SEC Form 4 · accession 0001865116-26-000007
MAGNITE, INC. · MGNI
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Sean Patrick Buckley
Officer — See Remarks
Period of report
Aug 6, 2026
Accepted (ET)
Aug 7, 2026 · 5:14 pm EDT
Rule 10b5-1 plan
yes — trade under a plan
Issuer CIK
0001595974
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common Stock | Aug 6, 2026 | M | 28,703 | $13.90 | A | 382,984 | D | |
| Common Stock | Aug 6, 2026 | S | 47,942 | $25.09 | D | 335,042 | D | |
| Common Stock | Aug 6, 2026 | S | 19,237 | $23.00 | D | 315,805 | D |
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Stock Option (right to buy)F3,F2 | $13.90 | Aug 6, 2026 | M | 28,703 | D | — | Feb 1, 2032 | Common Stock | 28,703 | 57,405 | D |
Explanation of responses
- F1The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 10, 2025.
- F2The stock options have fully vested and are immediately exercisable.
- F3Granted as compensation for services.
Remarks
President, Revenue & Market Strategy