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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1. Name and Address of Reporting Person * Stuchbery Robert A   2. Issuer Name and Ticker or Trading Symbol HANOVER INSURANCE GROUP, INC. [THG] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) President & CEO, Chaucer (Last) (First) (Middle) 440 LINCOLN STREET, E-10 3. Date of Earliest Transaction (Month/Day/Year) 02/26/2015 (Street) WORCESTER, MA 01653 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 02/26/2015   A(1)   4,962 A $ 0 35,007 D   Common Stock 02/26/2015   F   2,333 D $ 70.86 32,674 D   Common Stock 02/26/2015   A(2)   5,513 A $ 0 38,187 D   Common Stock 02/26/2015   F   2,592 D $ 70.86 35,595 D   Common Stock 02/26/2015   F(3)   1,481 D $ 70.86 34,114 (4) 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

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Stuchbery Robert A 440 LINCOLN STREET E-10 WORCESTER, MA 01653			President & CEO, Chaucer

Signatures

/s/ Matthew R. Frascella pursuant to Confirming Statement		03/02/2015
**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 February 26, 2013, the Reporting Person was granted 3,675 (target) performance-based restricted stock units ("PBRSUs") pursuant to the Issuer's 2006 Long-Term Incentive Plan (the "2006 Plan"). The PBRSUs were subject to both performance-based and time-based vesting conditions. On February 26, 2015, (i) the performance condition was certified at 135% of the target award vesting the performance condition of the PBRSUs, and (ii) the time-based vesting condition was satisfied, resulting in the vesting of the award at the amount shown in Column 4.
(2)	On February 26, 2013, the Reporting Person was granted 3,675 (target) PBRSUs pursuant to the 2006 Plan. The PBRSUs were subject to both performance-based and time-based vesting conditions. On February 26, 2015, (i) the performance condition was certified at 150% of the target award vesting the performance condition of the PBRSUs, and (ii) the time-based vesting condition was satisfied, resulting in the vesting of the award at the amount shown in Column 4.
(3)	Represents shares that were forfeited to pay withholding taxes upon the vesting of time-based restricted stock units that were previously granted by the Issuer.
(4)	Does not include 484 shares held indirectly by the Trustee of the Chaucer Share Incentive Plan.

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