 NEW YORK, June 2, 2021 PRNewswire -- WeissLaw LLP is investigating possible breaches of fiduciary duty and other violations of law by the board of directors of First Midwest Bancorp, Inc. First Midwest or the Company NASDAQ: FMBI in connection with the proposed acquisition of the Company by Old National Bancorp Old National NASDAQ: ONB. Under the terms of the merger agreement, First Midwest shareholders will receive 1.1336 shares of Old National common stock for each First Midwest share that they own. 