How many SEC Form 4 insider filings does WTM have?

WHITE MOUNTAINS INSURANCE GROUP LTD (WTM) has 17 SEC Form 4 filings (17 transaction rows) in the rolling 365-day window, disclosed by 0 distinct insiders. Most recent filing: May 22, 2026.

When was the most recent SEC Form 4 filing for WTM?

The most recent Form 4 filing for WTM on Tracefour is dated May 22, 2026.

WTM

Name: WTM Insider Trading Activity
Creator: Tracefour
License: https://www.usa.gov/government-works
Keywords: WTM, insider trading, SEC Form 4, insider transactions

WHITE MOUNTAINS INSURANCE GROUP LTD

WHITE MOUNTAINS INSURANCE GROUP LTD (WTM) has 17 SEC Form 4 filings (17 transaction rows) in the rolling window, disclosed by 0 distinct insiders. Most recent filing: May 22, 2026.

Industry:Insurance - Property & Casualty
CEO:Liam Caffrey
Employees:893
HQ:Hamilton, US
IPO:1985-10-23

No open-market insider trades for WTM (WHITE MOUNTAINS INSURANCE GROUP LTD) in the last 365 days.

Why this page may be quiet. Tracefour displays Form 4 open-market purchases (P) and sales (S): the two transaction codes that signal directional conviction. Restricted stock grants, option exercises, gifts, and tax-withholding sales are filed but intentionally not shown: they're disclosure mechanics, not buy/sell decisions.

Many large-cap executives trade through pre-scheduled 10b5-1 plans set months in advance and batch-disclosed each quarter, so the latest filing on EDGAR for a mega-cap can be weeks old without any insider actually choosing to trade in that window.

See all Form 4 filings on SEC EDGAR ↗

Congress trading WTM

See timeline →

RRep. Michael McCaulSale$1,001 - $15,0002026-06-18

STOCK Act disclosures are filed up to 45 days after the trade. Amount is a disclosed range, not an exact figure.

Related companies

WHITE MOUNTAINS INSURANCE GROUP LTD is in the Finance & Insurance sector.