Philip A. Gelston

Companies

• White Mountains Insurance GroupBoard member Mar 5, 2018 to now¹

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• WMWhite Mountains Insurance Group WTM1,703 shares²$3.7M at $2,166.33May 21, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• May 21, 2026Granted 135 shares of White Mountains Insurance Group²
• Dec 16, 2025Sold 165 shares at $2,048.51 of White Mountains Insurance Group³
• May 22, 2025Granted 150 shares of White Mountains Insurance Group⁴
• May 23, 2024Granted 165 shares of White Mountains Insurance Group⁵
• May 25, 2023Granted 180 shares of White Mountains Insurance Group⁶
• May 26, 2022Granted 225 shares of White Mountains Insurance Group⁷