Brian Gephart 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 Brian reports to the SEC
Open-market buys and sales
10 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Aug 10, 2026 | MGNI | ↓ Sell | 12,479 | $24.68 | $308K | Direct | Aug 12, 2026 (2d) |
| Sep 4, 2025 | MGNI | ↓ Sell | 27,671 | $24.71 | $684K | Direct | Sep 5, 2025 (1d) |
| Aug 18, 2025 | MGNI | ↓ Sell | 2,961 | $23.85 | $71K | Direct | Aug 20, 2025 (2d) |
| May 12, 2025 | MGNI | ↓ Sell | 6,334 | $16.16 | $102K | Direct | May 14, 2025 (2d) |
| Mar 3, 2025 | MGNI | ↓ Sell | 6,250 | $16.00 | $100K | Direct | Mar 5, 2025 (2d) |
| Nov 18, 2024 | MGNI | ↓ Sell | 2,156 | $15.60 | $34K | Direct | Nov 19, 2024 (1d) |
| Nov 11, 2024 | MGNI | ↓ Sell | 2,156 | $15.00 | $32K | Direct | Nov 13, 2024 (2d) |
| Jul 15, 2024 | MGNI | ↓ Sell | 16,166 | $15.00 | $242K | Direct | Jul 17, 2024 (2d) |
| Aug 16, 2023 | MGNI | ↓ Sell | 1,141 | $8.31 | $9K | Direct | Aug 18, 2023 (2d) |
| May 16, 2023 | MGNI | ↓ Sell | 1,237 | $10.88 | $13K | 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 Brian Gephart's insider trades
Brian Gephart is Chief Financial Officer at Magnite (MGNI). Since May 16, 2023, Brian has reported no open-market purchases and 10 sales worth $1.6M on SEC Form 4. In the last 12 months: 1 sale ($308K).
Their filings also include shares withheld for taxes (25 filings), grants and awards (11 filings), shares returned to the company (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.