FORM 4
[ X ] 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
                                                                                  
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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(f) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

NOLAN JOSEPH R JR 		2. Issuer Name and Ticker or Trading Symbol

NSTAR/MA [ NST ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                      _____ 10% Owner
__ X __ Officer (give title below)      _____ Other (specify below)
SVP-Cust and Corp Relations
(Last)          (First)          (Middle)

800 BOYLSTON STREET 		3. Date of Earliest Transaction (MM/DD/YYYY)

4/10/2012
(Street)

BOSTON, MA 02199
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3) 		2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. 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 Shares   4/10/2012     A    3800   A $0   89570   (1) D    
Common Shares   4/10/2012     A    8000   (2) A $0   97570   (1) D    
Common Shares   4/10/2012     F    2788   D $47.65   94782   (1) D    
Common Shares   4/10/2012     D    72970   D   (3) 21812   D    
Common Shares   4/10/2012     D    8000   D   (4) 13812   D    
Common Shares   4/10/2012     D    13812   D   (5) 0   D    
Common Shares   4/10/2012     D    10882   D   (6) 0   I   By 401(k)  

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3) 		2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. 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 7. Title and Amount of Securities Underlying Derivative Security
(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   $32.45   4/10/2012     D         5000    1/24/2011   1/24/2018   Common Shares   5000     (7) 0   D    
Employee Stock Option   $34.02   4/10/2012     D         10667    1/22/2012   1/22/2019   Common Shares   10667     (8) 0   D    
Employee Stock Option   $35.28   4/10/2012     D         14000    1/28/2013   1/28/2020   Common Shares   14000     (9) 0   D    

Explanation of Responses:
( 1)  Includes 72,970 Phantom Shares (deferred compensation obligations). Each Phantom Share is payable in one Common Share.
( 2)  Represents deferred share units of 4,100 shares that vest in three equal annual installments beginning on 01/27/2012 and 3,900 shares that vest in three equal annual installments beginning on 1/26/2013.
( 3)  Disposition of Phantom Shares pursuant to the merger agreement between issuer and Northeast Utilities ("NU") in exchange for 95,736 NU phantom shares having a market value of $36.79 per share on the effective date of the merger.
( 4)  Disposed of pursuant to the Merger in exchange for a total of 10,496 NU restricted shares subject to time vesting conditions.
( 5)  Disposed of pursuant to the Merger in exchange for a total of 18,121 NU common shares.
( 6)  Disposed of pursuant to the Merger in exchange for 14,277 NU common shares.
( 7)  This option was assumed by NU in the merger and replaced with an option to purchase 6,560 NU Common Shares at a price of $24.74 per share.
( 8)  This option was assumed by NU in the merger and replaced with an option to purchase 13,995 NU Common Shares at a price of $25.93 per share.
( 9)  This option was assumed by NU in the merger and replaced with an option to purchase 18,368 NU Common Shares at a price of $26.90 per share.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
NOLAN JOSEPH R JR
800 BOYLSTON STREET
BOSTON, MA 02199

SVP-Cust and Corp Relations

Signatures
/s/ Richard J. Morrison - Attorney in Fact for Joseph R. Nolan, Jr. 4/10/2012
** Signature of Reporting Person Date


Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.
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