Stocks
SEIC Sei Investments Co

SEIC

Sei Investments Co

Company with tickers: SEIC

CIK

350894

CUSIP

784117103

Shares Outstanding

120,272,976

Price History Institutional Holders Short Volume Short Interest Fails to Deliver Financials SEC Filings Earnings Calls Insider Trades Congressional Trades

Date	Insider	Role	Type	Shares	Price	Value	After
2026-05-04	MCCARTHY KATHRYN	Director	Convert	5,000	$49.63	$248,150	87,883
2026-05-04	MCCARTHY KATHRYN	Director	Convert	5,000	—	—	0
2026-05-04	MCCARTHY KATHRYN	Director	Convert	5,000	—	—	0
2026-05-04	MCCARTHY KATHRYN	Director	Sell	10,000	$91.07	$910,700	77,883
2026-05-04	MCCARTHY KATHRYN	Director	Convert	5,000	$49.63	$248,150	82,883
2026-04-28	Warner Mark Andrew	Insider	Convert	2,000	—	—	0
2026-04-28	Warner Mark Andrew	Insider	Sell	4,000	$91.16	$364,640	921
2026-04-28	Warner Mark Andrew	Insider	Convert	2,000	—	—	0
2026-04-28	Warner Mark Andrew	Insider	Convert	4,000	$48.47	$193,880	4,921
2026-04-23	Sharma Sanjay	See Remarks*	Convert	12,500	$49.63	$620,375	52,328
2026-04-23	Sharma Sanjay	See Remarks*	Sell	1,559	$90.73	$141,448	39,828
2026-04-23	Sharma Sanjay	See Remarks*	Convert	12,500	$49.63	$620,375	64,828
2026-04-23	McCabe Philip	See Remarks	Other	2,738	—	—	2,738
2026-04-23	McCabe Philip	See Remarks	Sell	15,000	$91.82	$1,377,300	54,884
2026-04-23	Sharma Sanjay	See Remarks*	Convert	12,500	—	—	0
2026-04-23	Sharma Sanjay	See Remarks*	Other	2,653	—	—	2,653
2026-04-23	Sharma Sanjay	See Remarks*	Sell	23,441	$90.08	$2,111,565	41,387
2026-04-23	Sharma Sanjay	See Remarks*	Convert	12,500	—	—	0
2026-04-23	Peterson Michael	EXECUTIVE VICE PRESIDENT	Convert	10,000	—	—	0
2026-04-23	Peterson Michael	EXECUTIVE VICE PRESIDENT	Sell	10,000	$90.00	$900,000	20,148
2026-04-23	Peterson Michael	EXECUTIVE VICE PRESIDENT	Other	362	—	—	362
2026-04-23	Peterson Michael	EXECUTIVE VICE PRESIDENT	Convert	10,000	$48.47	$484,700	30,148
2026-03-31	Hicke Ryan	Director, CHIEF EXECUTIVE OFFICER	Other	15,105	—	—	15,105
2026-03-31	Hicke Ryan	Director, CHIEF EXECUTIVE OFFICER	Tax	4,349	$77.21	$335,786	192,814
2026-03-18	Denham Sean	Executive VP, CFO, COO	Tax	7,673	$78.77	$604,402	57,758
2026-03-18	Denham Sean	Executive VP, CFO, COO	Other	606	—	—	606
2026-03-11	WEST ALFRED P JR	Insider	Sell	6,076	$79.11	$480,672	6,877,154
2026-03-11	WEST ALFRED P JR	Insider	Sell	1,371	$79.94	$109,598	6,875,783
2026-03-10	WEST ALFRED P JR	Insider	Sell	29,431	$80.47	$2,368,313	6,883,230
2026-03-10	WEST ALFRED P JR	Insider	Sell	178	$78.88	$14,041	6,938,052
2026-03-10	WEST ALFRED P JR	Insider	Sell	25,391	$79.97	$2,030,518	6,912,661
2026-02-25	Warner Mark Andrew	Insider	Award	2,000	$71.12	$142,240	4,921
2026-02-25	Warner Mark Andrew	Insider	Award	2,000	$71.12	$142,240	2,921
2026-02-25	Warner Mark Andrew	Insider	Sell	4,000	$81.74	$326,960	921
2026-02-25	Warner Mark Andrew	Insider	Convert	2,000	—	—	0
2026-02-25	Warner Mark Andrew	Insider	Convert	2,000	—	—	0
2026-01-29	Hicke Ryan	Director, CHIEF EXECUTIVE OFFICER	Convert	12,500	—	—	0
2026-01-29	Hicke Ryan	Director, CHIEF EXECUTIVE OFFICER	Convert	17,500	—	—	0
2026-01-29	Hicke Ryan	Director, CHIEF EXECUTIVE OFFICER	Sell	49,937	$87.39	$4,363,994	210,217
2026-01-29	Hicke Ryan	Director, CHIEF EXECUTIVE OFFICER	Other	15,105	—	—	15,105
2026-01-29	Hicke Ryan	Director, CHIEF EXECUTIVE OFFICER	Convert	12,500	$71.12	$889,000	209,663
2026-01-29	Hicke Ryan	Director, CHIEF EXECUTIVE OFFICER	Convert	20,000	$64.43	$1,288,600	259,663
2026-01-29	Hicke Ryan	Director, CHIEF EXECUTIVE OFFICER	Convert	17,500	$48.47	$848,225	239,663
2026-01-29	Hicke Ryan	Director, CHIEF EXECUTIVE OFFICER	Convert	12,500	—	—	0
2026-01-29	Hicke Ryan	Director, CHIEF EXECUTIVE OFFICER	Convert	20,000	—	—	0
2026-01-29	Hicke Ryan	Director, CHIEF EXECUTIVE OFFICER	Sell	13,054	$88.06	$1,149,535	197,163
2026-01-29	Hicke Ryan	Director, CHIEF EXECUTIVE OFFICER	Convert	12,500	$71.12	$889,000	222,163
2026-01-29	Hicke Ryan	Director, CHIEF EXECUTIVE OFFICER	Sell	17,009	$86.75	$1,475,531	260,154
2026-01-29	Hicke Ryan	Director, CHIEF EXECUTIVE OFFICER	Convert	17,500	$56.54	$989,450	277,163
2026-01-29	Hicke Ryan	Director, CHIEF EXECUTIVE OFFICER	Convert	17,500	—	—	57,500
2026-01-01	WEST ALFRED P JR	Insider	Tax	3,482	$82.02	$285,594	6,938,230
2025-12-30	ROMEO CARMEN	Director	Gift	15,500	—	—	1,560,293
2025-12-22	DORAN WILLIAM	Director	Sell	7,000	$83.85	$586,950	623,802
2025-12-12	Denham Sean	Executive VP, CFO, COO	Award	49,000	—	—	49,000
2025-12-12	Denham Sean	Executive VP, CFO, COO	Award	13,254	—	—	65,431
2025-12-12	Denham Sean	Executive VP, CFO, COO	Other	322	—	—	322
2025-12-12	LANE MICHAEL	Executive Vice President	Award	49,650	—	—	49,650
2025-12-12	LANE MICHAEL	Executive Vice President	Other	204	—	—	204
2025-12-12	LANE MICHAEL	Executive Vice President	Award	8,916	—	—	41,981
2025-12-12	McCabe Philip	See Remarks	Other	2,441	—	—	2,441
2025-12-12	McCabe Philip	See Remarks	Award	47,000	—	—	47,000
2025-12-12	McCabe Philip	See Remarks	Award	8,434	—	—	70,978
2025-12-12	Peterson Michael	EXECUTIVE VICE PRESIDENT	Award	7,711	—	—	21,211
2025-12-12	Peterson Michael	EXECUTIVE VICE PRESIDENT	Other	270	—	—	270
2025-12-12	Peterson Michael	EXECUTIVE VICE PRESIDENT	Award	43,000	—	—	43,000
2025-12-12	Risi Karin A.	Director	Award	2,266	—	—	4,342
2025-12-12	GUARINO CARL	Director	Award	2,266	—	—	18,308
2025-12-12	MCCARTHY KATHRYN	Director	Award	2,266	—	—	77,907
2025-12-12	ROMEO CARMEN	Director	Award	2,266	—	—	1,575,793
2025-12-12	Naratil Thomas C.	Director	Award	2,266	—	—	4,342
2025-12-12	Brassington Jonathan	Director	Award	2,266	—	—	6,207
2025-12-12	DORAN WILLIAM	Director	Award	2,266	—	—	630,802
2025-12-12	Hicke Ryan	Director, CHIEF EXECUTIVE OFFICER	Award	288,333	—	—	288,333
2025-12-12	Hicke Ryan	Director, CHIEF EXECUTIVE OFFICER	Award	25,904	—	—	197,163
2025-12-12	Hicke Ryan	Director, CHIEF EXECUTIVE OFFICER	Other	14,726	—	—	14,726
2025-12-12	Sharma Sanjay	See Remarks*	Other	2,369	—	—	2,369
2025-12-12	Sharma Sanjay	See Remarks*	Award	8,434	—	—	32,328
2025-12-12	Sharma Sanjay	See Remarks*	Award	7,500	—	—	39,828
2025-12-12	Sharma Sanjay	See Remarks*	Award	47,000	—	—	47,000
2025-12-05	MCCARTHY KATHRYN	Director	Tax	24	$81.25	$1,950	77,883
2025-12-05	Peterson Michael	EXECUTIVE VICE PRESIDENT	Other	270	—	—	270
2025-12-05	Peterson Michael	EXECUTIVE VICE PRESIDENT	Tax	1,063	$81.25	$86,369	20,148
2025-12-05	WEST ALFRED P JR	Insider	Tax	1,100	$81.25	$89,375	6,941,712
2025-12-05	Warner Mark Andrew	Insider	Tax	379	$81.25	$30,794	921
2025-12-05	McCabe Philip	See Remarks	Tax	1,094	$81.25	$88,888	69,884
2025-12-05	McCabe Philip	See Remarks	Other	2,441	—	—	2,441
2025-12-04	McCabe Philip	See Remarks	Convert	12,000	$53.34	$640,080	74,544
2025-12-04	McCabe Philip	See Remarks	Sell	12,000	$81.11	$973,320	62,544
2025-12-04	McCabe Philip	See Remarks	Other	2,441	—	—	2,441
2025-12-04	McCabe Philip	See Remarks	Convert	12,000	—	—	0
2025-12-03	WEST ALFRED P JR	Insider	Convert	30,000	—	—	0
2025-12-03	WEST ALFRED P JR	Insider	Sell	24,770	$80.87	$2,003,150	6,942,812
2025-12-03	WEST ALFRED P JR	Insider	Convert	30,000	$53.34	$1,600,200	6,967,582
2025-11-17	DORAN WILLIAM	Director	Convert	10,000	$53.34	$533,400	628,536
2025-11-17	DORAN WILLIAM	Director	Convert	5,000	—	—	0
2025-11-17	DORAN WILLIAM	Director	Convert	5,000	—	—	0
2025-11-12	Peterson Michael	EXECUTIVE VICE PRESIDENT	Convert	25,000	—	—	0
2025-11-12	Peterson Michael	EXECUTIVE VICE PRESIDENT	Convert	25,000	$54.34	$1,358,500	38,500
2025-11-12	Peterson Michael	EXECUTIVE VICE PRESIDENT	Sell	25,000	$84.21	$2,105,250	13,500
2025-11-11	ROMEO CARMEN	Director	Convert	5,000	$53.34	$266,700	1,578,527