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 * TRANTER GREGORY D   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) Executive Vice President (Last) (First) (Middle) C/O THE HANOVER INSURANCE GROUP, INC., 440 LINCOLN ST. (E-6) 3. Date of Earliest Transaction (Month/Day/Year) 01/20/2012 (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 01/20/2012   A(1)   3,250 A $ 0 36,857 D   Common Stock 01/20/2012   A(2)   4,500 A $ 0 41,357 (3) 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

Common Stock Option (right to buy)

$ 36.81

01/20/2012

A

22,500

(4)

01/20/2022

Common Stock

22,500

$ 0

22,500

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
TRANTER GREGORY D C/O THE HANOVER INSURANCE GROUP, INC. 440 LINCOLN ST. (E-6) WORCESTER, MA 01653			Executive Vice President

Signatures

Walter H. Stowell pursuant to Confirming Statement		01/24/2012
**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)	Grant of restricted stock pursuant to 2006 Long-Term Incentive Plan. The restricted shares vest on the second anniversary of the grant date.
(2)	Grant of restricted stock units pursuant to 2006 Long-Term Incentive Plan. The units vest 50% on the third anniversary of the grant date and 50% on the fourth anniversary of the grant date.
(3)	On December 30, 2011, the plan sponsor terminated the THG Stock Fund investment option in the Company's 401(k). In connection with the termination, Reporting Person's investment in the fund was automatically liquidated and transferred to a different investment option. Accordingly, Reporting Person no longer holds any shares of THG common stock indirectly through the 401(k).
(4)	The option vests 50% on the third anniversary of the grant date and 50% on the fourth anniversary of the grant date.

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