To: All Persons or Entities who purchased MB Financial, Inc. (“MB Financial” or the “Company”) (NASDAQ: MBFI) stock prior to May 21, 2018. You are hereby notified that Levi & Korsinsky, LLP has commenced an investigation into the fairness of the MB Financial merger. MB Financial will be sold to Fifth Third Bancorp. Under the terms of the transaction, MB Financial shareholders will receive 1.45 shares of Fifth Third stock and $5.54 in cash for each share of MB Financial stock they own. Based on the closing price of Fifth Third on May 18, 2018, this represents a value of approximately $54.20 per share. To learn more about the MBFI merger and your rights, go to: http://www.zlk.com/mna/mb-financial-inc or contact Joseph E. Levi, Esq. either via email at jlevi@levikorsinsky.com or by telephone at (212) 363-7500, toll-free: (877) 363-5972. There is no cost or obligation to you.

The MB Financial investigation concerns whether the Board of MB Financial breached their fiduciary duties to stockholders by failing to adequately shop the Company before agreeing to enter into this transaction, and whether Fifth Third is underpaying for MB Financial shares, thus unlawfully harming MB Financial shareholders.

Levi & Korsinsky is a national firm with offices in New York, Connecticut, California, and Washington D.C. The firm’s attorneys have extensive expertise in prosecuting securities litigation involving financial fraud, representing investors throughout the nation in securities lawsuits and have recovered hundreds of millions of dollars for aggrieved shareholders. For more information, please feel free to contact any of the attorneys listed below. Attorney advertising. Prior results do not guarantee similar outcomes.