SEC Form 4 · accession 0001668244-16-000027

WHITE MOUNTAINS INSURANCE GROUP LTD · WTM

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

Officer — Chief Executive Officer · Director · Other

Period of report

Dec 8, 2016

Accepted (ET)

Dec 12, 2016 · 9:00 pm EST

Rule 10b5-1 plan

unknown — predates the checkbox

Issuer CIK

0000776867

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Shares^F1	Dec 8, 2016	M	3,000	$742.00	A	42,688	D
Common Shares^F1	Dec 8, 2016	F	2,595	$857.65	D	40,093	D
Common Shares^F1	Dec 9, 2016	M	3,000	$742.00	A	43,093	D
Common Shares^F1	Dec 9, 2016	F	2,603	$854.90	D	40,490	D
Common Shares^F1	Dec 12, 2016	M	5,000	$742.00	A	45,490	D
Common Shares^F1	Dec 12, 2016	F	4,274	$868.00	D	41,216	D
Common Shares	Dec 12, 2016	S	2,000	$867.89	D	8,000	I	by Grantor Retained Annuity Trust
Common Shares (restricted)	holding	—	—		—	5,000	D
Common Shares	holding	—	—		—	6,106	I	By IRA
Common Shares^F2	holding	—	—		—	717	I	By 401(k)

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Common Share Options (right to buy)^F3	$742.00	Dec 8, 2016	M	3,000	D	—	Jan 20, 2017	Common Shares	3,000	69,000	D
Common Share Options (right to buy)^F3	$742.00	Dec 9, 2016	M	3,000	D	—	Jan 20, 2017	Common Shares	3,000	66,000	D
Common Share Options (right to buy)^F3	$742.00	Dec 12, 2016	M	5,000	D	—	Jan 20, 2017	Common Shares	5,000	61,000	D

F1Includes shares held in accounts jointly owned by the Reporting Person and his spouse.
F2Since the date of the Reporting Person's last filing, he acquired 1 WTM Common Share under the company 401(k) plan. The WTM Common Share was purchased at fair market value on the date of purchase. The information in this report is based on a plan report dated as of December 8, 2016.
F3All of the options are fully vested and exercisable.