White Mountains Insurance Group Ltd
CIK: 0000776867
Transaction Breakdown
Open Market Buys (P)0 (0.0%)
High conviction signal
Open Market Sales (S)1 (100.0%)
Position reduction
Option Exercises (M)0 (0.0%)
Derivative conversions
Awards (A)0 (0.0%)
Compensation grants
Other (G, F, J, C, D, …)0 (0.0%)
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
MAX
MediaAlpha, Inc.
10% Owner
Discretionary Trading P&L
Holdings
About WHITE MOUNTAINS INSURANCE GROUP LTD
WHITE MOUNTAINS INSURANCE GROUP LTD (SEC CIK 0000776867) files insider reports with the SEC as 10% Owner of MediaAlpha, Inc. (MAX).
Signal8 holds 1 ownership filing by WHITE MOUNTAINS INSURANCE GROUP LTD, a Form 4, filed on Nov 5, 2026. Those filings report 1 transaction, the latest on Nov 4, 2026. Signal8's Form 4 history starts in Sep 2024.
The business address on WHITE MOUNTAINS INSURANCE GROUP LTD's filings is in HANOVER, NH.
Recent filings by WHITE MOUNTAINS INSURANCE GROUP LTD
- Nov 4, 2026: Open-market sale of MAX shares (Form 4, code S).
Other insiders filing for MediaAlpha, Inc. (MAX)
- Yi Steven
- Nonko Eugene, Director
- Yeh Kuanling Amy, Chief Technology Officer
- Cramer Keith, Chief Revenue Officer
- Sinanyan Tigran
- COYNE JEFFREY B, GENERAL COUNSEL AND SECRETARY