United States Investment Banking & Investment Services

SEI Investments Co (SEIC)

Track

Over the past 90 days, SEI Investments Co. insiders have executed 21 transactions, all of which were sales totaling approximately $30.5 million. These divestments occurred following the company's July 2026 earnings report, which exceeded expectations. The stock has seen a 15.6% price increase over the same period, currently trading near its 52-week high.
Ticker: SEIC Exchange: NSM
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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Insider trades have triggered activity signals for SEI Investments Co. Upgrade to see score, net flow, insiders and the full signal context.

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Top insiders
Trades
Sale 5 Aug 2026
Value US$858,123.38 | Price 344.24 | Shares 51,684 (-30.6%)
Proposed sale 5 Aug 2026
Value US$2,571,551.97 | Price 429.54 | Shares 81,718
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-08-06 2026-08-05 S Sale
2.1
McCabe Philip

See Remarks

Officer
51,684 -30.6%
344.24
US$858,123 		51,684 -30.6% 344.24 US$858,123
2026-08-05 2026-08-05 PrS Proposed sale
2.1
McCabe Philip

Officer

Officer
81,718
429.54
US$2,571,552 		81,718 429.54 US$2,571,552
2026-08-06 2026-08-04 S Sale
2.1
McCabe Philip

See Remarks

Officer
19,101 -32.0%
406.60
US$1,065,347 		19,101 -32.0% 406.60 US$1,065,347
2026-08-04 2026-08-04 PrS Proposed sale
2.1
McCabe Philip

Officer

Officer
1,000
105.04
US$100,000 		1,000 105.04 US$100,000
2026-08-04 2026-08-03 S Sale
3.0
MCCARTHY KATHRYN
Non-Executive Director
1,000 -11.4%
103.54
US$100,000 		1,000 -11.4% 103.54 US$100,000
2026-08-03 2026-08-03 PrS Proposed sale
3.0
MCCARTHY KATHRYN

Director

Non-Executive Director
1,000
103.53
US$100,000 		1,000 103.53 US$100,000
2026-07-30 2026-07-28 S Sale
2.8
Warner Mark Andrew

See Remarks*

Officer
1,000 -88.9%
102.97
US$100,000 		1,000 -88.9% 102.97 US$100,000
2026-07-30 2026-07-28 S Sale
2.8
Warner Mark Andrew

See Remarks*

Officer
1,000 -38.9%
102.01
US$100,000 		1,000 -38.9% 102.01 US$100,000
2026-07-30 2026-07-28 S Sale
2.8
Warner Mark Andrew

See Remarks*

Officer
1,000 -14.4%
101.11
US$100,000 		1,000 -14.4% 101.11 US$100,000
2026-07-30 2026-07-28 S Sale
2.8
Peterson Michael

Executive Vice President

Officer
1,000 -55.4%
102.05
US$100,000 		1,000 -55.4% 102.05 US$100,000
2026-07-30 2026-07-28 S Sale
2.1
GUARINO CARL
Non-Executive Director
1,000 -35.3%
103.20
US$100,000 		1,000 -35.3% 103.20 US$100,000
2026-07-28 2026-07-28 PrS Proposed sale
2.8
Warner Mark Andrew

Officer

Officer
1,000
102.35
US$100,000 		1,000 102.35 US$100,000
2026-07-28 2026-07-28 PrS Proposed sale
2.8
Peterson Michael

Officer

Officer
1,000
102.05
US$100,000 		1,000 102.05 US$100,000
2026-07-28 2026-07-28 PrS Proposed sale
2.1
GUARINO CARL

Director

Non-Executive Director
1,000
103.20
US$100,000 		1,000 103.20 US$100,000
2026-07-28 2026-07-24 S Sale
2.4
Sharma Sanjay

See Remarks*

Officer
1,000 -33.4%
99.33
US$100,000 		1,000 -33.4% 99.33 US$100,000
2026-07-24 2026-07-24 PrS Proposed sale
2.4
Sharma Sanjay

Officer

Officer
1,000
99.33
US$100,000 		1,000 99.33 US$100,000
2026-06-29 2026-06-29 S Sale
3.1
WEST ALFRED P JR

Chairman Emeritus
1,680 -0.0%
88.09
US$147,991 		1,680 -0.0% 88.09 US$147,991
2026-06-29 2026-06-29 S Sale
3.1
WEST ALFRED P JR

Chairman Emeritus
5,652 -0.1%
87.18
US$492,741 		5,652 -0.1% 87.18 US$492,741
2026-06-29 2026-06-26 S Sale
3.1
WEST ALFRED P JR

Chairman Emeritus
3,838 -0.1%
87.67
US$336,477 		3,838 -0.1% 87.67 US$336,477
2026-06-29 2026-06-26 S Sale
3.1
WEST ALFRED P JR

Chairman Emeritus
46,162 -0.7%
87.21
US$4,025,788 		46,162 -0.7% 87.21 US$4,025,788
2026-06-26 2026-06-26 PrS Proposed sale
3.1
Alfred P. West, Jr.

Affiliate
59,000
87.93
US$5,187,870 		59,000 87.93 US$5,187,870
2026-06-11 2026-06-09 S Sale
3.0
DORAN WILLIAM
Non-Executive Director
5,000 -0.8%
90.50
US$452,500 		5,000 -0.8% 90.50 US$452,500
2026-06-09 2026-06-09 PrS Proposed sale
3.0
William M Doran

Director

Non-Executive Director
5,000
90.50
US$452,500 		5,000 90.50 US$452,500
2026-05-05 2026-05-04 S Sale
3.0
MCCARTHY KATHRYN
Non-Executive Director
10,000 -11.4%
91.07
US$910,700 		10,000 -11.4% 91.07 US$910,700
2026-05-04 2026-05-04 PrS Proposed sale
3.0
MCCARTHY KATHRYN

Director

Non-Executive Director
10,000
91.07
US$910,747 		10,000 91.07 US$910,747
2026-04-30 2026-04-28 S Sale
2.8
Warner Mark Andrew

In Remarks

Officer
4,000 -81.3%
91.16
US$364,640 		4,000 -81.3% 91.16 US$364,640
2026-04-28 2026-04-28 PrS Proposed sale
2.8
Warner Mark Andrew

Officer

Officer
4,000
91.16
US$364,640 		4,000 91.16 US$364,640
2026-04-24 2026-04-23 S Sale
2.1
McCabe Philip

See Remarks

Officer
15,000 -21.5%
91.82
US$1,377,300 		15,000 -21.5% 91.82 US$1,377,300
2026-04-23 2026-04-23 S Sale
2.4
Sharma Sanjay

See Remarks*

Officer
1,559 -3.8%
90.73
US$141,448 		1,559 -3.8% 90.73 US$141,448
2026-04-23 2026-04-23 S Sale
2.4
Sharma Sanjay

See Remarks*

Officer
23,441 -36.2%
90.08
US$2,111,565 		23,441 -36.2% 90.08 US$2,111,565
2026-04-23 2026-04-23 S Sale
2.8
Peterson Michael

EXECUTIVE VICE PRESIDENT

Officer
10,000 -33.2%
90.00
US$900,000 		10,000 -33.2% 90.00 US$900,000
2026-04-23 2026-04-23 PrS Proposed sale
2.1
PHILIP MC CABE

Officer

Officer
20,000
91.73
US$1,834,646 		20,000 91.73 US$1,834,646
2026-04-23 2026-04-23 PrS Proposed sale
2.4
Sharma Sanjay

Officer

Officer
25,000
90.12
US$2,252,914 		25,000 90.12 US$2,252,914
2026-04-23 2026-04-23 PrS Proposed sale
2.8
Peterson Michael

Officer

Officer
10,000
90.00
US$900,000 		10,000 90.00 US$900,000
2026-03-12 2026-03-11 S Sale
3.1
WEST ALFRED P JR

Chairman Emeritus
1,371 -0.0%
79.94
US$109,598 		1,371 -0.0% 79.94 US$109,598
2026-03-12 2026-03-11 S Sale
3.1
WEST ALFRED P JR

Chairman Emeritus
6,076 -0.1%
79.11
US$480,672 		6,076 -0.1% 79.11 US$480,672
2026-03-12 2026-03-10 S Sale
3.1
WEST ALFRED P JR

Chairman Emeritus
29,431 -0.4%
80.47
US$2,368,313 		29,431 -0.4% 80.47 US$2,368,313
2026-03-12 2026-03-10 S Sale
3.1
WEST ALFRED P JR

Chairman Emeritus
25,391 -0.4%
79.97
US$2,030,518 		25,391 -0.4% 79.97 US$2,030,518
2026-03-12 2026-03-10 S Sale
3.1
WEST ALFRED P JR

Chairman Emeritus
178 -0.0%
78.88
US$14,041 		178 -0.0% 78.88 US$14,041
2026-03-10 2026-03-10 PrS Proposed sale
3.1
Alfred Paul West Jr

Affiliate
67,000
81.16
US$5,437,720 		67,000 81.16 US$5,437,720
2026-02-26 2026-02-25 S Sale
2.8
Warner Mark Andrew

See Remarks
4,000 -81.3%
81.74
US$326,960 		4,000 -81.3% 81.74 US$326,960
2026-02-25 2026-02-25 PrS Proposed sale
2.8
Warner Mark Andrew

Officer

Officer
4,000
81.74
US$326,964 		4,000 81.74 US$326,964
2026-02-02 2026-01-29 S Sale
2.9
Hicke Ryan

CHIEF EXECUTIVE OFFICER

Executive Director
13,054 -6.2%
88.06
US$1,149,535 		13,054 -6.2% 88.06 US$1,149,535
2026-02-02 2026-01-29 S Sale
2.9
Hicke Ryan

CHIEF EXECUTIVE OFFICER

Executive Director
49,937 -19.2%
87.39
US$4,363,994 		49,937 -19.2% 87.39 US$4,363,994
2026-02-02 2026-01-29 S Sale
2.9
Hicke Ryan

CHIEF EXECUTIVE OFFICER

Executive Director
17,009 -6.1%
86.75
US$1,475,531 		17,009 -6.1% 86.75 US$1,475,531
2026-01-29 2026-01-29 PrS Proposed sale
2.9
Hicke Ryan

Officer; Director

Executive Director
80,000
87.36
US$6,988,815 		80,000 87.36 US$6,988,815
2025-12-23 2025-12-22 S Sale
3.0
DORAN WILLIAM
Non-Executive Director
7,000 -1.1%
83.85
US$586,950 		7,000 -1.1% 83.85 US$586,950
2025-12-22 2025-12-22 PrS Proposed sale
3.0
DORAN WILLIAM

Director

Non-Executive Director
7,000
83.85
US$586,950 		7,000 83.85 US$586,950
2025-12-08 2025-12-04 S Sale
2.1
McCabe Philip

See Remarks

Officer
12,000 -16.1%
81.11
US$973,320 		12,000 -16.1% 81.11 US$973,320
2025-12-04 2025-12-04 PrS Proposed sale
2.1
McCabe Philip

Officer

Officer
12,000
81.11
US$973,372 		12,000 81.11 US$973,372
2025-12-05 2025-12-03 S Sale
3.1
WEST ALFRED P JR

Executive Chairman

Executive Director
24,770 -0.4%
80.87
US$2,003,150 		24,770 -0.4% 80.87 US$2,003,150
2025-12-03 2025-12-03 PrS Proposed sale
3.1
WEST ALFRED P JR

Officer; Director

Executive Director
24,770
80.87
US$2,003,217 		24,770 80.87 US$2,003,217
2025-11-13 2025-11-12 S Sale
2.8
Peterson Michael

EXECUTIVE VICE PRESIDENT

Officer
25,000 -64.9%
84.21
US$2,105,250 		25,000 -64.9% 84.21 US$2,105,250
2025-11-12 2025-11-12 PrS Proposed sale
2.8
Peterson Michael

Officer

Officer
25,000
84.21
US$2,105,362 		25,000 84.21 US$2,105,362
2025-11-12 2025-11-11 PrS Proposed sale
2.1
ROMEO CARMEN

Director

Non-Executive Director
5,000
84.01
US$420,026 		5,000 84.01 US$420,026
2025-11-12 2025-11-11 S Sale
2.1
ROMEO CARMEN
Non-Executive Director
5,000 -0.3%
84.01
US$420,050 		5,000 -0.3% 84.01 US$420,050
2025-09-29 2025-09-29 PrS Proposed sale
3.0
MCCARTHY KATHRYN

Director

Non-Executive Director
10,000
85.66
US$856,555 		10,000 85.66 US$856,555
2025-09-29 2025-09-29 S Sale
3.0
MCCARTHY KATHRYN
Non-Executive Director
10,000 -11.7%
85.66
US$856,600 		10,000 -11.7% 85.66 US$856,600
2025-09-24 2025-09-23 S Sale
2.1
GUARINO CARL
Non-Executive Director
10,000 -38.4%
86.41
US$864,100 		10,000 -38.4% 86.41 US$864,100
2025-09-23 2025-09-23 PrS Proposed sale
2.1
GUARINO CARL

Director

Non-Executive Director
10,000
86.41
US$864,120 		10,000 86.41 US$864,120
2025-09-22 2025-09-22 PrS Proposed sale
MILLER STEPHANIE D.

Former Director

Non-Executive Director
7,500
86.33
US$647,473 		7,500 86.33 US$647,473
2025-08-20 2025-08-19 S Sale
2.9
Hicke Ryan

CHIEF EXECUTIVE OFFICER

Executive Director
35,000 -17.0%
88.30
US$3,090,500 		35,000 -17.0% 88.30 US$3,090,500
2025-08-19 2025-08-19 PrS Proposed sale
2.9
Hicke Ryan

Officer

Officer
35,000
88.30
US$3,090,362 		35,000 88.30 US$3,090,362
2025-08-08 2025-08-07 S Sale
2.8
Peterson Michael

EXECUTIVE VICE PRESIDENT

Officer
7,089 -34.4%
88.55
US$627,731 		7,089 -34.4% 88.55 US$627,731
2025-08-06 2025-08-05 S Sale
2.8
Peterson Michael

EXECUTIVE VICE PRESIDENT

Officer
684 -4.8%
88.69
US$60,664 		684 -4.8% 88.69 US$60,664
2025-08-04 2025-07-31 S Sale
2.8
Peterson Michael

EXECUTIVE VICE PRESIDENT

Officer
4,727 -25.9%
88.51
US$418,387 		4,727 -25.9% 88.51 US$418,387
2025-07-31 2025-07-31 PrS Proposed sale
2.8
Peterson Michael

Officer

Officer
12,500
88.51
US$1,106,317 		12,500 88.51 US$1,106,317
2025-07-30 2025-07-29 S Sale
2.8
Warner Mark Andrew

See Remarks
5,000 -79.4%
88.75
US$443,750 		5,000 -79.4% 88.75 US$443,750
2025-07-29 2025-07-29 PrS Proposed sale
2.8
Warner Mark Andrew

Officer

Officer
5,000
88.75
US$443,759 		5,000 88.75 US$443,759
2025-05-30 2025-05-29 S Sale
3.1
WEST ALFRED P JR

Executive Chairman

Executive Director
1,628 -0.0%
85.21
US$138,722 		1,628 -0.0% 85.21 US$138,722
2025-05-30 2025-05-29 S Sale
3.1
WEST ALFRED P JR

Executive Chairman

Executive Director
64,498 -0.9%
84.26
US$5,434,601 		64,498 -0.9% 84.26 US$5,434,601
2025-05-30 2025-05-28 S Sale
3.1
WEST ALFRED P JR

Executive Chairman

Executive Director
75,000 -1.1%
85.78
US$6,433,500 		75,000 -1.1% 85.78 US$6,433,500
2025-05-28 2025-05-28 PrS Proposed sale
3.1
Alfred P. West, Jr.

Executive Chairman
151,000
85.97
US$12,981,470 		151,000 85.97 US$12,981,470
2025-05-16 2025-05-15 S Sale
2.8
Peterson Michael

EXECUTIVE VICE PRESIDENT

Officer
50,000 -78.7%
84.27
US$4,213,500 		50,000 -78.7% 84.27 US$4,213,500
2025-05-15 2025-05-15 PrS Proposed sale
2.8
Peterson Michael

Officer

Officer
50,000
84.27
US$4,213,390 		50,000 84.27 US$4,213,390
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