Activist & passive stakes
Investors crossing the 5% ownership line, from SEC Schedule 13D (activist) and 13G (passive) filings. Newest first.
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All filings, new and amended.1–3 of 3
- PassiveAmendment 6Nov 13, 202610th Lane Partners, LP28.4% · 53,160,730 shSEC
- ActivistAmendment 9Nov 13, 2026White Mountains Insurance Group, Ltd.22.6% · 11,226,223 shSEC
- ActivistAmendment 8Nov 6, 2026White Mountains Insurance Group, Ltd.24.3% · 12,356,223 shSEC
| Filing | Symbol | Holder | % Owned | Shares | Filed | SEC filing |
|---|---|---|---|---|---|---|
PassiveAmendment 6 | BMTM | 10th Lane Partners, LP in Bright Mountain Media, Inc. | 28.4% | 53,160,730 | Nov 13, 2026 | SEC |
ActivistAmendment 9 | MAX | White Mountains Insurance Group, Ltd. in MediaAlpha, Inc. | 22.6% | 11,226,223 | Nov 13, 2026 | SEC |
ActivistAmendment 8 | MAX | White Mountains Insurance Group, Ltd. in MediaAlpha, Inc. | 24.3% | 12,356,223 | Nov 6, 2026 | SEC |