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MAX SCHEDULE 13D/A: Insider sale planned

Filed with the SEC on · accession 0000950157-26-001245

MAX filed a SCHEDULE 13D/A (schedule 13d/a) with the SEC on Nov 13, 2026. White Mountains Insurance Group and its subsidiary WM Hinson sold 1,130,000 Class A shares of MediaAlpha back to the issuer at $14.15 per share for approximately $16.0 million, reducing their beneficial ownership to about 22.55%. The stock moved -0.7% by the first close after the filing.

Summary of the filing

White Mountains Insurance Group and its subsidiary WM Hinson sold 1,130,000 Class A shares of MediaAlpha back to the issuer at $14.15 per share for approximately $16.0 million, reducing their beneficial ownership to about 22.55%. The sale was a private repurchase transaction intended to monetize a portion of their stake.

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Key details

Aggregate purchase price for 1,130,000 Class A shares repurchased by MediaAlpha from WM Hinson$16.0M
Per share repurchase price$14
Reporting person / sellerWhite Mountains Insurance Group, Ltd.
Reporting person / sellerWM Hinson (Bermuda) Ltd.
Issuer / buyerMediaAlpha, Inc.
Insider/shareholderJohn G. Sinkus

How MAX stock reacted

Close before

$14.81

Nov 12, 2026

First close after

-0.68%

$14.71

5 trading days

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Since filing

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Frequently asked questions

What did MAX file with the SEC on Nov 13, 2026?

MAX filed a SCHEDULE 13D/A (Insider sale planned). White Mountains Insurance Group and its subsidiary WM Hinson sold 1,130,000 Class A shares of MediaAlpha back to the issuer at $14.15 per share for approximately $16.0 million, reducing their beneficial ownership to about 22.55%. The sale was a private repurchase transaction intended to monetize a portion of their stake.

How do I read a SCHEDULE 13D/A?

A report the company filed with the SEC (the US market regulator). Start with the summary, then the key amounts and names. Compare it with the company’s earlier filings.

Why are SEC filings important?

Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A SCHEDULE 13D/A (schedule 13d/a): A report the company filed with the SEC (the US market regulator).

How did MAX stock react to this filing?

MAX closed at $14.81 before the filing and $14.71 on Nov 13, 2026 (-0.68%).

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