MediaAlpha, Inc. 10% holder White Mountains Insurance Group Ltd sells $76.5M in MAX shares
After the sale, the filing lists 12,356,223 shares held.
MediaAlpha, Inc. (MAX) 10% owner White Mountains Insurance Group Ltd sold $76.5 million of stock on Nov 4: 5,500,391 shares at an average of $13.90, according to an SEC filing.
The filing reports the shares as held indirectly, for example through a trust or a fund. The insider still holds 12,356,223 shares after the sale, 31% fewer than before.
The trade was reported within two business days, as Section 16 requires.
Figures come from the Form 4 filed with the SEC; the table lists the open-market rows this article covers.
| Company | MediaAlpha, Inc. (MAX) |
|---|---|
| Insider | White Mountains Insurance Group Ltd |
| Role | 10% owner |
| Transaction | Open-market sale (code S) |
| Shares | 5,500,391 |
| Average price | $13.90 |
| Value | $76,455,435 |
| Trade date | Nov 4, 2026 |
| Filed with the SEC | Nov 5, 2026, 9:04 PM ET |
| Shares held after | 12,356,223 |
| Ownership | Indirect |
| Rule 10b5-1 plan | Not marked in the filing |
Open the full breakdown of this MAX trade
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Source: SEC Form 4. Information only, not investment advice. Not affiliated with or endorsed by the U.S. Securities and Exchange Commission.
