X0303 4 2010-01-29 false 0001284812 COHEN & STEERS INC CNS 0001299637 Harvey Joseph M 280 PARK AVENUE, 10TH FLOOR NEW YORK NY 10017 false true false false President Common Stock 2010-01-29 4 A false 52133 0 A 1154886 D Includes 1,648 restricted stock units (RSUs) mandatorily deferred by CNS from the reporting person?s annual incentive performance bonus, plus 412 RSUs granted to the reporting person as a company match on such deferral. Dividends paid on CNS common stock are reflected in additional RSUs on such deferred and matching RSUs. The deferred and matching RSUs vest ratably over four years, and the dividend RSUs vest on the fourth anniversary of the grant. Also includes 50,073 RSUs that generally vest over five years. Salvatore Rappa, Attorney-in-Fact for Joseph Harvey 2010-02-02