Director gifts 225 White Mountains (WTM) common shares in Form 4

Rhea-AI Filing Summary

WHITE MOUNTAINS INSURANCE GROUP LTD director David Allen Tanner reported a disposition of shares through a bona fide gift. He transferred 225 common shares at a stated price of $0.00 per share on this Form 4. After the gift, he directly owns 1,879 common shares.

Insider Trade Summary

225 shares gifted

Mixed 1 txn

Insider Tanner David Allen

Role Director

Type	Security	Shares	Price	Value
Gift	Common Shares	225	$0.00	--

Holdings After Transaction: Common Shares — 1,879 shares (Direct)

Footnotes (1)

Form 4 Insider Transactions: What Each Field Means →

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).

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.

1. Name and Address of Reporting Person^*

Tanner David Allen

(Last) (First) (Middle)

C/O WHITE MOUNTAINS INSURANCE GROUP, LTD

23 SOUTH MAIN STREET, SUITE 3B

(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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
03/04/2026

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	03/04/2026		G		225	D	$0	1,879	D

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:

	Wesley C. Bell, by Power of Attorney	03/04/2026
	** 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.

FAQ

What insider transaction did WHITE MOUNTAINS (WTM) director David Allen Tanner report?

Director David Allen Tanner reported a bona fide gift of 225 common shares. This Form 4 shows a transfer classified as a gift, not an open-market sale or purchase, reflecting a non-cash disposition of his directly held WHITE MOUNTAINS common shares.

How many WHITE MOUNTAINS (WTM) shares did David Allen Tanner transfer?

David Allen Tanner transferred 225 common shares of WHITE MOUNTAINS. The transaction is coded as a bona fide gift, indicating a non-market transfer of ownership rather than a sale, affecting only his personal holdings as reported in this Form 4 filing.

What is David Allen Tanner’s WHITE MOUNTAINS (WTM) shareholding after the reported gift?

After the reported gift, David Allen Tanner directly holds 1,879 common shares of WHITE MOUNTAINS. This post-transaction balance reflects the reduction from his account following the 225-share bona fide gift disclosed in the non-derivative transaction section.

What does transaction code G mean in this WHITE MOUNTAINS (WTM) Form 4?

Transaction code G on this Form 4 represents a bona fide gift. It identifies the transfer of 225 WHITE MOUNTAINS common shares as a gift transaction, distinguishing it from open-market sales, purchases, or option exercises typically reported under different transaction codes.

Was the WHITE MOUNTAINS (WTM) insider transaction a market sale or purchase?

The reported transaction was not a market sale or purchase. It is classified as a bona fide gift of 225 common shares at a stated price of $0.00, indicating a non-cash transfer rather than a trade executed on the open market.