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 * Harris Jerrold B   2. Issuer Name and Ticker or Trading Symbol BlackRock Build America Bond Trust [BBN] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 55 EAST 52ND STREET 3. Date of Earliest Transaction (Month/Day/Year) 05/04/2012 (Street) NEW YORK, NY 10055 4. If Amendment, Date Original Filed(Month/Day/Year) 05/07/2012 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 Common Stock 05/04/2012   P   4,400 A $ 22.169 4,400 I (1) By Jerrold B. Harris 2001 Trust Account (1) Common Stock 05/04/2012   P   1,000 A $ 22.175 4,203 (2) I By Bobette J. Harris 2001 Trust Account (2) Common Stock 05/07/2012   P   3,203 (3) A $ 22.275 4,203 (2) I By Bobette J. Harris 2001 Trust Account (2)

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

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Harris Jerrold B 55 EAST 52ND STREET NEW YORK, NY 10055	X

Signatures

/s/ Janey Ahn as Attorney-in-Fact		08/07/2012
**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 May 7, 2012, the reporting person's ownership of 4400 common shares was inadvertently reported as direct beneficial ownership and should have been reported as indirect beneficial ownership through the Jerrold B. Harris 2001 Trust Account.
(2)	On May 7, 2012, the reporting person's indirect beneficial ownership of 4203 common shares through the Bobette J. Harris 2001 Trust Account was inadvertently reported as being 8600 common shares and should have been reported as 4203 common shares.
(3)	On May 7, 2012, the number of common shares purchased by the Bobette J. Harris 2001 Trust Account was inadvertently reported as being 3200 common shares and should have been reported as 3203 common shares.

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