Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| MAGNITE, INC.MGNI · Entity 2049 | CHIEF TECHNOLOGY OFFICER | September 14, 2026 | September 16, 2026 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
MAGNITE, INC.
Report date September 14, 2026 · Filed September 16, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 245,155 |
Reported balance
After 2026-09-14 transaction · row 1
1 source rowRow 1 · 2026-09-14 · Sale · Disposed 1,165 · Balance 245,155 F1: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 13, 2026. |
Filing footnotes · ownership attribution and instrument terms
F1: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 13, 2026.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| February 28, 2023 Filed Mar 2, 2023 21:30 UTC | MAGNITE, INC. MGNI · Entity 2049 | GrantCommon Stock | 46,873 | $0.00 | $0.00 |
DisclosureSEC source: 0001209191-23-014686 · doc4.xml · nonDerivative · entry 1 Buonasera David · CIK 0001966857 · Chief Technology Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 221,557 F1 · shares: Represents restricted stock units that vest as follows: 13,671 on May 15, 2024, 2,930 on each August 15, November 15, February 15 and May 15 thereafter until February 15, 2027 and 972 on May 15, 2027, subject to continued service to the Issuer through each vesting date. This equity grant may be subject to accelerated vesting in the event the Reporting Person's employment is terminated under certain circumstances. F2 · price: Equity grant under the Company's 2014 Equity Incentive Plan. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.