Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF 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 *
  BARNES WARREN E.
 2. Date of Event Requiring Statement (Month/Day/Year)
10/19/2015		 3. Issuer Name and Ticker or Trading Symbol
HANOVER INSURANCE GROUP, INC. [THG]
(Last)
(First)
(Middle)
THE HANOVER INSURANCE GROUP, INC., 440 LINCOLN STREET		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
VP & Act. Principal Acctg. Off
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

WORCESTER, MA 01653		 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 Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock 7,385 (1)
D
 

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Common Stock Option (right to buy)   (2) 01/20/2022 Common Stock 1,500 $ 36.81 D  
Common Stock Option (right to buy)   (3) 02/26/2023 Common Stock 667 $ 42.49 D  
Common Stock Option (right to buy)   (4) 02/19/2024 Common Stock 1,600 $ 57.99 D  
Common Stock Option (right to buy)   (5) 02/27/2025 Common Stock 2,400 $ 70.24 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
BARNES WARREN E.
THE HANOVER INSURANCE GROUP, INC.
440 LINCOLN STREET
WORCESTER, MA 01653		       VP & Act. Principal Acctg. Off  

Signatures

/s/ Warren E. Barnes 10/22/2015
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(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 5,385 restricted stock units that are subject to vesting conditions.
(2) The option, granted on 1/20/2012 for a total of 3,000 shares, vested 50% on 1/20/15, and the remaining portion will vest on 1/20/16.
(3) The option, granted on 2/26/2013 for a total of 2,000 shares, vested 33% on each of 2/26/14 and 2/26/15, and the remaining portion will vest on 2/26/16.
(4) The option, granted on 2/19/2014 for a total of 2,400 shares, vested 33% on 2/19/15, another 33% will vest on 2/19/16, and the remaining portion will vest on 2/19/17.
(5) The option, granted on 2/27/2015 for a total of 2,400 shares, will vest 33% on each of 2/27/16 and 2/27/17, and the remaining portion will vest on 2/27/18.

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