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Who

Giles E. Harrison

President

Company insider

Files Form 4 as: President, White Mountains Insurance Group.

In numbers

Trades disclosed
4
Buys
0
Sells
0
Bought
$0
Sold
$0
Companies
1
Companies where not an officer
0
First trade
10 Jun 2024
Last trade
25 Feb 2026
Last filed
27 Feb 2026

Companies traded

Where they are an officer
WTM White Mountains Insurance GroupOfficer · Insurance · last 25 Feb 20260 buys · 0 sells

Activity over time

Not enough dated trades to draw.

Every trade

TradedCompanyWhatAmount
25 Feb 2026filed 27 Feb 2026WTM White Mountains Insurance GroupInsuranceSEC FORM 4 Code A—775 at $0.00filing
25 Feb 2026filed 27 Feb 2026WTM White Mountains Insurance GroupInsuranceSEC FORM 4 Code A—775 at $0.00filing
26 Feb 2025filed 28 Feb 2025WTM White Mountains Insurance GroupInsuranceSEC FORM 4 Code A—900 at $0.00filing
10 Jun 2024filed 10 Jun 2024WTM White Mountains Insurance GroupInsuranceSEC FORM 4 Code A—1,000 at $0.00filing

News

No headline names them, or the companies they trade most, lately.

Sectors

No trade we could place in a sector.

Related people

David Allen TannerDirector · Director at White Mountains Insurance Group, filing Form 4 there in the last year
Stephen KlarDirector · Director at White Mountains Insurance Group, filing Form 4 there in the last year
Reid Tarlton CampbellDirector · Director at White Mountains Insurance Group, filing Form 4 there in the last year
Peter M. CarlsonDirector · Director at White Mountains Insurance Group, filing Form 4 there in the last year
John ChuDirector · Director at White Mountains Insurance Group, filing Form 4 there in the last year