Machine signal
Active cluster sell — 11 distinct insiders, $19.1M, window ends Sep 17, 2026.
Figures computed from official regulatory filings — .
Analysttarget 29.67 USD (+20%) · consensus 4.53/5 · 13 buy · 2 hold · 0 sell
Ownershipinsiders 1.14% · institutions 100.66% · short 9.0% of float
In USD · as of Oct 5, 2026
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Magnite, Inc., together with its subsidiaries, operates an independent omni-channel sell-side advertising platform in the United States and internationally. The company's platform offers applications and services for sellers of digital advertising inventory, or publishers that own and operate CTV channels, applications, websites, and other digital media properties to manage and monetize their inventory; and for buyers, including advertisers, agencies, agency trading desks, and demand side platforms to buy digital advertising inventory, as well as an independent marketplace that brings buyers and sellers together. It markets its solutions through sales teams that operate from various locations. Magnite, Inc. was formerly known as The Rubicon Project, Inc. and changed name to Magnite, Inc. in July 2020. The company was incorporated in 2007 and is headquartered in New York, New York.
Market information source · Oct 5, 2026
Periods recorded in the consulted sources. These do not certify the legal dates of name changes.
SEC company identity · Oct 5, 2026
Open-market timeline · full history
3 buys322 sells— close pricebar = usd volume, √ scaleclick a period to filter the table
| Insider | Type | Value · USD | Signals | Details |
|---|---|---|---|---|
| Sullivan Haas | Award | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Gephart Brian | Award | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Knopper Douglas S | Sell | $981.2K | Unusual size | SEC |
| Caine Paul | Sell | $198.8K | SEC |
| Buonasera David | Sell | $28K | SEC |
| Spillane Robert F | ExerciseD (derivative) | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Spillane Robert F | Sell | $246.2K | SEC |
| Spillane Robert F | Exercise | $53.6K | SEC |
| Saltz Aaron | Sell | $936.4K | Unusual size | SEC |
| Evans Katie Seitz | Sell | $335.9K | SEC |
| Caine Paul | Sell | $117.7K | SEC |
| Evans Katie Seitz | ExerciseD (derivative) | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Evans Katie Seitz | Sell | $260.4K | SEC |
| Evans Katie Seitz | Sell | $762.9K | SEC |
| Evans Katie Seitz | Exercise | $69.9K | SEC |
| Buonasera David | Sell | $125.8K | SEC |
| Buonasera David | Sell | $26.1K | SEC |
| Harden Sarah Patricia | Sell | $442.5K | SEC |
| Harden Sarah Patricia | Sell | $712.1K | SEC |
| Gephart Brian | Other | $93.7K | SEC |
| Caine Paul | Sell | $187.5K | SEC |
| Buckley Sean Patrick | Other | $289.7K | SEC |
| Evans Katie Seitz | Other | $277.1K | SEC |
| Buckley Sean Patrick | Sell | $69K | SEC |
| BARRETT MICHAEL G. | Other | $257.3K | SEC |