Exhibit 99.1

FOR IMMEDIATE RELEASE

BankFinancial Corporation to Host Conference Call and Webcast on May 8, 2012

Burr Ridge, Illinois – (May 4, 2012) BankFinancial Corporation (Nasdaq – BFIN) will review first quarter 2012 results in a conference call and webcast for stockholders and analysts on Tuesday, May 8, 2012 at 9:30 a.m. Chicago, Illinois Time.

The conference call may be accessed by calling (866) 804-6921 and using participant passcode 70957217. The conference call will be simultaneously webcast at www.bankfinancial.com, “Stockholder Information” page. For those persons unable to participate in the conference call, the webcast will be archived through 5:00 p.m. Chicago Time on May 22, 2012 on our website. Copies of BankFinancial Corporation’s First Quarter 2012 quarterly financial and statistical supplement and its Quarterly Report on Form 10-Q are scheduled to be available on our website, under the “Stockholder Information” section, on May 7, 2012.

BankFinancial Corporation is the holding company for BankFinancial, F.S.B., a full-service, community-oriented bank providing financial services to individuals, families and businesses through 20 full-service banking offices, located in Cook, DuPage, Lake and Will Counties, Illinois. At December 31, 2011, BankFinancial had total assets of $1.564 billion, total loans of $1.227 billion, total deposits of $1.333 billion and stockholders’ equity of $200 million. The company’s common stock trades on the Nasdaq Global Select Market under the symbol BFIN. Additional information may be found at the company’s web site, www.bankfinancial.com.