Michael G. Barrett insider trades: Magnite (MGNI) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Michael reports to the SEC
Open-market buys and sales
33 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Aug 6, 2026 | MGNI | ↓ Sell | 293,968 | $22.72 | $6.7M | Direct | Aug 7, 2026 (1d) |
| Jul 15, 2026 | MGNI | ↓ Sell | 38,596 | $20.35 | $785K | Direct | Jul 17, 2026 (2d) |
| Jun 29, 2026 | MGNI | ↓ Sell | 75,000 | $19.50 | $1.5M | Direct | Jul 1, 2026 (2d) |
| Jun 16, 2026 | MGNI | ↓ Sell | 278,596 | $16.92 | $4.7M | Direct | Jun 17, 2026 (1d) |
| Aug 18, 2025 | MGNI | ↓ Sell | 35,951 | $23.85 | $857K | Direct | Aug 20, 2025 (2d) |
| Jul 15, 2025 | MGNI | ↓ Sell | 70,900 | $23.27 | $1.6M | Direct | Jul 17, 2025 (2d) |
| Jun 24, 2025 | MGNI | ↓ Sell | 300,000 | $20.01 | $6.0M | Direct | Jun 26, 2025 (2d) |
| Jun 18, 2025 | MGNI | ↓ Sell | 75,000 | $18.26 | $1.4M | Direct | Jun 18, 2025 (0d) |
| Dec 4, 2024 | MGNI | ↓ Sell | 147,996 | $17.52 | $2.6M | Direct | Dec 6, 2024 (2d) |
| Nov 25, 2024 | MGNI | ↓ Sell | 27,004 | $17.63 | $476K | Direct | Nov 27, 2024 (2d) |
| Nov 15, 2024 | MGNI | ↓ Sell | 100,000 | $16.14 | $1.6M | Direct | Nov 19, 2024 (4d) |
| Nov 11, 2024 | MGNI | ↓ Sell | 25,000 | $15.00 | $375K | Direct | Nov 13, 2024 (2d) |
| Aug 15, 2024 | MGNI | ↓ Sell | 75,000 | $12.63 | $947K | Direct | Aug 16, 2024 (1d) |
| Jul 15, 2024 | MGNI | ↓ Sell | 100,000 | $15.00 | $1.5M | Direct | Jul 17, 2024 (2d) |
| May 15, 2024 | MGNI | ↓ Sell | 75,000 | $9.02 | $677K | Direct | May 17, 2024 (2d) |
| Mar 15, 2024 | MGNI | ↓ Sell | 75,000 | $11.21 | $841K | Direct | Mar 18, 2024 (3d) |
| Nov 15, 2023 | MGNI | ↓ Sell | 75,000 | $7.80 | $585K | Direct | Nov 17, 2023 (2d) |
| Aug 16, 2023 | MGNI | ↓ Sell | 35,869 | $8.31 | $298K | Direct | Aug 18, 2023 (2d) |
| Aug 15, 2023 | MGNI | ↓ Sell | 75,000 | $8.52 | $639K | Direct | Aug 17, 2023 (2d) |
| Jul 11, 2023 | MGNI | ↓ Sell | 25,000 | $15.02 | $376K | Direct | Jul 13, 2023 (2d) |
| May 31, 2023 | MGNI | ↓ Sell | 75,000 | $11.69 | $877K | Direct | Jun 2, 2023 (2d) |
| May 16, 2023 | MGNI | ↓ Sell | 24,679 | $10.88 | $269K | Direct | May 18, 2023 (2d) |
| Mar 15, 2023 | MGNI | ↓ Sell | 75,000 | $8.39 | $629K | Direct | Mar 17, 2023 (2d) |
| Nov 15, 2022 | MGNI | ↓ Sell | 75,000 | $11.58 | $868K | Direct | Nov 17, 2022 (2d) |
| Aug 16, 2021 | MGNI | ↓ Sell | 81,341 | $27.81 | $2.3M | Direct | Aug 18, 2021 (2d) |
| May 17, 2021 | MGNI | ↓ Sell | 105,138 | $25.98 | $2.7M | Direct | May 19, 2021 (2d) |
| Apr 5, 2021 | MGNI | ↓ Sell | 75,000 | $39.88 | $3.0M | Direct | Apr 7, 2021 (2d) |
| Nov 16, 2020 | MGNI | ↓ Sell | 95,053 | $11.06 | $1.1M | Direct | Nov 18, 2020 (2d) |
| May 20, 2020 | RUBI | ↓ Sell | 128,213 | $5.26 | $674K | Direct | May 20, 2020 (0d) |
| Nov 18, 2019 | RUBI | ↓ Sell | 83,395 | $7.57 | $631K | Direct | Nov 19, 2019 (1d) |
| May 16, 2019 | RUBI | ↓ Sell | 89,435 | $6.18 | $553K | Direct | May 17, 2019 (1d) |
| Aug 7, 2018 | RUBI | ↑ Buy | 100,000 | $3.42 | $342K | Direct | Aug 8, 2018 (1d) |
| May 13, 2014 | MM | ↑ Buy | 291,000 | $3.45 | $1.0M | Direct | May 13, 2014 (0d) |
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 Michael G. Barrett's insider trades
Michael G. Barrett is CEO at Magnite (MGNI). Since May 13, 2014, Michael has reported 2 open-market purchases worth $1.3M and 31 sales worth $48.0M on SEC Form 4. In the last 12 months: 4 sales ($13.6M).
Their filings also include shares withheld for taxes (24 filings), grants and awards (17 filings), option exercises (8 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.