Sec Form 4 Filing - Buller Steven E @ BlackRock Inc. - 2007-01-25

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Buller Steven E 2. Issuer Name and Ticker or Trading Symbol BlackRock Inc. [ BLK] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chief Financial Officer (Last) (First) (Middle) BLACKROCK, INC., 40 EAST 52ND STREET 3. Date of Earliest Transaction (MM/DD/YY) 01/25/2007 (Street) NEW YORK, NY10022 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Shares of Common Stock (par value $0.01 per share) 01/25/2007 A 1,957 ( 1 ) A $ 0 36,689 ( 2 ) ( 3 ) D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Buller Steven E BLACKROCK, INC. 40 EAST 52ND STREET NEW YORK, NY10022 Chief Financial Officer Signatures /s/ Daniel R. Waltcher as Attorney-in-Fact for Steven E. Buller 01/29/2007 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Restricted Stock Units granted under the 1999 Stock Award and Incentive Plan as part of the reporting person's bonus approved by the Management Development and Compensation Committee of the Board of Directors for the 2006 fiscal year under the Amended and Restated 1999 Annual Incentive Performance Plan. The number of Restricted Stock Units was determined by dividing the approved dollar value of the equity award, by $170.90, which was the average of the high and low price per share of Common Stock on January 25, 2007. This formula was approved by the Management Development and Compensation Committee on January 16, 2007. Each Restricted Stock Unit is payable solely by delivery of an equal number of shares of Common Stock and vests in equal installments on 1/31/08, 1/31/09 and 1/31/10. ( 2 )Includes 57 shares of Common Stock acquired since the reporting person's last report and held under the BlackRock, Inc. Retirement Savings Plan (the "RSP"), the successor to The PNC Financial Services Group, Inc. Incentive Savings Plan. The information on this report with respect to the RSP is based on a plan statement dated as of December 29, 2006. ( 3 )Includes 33,852 shares of restricted Common Stock granted under the BlackRock, Inc. 1999 Stock Award and Incentive Plan, vesting 56% on 10/1/08, 22% on 10/1/09, and 22% on 10/1/10. Also, includes 823 Restricted Stock Units granted under the BlackRock, Inc. 1999 Stock Award and Incentive Plan, vesting in three equal installments on 1/31/07, 1/31/08 and 1/31/09. Each Restricted Stock Unit is payable solely by delivery of an equal number of shares of Common Stock.

Remarks: On September 29, 2006, the corporation then known as BlackRock, Inc. ("Old BlackRock") merged with its wholly-owned subsidiary, BlackRock Merger Sub, Inc., with Old BlackRock surviving the merger. As a result of that merger, New BlackRock, Inc. (now named BlackRock, Inc.) became the successor and holding company of Old BlackRock. The merger did not alter the proportionate ownership of the capital stock. Each share of Class A Common Stock and Class B Common Stock of Old BlackRock issued and outstanding prior to the merger was converted into one share of Common Stock.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

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