David Buonasera insider trades: Magnite (MGNI) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where David reports to the SEC
Open-market buys and sales
23 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Nov 5, 2026 | MGNI | ↓ Sell | 5,706 | $27.25 | $155K | Direct | Nov 6, 2026 (1d) |
| Sep 14, 2026 | MGNI | ↓ Sell | 1,165 | $24.00 | $28K | Direct | Sep 16, 2026 (2d) |
| Sep 2, 2026 | MGNI | ↓ Sell | 6,414 | $23.68 | $152K | Direct | Sep 3, 2026 (1d) |
| Aug 6, 2026 | MGNI | ↓ Sell | 7,649 | $23.46 | $179K | Direct | Aug 7, 2026 (1d) |
| Jul 7, 2026 | MGNI | ↓ Sell | 1,224 | $21.00 | $26K | Direct | Jul 9, 2026 (2d) |
| Jul 1, 2026 | MGNI | ↓ Sell | 9,376 | $20.00 | $188K | Direct | Jul 2, 2026 (1d) |
| Jun 17, 2026 | MGNI | ↓ Sell | 13,699 | $18.03 | $247K | Direct | Jun 17, 2026 (0d) |
| Jun 1, 2026 | MGNI | ↓ Sell | 1,409 | $15.00 | $21K | Direct | Jun 3, 2026 (2d) |
| Sep 3, 2025 | MGNI | ↓ Sell | 2,950 | $25.37 | $75K | Direct | Sep 4, 2025 (1d) |
| Aug 18, 2025 | MGNI | ↓ Sell | 7,834 | $23.85 | $187K | Direct | Aug 20, 2025 (2d) |
| Jun 30, 2025 | MGNI | ↓ Sell | 9,289 | $22.00 | $204K | Direct | Jul 2, 2025 (2d) |
| May 27, 2025 | MGNI | ↓ Sell | 12,395 | $15.71 | $195K | Direct | May 28, 2025 (1d) |
| Dec 13, 2024 | MGNI | ↓ Sell | 1,969 | $16.31 | $32K | Direct | Dec 13, 2024 (0d) |
| Nov 27, 2024 | MGNI | ↓ Sell | 431 | $16.78 | $7K | Direct | Nov 27, 2024 (0d) |
| Nov 22, 2024 | MGNI | ↓ Sell | 9,219 | $17.00 | $157K | Direct | Nov 26, 2024 (4d) |
| Nov 18, 2024 | MGNI | ↓ Sell | 277 | $15.77 | $4K | Direct | Nov 19, 2024 (1d) |
| Nov 14, 2024 | MGNI | ↓ Sell | 12,412 | $16.41 | $204K | Direct | Nov 15, 2024 (1d) |
| Aug 15, 2024 | MGNI | ↓ Sell | 10,000 | $12.65 | $127K | Direct | Aug 16, 2024 (1d) |
| May 16, 2024 | MGNI | ↓ Sell | 5,500 | $12.50 | $69K | Direct | May 17, 2024 (1d) |
| Sep 6, 2023 | MGNI | ↓ Sell | 5,444 | $8.58 | $47K | Direct | Sep 7, 2023 (1d) |
| Aug 16, 2023 | MGNI | ↓ Sell | 2,648 | $8.31 | $22K | Direct | Aug 18, 2023 (2d) |
| Jul 3, 2023 | MGNI | ↓ Sell | 6,624 | $13.43 | $89K | Direct | Jul 6, 2023 (3d) |
| May 16, 2023 | MGNI | ↓ Sell | 1,559 | $10.88 | $17K | Direct | May 18, 2023 (2d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other MGNI insiders
Open-market trades in the last 12 months
About David Buonasera's insider trades
David Buonasera is Chief Technology Officer at Magnite (MGNI). Since May 16, 2023, David has reported no open-market purchases and 23 sales worth $2.4M on SEC Form 4. In the last 12 months: 8 sales ($996K).
Their filings also include shares withheld for taxes (12 filings), grants and awards (4 filings), option exercises (1 filing). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every MGNI insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.