X0306 4 2013-01-31 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 2013-01-31 4 A false 53099 0 A 1288584 D Common Stock 2013-01-31 4 F false 20120 32.7 D 1268464 D Includes 18,552 restricted stock units (RSUs) mandatorily deferred by CNS from the reporting persons annual incentive performance bonus. Dividends paid on CNS common stock are reflected in additional RSUs on such deferred RSUs. The deferred RSUs vest ratably over four years, and the dividend RSUs vest on the fourth anniversary of the grant. Also includes 9,465 RSUs voluntarily deferred by the reporting person from his annual incentive performance bonus, plus 2,366 RSUs granted to him 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 RSUs are immediately vested (but delivered on the third anniversary of grant) and the matching and accrued dividend RSUs vest and are delivered on the third anniversary of the grant. Also includes 22,716 RSUs that generally vest over four years. Represents the withholding by Cohen & Steers of a sufficient number of shares of common stock to satisfy the reporting persons tax obligations upon the vesting and delivery of previously reported restricted stock units. Salvatore Rappa, Attorney-in-Fact 2013-02-01