Sei Investments SEIC SEC Filings

NASDAQ SEIC
$102.29 -2.21 (-2.11%)
At close: Oct 23, 2026 · 4:00 PM EDT
EDGAR Disclosures

SEC Filings

Source SEC EDGAR

Every SEC filing Sei Investments Co (SEIC) has made, as reported on EDGAR — annual and quarterly reports, current reports, insider transactions and ownership disclosures. Filter by form group, form type or period, and open any filing or its index directly.

Form Type
# Form Type Form Group Accession Date Filing Index
18-KCurrent Report0000350894-26-000051Oct 21, 2026 12:06 AM
24Insider Transaction0000929638-26-003767Oct 1, 2026 12:05 AM
3144Insider Transaction0001968582-26-001019Sep 29, 2026 8:10 PM
44Insider Transaction0000929638-26-003634Sep 24, 2026 8:15 PM
5144Insider Transaction0001921094-26-001045Sep 22, 2026 8:14 PM
64Insider Transaction0000929638-26-003474Sep 8, 2026 8:05 PM
74Insider Transaction0000929638-26-003447Sep 3, 2026 8:09 PM
8144Insider Transaction0001921094-26-000989Sep 3, 2026 8:03 PM
9144Insider Transaction0001921094-26-000981Sep 1, 2026 8:29 PM
104Insider Transaction0000929638-26-003408Sep 1, 2026 8:05 PM
11144Insider Transaction0001921094-26-000965Aug 28, 2026 8:27 PM
12N-PXOthers0001135428-26-000201Aug 27, 2026 5:10 PM
13SCHEDULE 13GBeneficial Ownership Report0001398344-26-013791Aug 7, 2026 5:56 PM
144Insider Transaction0000929638-26-002909Aug 6, 2026 8:23 PM
15144Insider Transaction0001921094-26-000808Aug 5, 2026 8:26 PM
16144Insider Transaction0001921094-26-000799Aug 4, 2026 9:21 PM
174Insider Transaction0000929638-26-002873Aug 4, 2026 8:24 PM
18144Insider Transaction0001921094-26-000790Aug 3, 2026 8:13 PM
194Insider Transaction0000929638-26-002844Jul 30, 2026 8:06 PM
204Insider Transaction0000929638-26-002843Jul 30, 2026 8:06 PM
214Insider Transaction0000929638-26-002842Jul 30, 2026 8:05 PM
22144Insider Transaction0001921094-26-000765Jul 28, 2026 8:25 PM
23144Insider Transaction0001921094-26-000763Jul 28, 2026 8:19 PM
24144Insider Transaction0001921094-26-000760Jul 28, 2026 8:15 PM
254Insider Transaction0000929638-26-002741Jul 28, 2026 8:08 PM
264Insider Transaction0000929638-26-002740Jul 28, 2026 8:07 PM
2710-QQuarterly & Annual Report0000350894-26-000048Jul 27, 2026 7:00 PM
28144Insider Transaction0001921094-26-000754Jul 24, 2026 8:03 PM
293Insider Transaction0001628280-26-049375Jul 23, 2026 7:37 PM
308-KCurrent Report0000350894-26-000044Jul 22, 2026 8:03 PM
314Insider Transaction0001628280-26-045937Jun 29, 2026 5:55 PM
32144Insider Transaction0001968582-26-000660Jun 26, 2026 9:30 PM
3311-KOthers0000350894-26-000039Jun 23, 2026 9:19 PM
344Insider Transaction0001628280-26-042410Jun 11, 2026 10:23 AM
35144Insider Transaction0001969223-26-000670Jun 9, 2026 9:09 PM
368-KCurrent Report0000350894-26-000033May 28, 2026 2:57 PM
3713F-HRBeneficial Ownership0002048251-26-003739May 13, 2026 4:17 PM
384Insider Transaction0001628280-26-030177May 5, 2026 1:14 PM
394Insider Transaction0001628280-26-030177May 5, 2026 1:14 PM
40144Insider Transaction0001921094-26-000436May 4, 2026 8:26 PM
41144Insider Transaction0001921094-26-000436May 4, 2026 8:26 PM
42144Insider Transaction0001921094-26-000436May 4, 2026 8:26 PM
434Insider Transaction0001628280-26-028672Apr 30, 2026 11:35 AM
444Insider Transaction0001628280-26-028672Apr 30, 2026 11:35 AM
454Insider Transaction0001628280-26-028672Apr 30, 2026 11:35 AM
46SCHEDULE 13GBeneficial Ownership Report0002100121-26-000648Apr 29, 2026 7:06 PM
47144Insider Transaction0001921094-26-000421Apr 28, 2026 8:37 PM
4810-QQuarterly & Annual Report0000350894-26-000030Apr 27, 2026 6:45 PM
494Insider Transaction0001628280-26-027110Apr 24, 2026 5:13 PM
504Insider Transaction0001628280-26-027110Apr 24, 2026 5:13 PM
...

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