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 *
SCHLOSSTEIN RALPH
   2. Issuer Name and Ticker or Trading Symbol
BlackRock Inc. [BLK] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
President
(Last)
(First)
(Middle)
BLACKROCK, INC., 40 EAST 52ND STREET		 3. Date of Earliest Transaction (Month/Day/Year)
02/13/2007
(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) 02/13/2007   M   49,000 A $ 43.3125 699,934.83 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/13/2007   S   900 D $ 170.5 699,034.83 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/13/2007   S   3,000 D $ 170.51 696,034.83 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/13/2007   S   300 D $ 170.52 695,734.83 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/13/2007   S   500 D $ 170.53 695,234.83 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/13/2007   S   2,900 D $ 170.54 692,334.83 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/13/2007   S   2,300 D $ 170.55 690,034.83 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/13/2007   S   1,000 D $ 170.56 689,034.83 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/13/2007   S   2,600 D $ 170.57 686,434.83 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/13/2007   S   400 D $ 170.59 686,034.83 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/13/2007   S   3,100 D $ 170.6 682,934.83 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/13/2007   S   2,500 D $ 170.61 680,434.83 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/13/2007   S   2,441 D $ 170.62 677,993.83 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/13/2007   S   800 D $ 170.63 677,193.83 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/13/2007   S   1,600 D $ 170.64 675,593.83 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/13/2007   S   1,300 D $ 170.65 674,293.83 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/13/2007   S   500 D $ 170.66 673,793.83 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/13/2007   S   1,500 D $ 170.67 672,293.83 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/13/2007   S   100 D $ 170.68 672,193.83 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/13/2007   S   100 D $ 170.69 672,093.83 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/13/2007   S   2,700 D $ 170.7 669,393.83 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/13/2007   S   800 D $ 170.71 668,593.83 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/13/2007   S   200 D $ 170.72 668,393.83 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/13/2007   S   700 D $ 170.73 667,693.83 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/13/2007   S   2,500 D $ 170.74 665,193.83 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/13/2007   S   300 D $ 170.77 664,893.83 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/13/2007   S   100 D $ 170.81 664,793.83 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/13/2007   S   100 D $ 170.82 664,693.83 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/13/2007   S   400 D $ 170.83 664,293.83 (1) D  
Shares of Common Stock (par value $0.01 per share) 02/13/2007   S   1,900 D $ 170.84 662,393.83 (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) $ 43.3125 02/13/2007   M     49,000   (2) 12/15/2010 Common Stock (par value $0.01 per share) 49,000 $ 0 11,000 D  
Employee Stock Option (right to buy) $ 43.3125 02/14/2007   M     11,000   (2) 12/15/2010 Common Stock (par value $0.01 per share) 11,000 $ 0 0 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
SCHLOSSTEIN RALPH
BLACKROCK, INC.
40 EAST 52ND STREET
NEW YORK, NY 10022		   X     President  

Signatures

 /s/ Daniel R. Waltcher as Attorney-in-Fact for Ralph Schlosstein   02/15/2007
**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 13,185 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 10,460 Restricted Stock Units granted under the Incentive Plan, vesting in equal installments on 1/31/08 and 1/31/09, and 18,358 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.
(2) The option vested in two equal installments on December 15, 2003 and December 15, 2004.
 
Remarks:
This Form 4 is being filed in three parts (part one of three).

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