BANK OF MONTREAL /CAN/ (BMO) SEC Filings, May 29, 2026

Bank of Montreal priced US$1,482,000 Senior Medium-Term Notes, Series K — a structured note due June 30, 2027

The notes pay a 10.50% digital return if the Final Level of the least performing of the S&P 500® and Russell 2000® is greater than or equal to its Pricing Date level. If that least performing index falls below 70.00% of its Pricing Date level, investors lose 1% of principal for each 1% decline; losses may reach 100% of principal. The notes were priced on May 28, 2026 with an estimated initial value of $966.00 per $1,000 principal amount and will be unsecured obligations of Bank of Montreal.

Bank of Montreal (BMO) is offering US$1,917,000 principal amount of Senior Medium-Term Notes, Series K — autocallable barrier enhanced return notes due May 31, 2029 — linked to the least performing of the Dow Jones Industrial Average, the Russell 2000 and the S&P 500. If not auto‑redeemed, the notes provide 200.00% upside leverage on appreciation of the least performing reference asset but expose holders to full downside below a 70.00% Barrier (loss of 1% principal per 1% decline). Automatic early redemption can occur beginning June 01, 2027 on observation dates, delivering principal plus a Call Amount (examples: $100 or $200 per $1,000). Notes pay no interest, are unsecured obligations of the Bank and are subject to Bank of Montreal credit risk. Minimum denomination is $1,000. The issuer’s estimated initial value was $940.10 per $1,000 on the Pricing Date.

Bank of Montreal (BMO) priced US$4,311,000 of Senior Medium-Term Autocallable Barrier Notes linked to the S&P 500® Index due May 31, 2029. The notes pay no interest and may be automatically redeemed on June 1, 2027 if the index is above its Call Level, in which case each note pays a $75 Call Amount on the Call Settlement Date. If not called, payoff at maturity depends on the Final Level: full participation (1x) in positive returns above the Initial Level, return of principal if the Final Level stays at or above the 75.00% Barrier, and a linear loss of principal below the Barrier (100% loss possible).

Bank of Montreal priced US$2,220,000 of Senior Medium‑Term Notes, Series K — Capped Buffer Enhanced Return Notes linked to the S&P 500® Index, maturing November 30, 2027. The notes provide 150.00% upside exposure subject to a Maximum Redemption Amount of $1,100.00 per $1,000 (a 10.00% cap).

The structure returns principal at maturity if the index decline does not exceed the 20.00% buffer; declines beyond that expose holders to a pro rata loss (up to 80.00% of principal). Payments are unsecured obligations of the Bank and subject to Bank of Montreal credit risk.

Bank of Montreal (BMO) priced US$2,232,000 of Senior Medium-Term Notes, Series K — Capped Buffer Enhanced Return Notes due May 31, 2029. The notes provide 200.00% upside leverage on the least performing of the S&P 500® and NASDAQ-100®, subject to a Maximum Redemption Amount of $1,320.00 per $1,000. The notes return principal at maturity if the least performing reference asset does not fall more than 15.00% (the Buffer Level); declines beyond that result in a 1% loss of principal for each 1% decline, with up to 85.00% principal loss possible. Notes pay no interest, are unsecured obligations of BMO, are not exchange-listed, and are subject to BMO credit risk.

Bank of Montreal is offering Market Linked Securities—auto-callable senior medium-term notes due June 22, 2029 linked to the lowest performing common stock of Amazon.com, Inc., Alphabet Inc. (Class A) and Meta Platforms, Inc.. The original offering price is $1,000 per security; the issuer's initial estimated value on the preliminary pricing supplement is $967.90 per security (not less than $920.00 at pricing). The securities pay quarterly contingent coupon payments (the contingent coupon rate will be set on the pricing date and will be at least 18.20% per annum) only if the lowest performing Underlier meets coupon threshold tests. The notes are subject to an automatic call feature, full downside exposure to the lowest performing Underlier at maturity if that Underlier falls below a 70% downside threshold, and are unsecured obligations of Bank of Montreal; all payments depend on the issuer's creditworthiness.

Bank of Montreal (BMO) is offering Accelerated Return Notes® linked to the Global X Robotics & Artificial Intelligence ETF (ticker BOTZ), maturing in August 2027. Each unit has a $10 principal amount; the public offering price is $10.00 per unit and the underwriting discount is $0.175 per unit. The notes provide a leveraged payoff at a 300% participation rate up to a Capped Value (to be set on the pricing date, indicated here as between $11.80 and $12.20 per unit). The issuer’s initial estimated value is expected to be between $9.00 and $9.35 per unit. Payments at maturity depend on the Starting Value and Ending Value of the Underlying Fund, are unsecured, and are subject to BMO’s credit risk and the stated risks for robotics and AI-focused equities.

Bank of Montreal is offering non‑interest notes linked to the S&P 500® Index with a principal amount of $1,000 per note. The notes pay a threshold settlement amount if the final index level is >= 90.00% of the initial level; that amount is expected to be between $1,100.50 and $1,118.20. If the final index level is below 90.00%, investors lose approximately 1.1111% of principal for each 1% decline below the threshold. The determination date will be set on the trade date and is expected to fall within a 14 to 16 month range; the stated maturity is the second scheduled business day after that date. The notes are unsecured obligations of Bank of Montreal, not listed, designed to be held to maturity, and subject to the issuer’s credit risk. The issuer’s estimated initial value per note is expected to be $969.00–$999.00, which is less than the original issue price.

Bank of Montreal issues $2,000,000 Senior Medium‑Term Notes, Series K, fixed 5.35% due June 1, 2038. The Notes are $1,000 principal per note, trade date May 28, 2026, issue date June 1, 2026, and pay interest semi‑annually on June 1 and December 1 beginning December 1, 2026. The Notes are redeemable by Bank of Montreal in whole (but not in part) on semi‑annual Optional Redemption Dates beginning June 1, 2028 at 100% of principal plus accrued interest. The offering totals $2,000,000 at an original issue price of $1,000.00 per Note; underwriting discount is $10.00 per Note and proceeds to the Bank are $990.00 per Note.

The Notes are unsecured, not listed on any exchange, not insured by deposit insurance, and are bail‑inable under the Canada Deposit Insurance Corporation Act, permitting conversion into common shares under the CDIC Act. Holders are deemed to consent to conversion and related jurisdictional provisions as described.