{"transactions":[{"id":1522591,"issuer":{"id":1093,"kind":"organization","name":"MediaAlpha, Inc.","symbol":"MAX"},"owners":[{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD","position":1,"cik":"0000776867","reported_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":91303,"kind":"organization","name":"WM Hinson (Bermuda) Ltd.","position":2,"cik":"0001979065","reported_name":"WM Hinson (Bermuda) Ltd.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2024-05-09T21:04:25.000Z","date":"2024-05-07","kind":"sale","planned":false,"acquired":false,"shares":5000200,"price":19,"value":95003800.0,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"On May 7, 2024, WM Hinson (Bermuda) Ltd. sold 5,000,200 shares of Class A common stock of MediaAlpha, Inc. as a selling stockholder in an underwritten public secondary offering at a price to the public of $19.00 per share. 652,200 of such shares of Class A common stock were sold pursuant to the option granted to the underwriters by the selling stockholders, which was exercised in full prior to the closing."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Includes 900,000 shares of Class A common stock owned directly by White Mountains Insurance Group, Ltd. and 16,956,614 shares of Class A common stock owned directly by WM Hinson (Bermuda) Ltd., a wholly owned subsidiary of White Mountains Insurance Group, Ltd. White Mountains Insurance Group, Ltd. has indirect pecuniary interest in the securities held by WM Hinson (Bermuda) Ltd. Consequently, White Mountains Insurance Group, Ltd. is deemed to beneficially own the securities held directly by WM Hinson (Bermuda) Ltd. The board of directors and senior officers of White Mountains Insurance Group, Ltd. disclaim beneficial ownership with respect to such securities."}],"balance_after":17856614,"source":{"system":"sec-edgar","filing":"0001062993-24-009800","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299324009800/form4.xml","form_type":"4"}},{"id":1841588,"issuer":{"id":1093,"kind":"organization","name":"MediaAlpha, Inc.","symbol":"MAX"},"owners":[{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD","position":1,"cik":"0000776867","reported_name":"WHITE MOUNTAINS INSURANCE GROUP LTD","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":91303,"kind":"organization","name":"WM Hinson (Bermuda) Ltd.","position":2,"cik":"0001979065","reported_name":"WM Hinson (Bermuda) Ltd.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2023-06-30T12:13:48.000Z","date":"2023-06-30","kind":"purchase","planned":false,"acquired":true,"shares":5916816,"price":10,"value":59168160.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On June 30, 2023, White Mountains Insurance Group, Ltd. (\"WMIG\"), through its wholly-owned, direct subsidiary, WM Hinson (Bermuda) Ltd. (\"WM Hinson\"), accepted for purchase shares of the class A common stock of MediaAlpha, Inc. (\"Shares\") through a fixed-price tender offer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"WMIG owns 900,000 Shares directly and owns 21,956,814 Shares indirectly.  Of the Shares owned indirectly by WMIG, 5,916,816 Shares are owned directly by WMIG's direct subsidiary, WM Hinson, and 16,039,998 Shares are held directly by White Mountains Investments (Luxembourg) S.a' r.l., a direct subsidiary of WM Birkdale, Ltd., a direct subsidiary of WMIG."}],"balance_after":22856814,"source":{"system":"sec-edgar","filing":"0001062993-23-014208","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299323014208/form4.xml","form_type":"4"}}]}