X0202 4 2005-08-01 0 0001060021 BLACKROCK INC /NY BLK 0001059227 SCHLOSSTEIN RALPH C/O BLACKROCK FINANCIAL MANAGEMENT, INC. 40 EAST 52ND STREET NEW YORK NY 10022 1 1 0 0 President Shares of Class A Common Stock (par value $0.01 per share) 2005-08-01 4 C 0 50000 A 545817 D Class B Common Stock (par value $0.01 per share) 2005-08-01 4 C 0 50000 D 2002-12-31 Class A Common Stock 50000 423000.83 D The reporting person converted 50,000 shares of Class B Common Stock (See Table I) into 50,000 shares of Class A Common Stock on 8/1/05. One share of Class B Common Stock is convertible into one share of Class A Common Stock. Includes 2,559 shares of Class A Common Stock acquired by the reporting person under the BlackRock, Inc. Employee Stock Purchase Plan through July 31, 2005. Also includes 1,206 shares of Class A Common Stock acquired by the reporting person through July 31, 2005 under The PNC Financial Services Group, Inc. Incentive Savings Plan (the "ISP"). The information on this report with respect to the ISP is based on a plan statement as of July 31, 2005. The shares of Class B Common Stock can be converted at any time into shares of Class A Common Stock. The reporting person has direct ownership of 148,000.83 shares of Class B Common Stock and indirect ownership of 275,000 shares of Class B Common Stock through the Ralph L. Schlosstein 1998 Long-Term Trust U/A/D 2/2/98. Daniel R. Waltcher as Attorney-in-Fact for Ralph Schlosstein 2005-08-03