How many insider trades does FilingIQ track for WTM?

FilingIQ tracks 441 Form 4 insider transactions for WTM (WHITE MOUNTAINS INSURANCE GROUP LTD), covering filings from Feb 13, 2015 onwards. 7 of those were filed in the last 90 days.

Are WTM insiders net buyers or net sellers?

Across the full Form 4 history for WTM, 16 transactions (4%) were open-market purchases and 88 (20%) were open-market sales. Compensatory awards and option exercises are filtered out of these counts.

Where does WTM insider data come from?

Every transaction shown on this page is sourced directly from SEC EDGAR Form 4 filings. FilingIQ parses the raw XML, normalises insider identity across reporting variations, and scores each trade on its multi-factor composite model.

What sector is WTM in?

WHITE MOUNTAINS INSURANCE GROUP LTD (WTM) is classified in the Financial Services sector, specifically Insurance - Property & Casualty, with a current market capitalisation of $5.42B.

WTM insider trading

NYSE Financial Services

WHITE MOUNTAINS INSURANCE GROUP LTD — scored insider trade history from SEC Form 4 filings, parsed and contextualised by FilingIQ.

Total Form 4 trades

441

Last 90 days

Buys / sells

4% / 20%

Market cap

$5.42B

About WHITE MOUNTAINS INSURANCE GROUP LTD

White Mountains Insurance Group, Ltd., through its subsidiaries, engages in the provision of insurance and other financial services in the United States. It operates through four segments: Ark/WM Outrigger, HG Global, Kudu, and Bamboo. The Ark/WM Outrigger segment offers insurance and reinsurance products, including property, specialty, marine and energy, casualty, and accident and health. The HG Global segment provides reinsurance to BAM, focusing on single risk limits for small-to-medium sized, and public investment grade municipal bonds that are issued to finance public purpose projects, including schools, utilities, and transportation facilities. The Kudu segment offers capital solutions for boutique asset and wealth managers for various purposes comprising generational ownership transfers, management buyouts, acquisition and growth finance, and legacy partner liquidity, as well as strategic assistance to investees. The Bamboo segment is involved in the operation of a capital-light, tech- and data-enabled insurance distribution platform, which provides homeowners' insurance and related products to the residential property market. White Mountains Insurance Group, Ltd. was incorporated in 1980 and is headquartered in Hamilton, Bermuda.

Company website: www.whitemountains.com

WTM insider activity at a glance

FilingIQ has scored 441 insider transactions for WTM since Feb 13, 2015. The most recent filing in our index is dated Mar 19, 2026.

Across the full history, 16 open-market purchases and 88 open-market sales were filed under transaction codes P and S respectively. Compensatory share awards (code A) and option exercises (code M) are tracked separately and not counted here.

The average FilingIQ composite score on WTM insider trades is 56.3/100, produced by FilingIQ's multi-factor Form 4 model. Model framework documented at methodology.

View live WTM trades on FilingIQ Raw filings on SEC EDGAR

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Frequently asked

How many insider trades does FilingIQ track for WTM?: FilingIQ tracks 441 Form 4 insider transactions for WTM (WHITE MOUNTAINS INSURANCE GROUP LTD), covering filings from Feb 13, 2015 onwards. 7 of those were filed in the last 90 days.
Are WTM insiders net buyers or net sellers?: Across the full Form 4 history for WTM, 16 transactions (4%) were open-market purchases and 88 (20%) were open-market sales. Compensatory awards and option exercises are filtered out of these counts.
Where does WTM insider data come from?: Every transaction shown on this page is sourced directly from SEC EDGAR Form 4 filings. FilingIQ parses the raw XML, normalises insider identity across reporting variations, and scores each trade on its multi-factor composite model.
What sector is WTM in?: WHITE MOUNTAINS INSURANCE GROUP LTD (WTM) is classified in the Financial Services sector, specifically Insurance - Property & Casualty, with a current market capitalisation of $5.42B.

Methodology & sources

Every WTM insider transaction shown on FilingIQ is parsed directly from a public SEC Form 4 XML filing. Insider identity is normalised across reporting variants (CIK changes, name spellings, related-party indirect holdings). The FilingIQ composite score is documented in full on the team page and algo disclosure. Not investment advice; see disclaimer.