Form 4 for MGNI MAGNITE, INC.
Accepted 2026-08-07 17:06:14 ET · period of report 2026-08-06 · accession 0001700262-26-000007 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DT | 2026-08-07 17:06 | 2026-08-06 | MGNI | Evans Katie Seitz | See Remarks | M - OptEx | $5.16 | +20.0K | 516.8K | +4% | +$103.2K |
| DT | 2026-08-07 17:06 | 2026-08-06 | MGNI | Evans Katie Seitz | See Remarks | S - Sale+OE | $24.00 | -20.0K | 496.8K | -4% | -$480.0K |
| DT | 2026-08-07 17:06 | 2026-08-06 | MGNI | Evans Katie Seitz | See Remarks | M - OptEx | $0.00 | -20.0K | 0 | -100% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2026-08-06 | M | A | 20,000 | $5.16 | 516,840 | D | — | — | (F1) This exercise and subsequent sale were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 28, 2025. |
| 2 | Common | Common Stock | 2026-08-06 | S | D | 20,000 | $24.00 | 496,840 | D | — | — | (F1) This exercise and subsequent sale were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 28, 2025. |
| 3 | Derivative | Employee Stock Option (Right to Buy) | 2026-08-06 | M | D | 20,000 | $0.00 | 0 | D | $5.16 · — to 2029-02-27 | 20,000 Common Stock | (F1) This exercise and subsequent sale were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 28, 2025. (F3) Granted as compensation for services. (F2) The stock options have fully vested and are immediately exercisable. |