Form 4 for MGNI MAGNITE, INC.
Accepted 2026-01-12 00:00:00 ET · period of report 2026-01-09 · accession 0001966857-26-000003 · 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2026-01-12 | 2026-01-09 | MGNI | Buonasera David | CTO | M - OptEx | $0.00 | +22.9K | 331.6K | +7% | $0 |
| D | 2026-01-12 | 2026-01-09 | MGNI | Buonasera David | CTO | F - Tax | $16.17 | -12.3K | 319.2K | -4% | -$199.4K |
| D | 2026-01-12 | 2026-01-09 | MGNI | Buonasera David | CTO | M - OptEx | $0.00 | -22.9K | 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 | 2026-01-09 | M | A | 22,935 | $0.00 | 331,562 | D | — | — | (F1) Equity grant under the Company's Amended and Restated 2014 Equity Incentive Plan. |
| 2 | Common | Common Stock | 2026-01-09 | F | D | 12,330 | $16.17 | 319,232 | D | — | — | |
| 3 | Derivative | Performance Stock Units | 2026-01-09 | M | D | 22,935 | $0.00 | 0 | D | — · — to — | 22,935 Common Stock | (F1) Equity grant under the Company's Amended and Restated 2014 Equity Incentive Plan. (F3) Each PSU represents a contingent right to receive, on vesting, one share of the Issuer's common stock, subject to Issuer performance as more specifically described in Footnote 4 herein. (F4) Vesting of the PSU was determined based on the Issuer's total stockholder return ("TSR") for the three-year period beginning on January 1, 2023 relative to the TSRs of the companies in the Russell 2000 index over that period. The number of PSUs reported in column 5 on the Form 4 filed with the Securities and Exchange Commission on March 2, 2023 reflected the target number of PSUs initially subject to the award. The award was eligible to vest as to 0% to 150% of the target number of PSUs. On January 9, 2026, the Compensation Committee of the Issuer's Board of Directors determined that, based on 126.35% achievement, the Reporting Person actually vested 22,935 shares. |