- Record ID
- 0000950157-26-001244
- Filed / recorded
- Nov 13, 2026, 2:39 PM UTC
- Added to OQRO
- Nov 13, 2026, 2:40 PM UTC
- Parser
- form4-xml-v2
- Data quality
- Verified: identifiers matched exactly
- Issuer
- MediaAlpha, Inc.
- Issuer CIK
- 1818383
- Ticker
- MAX
- Reporting person
- WHITE MOUNTAINS INSURANCE GROUP LTD
- Relationship
- 10% owner
- Security
- Class A Common Stock
- Table
- Non-derivative (Table I)
- Transaction date
- Nov 11, 2026
- Transaction code
- S
- Shares / units
- 1,130,000
- Price per share
- $14.15
- Acquired / disposed
- Disposed (D)
- Shares owned after
- 11,226,223
- Ownership form
- Indirect — See Footnote
- Amendment
- No