SEI Investments Company (SEIC)Insider sold ~$566K

~$566K

Approx. value · 5,483 sh @ $103.16

6.78M

Holds after · shares reported

Traded

Sep 30, 2026

Filed

Oct 1, 2026

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. Aug 3, 2026InsiderDirector sold ~$1.04M of SEIC shares in the open market
2. Aug 4, 2026Insider · Their largest sale since 2024Officer sold ~$2.62M of SEIC shares in the open market
3. Aug 5, 2026InsiderOfficer sold ~$532K of SEIC shares in the open market
4. Aug 28, 2026InsiderOfficer sold ~$4.18M of SEIC shares in the open market
5. Sep 1, 2026InsiderDirector sold ~$549K of SEIC shares in the open market
6. Sep 3, 2026InsiderCEO sold ~$4.15M of SEIC shares in the open market
7. Sep 22, 2026InsiderOfficer sold ~$247K of SEIC shares in the open market
8. Sep 29, 2026InsiderInsider sold ~$2.94M of SEIC shares in the open market
9. Sep 30, 2026 · this disclosureInsiderInsider sold ~$566K of SEIC 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 SEI Investments Company

For SEI Investments Company, OQRO holds 15 insider filings (SEC Form 4 or Form 144) and 7 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 SEIC page.

Other recent filings by WEST ALFRED P JR, Reporting person

• SEC Form 4 at SEI Investments Company (SEIC)Oct 1, 2026
• SEC Form 4 at SEI Investments Company (SEIC)Jun 29, 2026
• SEC Form 4 at SEI Investments Company (SEIC)Jun 29, 2026
• SEC Form 4 at SEI Investments Company (SEIC)Jun 29, 2026
• SEC Form 4 at SEI Investments Company (SEIC)Jun 29, 2026

The full history of WEST ALFRED P JR, Reporting person is on the profile page.

How this filing works

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

Other disclosures at SEI Investments Company

• SEC Form 4Oct 1, 2026
• SEC Form 4Sep 24, 2026
• SEC Form 4Sep 8, 2026
• SEC Form 4Sep 3, 2026
• SEC Form 4Sep 1, 2026
• SEC Form 13F-HRAug 14, 2026

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