Magnite, Inc (MGNI) insider trading
Every open-market stock purchase and sale by Magnite, Inc executives, directors, large shareholders and members of Congress, from SEC Form 4 filings. Sector: Other.
Insider activity at a glance
- Michael G. Barrett (CEO) and 10 others sold $16.1M in the last 90 days.
- Last insider buy: Rachel Lam (Director), $22.5K, 4 years ago.
Last 12 months: insiders bought $0 (0 buys) and sold $23.7M (35 sales). Last close $25.15 on Sep 18, 2026.
Recent MGNI insider trades
| Date | Insider | Trade | Value |
|---|---|---|---|
| Sep 17, 2026 | Douglas S Knopper (Director) | Sold | $981K |
| Sep 17, 2026 | Paul Caine (Director) | Sold | $199K |
| Sep 14, 2026 | Robert F Spillane (Director) | Sold | $246K |
| Sep 14, 2026 | David Buonasera (CTO) | Sold | $28K |
| Sep 14, 2026 | Robert F Spillane (Director) | Bought (not open market) | — |
| Sep 11, 2026 | Katie Seitz Evans (Officer) | Sold | $336K |
| Sep 10, 2026 | Aaron Saltz (C-suite exec) | Sold | $936K |
| Sep 10, 2026 | Paul Caine (Director) | Sold | $118K |
| Sep 9, 2026 | Katie Seitz Evans (Officer) | Sold | $260K |
| Sep 8, 2026 | Katie Seitz Evans (Officer) | Sold | $763K |
| Sep 8, 2026 | Katie Seitz Evans (Officer) | Bought (not open market) | — |
| Sep 2, 2026 | David Buonasera (CTO) | Sold | $26.1K |
| Sep 1, 2026 | David Buonasera (CTO) | Sold | $126K |
| Aug 28, 2026 | Sarah Patricia Harden (Director) | Sold | $442K |
| Aug 26, 2026 | Sarah Patricia Harden (Director) | Sold | $712K |
| Aug 18, 2026 | Sean Patrick Buckley (Officer) | Sold | $69K |
| Aug 17, 2026 | Sean Patrick Buckley (Officer) | Sold | $201K |
| Aug 15, 2026 | David Day (CFO) | Sold (not open market) | $350K |
| Aug 15, 2026 | Sean Patrick Buckley (Officer) | Sold (not open market) | $290K |
| Aug 15, 2026 | Katie Seitz Evans (Officer) | Sold (not open market) | $277K |
| Aug 15, 2026 | Michael G. Barrett (CEO) | Sold (not open market) | $257K |
| Aug 15, 2026 | David Buonasera (CTO) | Sold (not open market) | $200K |
| Aug 15, 2026 | Aaron Saltz (C-suite exec) | Sold (not open market) | $139K |
| Aug 15, 2026 | Brian Gephart (C-suite exec) | Sold (not open market) | $93.7K |
| Aug 14, 2026 | Paul Caine (Director) | Sold | $188K |
Who's trading MGNI
- Paul Caine, Insider: sold $726K (5 sales), last Sep 17, 2026
- Douglas S Knopper, Insider: sold $2.7M (4 sales), last Sep 17, 2026
- David Buonasera, CTO: sold $627K (10 sales), last Sep 14, 2026
- Robert F Spillane, Insider: sold $557K (3 sales), last Sep 14, 2026
- Katie Seitz Evans, President: sold $1.8M (4 sales), last Sep 11, 2026
- Aaron Saltz, C-suite exec: sold $936K (1 sale), last Sep 10, 2026
- Sarah Patricia Harden, Insider: sold $1.2M (2 sales), last Aug 28, 2026
- Sean Patrick Buckley, President: sold $2.4M (7 sales), last Aug 18, 2026
- Michael G. Barrett, CEO: sold $11.4M (3 sales), last Aug 15, 2026
- David Day, CFO: other filings, last Aug 15, 2026
- Brian Gephart, C-suite exec: sold $308K (1 sale), last Aug 15, 2026
- Rachel Lam, Insider: sold $242K (1 sale), last Aug 10, 2026
- David T. Pearson, Insider: sold $168K (1 sale), last Jun 10, 2026
- James Rossman, Insider: other filings, last Jun 8, 2026
- Diane Yu, Insider: other filings, last Jun 8, 2026
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