SEC Form 4 · accession 0001193125-26-274501
MAGNITE, INC. · MGNI
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Michael G. Barrett
Officer — CEO · Director
Period of report
Jun 15, 2026
Accepted (ET)
Jun 17, 2026 · 6:44 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 | Jun 15, 2026 | M | 178,596 | $5.80 | A | 581,670 | D | |
| Common StockF2 | Jun 15, 2026 | S | 178,596 | $16.59 | D | 403,074 | D | |
| Common Stock | Jun 16, 2026 | M | 100,000 | $5.80 | A | 503,074 | D | |
| Common Stock | Jun 16, 2026 | S | 100,000 | $17.50 | D | 403,074 | 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)F4,F3 | $5.80 | Jun 15, 2026 | M | 178,596 | D | — | Mar 17, 2027 | Common Stock | 178,596 | 507,564 | D |
| Employee Stock Option (Right to Buy)F4,F3 | $5.80 | Jun 16, 2026 | M | 100,000 | D | — | Mar 17, 2027 | Common Stock | 100,000 | 407,564 | D |
Explanation of responses
- F1This exercise and subsequent sale were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 13, 2026.
- F2The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $15.945 to $16.93, 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 stock options have fully vested and are immediately exercisable.
- F4Granted as compensation for services.