InsiderTrades

CAMPBELL REID TARLTON

SEC CIK 1378156 · EDGAR

Buying vs selling by month open-market trades, last 24 months, WTM
BoughtSold

Companies

TickerCompanyTitleHoldingBoughtSoldTradesFirstLast
WTMWHITE MOUNTAINS INSURANCE GROUP LTDPres 10.6K — $10.25M 122022-01-012026-05-21

Most active insiders at WTM, 12 months

#InsiderTitleBoughtSold
1 Rountree George ManningCEO, Dir —$10.25M
2 CAMPBELL REID TARLTONDir —$10.25M
3 Gelston Philip ADir —$338.0K
4 Chu JohnDir ——
5 Papamichael Michael ACFO ——
6 Harrison Giles EPres ——
7 Caffrey Liam PCEO, Dir ——
8 Hildreth MichaelaCAO, MD ——
9 Dillon MargaretDir ——
10 SHANK SUZANNE F.Dir ——

Transactions 12

Type
Reset
X Filed Traded Ticker Company Insider Title Type Price Qty Owned ΔOwn Value
2026-05-22 10:30 2026-05-21 WTM WHITE MOUNTAINS INSURANCE GROUP LTD CAMPBELL REID TARLTON Dir A - Grant $0.00 +135 10.6K +1% $0
2025-12-22 2025-12-19 WTM WHITE MOUNTAINS INSURANCE GROUP LTD CAMPBELL REID TARLTON Dir S - Sale $0.00 -5,000 10.4K -32% $0
A 2025-12-22 2025-12-19 WTM WHITE MOUNTAINS INSURANCE GROUP LTD CAMPBELL REID TARLTON Dir S - Sale $2,050.00 -5,000 10.4K -32% -$10.25M
2025-11-26 2025-11-25 WTM WHITE MOUNTAINS INSURANCE GROUP LTD CAMPBELL REID TARLTON Dir G - Gift $0.00 -50 15.4K -0.3% $0
2025-05-23 2025-05-22 WTM WHITE MOUNTAINS INSURANCE GROUP LTD CAMPBELL REID TARLTON Dir A - Grant $0.00 +150 15.5K +1.0% $0
2024-05-24 2024-05-23 WTM WHITE MOUNTAINS INSURANCE GROUP LTD CAMPBELL REID TARLTON Dir A - Grant $0.00 +165 15.3K +1% $0
2024-03-21 2024-03-21 WTM WHITE MOUNTAINS INSURANCE GROUP LTD CAMPBELL REID TARLTON Dir G - Gift $0.00 -55 15.2K -0.4% $0
2024-02-23 2024-02-22 WTM WHITE MOUNTAINS INSURANCE GROUP LTD CAMPBELL REID TARLTON Dir A - Grant $0.00 +45 15.2K +0.3% $0
2024-01-02 2024-01-01 WTM WHITE MOUNTAINS INSURANCE GROUP LTD CAMPBELL REID TARLTON Pres F - Tax $1,505.01 -710 15.2K -4% -$1.07M
2023-01-03 2023-01-01 WTM WHITE MOUNTAINS INSURANCE GROUP LTD CAMPBELL REID TARLTON Pres F - Tax $1,414.33 -710 14.1K -5% -$1.00M
2022-06-02 2022-06-01 WTM WHITE MOUNTAINS INSURANCE GROUP LTD CAMPBELL REID TARLTON Pres G - Gift $0.00 -100 13.0K -0.8% $0
2022-01-04 2022-01-01 WTM WHITE MOUNTAINS INSURANCE GROUP LTD CAMPBELL REID TARLTON EVP, CFO F - Tax $1,013.90 -800 13.1K -6% -$811.1K

Purchase Sale Sale after option exercise All abbreviations