Magnite, Inc.
Could not find a ticker for this position, may be a filing error
A maker of software that automates the buying and selling of digital ad space, Magnite runs one of the world's largest marketplaces for connected TV advertising, with tools like SpringServe and ClearLine serving publishers and advertisers. Born from the 2020 merger of Rubicon Project and Telaria, it took its name from the mineral magnetite, a nod to the way its platform magnetically draws together buyers and sellers. Its roots trace to 2007, when Rubicon Project's founders set out to build an automated stock exchange for ad impressions.
Granted 1.30M · Sold 1.85M
Granted 682.6K · Sold 361.2K
Granted 964.4K · Sold 388.2K
Granted 610.4K · Sold 354.5K
Granted 720.5K · Sold 249.1K
Granted 304.1K · Sold 103.7K
Granted 371.7K · Sold 177.8K
Granted 68.9K · Bought 7.5K · Sold 15.0K
Granted 96.8K
Granted 68.9K · Sold 45.0K
Granted 68.9K
Granted 68.9K · Sold 48.1K
Granted 30.2K
Granted 206.2K · Sold 66.1K
Granted 16.5K · Sold 5.8K
Granted 104.9K · Sold 286.9K
Granted 101.3K · Sold 20.0K
Granted 101.3K · Sold 22.3K
Granted 68.9K · Sold 100.0K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Barrett Michael G.CEO, Director · 53 transactions | -66% | 503.1K | 1.30M | — | 1.85M |
| Evans Katie SeitzPresident, Operations · 49 transactions | +18.6% | 496.8K | 682.6K | — | 361.2K |
| Day DavidCHIEF FINANCIAL OFFICER · 52 transactions | +83.8% | 493.3K | 964.4K | — | 388.2K |
| Soroca Adam LeeCHIEF PRODUCT OFFICER · 55 transactions | +15.8% | 388.4K | 610.4K | — | 354.5K |
| Buckley Sean PatrickSee Remarks · 45 transactions | +241.8% | 373.5K | 720.5K | — | 249.1K |
| Prusz Joseph RChief Revenue Officer, DV+ · 2 transactions | -5% | 311.1Kas of Feb 2022 | — | — | — |
| Buonasera DavidCHIEF TECHNOLOGY OFFICER · 37 transactions | — | 279.1K | 304.1K | — | 103.7K |
| Saltz AaronCHIEF LEGAL OFFICER · 46 transactions | +4.5% | 270.0K | 371.7K | — | 177.8K |
| Lam RachelDirector · 9 transactions | +34.2% | 240.6K | 68.9K | 7.5K | 15.0K |
| Dove James AllenChief Technology Officer · 4 transactions | +74.8% | 191.1Kas of Aug 2022 | 96.8K | — | — |
| Caine PaulDirector · 14 transactions | +16.6% | 167.4K | 68.9K | — | 45.0K |
| Harden Sarah PatriciaDirector · 5 transactions | +72.6% | 163.7K | 68.9K | — | — |
| Knopper Douglas SDirector · 7 transactions | +19.8% | 125.8K | 68.9K | — | 48.1K |
| Frankenberg Robert JDirector · 2 transactions | +34% | 119.1Kas of Jun 2023 | 30.2K | — | — |
| Gephart BrianCHIEF ACCOUNTING OFFICER · 27 transactions | +549.2% | 118.6K | 206.2K | — | 66.1K |
| Troe Lisa LDirector · 2 transactions | +21.4% | 114.2Kas of Jun 2023 | 16.5K | — | 5.8K |
| Rossman JamesDirector · 8 transactions | -62.9% | 107.5K | 104.9K | — | 286.9K |
| Yu DianeDirector · 7 transactions | — | 81.3K | 101.3K | — | 20.0K |
| Pearson David T.Director · 8 transactions | — | 79.0K | 101.3K | — | 22.3K |
| Spillane Robert FDirector · 11 transactions | -35% | 57.7K | 68.9K | — | 100.0K |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over the last 5 years: -4.08M shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.