SEIC - CIK 0000350894
SEI INVESTMENTS CO has filed 1,942 documents with the SEC 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.
| Filing | Type | Filed | Period covered |
|---|---|---|---|
| Major company event | 8-K | 2025-07-01 | 2025-06-30 |
| Employee plan annual report | 11-K | 2025-06-24 | 2024-12-31 |
| Major company event | 8-K | 2025-06-05 | 2025-06-05 |
| Insider trade | 4 | 2025-05-30 | 2025-05-28 |
| Insider sale notice | 144 | 2025-05-28 | - |
| Major company event | 8-K | 2025-05-28 | 2025-05-28 |
| Insider trade | 4 | 2025-05-16 | 2025-05-14 |
| Insider trade | 4 | 2025-05-16 | 2025-05-15 |
| Insider trade | 4 | 2025-05-16 | 2025-05-14 |
| Insider sale notice | 144 | 2025-05-15 | - |
| SCHEDULE 13G/A | - | 2025-05-15 | - |
| Insider sale notice | 144 | 2025-05-14 | - |
| Insider sale notice | 144 | 2025-05-14 | - |
| 13F-HR/A | - | 2025-05-14 | 2025-03-31 |
| Institutional holdings | 13F-HR | 2025-05-13 | 2025-03-31 |
| Proxy materials | DEFA14A | 2025-05-07 | - |
| Quarterly report | 10-Q | 2025-04-28 | 2025-03-31 |
| Major company event | 8-K | 2025-04-23 | 2025-04-23 |
| Annual report to shareholders | ARS | 2025-04-14 | 2024-12-31 |
| Proxy statement | DEF 14A | 2025-04-14 | 2025-05-28 |
| Insider trade | 4 | 2025-04-01 | 2025-03-31 |
| Insider trade | 4 | 2025-03-19 | 2025-03-18 |
| Major company event | 8-K | 2025-03-18 | 2025-03-18 |
| Insider trade | 4 | 2025-03-07 | 2025-03-05 |
| Insider trade | 4 | 2025-03-05 | 2025-03-03 |
| Insider trade | 4 | 2025-03-05 | 2025-03-03 |
| Insider sale notice | 144 | 2025-03-03 | - |
| Insider sale notice | 144 | 2025-03-03 | - |
| Major company event | 8-K | 2025-02-27 | 2025-02-27 |
| Major company event | 8-K | 2025-02-25 | 2025-02-25 |
| Annual report | 10-K | 2025-02-20 | 2024-12-31 |
| SCHEDULE 13G/A | - | 2025-02-12 | - |
| Institutional holdings | 13F-HR | 2025-02-11 | 2024-12-31 |
| Major company event | 8-K | 2025-01-29 | 2025-01-29 |
| Major company event (amended) | 8-K/A | 2025-01-17 | 2025-01-14 |
| Major company event | 8-K | 2025-01-14 | 2025-01-14 |
| Insider trade | 4 | 2025-01-03 | 2024-12-31 |
| Insider trade | 4 | 2025-01-02 | 2024-12-31 |
| Insider trade | 4 | 2024-12-17 | 2024-12-13 |
| Insider trade | 4 | 2024-12-16 | 2024-12-12 |
| Insider trade | 4 | 2024-12-16 | 2024-12-12 |
| Insider trade | 4 | 2024-12-16 | 2024-12-12 |
| Insider trade | 4 | 2024-12-16 | 2024-12-12 |
| Insider trade | 4 | 2024-12-16 | 2024-12-12 |
| Insider trade | 4 | 2024-12-16 | 2024-12-12 |
| Insider trade | 4 | 2024-12-16 | 2024-12-12 |
| Insider trade | 4 | 2024-12-16 | 2024-12-12 |
| Insider trade | 4 | 2024-12-16 | 2024-12-12 |
| Insider trade | 4 | 2024-12-16 | 2024-12-12 |
| Insider trade | 4 | 2024-12-16 | 2024-12-12 |