MGNICommunication ServicesMid-Cap
MAGNITE, INC. Insider Trading Activity
Every SEC Form 4 insider transaction reported for MAGNITE, INC. (MGNI), sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud Research Team · SEC Form 4 & insider trading data analysts
Last updated:
Quick Answer
Are MGNI insiders buying or selling?
MAGNITE, INC. insiders reported 3 open-market buys ($414.4K) and 287 sells ($128.7M) across 290 Form 4 filings — a net selling position of $128.3M.
Source: SEC EDGAR Form 4
Key Statistics (as of Jul 17, 2026)
Total Form 4 filings
290
SEC EDGAR
Insider filers
23
Insider buys (3)
$414.4K
Insider sells (287)
$128.7M
Insider sentiment
Net sellingNet insider flow of $128.3M in net selling.
Recent MGNI insider transactions
| Date | Insider | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jul 17, 2026 | Michael G. Barrett | CEO | Sale | 38.6K | $20.35 | $785.4K |
| Jul 14, 2026 | Paul Caine | Director | Sale | 5.0K | $20.64 | $103.2K |
| Jul 9, 2026 | David Buonasera | CHIEF TECHNOLOGY OFFICER | Sale | 1.2K | $21.00 | $25.7K |
| Jul 9, 2026 | Sean Patrick Buckley | President, Revenue & Market Strategy | Sale | 19.2K | $21.03 | $404.5K |
| Jul 2, 2026 | David Buonasera | CHIEF TECHNOLOGY OFFICER | Sale | 9.4K | $20.00 | $187.5K |
| Jul 1, 2026 | Michael G. Barrett | CEO | Sale | 75.0K | $19.50 | $1.5M |
| Jun 18, 2026 | Sean Patrick Buckley | President, Revenue & Market Strategy | Sale | 19.2K | $19.00 | $365.4K |
| Jun 17, 2026 | Douglas S Knopper | Director | Sale | 37.3K | $18.10 | $675.8K |
| Jun 17, 2026 | David Buonasera | CHIEF TECHNOLOGY OFFICER | Sale | 13.7K | $18.03 | $246.9K |
| Jun 17, 2026 | Michael G. Barrett | CEO | Sale | 278.6K | $16.92 | $4.7M |
| Jun 11, 2026 | Douglas S Knopper | Director | Sale | 10.8K | $15.73 | $169.3K |
| Jun 11, 2026 | David T. Pearson | Director | Sale | 10.8K | $15.65 | $168.5K |
| Jun 3, 2026 | David Buonasera | CHIEF TECHNOLOGY OFFICER | Sale | 1.4K | $15.00 | $21.1K |
| May 21, 2026 | Robert F Spillane | Director | Sale | 10.0K | $13.33 | $133.3K |
| Feb 18, 2026 | Adam Lee Soroca | CHIEF PRODUCT OFFICER | Sale | 21.5K | $12.00 | $258.3K |
| Dec 19, 2025 | Adam Lee Soroca | CHIEF PRODUCT OFFICER | Sale | 16.7K | $17.00 | $283.2K |
| Nov 26, 2025 | Sean Patrick Buckley | President, Revenue | Sale | 2.2K | $14.50 | $32.1K |
| Nov 21, 2025 | Robert F Spillane | Director | Sale | 12.5K | $14.22 | $177.8K |
| Nov 19, 2025 | Sean Patrick Buckley | President, Revenue | Sale | 4.4K | $13.36 | $59.1K |
| Nov 19, 2025 | Adam Lee Soroca | CHIEF PRODUCT OFFICER | Sale | 10.9K | $13.23 | $143.6K |
| Oct 28, 2025 | Paul Caine | Director | Sale | 5.0K | $20.00 | $100.0K |
| Sep 19, 2025 | Paul Caine | Director | Sale | 7.5K | $25.00 | $187.5K |
| Sep 19, 2025 | Aaron Saltz | CHIEF LEGAL OFFICER | Sale | 8.5K | $24.50 | $208.8K |
| Sep 17, 2025 | Aaron Saltz | CHIEF LEGAL OFFICER | Sale | 6.2K | $23.94 | $147.9K |
| Sep 12, 2025 | Paul Caine | Director | Sale | 5.0K | $23.60 | $118.0K |
Showing the 25 most recent of 290 Form 4 filings for MAGNITE, INC..
Most active MGNI insiders
- Adam Lee Soroca37 filings
- David Day35 filings
- Michael G. Barrett32 filings
- Aaron Saltz25 filings
- Katie Seitz Evans21 filings
Ask anything about MGNI insider activity
Use Trabud's AI agent to query MAGNITE, INC.'s Form 4 history in plain English — "Show me MGNI CEO purchases this year" or compare it against any other ticker.
Open the AI agentMGNI insider trading FAQ
Are MAGNITE, INC. insiders buying or selling?
Across 290 SEC Form 4 filings, MAGNITE, INC. (MGNI) insiders reported 3 open-market purchases totaling $414.4K and 287 sales totaling $128.7M. That is a net selling position of $128.3M.
How many insiders trade MGNI stock?
23 distinct insider filers — officers, directors, 10%+ owners, and investment groups filing jointly — have reported Form 4 transactions for MAGNITE, INC.. The most recent filing was accepted on Jul 17, 2026.
Where does Trabud get MGNI insider trading data?
All MGNI insider trading data comes directly from official SEC EDGAR Form 4 filings, which corporate insiders must submit within two business days of a transaction under Section 16(a) of the Securities Exchange Act of 1934.
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