Harrison Giles E 4

What Happened

• Harrison Giles E, President of White Mountains Insurance Group Ltd. (WTM), was granted a restricted share award of 775 common shares on February 25, 2026. The shares were awarded at $0.00 (compensation award) and vest on January 1, 2029. This is an equity compensation grant (transaction code A), not an open-market purchase or sale.

Key Details

• Transaction date: February 25, 2026; Form 4 filed February 27, 2026 (timely — within the two-business-day reporting window).
• Award: 775 common shares, acquisition price reported $0.00; vesting date January 1, 2029 (subject to forfeiture until vested).
• Additional note: Filing reflects accumulation of 2 common shares in the reporting person’s company retirement account since the last report (per plan report dated Feb 25, 2026).
• Shares owned after the transaction: not specified in the provided filing details.
• Transaction type: Award/Grant (A). No tax-withholding sale or 10b5-1 plan indicated in the disclosed footnotes.

Context

• Restricted share awards are compensation and typically vest over time; they do not represent an immediate market purchase and are common for executive pay. Such grants signal standard equity compensation rather than an actionable buy/sell signal for investors.