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 *
  Tripp Ann Kirkpatrick
 2. Date of Event Requiring Statement (Month/Day/Year)
04/24/2018		 3. Issuer Name and Ticker or Trading Symbol
HANOVER INSURANCE GROUP, INC. [THG]
(Last)
(First)
(Middle)
C/O 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)
SVP & Chief Investment Officer
 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 15,966.008 (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) 02/26/2023 Common Stock 2,117 $ 42.49 D  
Common Stock Option (right to buy)   (3) 02/19/2024 Common Stock 5,000 $ 57.99 D  
Common Stock Option (right to buy)   (4) 02/27/2025 Common Stock 5,000 $ 70.24 D  
Common Stock Option (right to buy)   (5) 02/23/2026 Common Stock 4,550 $ 82.74 D  
Common Stock Option (right to buy)   (6) 02/24/2027 Common Stock 4,290 $ 91.19 D  
Common Stock Option (right to buy)   (7) 02/27/2028 Common Stock 3,480 $ 110.57 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Tripp Ann Kirkpatrick
C/O THE HANOVER INSURANCE GROUP, INC.
440 LINCOLN STREET
WORCESTER, MA 01653		       SVP & Chief Investment Officer  

Signatures

/s/ Ann K. Tripp 04/27/2018
**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 10,764 shares held by the Reporting Person and (i) 1,810 restricted stock units ("RSUs") that vest on 2/23/19; (ii) 1,855 RSUs that vest on 2/24/20; and (iii) 1,537.008 RSUs that vest on 2/27/21. In each case the Reporting Person must be continuously employed by the Issuer through the applicable vesting date for the RSUs to vest. Upon vesting, the RSUs convert into an equivalent number of shares of common stock.
(2) The option, originally for a total of 6,350 shares, vested 1/3 on each of 2/26/14, 2/26/15 and 2/26/16.
(3) The option vested 1/3 on each of 2/19/15, 2/19/16 and 2/19/17.
(4) The option vested 1/3 on each of 2/27/16, 2/27/17 and 2/27/18.
(5) The option vested 1/3 on each of 2/23/17 and 2/23/18, and the remaining 1/3 will vest on 2/23/19.
(6) The option vested 1/3 on 2/24/18, and will vest 1/3 on each of 2/24/19 and 2/24/20.
(7) The option will vest 1/3 on each of 2/27/19, 2/27/20 and 2/27/21.

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