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4
ROUNTREE GEORGE MANNING filed this Form 4 on 01/04/2017
Entire Document
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SEC FORM 4 SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number: 3235-0287
Estimated average burden
hours per response: 0.5
  
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person*
Rountree George Manning

(Last) (First) (Middle)
C/O WHITE MOUNTAINS INSURANCE GROUP LTD
80 SOUTH MAIN ST.

(Street)
HANOVER NH 03755

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
WHITE MOUNTAINS INSURANCE GROUP LTD [ WTM ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
Managing Director
3. Date of Earliest Transaction (Month/Day/Year)
01/01/2017
4. If Amendment, Date of 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
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 Shares 01/01/2017 F 950 D $836.05 4,847(1) D
Common Shares (restricted) 5,900(1) D
Common Shares 83 I by 401(k)
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 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: 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
Explanation of Responses:
1. On January 1, 2017, 2,250 restricted WTM Common Shares became unrestricted. 950 of the Common Shares were withheld by the Company to satisfy the Reporting Person's tax obligations.
Remarks:
Wesley C. Bell, by Power of Attorney 01/04/2017
** 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 Number.
Know all by these present, that the undersigned hereby 

constitutes and appoints each of Robert L. Seelig, Managing Director & General 

Counsel, and Jennifer L. Pitts, Secretary, of White 

Mountains Insurance Group, Ltd., Jason R. Lichtenstein,

Managing Director & Associate General Counsel, and Wesley Bell,

Vice President & Assistant General Counsel, signing singly, 

the undersigned's true and lawful attorney-in-fact to: 

(1) execute for and on behalf of the undersigned, in the 

undersigned's capacity as an officer and/or director of White 

Mountains Insurance Group, Ltd. (the "Company"), Forms 3, 4, 

and 5 in accordance with Section 16(a) of the Securities 

Exchange Act of 1934 and the rules thereunder;   

(2) do and perform any and all acts for and on behalf of the 

undersigned which may be necessary or desirable to complete 

and execute any such Form 3, 4, or 5, complete and execute 

any amendment or amendments thereto, and timely file such form 

with the United States Securities and Exchange Commission and 

any stock exchange or similar authority; and   

(3) take any other action of any type whatsoever in connection 

with the foregoing which, in the opinion of such attorney-in-fact, 

may be of benefit to, in the best interest of, or legally 

required by, the
 undersigned, it being understood that the 

documents executed by such attorney-in-fact on behalf of the 

undersigned pursuant to this Power of Attorney shall be in 

such form and shall contain such terms and conditions as such 

attorney-in-fact may approve in such attorney-in-fact's discretion. 

The undersigned hereby grants to each such attorney-in-fact full 

power and authority to do and perform any and every act and thing 

whatsoever requisite, necessary, or proper to be done in the 

exercise of any of the rights and powers herein granted, as 

fully to all intents and purposes as the undersigned might or 

could do if personally present, with full power of substitution or

revocation, hereby ratifying and confirming all that such 

attorney-in-fact, or such attorney-in-fact's substitute or 

substitutes, shall lawfully do or cause to be done by virtue of 

this power of attorney and the rights and powers herein granted.  

The undersigned acknowledges that the foregoing attorneys-in-fact, 

in serving in such capacity at the request of the undersigned, 

are not rendering legal advice of any form, other than satisfying 

regulatory filing requirements, with respect to any transactions 

to be reported on Forms 3, 4 and 5 are not assuming, nor is the 

Company assuming, any of the undersigned's responsibilities to 

comply with Section 16 of the Securities Exchange Act of 1934.

The undersigned hereby grants this Power of Attorney with the 

understanding that information provided to each such 

attorney-in-fact is strictly confidential and will not be 

disclosed to senior management, directors or other third parties 

whether affiliated or otherwise and will be used solely to 

complete and execute any such Form 3, 4 or 5, complete and 

execute any amendment or amendments thereto, and timely file 

such form with the United States Securities and Exchange Commission 

and any stock exchange or similar authority

This Power of Attorney shall remain in full force and effect 

until the undersigned is no longer required to file Forms 3, 

4, and 5 with respect to the undersigned's holdings of and 

transactions in securities issued by the Company, unless 

earlier revoked by the undersigned in a signed writing 

delivered to the foregoing attorneys-in-fact. 

IN WITNESS WHEREOF, the undersigned has caused this 

Power of Attorney to be executed as of this 

25th day of February 2016. 



/s/  G. Manning Rountree

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