SEI INVESTMENTS CO — DEFA14A Filings
4 DEFA14A filings on record
This page lists all DEFA14A filings submitted to the SEC by SEI INVESTMENTS CO (SEIC), sorted by most recent first. Each row links to the full filing on EdgarLookup. SEI INVESTMENTS CO has filed 4 DEFA14A documents with the SEC since 2013. To view all SEC filings by SEI INVESTMENTS CO, see the full filings list.
All
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 |
|---|---|---|---|---|
| DEFA14A | ADDITIONAL DEFINITIVE PROXY SOLICITING MATERIALS | 0000350894-25-000074 | May 7, 2025 | — |
| DEFA14A | ADDITIONAL DEFINITIVE PROXY SOLICITING MATERIALS | 0000350894-20-000028 | May 14, 2020 | — |
| DEFA14A | ADDITIONAL DEFINITIVE PROXY SOLICITING MATERIALS | 0000350894-17-000025 | Apr 24, 2017 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0001036050-01-500649 | May 16, 2001 | — |