First Midwest Bancorp (FMBI) issued its Series A 7% preferred shares on May 13th. The preferred shares were issued just a couple of days after the company filed a mixed shelf offering with the intent to raise an unspecified amount of capital.The mixed shelf offering stated that the company may use different combinations of securities including, but not limited to, common shares, preferred shares, warrants, and debt securities to raise capital. Before deciding on investing in a new preferred issuance, investors should understand the nature of the specific preferred security and