SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the
Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) January 12, 2004

FIRST SECURITYFED FINANCIAL, INC.

(Exact name of Registrant as specified in its Charter)

SECURITIES AND EXCHANGE COMMISSION

Delaware	0-23063	36-4177515
(State or other jurisdiction of incorporation)	(Commission File No.)	(IRS Employer Identification No.)

Washington, D.C. 20549

936 North Western Avenue, Chicago, Illinois	60622
(Address of principal executive offices)	(Zip Code)

Registrant's telephone number, including area code: (773) 772-4500
N/A

(Former name or former address, if changed since last report)

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~~FORM~~Item ~~8-K~~5. Other Events and Regulation FD Disclosure

~~Current~~ On January 12, 2004, MB Financial, Inc. ("MB Financial") and First SecurityFed Financial, Inc. ("First ~~Report~~SecurityFed") ~~Pursuant~~announced their agreement to ~~Section 13~~merge, orpursuant 15to the Agreement and Plan of Merger, dated as of January 9, 2004 (dthe "Agreement"), ofbetween MB Financial and First SecurityFed. Pursuant to the Agreement, First SecurityFed ~~The~~will ~~Securities~~be ~~Exchange~~merged ~~Act~~with ofand ~~1934~~into MB Financial, with MB Financial as the surviving corporation.

~~Date~~ Subject to the allocation provisions of ~~Report~~the Agreement, First SecurityFed stockholders will have the right to elect ~~(Date~~to receive for each share of ~~earliest~~First ~~event~~SecurityFed ~~reported): October 28~~common stock held, ~~2003~~either $35.25 in cash or a number of shares of MB Financial common stock equal to the quotient obtained by dividing $35.25 by the average closing price of MB Financial common stock over the ten-trading day period ending on the second trading day prior to the effective date of the transaction. The transaction is subject to restructuring as an all-cash transaction at $35.25 per share if the aggregate value of the MB Financial common stock to be issued is less than 40% of the value of the aggregate transaction consideration and MB Financial elects not to increase the number of shares issuable in the transaction. Subject to any such increase by MB Financial and/or any increase for First SecurityFed stock options exercised prior to the effective date, the total number of shares of common stock to be issued by MB Financial in the cash and stock transaction has been fixed at 1,996,849.

~~FIRST SECURITYFED~~ Consummation ~~FINANCIAL~~of the transaction is subject to certain conditions, ~~INC~~including approval of the transaction by First SecurityFed stockholders and bank regulatory authorities.

~~(Exact~~ Copies ~~name~~ of ~~registrant~~ the Agreement and the joint press release announcing the transaction are included as ~~specified~~Exhibits in2 ~~its~~and 99 ~~charter)~~to this report and are incorporated into this Item 5 by reference.

DELAWARE	0-23063	36-4177515
(State or other jurisdiction of incorporation or organization)	(Commission File Number)	(I.R.S. Employer Identification No.)
936 North Western Avenue, Chicago, Illinois 60622
(Address of principal executive offices) (Zip Code)
Registrant’s telephone number, including area code (773) 772-4500

Item 7. Financial Statements and Exhibits

Item 12. Results of Operations and Financial Condition.

(c)	Exhibits
	2	Agreement and Plan of Merger, dated as of January 9, 2004, by and among MB Financial, Inc. and First SecurityFed Financial, Inc.
	99	Joint Press Release dated January 12, 2004

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~~On October 28, 2003, we issued the press release attached as Exhibit 99.1 hereto and incorporated herein by reference.~~SIGNATURES

~~The~~ Pursuant ~~information~~to ~~in this Report is being furnished and shall not be deemed “filed” for~~ the ~~purposes~~requirements of ~~Section 18~~ of the Securities Exchange Act of 1934, ~~as amended, or otherwise subject to~~ the ~~liabilities~~Registrant ofhas ~~that~~duly ~~Section.~~caused ~~The information in~~ this Report to ~~shall~~be ~~not~~signed beon ~~deemed~~its ~~incorporated~~behalf by ~~reference into any filing under~~ the ~~Securities~~ ~~Act~~undersigned ofthereunto ~~1933,~~duly ~~as amended, except as shall be expressly set forth by specific reference in such filing~~authorized.

		FIRST SECURITYFED FINANCIAL, INC.
Date: January 13, 2004	By:	/s/ Julian E. Kulas Julian E. Kulas, President and Chief Executive Officer

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~~SIGNATURE~~EXHIBIT INDEX

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 hereunto duly authorized.

Exhibit No.	Description
2	Agreement and Plan of Merger, dated as of January 9, 2004, by and among MB Financial, Inc. and First SecurityFed Financial, Inc.
99	Joint Press Release dated January 12, 2004

4END

	FIRST SECURITYFED FINANCIAL, INC.
	By:	/s/ Julian E. Kulas
		Julian E. Kulas
		President and Chief Executive Officer
Date: October 31, 2003

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EXHIBIT INDEX

Exhibit Number		Description
99.1		Press Release issued October 28, 2003 furnished solely pursuant to Item 12 of Form 8-K.

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