X0303 4 2007-12-31 0 0000888693 ISCO INTERNATIONAL INC ISO 0001169746 CALHOUN GEORGE M C/O ISCO INTERNATIONAL, INC. 1001 CAMBRIDGE DRIVE ELK GROVE VILLAGE IL 60007 1 0 0 0 Common Stock, par value $0.001 2007-12-31 4 D 0 20833 0 D 144417 D Common Stock, par value $0.001 2008-01-01 4 A 0 52292 0 A 196709 D Restricted shares were forfeited because the issuer's vesting conditions were not satisfied. Restricted shares of common stock granted to Mr. Calhoun under the issuer's non-employee director compensation policy, and pursuant to the terms of its 2003 Equity Incentive Plan. No purchase price was paid for this grant of restricted stock. Exhibit List Exhibit 24 - Power of Attorney Rachel Williams Mantz, Attorney-in-fact for George M. Calhoun 2008-11-10