WHITE MOUNTAINS INSURANCE GROUP LTD - WTM

Insiders (Form 4) · last 180 days · showing up to 200 transactions · Form 144 is shown in the SEC filings tab · Updating…
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Transaction codes: P = Open-market purchase · S = Open-market sale · A = Grant/award · M = Exercise/conversion of derivative · G = Gift · F = Tax withholding · J = Other · A/D: A = Acquired (buy/receive) · D = Disposed (sell/give)
Filed Owner Title Code A/D Shares Price Value Shares after SEC
Mar 20, 2026 EVP & General Counsel G D 50.0 0.0 0.0 17,857.0 View
Mar 05, 2026 G D 225.0 0.0 0.0 1,879.0 View
Feb 27, 2026 Chief Financial Officer A A 500.0 0.0 0.0 1,200.0 View
Feb 27, 2026 MD & Chief Accounting Officer A A 600.0 0.0 0.0 1,825.0 View
Feb 27, 2026 President A A 775.0 0.0 0.0 2,675.0 View
Feb 27, 2026 Chief Executive Officer A A 1,500.0 0.0 0.0 3,650.0 View
Feb 27, 2026 EVP & General Counsel A A 775.0 0.0 0.0 2,500.0 View
Jan 05, 2026 MD & Chief Accounting Officer F D 274.0 2,078.03 569,380.22 2,491.0 View
Jan 02, 2026 Chief Financial Officer F D 131.0 2,078.03 272,221.93 772.0 View
Jan 02, 2026 EVP & General Counsel F D 398.0 2,078.03 827,055.94 17,907.0 View
Jan 02, 2026 Chief Executive Officer F D 425.0 2,078.03 883,162.75 1,655.0 View
Dec 23, 2025 MD & Chief Accounting Officer G D 60.0 0.0 0.0 2,165.0 View
Dec 22, 2025 S D 5,000.0 0.0 0.0 10,440.0 View
Dec 22, 2025 S D 5,000.0 2,050.0 10,250,000.0 10,440.0 View
Dec 22, 2025 Chief Executive Officer S D 5,000.0 2,050.0 10,250,000.0 13,809.0 View
Dec 16, 2025 S D 165.0 2,048.51 338,004.15 1,568.0 View
Nov 26, 2025 G D 50.0 0.0 0.0 15,440.0 View
Nov 10, 2025 G D 4.0 0.0 0.0 2,104.0 View