20 Form 4 filings for MGNI between 2026-07-09 and 2026-08-18, from 10 filers. 13 discretionary (10 sales, 2 purchases), 7 routine grant or withholding filings. 3 of 20 state a filing-level total, summing to $2,094,837; the rest report only their largest transaction, so the true figure is higher. Prices ran $5 to $25.
| Filed | Filer | Role | Action | Shares largest txn | Price | Filing total | Txns |
|---|---|---|---|---|---|---|---|
| 2026-08-18 | Buonasera David | — | 8,102 | $24.73 | — | — | |
| 2026-08-18 | Evans Katie Seitz | — | 11,204 | $24.73 | — | — | |
| 2026-08-18 | Saltz Aaron | — | 5,627 | $24.73 | — | — | |
| 2026-08-18 | Gephart Brian | — | 3,789 | $24.73 | — | — | |
| 2026-08-18 | BARRETT MICHAEL G. | — | 10,404 | $24.73 | — | — | |
| 2026-08-18 | Day David | — | 14,170 | $24.73 | — | — | |
| 2026-08-18 | Caine Paul | sold | 7,500 | $25.00 | — | — | |
| 2026-08-18 | Buckley Sean Patrick | sold | 11,715 | $24.73 | $270,043 | 3 | |
| 2026-08-14 | Day David | gifted | 26,258 | — | — | — | |
| 2026-08-12 | Gephart Brian | sold | 12,479 | $24.68 | — | — | |
| 2026-08-12 | Lam Rachel | sold | 10,000 | $24.16 | — | — | |
| 2026-08-12 | Caine Paul | sold | 5,000 | $24.35 | — | — | |
| 2026-08-07 | Buckley Sean Patrick | sold | 47,942 | $25.09 | $1,645,316 | 3 | |
| 2026-08-07 | Knopper Douglas S | sold | 37,337 | $22.72 | — | — | |
| 2026-08-07 | Buonasera David | sold | 4,176 | $22.81 | $179,478 | 3 | |
| 2026-08-07 | Evans Katie Seitz | acquired | 20,000 | $5.16 | — | 2 | |
| 2026-08-07 | BARRETT MICHAEL G. | acquired | 293,968 | $5.80 | — | 2 | |
| 2026-07-14 | Caine Paul | sold | 5,000 | $20.64 | — | — | |
| 2026-07-09 | Buonasera David | CHIEF TECHNOLOGY OFFICER | sold | 1,224 | $21.00 | — | — |
| 2026-07-09 | Buckley Sean Patrick | sold | 19,233 | $21.03 | — | — | |
| 20 filings · 10 filers · disclosed totals only | $2,094,837 (3/20) | — | |||||