SEC Form 4 · accession 0001603808-26-000005
MAGNITE, INC. · MGNI
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Robert F Spillane
Director
Period of report
Sep 14, 2026
Accepted (ET)
Sep 16, 2026 · 4:20 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001595974
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common Stock | Sep 14, 2026 | M | 10,363 | $5.17 | A | 68,078 | D | |
| Common StockF1 | Sep 14, 2026 | S | 10,363 | $23.76 | D | 57,715 | 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 | $5.17 | Sep 14, 2026 | M | 10,363 | D | — | May 23, 2027 | Common Stock | 10,363 | 0 | D |
Explanation of responses
- F1The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $23.75 to $23.7901, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote to this Form 4.
- F2The stock options have fully vested and are immediately exercisable.
- F3Granted as compensation for services.