Arkolith/Insider Trading/WTM/Form 4

Gelston Philip A

DirectorWHITE MOUNTAINS INSURANCE GROUP LTD (WTM) · full profile →Form 4 · filed Dec 16, 2025
Net Selling
Open-Market Buys
$0
Open-Market Sells
$338K
Net Open-Market Flow
-$338K
Transactions
1
1 non-derivative · 0 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Dec 16, 2025Sell(S)165$2048.51$338K2K

Transaction Codes

S
Open-market sale

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0000776867-25-000025) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML