Stocks
SEIC SEI INVESTMENTS CO

SEIC

SEI INVESTMENTS CO

Company with tickers: SEIC

CIK

350894

Shares Outstanding

122,248,132

Price Holdings Short Volume Short Interest Fails to Deliver SEC Filings Earnings Calls Insider Trading Congress Trades

Date	Insider	Role	Type	Shares	Price	Value	After
2026-03-31	Hicke Ryan	Director, CHIEF EXECUTIVE OFFICER	Tax	4,349	$77.21	$335,786	192,814
2026-03-31	Hicke Ryan	Director, CHIEF EXECUTIVE OFFICER	Other	15,105	—	—	15,105
2026-03-18	Denham Sean	Executive VP, CFO, COO	Other	606	—	—	606
2026-03-18	Denham Sean	Executive VP, CFO, COO	Tax	7,673	$78.77	$604,402	57,758
2026-03-11	WEST ALFRED P JR	Insider	Sell	6,076	$79.11	$480,672	6,877,154
2026-03-10	WEST ALFRED P JR	Insider	Sell	178	$78.88	$14,041	6,938,052
2026-02-25	Warner Mark Andrew	Insider	Award	2,000	$71.12	$142,240	2,921
2026-02-25	Warner Mark Andrew	Insider	Convert	2,000	—	—	0
2026-02-25	Warner Mark Andrew	Insider	Sell	4,000	$81.74	$326,960	921
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	Other	15,105	—	—	15,105
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	12,500	—	—	0
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	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	Denham Sean	Executive VP, CFO, COO	Award	13,254	—	—	65,431
2025-12-12	Denham Sean	Executive VP, CFO, COO	Award	49,000	—	—	49,000
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	Award	8,434	—	—	70,978
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	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*	Award	8,434	—	—	32,328
2025-12-12	Sharma Sanjay	See Remarks*	Award	47,000	—	—	47,000
2025-12-12	Sharma Sanjay	See Remarks*	Other	2,369	—	—	2,369
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
2025-12-05	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	MCCARTHY KATHRYN	Director	Tax	24	$81.25	$1,950	77,883
2025-12-05	Warner Mark Andrew	Insider	Tax	379	$81.25	$30,794	921
2025-12-05	McCabe Philip	See Remarks	Other	2,441	—	—	2,441
2025-12-05	McCabe Philip	See Remarks	Tax	1,094	$81.25	$88,888	69,884
2025-12-04	McCabe Philip	See Remarks	Convert	12,000	$53.34	$640,080	74,544
2025-12-04	McCabe Philip	See Remarks	Other	2,441	—	—	2,441
2025-12-04	McCabe Philip	See Remarks	Convert	12,000	—	—	0
2025-12-04	McCabe Philip	See Remarks	Sell	12,000	$81.11	$973,320	62,544
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	—	—	0
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
2025-11-12	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
2025-11-11	ROMEO CARMEN	Director	Convert	5,000	—	—	0
2025-11-11	ROMEO CARMEN	Director	Sell	5,000	$84.01	$420,050	1,573,527
2025-10-24	McCabe Philip	See Remarks	Convert	12,000	—	—	0
2025-10-24	McCabe Philip	See Remarks	Convert	12,000	$53.34	$640,080	62,544
2025-10-24	McCabe Philip	See Remarks	Other	2,441	—	—	2,441
2025-09-29	MCCARTHY KATHRYN	Director	Convert	10,000	$53.34	$533,400	85,641
2025-09-29	MCCARTHY KATHRYN	Director	Sell	10,000	$85.66	$856,600	75,641
2025-09-29	MCCARTHY KATHRYN	Director	Convert	5,000	—	—	0
2025-09-23	GUARINO CARL	Director	Sell	10,000	$86.41	$864,100	16,042
2025-09-23	GUARINO CARL	Director	Convert	10,000	$53.34	$533,400	26,042
2025-09-23	GUARINO CARL	Director	Convert	5,000	—	—	0
2025-09-16	LANE MICHAEL	Executive Vice President	Other	154	—	—	154
2025-09-16	LANE MICHAEL	Executive Vice President	Tax	3,935	$86.60	$340,771	33,065
2025-08-19	Hicke Ryan	Director, CHIEF EXECUTIVE OFFICER	Convert	17,500	$49.63	$868,525	188,759
2025-08-19	Hicke Ryan	Director, CHIEF EXECUTIVE OFFICER	Sell	35,000	$88.30	$3,090,500	171,259
2025-08-19	Hicke Ryan	Director, CHIEF EXECUTIVE OFFICER	Convert	17,500	—	—	0
2025-08-19	Hicke Ryan	Director, CHIEF EXECUTIVE OFFICER	Other	14,687	—	—	14,687
2025-08-07	Peterson Michael	EXECUTIVE VICE PRESIDENT	Convert	7,089	$61.81	$438,171	20,589
2025-08-07	Peterson Michael	EXECUTIVE VICE PRESIDENT	Sell	7,089	$88.55	$627,731	13,500
2025-08-07	Peterson Michael	EXECUTIVE VICE PRESIDENT	Convert	7,089	—	—	0
2025-08-05	Peterson Michael	EXECUTIVE VICE PRESIDENT	Sell	684	$88.69	$60,664	13,500
2025-08-05	Peterson Michael	EXECUTIVE VICE PRESIDENT	Convert	684	—	—	7,089
2025-08-05	Peterson Michael	EXECUTIVE VICE PRESIDENT	Convert	684	$61.81	$42,278	14,184
2025-07-31	Peterson Michael	EXECUTIVE VICE PRESIDENT	Convert	4,727	—	—	7,773
2025-07-31	Peterson Michael	EXECUTIVE VICE PRESIDENT	Sell	4,727	$88.51	$418,387	13,500
2025-07-31	Peterson Michael	EXECUTIVE VICE PRESIDENT	Convert	4,727	$61.81	$292,176	18,227
2025-07-29	Warner Mark Andrew	Insider	Sell	5,000	$88.75	$443,750	1,300
2025-07-29	Warner Mark Andrew	Insider	Convert	5,000	$49.63	$248,150	6,300
2025-07-29	Warner Mark Andrew	Insider	Convert	2,500	—	—	0
2025-07-22	Naratil Thomas C.	Director	Award	2,076	—	—	2,076
2025-07-22	Risi Karin A.	Director	Award	2,076	—	—	2,076
2025-07-22	Naratil Thomas C.	Director	Other	0	—	—	0
2025-07-22	Risi Karin A.	Director	Other	0	—	—	0
2025-05-29	WEST ALFRED P JR	Insider	Sell	64,498	$84.26	$5,434,601	6,939,210
2025-05-28	WEST ALFRED P JR	Insider	Sell	75,000	$85.78	$6,433,500	7,003,708
2025-05-15	Peterson Michael	EXECUTIVE VICE PRESIDENT	Sell	50,000	$84.27	$4,213,500	13,500
2025-05-15	Peterson Michael	EXECUTIVE VICE PRESIDENT	Convert	12,500	—	—	0
2025-05-15	Peterson Michael	EXECUTIVE VICE PRESIDENT	Convert	37,500	—	—	0
2025-05-15	Peterson Michael	EXECUTIVE VICE PRESIDENT	Convert	37,500	$56.54	$2,120,250	51,000