SEI INVESTMENTS CO — All Filings
1,001 total filings on record
Public companies registered with the SEC are required to file periodic reports, disclosures, and notices throughout the year. The most important are the 10-K (annual report), 10-Q (quarterly report), and 8-K (material event notice). Use the filters below to narrow by form type.
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10-K
10-K/A
10-K405
10-Q
10-Q/A
11-K
13F-HR
13F-HR/A
144
3
3/A
4
4/A
5
5/A
8-A12B
8-A12G
8-K
8-K/A
ARS
CORRESP
DEF 14A
DEFA14A
DEFS14A
N-PX
NT 11-K
PRES14A
RW
S-8
SC 13D
SC 13D/A
SC 13G
SC 13G/A
SCHEDULE 13G/A
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| 10-Q | FORM 10-Q | 0000350894-25-000120 | Oct 27, 2025 | Sep 30, 2025 |
| 8-K | FORM 8-K | 0000350894-25-000115 | Oct 24, 2025 | Oct 20, 2025 |
| 8-K | FORM 8-K | 0000350894-25-000113 | Oct 22, 2025 | — |
| 4 | FORM 4 | 0001628280-25-043093 | Sep 29, 2025 | — |
| 144 | — | 0001921094-25-001209 | Sep 29, 2025 | — |
| 4 | FORM 4 | 0001628280-25-042654 | Sep 24, 2025 | Sep 23, 2025 |
| 144 | — | 0001921094-25-001196 | Sep 23, 2025 | — |
| 144 | — | 0001921094-25-001186 | Sep 22, 2025 | — |
| 8-K | FORM 8-K | 0000350894-25-000109 | Sep 18, 2025 | — |
| 4 | FORM 4 | 0002037087-25-000003 | Sep 17, 2025 | Sep 16, 2025 |
| N-PX | — | 0001135428-25-000138 | Aug 25, 2025 | Jun 30, 2025 |
| 4 | FORM 4 | 0001799975-25-000004 | Aug 20, 2025 | Aug 19, 2025 |
| 144 | — | 0001921094-25-000989 | Aug 19, 2025 | — |
| 8-K | FORM 8-K | 0000350894-25-000106 | Aug 19, 2025 | Aug 18, 2025 |
| 13F-HR | — | 0001041062-25-000162 | Aug 14, 2025 | Jun 30, 2025 |
| SCHEDULE 13G/A | — | 0000312348-25-000027 | Aug 13, 2025 | — |
| 4 | FORM 4 | 0001628280-25-039348 | Aug 8, 2025 | Aug 7, 2025 |
| 4 | FORM 4 | 0001628280-25-038318 | Aug 6, 2025 | Aug 5, 2025 |
| 4 | FORM 4 | 0001628280-25-037338 | Aug 4, 2025 | Jul 31, 2025 |
| 144 | — | 0001921094-25-000854 | Jul 31, 2025 | — |
| 4 | FORM 4 | 0001628280-25-036685 | Jul 30, 2025 | Jul 29, 2025 |
| 144 | — | 0001921094-25-000843 | Jul 29, 2025 | — |
| 10-Q | FORM 10-Q | 0000350894-25-000104 | Jul 28, 2025 | Jun 30, 2025 |
| 3 | FORM 3 | 0001628280-25-035889 | Jul 24, 2025 | Jul 22, 2025 |
| 4 | FORM 4 | 0001628280-25-035891 | Jul 24, 2025 | Jul 22, 2025 |
| 3 | FORM 3 | 0000350894-25-000099 | Jul 24, 2025 | Jul 22, 2025 |
| 4 | FORM 4 | 0000350894-25-000101 | Jul 24, 2025 | Jul 22, 2025 |
| 8-K | FORM 8-K | 0000350894-25-000097 | Jul 23, 2025 | — |
| 8-K | FORM 8-K | 0000350894-25-000095 | Jul 22, 2025 | Jul 16, 2025 |
| 8-K | FORM 8-K | 0000350894-25-000092 | Jul 18, 2025 | Jul 17, 2025 |
| SCHEDULE 13G/A | — | 0002052113-25-002545 | Jul 16, 2025 | — |
| 8-K | FORM 8-K | 0000350894-25-000088 | Jul 1, 2025 | Jun 30, 2025 |
| 11-K | FORM 11-K | 0000350894-25-000084 | Jun 24, 2025 | Dec 31, 2024 |
| 8-K | FORM 8-K | 0000350894-25-000078 | Jun 5, 2025 | — |
| 4 | FORM 4 | 0001628280-25-028520 | May 30, 2025 | May 28, 2025 |
| 8-K | FORM 8-K | 0000350894-25-000076 | May 28, 2025 | — |
| 144 | — | 0001968582-25-000402 | May 28, 2025 | — |
| 4 | FORM 4 | 0001628280-25-026202 | May 16, 2025 | May 14, 2025 |
| 4 | FORM 4 | 0001628280-25-026154 | May 16, 2025 | May 15, 2025 |
| 4 | FORM 4 | 0001628280-25-026152 | May 16, 2025 | May 14, 2025 |
| SCHEDULE 13G/A | — | 0000312348-25-000022 | May 15, 2025 | — |
| 144 | — | 0001921094-25-000502 | May 15, 2025 | — |
| 13F-HR/A | — | 0001041062-25-000106 | May 14, 2025 | Mar 31, 2025 |
| 144 | — | 0001921094-25-000494 | May 14, 2025 | — |
| 144 | — | 0001921094-25-000495 | May 14, 2025 | — |
| 13F-HR | — | 0001041062-25-000093 | May 13, 2025 | Mar 31, 2025 |
| DEFA14A | ADDITIONAL DEFINITIVE PROXY SOLICITING MATERIALS | 0000350894-25-000074 | May 7, 2025 | — |
| 10-Q | FORM 10-Q | 0000350894-25-000071 | Apr 28, 2025 | Mar 31, 2025 |
| 8-K | FORM 8-K | 0000350894-25-000065 | Apr 23, 2025 | — |
| ARS | ARS | 0000350894-25-000062 | Apr 14, 2025 | Dec 31, 2024 |