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WHITE MOUNTAINS INSURANCE GROUP, LTD.

Activist investor & 5%+ owner · SC 13D/13G filings

Total Filings

5

Stocks Covered

1

Latest Filing

May 9, 2024

Filings

MEDIAALPHA, INC.

SC 13D/A · May 9, 2024

32.9%

17.9M shares

MEDIAALPHA, INC.

SC 13D/A · May 3, 2024

44.3%

22.9M shares

MEDIAALPHA, INC.

SC 13D/A · Jan 2, 2024

48.3%

22.9M shares

MEDIAALPHA, INC.

SC 13D/A · Nov 2, 2023

48.7%

22.9M shares

MEDIAALPHA, INC.

SC 13D · Jun 30, 2023

49.9%

22.9M shares