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 *
HALLAC CHARLES
   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)
Co-Chief Operating Officer
(Last)
(First)
(Middle)
BLACKROCK, INC., 55 EAST 52ND STREET		 3. Date of Earliest Transaction (Month/Day/Year)
03/10/2010
(Street)

NEW YORK, NY 10055		 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) 03/10/2010   A   8,893 (1) A $ 0 520,181.3828 (2) D  
Shares of Common Stock (par value $0.01 per share)               36,847.3924 I By family trust
Shares of Common Stock (par value $0.01 per share)               682.1424 I By family trust

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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) $ 167.76 03/10/2010   A   126,087   09/29/2011 02/01/2017 Common Stock (par value $0.01 per share) 126,087 $ 0 126,087 (3) D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
HALLAC CHARLES
BLACKROCK, INC.
55 EAST 52ND STREET
NEW YORK, NY 10055		       Co-Chief Operating Officer  

Signatures

 /s/ Daniel R. Waltcher as Attorney-in-Fact for Charles Hallac   03/12/2010
**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) On January 31, 2007, the reporting person received a 4 year and 8 month long-term award of 8,893 Restricted Stock Units, subject to the achievement of a performance goal and with a vesting date of September 29, 2011. Although the performance goal was met in 2009, the Restricted Stock Units will not vest until September 29, 2011 and remain subject to other conditions until that time. The number of Restricted Stock Units was determined by dividing the approved dollar value of the equity award by $168.66, which was the 5-day average closing price for January 25, 26, 29, 30 and 31, 2007. The Restricted Stock Units were granted under BlackRock, Inc.'s long-term incentive program which is designed to aid in the retention of senior management and align their interests with long-term shareholder interests.
(2) Includes (i) 2,733 Restricted Stock Units vesting on 1/31/11, (ii) 11,584 Restricted Stock Units vesting in equal installments on 1/31/11 and 1/31/12, (iii) 11,543 shares of Restricted Stock vesting in installments on 1/31/11, 1/31/12 and 1/31/13, (iv) 5,143 shares of Restricted Stock vesting on 1/31/11, (v) 3,429 shares of Restricted Stock vesting on 1/31/12 and (vi) 8,893 Restricted Stock Units vesting on 9/29/11.
(3) On January 31, 2007, the reporting person received a 4 year and 8 month long-term award in the form of options to purchase 126,087 shares of BlackRock, Inc. Common Stock, subject to the achievement of a performance goal and with a vesting date of September 29, 2011. Although the performance goal was met in 2009, the options will not vest until September 29, 2011 and remain subject to other conditions until that time. On September 29, 2011, the options may be exercised at a price of $167.76 per share. The options were granted under BlackRock, Inc.'s long-term incentive program which is designed to aid in the retention of senior management and align their interests with long-term shareholder interests.

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