Mercantile Bancorp, Inc. Watch

from S-1/A 30 pages Warrant Agreement Dated as of , 2010 Between Mercantile Bancorp, Inc. and Illinois Stock Transfer Company as Warrant Agent Warrants for Common Stock

from S-1/A 2 pages Mercantile Bancorp, Inc. Incorporated Under the Laws of the State of Delaware Subscription Rights Certificate Evidencing Subscription Rights to Purchase Units Consisting of One Share of Common Stock and a Warrant to Purchase One Share of Common Stock of Mercantile Bancorp, Inc. Subscription Price: $[•] Per Unit the Subscription Rights Will Expire if Not Exercised on or Before 5:00 P.M., Eastern Daylight Savings Time, on October [•], 2010, Unless Extended by the Company

from 10-12G 1 page Amendment to Shareholder Rights Agreement

from 10-12G ~50 pages Shareholder Rights Agreement Between Mercantile Bancorp, Inc. and Mercantile Trust & Savings Bank as Rights Agent July 9, 1999