Ownership Submission
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 OF SECURITIES

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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(Print or Type Responses)
1. Name and Address of Reporting Person *
ANDERSON KEITH
   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)
Vice Chairman
(Last)
(First)
(Middle)
BLACKROCK, INC., 40 EAST 52ND STREET		 3. Date of Earliest Transaction (Month/Day/Year)
02/20/2007
(Street)

NEW YORK, NY 10022		 4. If Amendment, Date Original Filed(Month/Day/Year)
 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 (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 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) 02/20/2007   M   24,900 A $ 37.36 183,997.41 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/20/2007   S   3,100 D $ 174 180,897.41 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/20/2007   S   500 D $ 174.08 180,397.41 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/20/2007   S   1,200 D $ 174.1 179,197.41 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/20/2007   S   500 D $ 174.11 178,697.41 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/20/2007   S   300 D $ 174.13 178,397.41 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/20/2007   S   1,700 D $ 174.15 176,697.41 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/20/2007   S   2,600 D $ 174.16 174,097.41 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/20/2007   S   900 D $ 174.17 173,197.41 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/20/2007   S   3,200 D $ 174.2 169,997.41 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/20/2007   S   200 D $ 174.21 169,797.41 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/20/2007   S   100 D $ 174.23 169,697.41 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/20/2007   S   100 D $ 174.24 169,597.41 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/20/2007   S   100 D $ 174.29 169,497.41 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/20/2007   S   300 D $ 174.3 169,197.41 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/20/2007   S   300 D $ 174.35 168,897.41 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/20/2007   S   300 D $ 174.4 168,597.41 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/20/2007   S   500 D $ 174.45 168,097.41 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/20/2007   S   100 D $ 174.46 167,997.41 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/20/2007   S   100 D $ 174.47 167,897.41 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/20/2007   S   100 D $ 174.49 167,797.41 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/20/2007   S   1,700 D $ 174.5 166,097.41 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/20/2007   S   100 D $ 174.53 165,997.41 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/20/2007   S   500 D $ 174.55 165,497.41 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/20/2007   S   700 D $ 174.57 164,797.41 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/20/2007   S   400 D $ 174.58 164,397.41 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/20/2007   S   400 D $ 174.59 163,997.41 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/20/2007   S   1,800 D $ 174.6 162,197.41 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/20/2007   S   100 D $ 174.61 162,097.41 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/20/2007   S   200 D $ 174.66 161,897.41 (1) D  

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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 (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 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
(Month/Day/Year)		 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
Employee Stock Option (right to buy) $ 37.36 02/20/2007   M     24,900 12/31/2006 12/31/2012 Common Stock (par value $0.01 per share) 24,900 $ 0 125,100 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
ANDERSON KEITH
BLACKROCK, INC.
40 EAST 52ND STREET
NEW YORK, NY 10022		       Vice Chairman  

Signatures

 /s/ Daniel R. Waltcher as Attorney-in-Fact for Keith Anderson   02/22/2007
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Includes 9,552 shares of restricted Common Stock granted under the BlackRock, Inc. 1999 Stock Award and Incentive Plan (the "Incentive Plan"), vesting on 12/15/07. Also, includes 8,397 Restricted Stock Units granted under the Incentive Plan, vesting in equal installments on 1/31/08 and 1/31/09, and 16,446 Restricted Stock Units granted under the Incentive Plan, vesting in equal installments on 1/31/08, 1/31/09 and 1/31/10. Each Restricted Stock Unit is payable solely by delivery of an equal number of shares of Common Stock.
 
Remarks:
This Form 4 is being filed in two parts (part one of two).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

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