term Notes, Series K — Autocallable Barrier Notes with Memory Coupons linked to Lemonade, Inc. due May 28, 2027. The notes pay a 2.0083% monthly contingent coupon (approximately 24.10% per annum) if the reference stock meets monthly coupon barrier tests. The notes are automatic‑callable beginning December 22, 2026 if the reference stock closes at or above the Call Level. At maturity, if the Final Level is below the Trigger Level ($28.53), investors receive a reduced cash amount tied to the percentage change in the reference stock; physical delivery of shares is not available. The initial estimated value on the pricing date was $960.59 per $1,000 principal.

Bank of Montreal priced US$608,000 Senior Medium-Term Notes, Series K — Autocallable Barrier Notes linked to the least performing of AMD, Broadcom and Microsoft. The notes pay a contingent coupon of 2.0208% per month (~24.25% per annum) when each reference stock is at or above its 60% Coupon Barrier on observation dates and are automatically redeemable if, on an observation date, each reference asset is at or above its Call Level (100% of initial levels). If not called, maturity payment depends on the least performing reference asset versus its Initial Level, with a Trigger Level set at 50% of Initial Level for each reference asset; investors receive cash only and the estimated initial value on the pricing date was $944.29 per $1,000 principal. The notes settle on May 28, 2026 and mature on May 29, 2029. Terms include anti-dilution adjustments, market-disruption provisions and tax treatment discussed in the product supplement.

Bank of Montreal priced US$6,199,000 of Senior Medium-Term Notes, Series K — Autocallable Barrier Notes with Memory Coupons linked to the least performing of the S&P 500®, NASDAQ-100® and Russell 2000®. The notes price on May 22, 2026, settle May 28, 2026 and mature August 31, 2027. They pay monthly contingent coupons of 1.0417% per month when all reference assets close at or above their coupon barriers; an automatic redemption can occur if all reference assets close above their call levels on an observation date. At maturity, principal repayment depends on the performance of the least performing reference asset and may be less than principal if a trigger event occurs. The estimated initial value was $988.23 per $1,000 on the pricing date.

Bank of Montreal issues US$1,000,000 Senior Medium-Term Notes, Series K — Autocallable Barrier Notes linked to the MerQube US Large-Cap Vol Advantage Index. The notes pay a contingent monthly coupon of 1.3333% (approximately 16.00% per annum) when the Reference Asset meets the Coupon Barrier and carry an automatic redemption feature beginning on November 23, 2026. The notes mature on May 25, 2029 with a principal repayment at maturity that may be reduced if a Trigger Event occurs (Final Level below the Trigger Level of 3,305.77, which is 75.00% of the Initial Level). The pricing supplement states an estimated initial value of $948.54 per $1,000 principal and a public offering price of 100% (agent’s commission 0.90%, proceeds to Bank of Montreal $991,000). Investors should read the listed risk sections and related prospectus materials.

Bank of Montreal priced US$2,977,000 of Senior Medium-Term Notes, Series K: Autocallable Barrier Enhanced Return Notes due May 29, 2029, linked to the least performing of the Dow Jones Industrial Average®, NASDAQ-100® and Russell 2000®. The notes offer 150.00% upside leverage to positive performance of the least performing reference asset if not auto‑redeemed. Beginning May 28, 2027, automatic redemption will occur on an Observation Date if each Reference Asset closes above its Call Level, paying principal plus a Call Amount (examples: $174 and $348 per $1,000). If not called, maturity payoffs depend on the Least Performing Reference Asset versus its Initial Level and a Barrier Level at 70.00% of Initial Level; declines below the Barrier produce linear principal loss.

Bank of Montreal priced a US$3,832,000 offering of Senior Medium-Term Notes, Series K — Autocallable Barrier Notes with Memory Coupons linked to the MerQube US Large-Cap Vol Advantage Index (MQUSLVA).

The notes were priced on May 22, 2026, settle on May 28, 2026 and mature on May 25, 2029. They pay contingent monthly coupons of 1.2167% per month (approximately 14.60% per annum) when the reference asset closes at or above the coupon barrier. The coupon barrier and trigger level are 3,085.38 (70.00% of the Initial Level). The notes are autocallable beginning on the November 23, 2026 observation date if the Reference Asset is above the Call Level (100.00% of the Initial Level). The estimated initial value on the pricing date was $947.94 per $1,000 principal amount. Terms include a Memory Coupon Feature, potential principal loss at maturity if a Trigger Event occurs, and customary distribution conflicts and limitations described in the supplement.

Bank of Montreal (BMO) priced US$570,000 of Senior Medium-Term Notes, Series K — Autocallable Barrier Notes with Memory Coupons due May 25, 2029 — linked to the MerQube US Large-Cap Vol Advantage Index (MQUSLVA). The notes pay monthly contingent coupons at 0.9917% per month (≈11.90% per annum) when the Reference Asset closes at or above a Coupon Barrier of 2,644.61 (60.00% of the Initial Level). The Initial Level is 4,407.69. The notes are callable beginning on November 23, 2026 if the Reference Asset closes above the Call Level (100% of Initial Level). At maturity investors receive principal unless a Trigger Event occurs (Final Level < Trigger Level of 2,644.61), in which case the payment equals $1,000 multiplied by the Percentage Change and may be less than principal. The estimated initial value on the Pricing Date was $947.22 per $1,000 principal. Terms include memory coupons, monthly observation dates, and index-specific adjustments and risks described in referenced prospectus materials.

Bank of Montreal prices a preliminary offering of senior medium-term, equity-linked, auto-callable notes due June 1, 2029, linked to the lowest performing common stock of Blackstone Inc. and NVIDIA Corporation. The notes pay monthly contingent coupons (rate at least 20.00% per annum) with a memory feature, may be automatically called if the lowest performing underlier meets its starting value on scheduled calculation days, and expose holders to downside principal risk: if the lowest performing underlier finishes below its downside threshold, holders may receive shares at maturity instead of cash. The pricing timetable shows a pricing date: May 29, 2026 and issue date: June 3, 2026, with an original offering price of $1,000 per security and an estimated initial value of $967.90 (not less than $920.00). Purchases are unsecured obligations of Bank of Montreal and subject to its credit risk.

Bank of Montreal priced a series of equity-linked senior notes (series K) that are auto-callable and linked to the lowest performing share of AAPL, AMD and JPM, maturing May 25, 2029. The original offering price is $1,000 per security (face amount) and the issuer's estimated initial value was $942.59 per security. The securities pay a contingent coupon of 23.30% per annum (monthly) only when the lowest performing underlier on each calculation day is at or above its 60% coupon threshold; unpaid coupons carry forward without interest and may be paid later if threshold conditions are met. If any scheduled monthly calculation day from November 2026 through April 2029 shows the lowest performing underlier at or above its starting value, the notes will be automatically called and redeemed at face amount plus accrued contingent coupon(s). At final maturity, if not called, holders receive $1,000 if the lowest performing underlier is at or above its 60% downside threshold; otherwise the maturity payment equals $1,000 × performance factor of the lowest performing underlier (full downside exposure).