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 *
MULHERIN MATTHEW J
   2. Issuer Name and Ticker or Trading Symbol
HUNTINGTON INGALLS INDUSTRIES, INC. [HII] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
VP & Gen. Mgr Newport News Ops
(Last)
(First)
(Middle)
4101 WASHINGTON AVENUE		 3. Date of Earliest Transaction (Month/Day/Year)
03/31/2011
(Street)

NEWPORT NEWS, VA 23607		 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
Common Stock 03/31/2011   A   24,096 A $ 0 27,515 (1) (2) D  
Common Stock               127.2836 (1) I See footnote (3)

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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
Stock Option (Right-to-Buy) $ 34.73 03/31/2011   A(4)   6,611     (5) 08/20/2012 Common Stock 6,611 (6) 6,611 D  
Stock Option (Right-to-Buy) $ 28.51 03/31/2011   A(4)   8,263     (5) 08/20/2013 Common Stock 8,263 (6) 8,263 D  
Stock Option (Right-to-Buy) $ 31.76 03/31/2011   A(4)   13,222     (5) 06/14/2014 Common Stock 13,222 (6) 13,222 D  
Stock Option (Right-to-Buy) $ 27.23 03/31/2011   A(4)   12,344     (7) 02/17/2016 Common Stock 12,344 (6) 12,344 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
MULHERIN MATTHEW J
4101 WASHINGTON AVENUE
NEWPORT NEWS, VA 23607		       VP & Gen. Mgr Newport News Ops  

Signatures

 /s/ George M. Simmerman, Jr., Attorney-in-fact for Matthew J. Mulherin   04/04/2011
**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 shares of Issuer common stock received in connection with the legal and structural separation (the "Spin-Off") of the Issuer from Northrop Grumman Corporation ("NGC"), in an exempt transaction pursuant to Rule 16a-9.
(2) Total amount includes 24,096 restricted stock rights granted under the Huntington Ingalls Industries, Inc. 2011 Long-Term Incentive Stock Plan ("HII LTISP") on 3/31/11, with 100% vesting on 3/31/14. Grant awarded pursuant to Rule 16b-3(d).
(3) Held in the Huntington Ingalls Industries, Inc. Savings Plan (the "Plan"), a qualified profit sharing plan, as of 3/31/11. Share totals with respect to the Plan are based upon unit accounting and therefore may reflect a decrease in units attributable to an individual though no disposition occurred.
(4) In conjunction with the Spin-Off, each stock option held by the Reporting Person as of the Spin-Off that was granted to the Reporting Person pursuant to an equity plan of NGC has been converted into a stock option granted by the Issuer pursuant to the HII LTISP on substantially the same terms (other than with respect to the exercise price and the number and type of shares covered thereby), pursuant to the anti-dilution provisions of the stock option. The grant and terms of the adjustment were approved by the Issuer's Board of Directors.
(5) This option is fully exercisable.
(6) Granted without payment by grantee.
(7) The vesting schedule of the NGC option, vesting over a period of three years to the extent of one-third (33%) annual equal installments on 2/17/10, 2/17/11 and 2/17/12, has been carried over to the Issuer option.
 
Remarks:
Exhibit List: Exhibit 24.1-Power of Attorney

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