MNTN (MNTN)
Runs a connected-TV platform combining campaign activation, measurement, and ad-creative capabilities.
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13F · 13D/G · Form 4
| Institutions | ≈ 52.01% | 38.44M shares | |
|---|---|---|---|
| 134 holders · as of Jun 30, 2026 · largest filers plus last quarter's tail | |||
| Insiders | 28.86% | 21.34M shares | |
| 11 holders · as of Sep 8, 2026 | |||
| Strategic holders | 22.59% | 16.70M shares | |
| 3 holders · as of Aug 20, 2026 | |||
| Adds to | 103.46% | ||
73.92M company shares as of Sep 22, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing
This quarter's institutional total failed a plausibility check; shown: the largest filers plus last quarter's remainder.
These groups come from separate filings that can overlap, so they add to 103.46%; nothing is left for Other.
This company has 2 share classes; every stake here is a share of the whole company.
13F, as of Jun 30, 2026
134 holders · 38.44M shares · 54 new positions · 90 increased · 25 reduced · 19 closed
| Holder | Shares | % of company | Chg q/q | Filed |
|---|---|---|---|---|
| Mercato Management Legacy, LLC | 6.17M | 8.34% | 0 | Jul 28, 2026 |
| Wellington Management Group LLP | 5.63M | 7.62% | −578.7K | Aug 14, 2026 |
| BlackRock, Inc. | 4.26M | 5.76% | +4.00M | Aug 7, 2026 |
| FMR LLC | 3.14M | 4.25% | +317.2K | Aug 13, 2026 |
| Greycroft LP | 2.06M | 2.79% | 0 | Aug 14, 2026 |
| Vanguard Capital Management LLC | 1.92M | 2.60% | +481.8K | Aug 13, 2026 |
| D. E. Shaw & Co., Inc. | 1.16M | 1.57% | +681.4K | Aug 14, 2026 |
| Geode Capital Management, LLC | 838.6K | 1.13% | +693.8K | Aug 12, 2026 |
13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| Mark Douglas | 17.80% | 9.59M | 13G | Feb 17, 2026 |
| Mercato Partners Growth III GP, LLC | 12.80% | 6.17M | 13G | Aug 14, 2025 |
| Baroda Ventures LLC | 12.20% | 6.71M | 13G | Aug 14, 2025 |
| Wellington Management Group LLP | 10.90% | 6.21M | 13G | May 15, 2026 |
| MGD Holdings | 8.00% | 4.15M | 13G | Aug 14, 2025 |
| Peak Investment Holdings, LLC | 7.10% | 3.08M | 13G | Aug 14, 2025 |
| Greycroft Partners II, L.P. | 6.40% | 3.91M | 13G | May 15, 2026 |
| FMR LLC | 5.00% | 2.82M | 13G | May 6, 2026 |
Form 4
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Aug 18, 2026 | Baroda Ventures LLC10 percent owner | Sale | 275,115 | $12.75 | 6,375,543 |
| Aug 14, 2026 | Baroda Ventures LLC10 percent owner | Sale | 33,617 | $12.56 | 6,650,658 |
| Aug 13, 2026 | Baroda Ventures LLC10 percent owner | Sale | 26,823 | $12.53 | 6,684,275 |
| Dec 3, 2025 | Hadi Partovidirector | Sale | 86,665 | $13.39 | 0 |
| Dec 2, 2025 | Hadi Partovidirector | Sale | 168,257 | $13.39 | 86,665 |
| Dec 1, 2025 | Hadi Partovidirector | Sale | 192,598 | $13.46 | 254,922 |
House and Senate disclosures
Not reported.