X0306 4 2016-09-02 0001362004 ICF International, Inc. ICFI 0001376429 Kesavan Sudhakar 9300 LEE HIGHWAY FAIRFAX VA 22031 1 1 Chairman and CEO Common Stock 2016-09-02 4 S 0 9633 43 D 142731 D Common Stock 152364 D The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 11, 2015. /s/ James J. Maiwurm, Attorney-in-fact 2016-09-02