FORM 6-K

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Report of Foreign Private Issuer

Pursuant to Rule 13a-16 or 15d-16
of the Securities Exchange Act of 1934

For the month of: May 2007	Commission File Number: 001-133354
BANK OF MONTREAL
(Name of Registrant)
100 King Street West 1 First Canadian Place Toronto, Ontario Canada, M5X 1A1	129 rue Saint-Jacques Montreal, Quebec Canada, H2Y 1L6
(Executive Offices)	(Head Office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:

Form 20-F o     Form 40-F þ

Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the SEC pursuant to Rule 12g3-2(b) under the Securities Exchange act of 1934:

Yes o     No þ

If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b):      N/A     

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

BANK OF MONTREAL
By:	/s/ Ronald B. Sirkis
	Name:	Ronald B. Sirkis
	Title:	Executive Vice-President, General Counsel and Taxation

	By:	/s/ Sharon Sandall
Date: May 25, 2007		Name:	Sharon Sandall
		Title:	Senior Assistant Secretary

EXHIBIT INDEX

Exhibit	Description of Exhibit
99.1	Amended and Restated Material Change Report

(Filed in form required by Canadian National Instrument 51-102 — Continuous Disclosure Obligations and Form 51-102F3 Material Change Report)