White Mountains Insurance : 28 Feb 25 G. Roundtree Form 4

WTM

SEC Form 4

FORM 4

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5- 1(c). See Instruction 10.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

OMB APPROVAL

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

OMB Number:

3235-0287

Estimated average burden

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934

hours per response:

0.5

or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person*

2. Issuer Name and Ticker or Trading Symbol

5. Relationship of Reporting Person(s) to Issuer

Rountree George Manning

WHITE MOUNTAINS INSURANCE

(Check all applicable)

GROUP LTD[ WTM ]

Director

10% Owner

Officer (give title

Other (specify

(Last)

(First)

(Middle)

below)

below)

Chief Executive Officer

C/O WHITE MOUNTAINS INSURANCE

3. Date of Earliest Transaction (Month/Day/Year)

GROUP, LTD

02/26/2025

23 SOUTH MAIN STREET, SUITE 3B

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable

Line)

(Street)

Form filed by One Reporting Person

HANOVER

NH

03755

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

2A. Deemed

3.

4. Securities Acquired (A) or

5. Amount of

6. Ownership

7. Nature

Date

Execution Date,

Transaction

Disposed Of (D) (Instr. 3, 4 and Securities

Form: Direct

of Indirect

(Month/Day/Year)

if any

Code (Instr.

5)

Beneficially

(D) or Indirect

Beneficial

(Month/Day/Year)

8)

Owned Following

(I) (Instr. 4)

Ownership

Reported

(Instr. 4)

Code V

Amount

(A) or

Price

Transaction(s)

(D)

(Instr. 3 and 4)

Common Shares (restricted)

02/26/2025

A

1,625(1)

A

$0

5,425

D

Common Shares

18,809

D

Common Shares

120

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

2.

3. Transaction

3A. Deemed

4.

5. Number

6. Date Exercisable and

7. Title and

8. Price of

9. Number of 10.

11. Nature

Derivative

Conversion

Date

Execution Date,

Transaction

of

Expiration Date

Amount of

Derivative

derivative

Ownership

of Indirect

Security

or Exercise

(Month/Day/Year) if any

Code (Instr.

Derivative

(Month/Day/Year)

Securities

Security

Securities

Form:

Beneficial

(Instr. 3)

Price of

(Month/Day/Year)

8)

Securities

Underlying

(Instr. 5)

Beneficially

Direct (D)

Ownership

Derivative

Acquired

Derivative

Owned

or Indirect

(Instr. 4)

Security

(A) or

Security (Instr.

Following

(I) (Instr. 4)

Disposed

3 and 4)

Reported

of (D)

Transaction(s)

(Instr. 3, 4

(Instr. 4)

and 5)

Amount

or

Number

Date

Expiration

of

Code

V

(A) (D)

Exercisable

Date

Title Shares

Explanation of Responses:

1. On February 26, 2025, the Reporting Person received a restricted share award of 1,625 Common Shares, which vests on January 1, 2028.

Wesley C. Bell, by Power of

02/27/2025

Attorney

** 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).

Disclaimer

White Mountains Insurance Group Ltd. published this content on February 28, 2025, and is solely responsible for the information contained therein. Distributed by Public, unedited and unaltered, on February 28, 2025 at 15:40:46.267.