SEC Form 4 · accession 0001700262-26-000011
MAGNITE, INC. · MGNI
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Katie Seitz Evans
Officer — See Remarks
Period of report
Sep 8, 2026
Accepted (ET)
Sep 10, 2026 · 4:39 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 | Sep 8, 2026 | M | 13,546 | $5.16 | A | 499,182 | D | |
| Common StockF2 | Sep 8, 2026 | S | 32,285 | $23.63 | D | 466,897 | D | |
| Common StockF3 | Sep 9, 2026 | S | 11,100 | $23.46 | D | 455,797 | D |
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Employee Stock Option (Right to Buy)F5,F6,F4 | $5.16 | Sep 8, 2026 | M | 13,546 | D | — | Feb 27, 2029 | Common Stock | 13,546 | 0 | D |
Explanation of responses
- F1The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 8, 2026.
- F2The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $23.465 to $23.91, 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.
- F3The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $23.095 to $24.00, 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.
- F4The stock options have fully vested and are immediately exercisable.
- F5Granted as compensation for services.
- F6The amount reported in Column 9 reflects a correction to the number of derivative securities beneficially owned directly by the Reporting Person. A prior report inadvertently understated the number of derivative securities beneficially owned directly by the Reporting Person by 13,546 shares due to an administrative error. This correction does not reflect any purchase, sale or other transaction by the Reporting Person.
Remarks
President, Product & Operations