Magnite (MGNI)CEO sold ~$799K

~$799K

Approx. value · 45K sh @ $17.76

687K

Holds after · shares reported

Traded

Jun 16, 2025

Filed

Jun 18, 2025

The story around this disclosure

Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.

1. May 12, 2025InsiderOfficer sold ~$102K of MGNI shares in the open market
2. May 16, 2025Insider · 2 peopleInsiders: 2 sales (~$331K)
3. May 20, 2025InsiderOfficer sold ~$142K of MGNI shares in the open market
4. May 23, 2025InsiderOfficer sold ~$55K of MGNI shares in the open market
5. May 27, 2025InsiderOfficer sold ~$140K of MGNI shares in the open market
6. Jun 4, 2025InsiderOfficer sold ~$256K of MGNI shares in the open market
7. Jun 5, 2025InsiderOfficer sold ~$608K of MGNI shares in the open market
8. Jun 6, 2025Insider · 2 peopleInsiders: 2 sales (~$350K)
9. Jun 10, 2025InsiderDirector sold ~$264K of MGNI shares in the open market
10. Jun 16, 2025 · this disclosureInsiderCEO sold ~$799K of MGNI shares in the open market

What came next

1. Jun 16, 2025Insider · 2 peopleInsiders: 2 sales (~$664K)
2. Jun 18, 2025Insider · 3 peopleInsiders: 3 sales (~$3.9M)
3. Jun 24, 2025Insider · 4 peopleInsiders: 4 sales (~$7.7M)
4. Jun 26, 2025InsiderCFO sold ~$754K of MGNI shares in the open market
5. Jun 30, 2025Insider · 4 peopleInsiders: 5 sales (~$1.6M)
6. Jul 3, 2025InsiderOfficer sold ~$1.06M of MGNI shares in the open market
7. Jul 10, 2025InsiderDirector sold ~$118K of MGNI shares in the open market
8. Jul 15, 2025InsiderCEO sold ~$1.65M of MGNI shares in the open market
9. Aug 11, 2025InsiderDirector sold ~$111K of MGNI shares in the open market
10. Aug 12, 2025InsiderDirector sold ~$334K of MGNI shares in the open market
11. Aug 14, 2025InsiderOfficer sold ~$323K of MGNI shares in the open market
12. Aug 18, 2025Insider · 8 peopleInsiders: 8 sales (~$2.3M)
13. Aug 19, 2025Insider · 2 peopleInsiders: 2 sales (~$466K)
14. Aug 25, 2025Insider · 2 peopleInsiders: 2 sales (~$404K)
15. Aug 26, 2025InsiderDirector sold ~$505K of MGNI shares in the open market
16. Aug 27, 2025InsiderOfficer sold ~$549K of MGNI shares in the open market
17. Aug 29, 2025InsiderOfficer sold ~$323K of MGNI shares in the open market
18. Aug 31, 2025Company filing · Form 8-K · Material agreementSigned an important agreement
19. Sep 2, 2025Insider · 1 personInsiders: 2 sales (~$617K)
20. Sep 3, 2025InsiderOfficer sold ~$75K of MGNI shares in the open market

How to read SEC Form 4

Form 4 is the filing that officers, directors and owners of more than 10% of a US-listed company must send to the SEC within two business days after they buy, sell or otherwise change their holding of the company's stock.

Full guide: What is an SEC Form 4?

What else is on file for Magnite

For Magnite, OQRO holds 2 fund holdings reports (13F) dated in the last 90 days.

These are records OQRO holds, counted by their date, not a measure of how much trading took place. Routine paperwork such as option exercises and tax withholding is left out. Everything for the company is on its MGNI page.

Other recent filings by Michael G. Barrett, CEO

• SEC Form 4 at Magnite (MGNI)Aug 20, 2025
• SEC Form 4 at Magnite (MGNI)Jul 17, 2025
• SEC Form 4 at Magnite (MGNI)Jun 26, 2025
• SEC Form 4 at Magnite (MGNI)Jun 18, 2025
• SEC Form 4 at Magnite (MGNI)Dec 6, 2024

The full history of Michael G. Barrett, CEO is on the profile page.

How this filing works

• SEC Form 4
• Open-market purchase
• Rule 10b5-1 trading plans

Other disclosures at Magnite

• SEC Form 13F-HRAug 14, 2026
• SEC Form 13F-HRAug 14, 2026
• SEC Form 13F-HRMay 15, 2026
• SEC Form 13F-HRMay 15, 2026
• SEC Form 13F-HRMay 13, 2026
• SEC Form 13F-HRFeb 17, 2026

Everything OQRO holds on this company is on its MGNI page.