Form 4 for WTM WHITE MOUNTAINS INSURANCE GROUP LTD
Accepted 2025-12-16 00:00:00 ET · period of report 2025-12-16 · accession 0000776867-25-000025 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025-12-16 | 2025-12-16 | WTM | Gelston Philip A | Dir | S - Sale | $2,048.51 | -165 | 1,568 | -10% | -$338.0K |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Shares | 2025-12-16 | S | D | 165 | $2,048.51 | 1,568 | D | — | — |