SEIC - Company ID 0000350894
SEI INVESTMENTS CO has filed 1,942 public company documents between 1995 and 2026. The most frequent type is insider trade (1,197 filings), alongside the regular cadence of annual reports, quarterly reports, and event disclosures every public company must make. Use the filters to focus on one filing type, or flip the sort to trace the company's history from its earliest paperwork.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.
| Type | Filing | Filed | Period covered | Open |
|---|---|---|---|---|
| SCHEDULE 13G/A | SCHEDULE 13G/A | 11mo ago2025-08-13 | - | View filing |
| 4 | Insider trade | 11mo ago2025-08-08 | 2025-08-07 | View filing |
| 4 | Insider trade | 11mo ago2025-08-06 | 2025-08-05 | View filing |
| 4 | Insider trade | 11mo ago2025-08-04 | 2025-07-31 | View filing |
| 144 | Insider sale notice | 11mo ago2025-07-31 | - | View filing |
| 4 | Insider trade | 11mo ago2025-07-30 | 2025-07-29 | View filing |
| 144 | Insider sale notice | 11mo ago2025-07-29 | - | View filing |
| 10-Q | Quarterly report | 11mo ago2025-07-28 | 2025-06-30 | View filing |
| 4 | Insider trade | 11mo ago2025-07-24 | 2025-07-22 | View filing |
| 3 | New insider ownership | 11mo ago2025-07-24 | 2025-07-22 | View filing |
| 4 | Insider trade | 11mo ago2025-07-24 | 2025-07-22 | View filing |
| 3 | New insider ownership | 11mo ago2025-07-24 | 2025-07-22 | View filing |
| 8-K | Major company event | 11mo ago2025-07-23 | 2025-07-23 | View filing |
| 8-K | Major company event | 11mo ago2025-07-22 | 2025-07-16 | View filing |
| 8-K | Major company event | 11mo ago2025-07-18 | 2025-07-17 | View filing |
| SCHEDULE 13G/A | SCHEDULE 13G/A | 12mo ago2025-07-16 | - | View filing |
| 8-K | Major company event | 1y ago2025-07-01 | 2025-06-30 | View filing |
| 11-K | Employee plan annual report | 1y ago2025-06-24 | 2024-12-31 | View filing |
| 8-K | Major company event | 1y ago2025-06-05 | 2025-06-05 | View filing |
| 4 | Insider trade | 1y ago2025-05-30 | 2025-05-28 | View filing |
| 144 | Insider sale notice | 1y ago2025-05-28 | - | View filing |
| 8-K | Major company event | 1y ago2025-05-28 | 2025-05-28 | View filing |
| 4 | Insider trade | 1y ago2025-05-16 | 2025-05-14 | View filing |
| 4 | Insider trade | 1y ago2025-05-16 | 2025-05-15 | View filing |
| 4 | Insider trade | 1y ago2025-05-16 | 2025-05-14 | View filing |
| 144 | Insider sale notice | 1y ago2025-05-15 | - | View filing |
| SCHEDULE 13G/A | SCHEDULE 13G/A | 1y ago2025-05-15 | - | View filing |
| 144 | Insider sale notice | 1y ago2025-05-14 | - | View filing |
| 144 | Insider sale notice | 1y ago2025-05-14 | - | View filing |
| 13F-HR/A | 13F-HR/A | 1y ago2025-05-14 | 2025-03-31 | View filing |
| 13F-HR | Institutional holdings | 1y ago2025-05-13 | 2025-03-31 | View filing |
| DEFA14A | Proxy materials | 1y ago2025-05-07 | - | View filing |
| 10-Q | Quarterly report | 1y ago2025-04-28 | 2025-03-31 | View filing |
| 8-K | Major company event | 1y ago2025-04-23 | 2025-04-23 | View filing |
| ARS | Annual report to shareholders | 1y ago2025-04-14 | 2024-12-31 | View filing |
| DEF 14A | Proxy statement | 1y ago2025-04-14 | 2025-05-28 | View filing |
| 4 | Insider trade | 1y ago2025-04-01 | 2025-03-31 | View filing |
| 4 | Insider trade | 1y ago2025-03-19 | 2025-03-18 | View filing |
| 8-K | Major company event | 1y ago2025-03-18 | 2025-03-18 | View filing |
| 4 | Insider trade | 1y ago2025-03-07 | 2025-03-05 | View filing |
| 4 | Insider trade | 1y ago2025-03-05 | 2025-03-03 | View filing |
| 4 | Insider trade | 1y ago2025-03-05 | 2025-03-03 | View filing |
| 144 | Insider sale notice | 1y ago2025-03-03 | - | View filing |
| 144 | Insider sale notice | 1y ago2025-03-03 | - | View filing |
| 8-K | Major company event | 1y ago2025-02-27 | 2025-02-27 | View filing |
| 8-K | Major company event | 1y ago2025-02-25 | 2025-02-25 | View filing |
| 10-K | Annual report | 1y ago2025-02-20 | 2024-12-31 | View filing |
| SCHEDULE 13G/A | SCHEDULE 13G/A | 1y ago2025-02-12 | - | View filing |
| 13F-HR | Institutional holdings | 1y ago2025-02-11 | 2024-12-31 | View filing |
| 8-K | Major company event | 1y ago2025-01-29 | 2025-01-29 | View filing |