MAGNITE INC (MGNI) — insider trading
Communication Services · NASDAQ
MAGNITE INC (MGNI) has 23 reported SEC Form 4 insider transactions in our data, including 13 open-market sales among the most recent 23 (latest 2026-07-15).
Recent Form 4 transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-07-15 | BARRETT MICHAEL G. | Director, Officer (CEO) | Option exercise / conversion (derivative) | 38,596 | $0.00 | $0 | Form 4 |
| 2026-07-15 | BARRETT MICHAEL G. | Director, Officer (CEO) | Open-market sale | 38,596 | $20.35 | $785.4K | Form 4 |
| 2026-07-15 | BARRETT MICHAEL G. | Director, Officer (CEO) | Option exercise / conversion | 38,596 | $5.80 | $223.9K | Form 4 |
| 2026-07-10 | Caine Paul | Director | Open-market sale | 5,000 | $20.64 | $103.2K | Form 4 |
| 2026-07-07 | Buckley Sean Patrick | Officer (See Remarks) | Open-market sale | 19,233 | $21.03 | $404.5K | Form 4 |
| 2026-07-07 | Buonasera David | Officer (CHIEF TECHNOLOGY OFFICER) | Open-market sale | 1,224 | $21.00 | $25.7K | Form 4 |
| 2026-07-01 | Buonasera David | Officer (CHIEF TECHNOLOGY OFFICER) | Open-market sale | 9,376 | $20.00 | $187.5K | Form 4 |
| 2026-06-29 | BARRETT MICHAEL G. | Director, Officer (CEO) | Option exercise / conversion (derivative) | 75,000 | $0.00 | $0 | Form 4 |
| 2026-06-29 | BARRETT MICHAEL G. | Director, Officer (CEO) | Open-market sale | 75,000 | $19.50 | $1.46M | Form 4 |
| 2026-06-29 | BARRETT MICHAEL G. | Director, Officer (CEO) | Option exercise / conversion | 75,000 | $5.80 | $435.0K | Form 4 |
| 2026-06-17 | Buckley Sean Patrick | Officer (See Remarks) | Open-market sale | 19,233 | $19.00 | $365.4K | Form 4 |
| 2026-06-17 | Buonasera David | Officer (CHIEF TECHNOLOGY OFFICER) | Open-market sale | 1,409 | $19.00 | $26.8K | Form 4 |
| 2026-06-16 | BARRETT MICHAEL G. | Director, Officer (CEO) | Option exercise / conversion (derivative) | 100,000 | $0.00 | $0 | Form 4 |
| 2026-06-16 | BARRETT MICHAEL G. | Director, Officer (CEO) | Open-market sale | 100,000 | $17.50 | $1.75M | Form 4 |
| 2026-06-16 | BARRETT MICHAEL G. | Director, Officer (CEO) | Option exercise / conversion | 100,000 | $5.80 | $580.0K | Form 4 |
| 2026-06-16 | Buonasera David | Officer (CHIEF TECHNOLOGY OFFICER) | Open-market sale | 11,233 | $18.00 | $202.2K | Form 4 |
| 2026-06-16 | Knopper Douglas S | Director | Open-market sale | 37,337 | $18.10 | $675.8K | Form 4 |
| 2026-06-15 | BARRETT MICHAEL G. | Director, Officer (CEO) | Option exercise / conversion (derivative) | 178,596 | $0.00 | $0 | Form 4 |
| 2026-06-15 | BARRETT MICHAEL G. | Director, Officer (CEO) | Open-market sale | 178,596 | $16.59 | $2.96M | Form 4 |
| 2026-06-15 | BARRETT MICHAEL G. | Director, Officer (CEO) | Option exercise / conversion | 178,596 | $5.80 | $1.04M | Form 4 |
| 2026-06-15 | Buonasera David | Officer (CHIEF TECHNOLOGY OFFICER) | Open-market sale | 1,057 | $17.00 | $18.0K | Form 4 |
| 2026-06-08 | Yu Diane | Director | Grant / award / vesting | 13,798 | $0.00 | $0 | Form 4 |
| 2026-06-08 | Caine Paul | Director | Grant / award / vesting | 13,798 | $0.00 | $0 | Form 4 |
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Transaction types are the SEC Form 4 codes: open-market purchases (P) and sales (S) are the only rows that reflect open-market conviction. Awards/vesting (A), option exercises (M/X/C), shares withheld for taxes (F) and gifts (G) are compensation or mechanical, not buying or selling on the open market. Sales may be planned and non-discretionary (e.g. a Rule 10b5-1 plan); open-market buying is not a recommendation to buy. Informational only — not financial advice.
Source: SEC EDGAR Form 3/4/5. See the full company profile: MAGNITE INC (MGNI).
Last updated 2026-07-15 (most recent filing date).
Informational only — NOT financial advice. Insider filings are sourced from SEC EDGAR and shown with their reported dates.