SEI Investments Co (SEIC) - Insider Trading & Ownership

Real time insider trading transaction history:

  • Insiders are prohibited from making short-swing profits by trading their shares within 6 months of the registration or acquiring the shares.
  • Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
Time period
Insider Trading Transactions for SEI Investments Co
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Common stock purchase or sale:
Transaction
Date
Reported
DateTime
CompanySymbolInsider
Relationship
Shares
Traded
Average
Price
Total
Amount
Shares
Owned
Filing
2026-08-04
Sale
2026-08-06
4:23 pm
SEI INVESTMENTS COSEICMcCabe Philip
See Remarks
30,000$105.12$3,153,47062,666
(Indirect
Direct)
View
2026-08-03
Sale
2026-08-04
4:24 pm
SEI INVESTMENTS COSEICMCCARTHY KATHRYN
Director
10,000$103.53$1,035,35077,883
(Direct)
View
2026-07-28
Sale
2026-07-30
4:06 pm
SEI INVESTMENTS COSEICWarner Mark Andrew
See Remarks*
15,000$102.35$1,535,193921
(Direct)
View
2026-07-28
Sale
2026-07-30
4:06 pm
SEI INVESTMENTS COSEICPeterson Michael
Executive Vice President
25,000$102.05$2,551,25020,510
(Indirect
Direct)
View
2026-07-28
Sale
2026-07-30
4:05 pm
SEI INVESTMENTS COSEICGUARINO CARL
Director
10,000$103.19$1,031,95018,308
(Direct)
View
2026-07-24
Sale
2026-07-28
4:08 pm
SEI INVESTMENTS COSEICSharma Sanjay
See Remarks*
20,000$99.33$1,986,58842,483
(Indirect
Direct)
View
2026-06-26
Sale
2026-06-29
1:55 pm
SEI INVESTMENTS COSEICWEST ALFRED P JR
Chairman Emeritus
57,332$87.26$5,002,9986,818,451
(Direct)
View
2026-06-09
Sale
2026-06-11
10:23 am
SEI INVESTMENTS COSEICDORAN WILLIAM
Director
5,000$90.5$452,500618,802
(Direct)
View
2026-05-04
Sale
2026-05-05
09:14 am
SEI INVESTMENTS COSEICMCCARTHY KATHRYN
Director
10,000$91.07$910,70077,883
(Direct)
View
2026-04-28
Sale
2026-04-30
11:35 am
SEI INVESTMENTS COSEICWarner Mark Andrew
In Remarks
4,000$91.16$364,640921
(Direct)
View
2026-04-23
Sale
2026-04-24
1:13 pm
SEI INVESTMENTS COSEICMcCabe Philip
See Remarks
15,000$91.82$1,377,30057,623
(Indirect
Direct)
View
2026-04-23
Sale
2026-04-23
5:35 pm
SEI INVESTMENTS COSEICSharma Sanjay
See Remarks*
25,000$90.12$2,253,01342,483
(Indirect
Direct)
View
2026-04-23
Sale
2026-04-23
5:33 pm
SEI INVESTMENTS COSEICPeterson Michael
EXECUTIVE VICE PRESIDENT
10,000$90$900,00020,510
(Indirect
Direct)
View
2026-03-10
Sale
2026-03-12
10:13 am
SEI INVESTMENTS COSEICWEST ALFRED P JR
Chairman Emeritus
62,447$80.12$5,003,1426,875,783
(Direct)
View
2026-02-25
Sale
2026-02-26
11:59 am
SEI INVESTMENTS COSEICWarner Mark Andrew
See Remarks
4,000$81.74$326,960921
(Direct)
View
2026-01-29
Sale
2026-02-02
11:52 am
SEI INVESTMENTS COSEICHicke Ryan
CHIEF EXECUTIVE OFFICER
80,000$87.36$6,989,060269,770
(Indirect
Direct)
View
2025-12-22
Sale
2025-12-23
11:15 am
SEI INVESTMENTS COSEICDORAN WILLIAM
Director
7,000$83.85$586,950623,802
(Direct)
View

Stock options: Exercise, Award, Grant, Conversion
Transaction
Date
Reported
DateTime
Exercisable
Expiration
CompanySymnbolInsider
Relationship
Shares
Traded
Conversion
Price
Shares
Owned
Filing
2026-08-04
Exercise
2026-08-06
4:23 pm
2019-12-31
2026-12-13
SEI INVESTMENTS COSEICMcCabe Philip
See Remarks
30,000$062,666
(Direct)
View
2026-08-04
Exercise
2026-08-06
4:23 pm
N/A
N/A
SEI INVESTMENTS COSEICMcCabe Philip
See Remarks
30,000$49.6362,666
(Direct)
View
2026-08-03
Exercise
2026-08-04
4:24 pm
N/A
N/A
SEI INVESTMENTS COSEICMCCARTHY KATHRYN
Director
5,000$71.1277,883
(Direct)
View
2026-08-03
Exercise
2026-08-04
4:24 pm
2021-12-31
2027-12-12
SEI INVESTMENTS COSEICMCCARTHY KATHRYN
Director
10,000$077,883
(Direct)
View
2026-07-28
Exercise
2026-07-30
4:06 pm
N/A
N/A
SEI INVESTMENTS COSEICWarner Mark Andrew
See Remarks*
2,500$64.43921
(Direct)
View
2026-07-28
Exercise
2026-07-30
4:06 pm
2021-12-31
2029-12-09
SEI INVESTMENTS COSEICWarner Mark Andrew
See Remarks*
15,000$0921
(Direct)
View
2026-07-28
Exercise
2026-07-30
4:06 pm
N/A
N/A
SEI INVESTMENTS COSEICWarner Mark Andrew
See Remarks*
5,000$56.54921
(Direct)
View
2026-07-28
Exercise
2026-07-30
4:06 pm
2021-12-31
2030-06-18
SEI INVESTMENTS COSEICPeterson Michael
Executive Vice President
25,000$020,510
(Direct)
View
2026-07-28
Exercise
2026-07-30
4:06 pm
N/A
N/A
SEI INVESTMENTS COSEICPeterson Michael
Executive Vice President
25,000$55.7320,510
(Direct)
View
2026-07-28
Exercise
2026-07-30
4:05 pm
2017-12-13
2026-12-13
SEI INVESTMENTS COSEICGUARINO CARL
Director
10,000$018,308
(Direct)
View
2026-07-28
Exercise
2026-07-30
4:05 pm
N/A
N/A
SEI INVESTMENTS COSEICGUARINO CARL
Director
5,000$49.6318,308
(Direct)
View
2026-07-24
Exercise
2026-07-28
4:08 pm
N/A
N/A
SEI INVESTMENTS COSEICSharma Sanjay
See Remarks*
10,000$71.1242,483
(Direct)
View
2026-07-24
Exercise
2026-07-28
4:08 pm
2022-02-23
2027-12-12
SEI INVESTMENTS COSEICSharma Sanjay
See Remarks*
20,000$042,483
(Direct)
View
2026-07-24
Tax Withholding
2026-07-28
4:07 pm
N/A
N/A
SEI INVESTMENTS COSEICShah Sneha S.
See Remarks*
3,746$96.7314,313
(Direct)
View

Ownership
2026-07-23
3:37 pm
N/A
N/A
SEI INVESTMENTS COSEICShah Sneha S.
EVP &Head-New Bus Ventures SEI
0$0100,059
(Direct)
View
2026-05-04
Exercise
2026-05-05
09:14 am
2017-12-31
2026-12-13
SEI INVESTMENTS COSEICMCCARTHY KATHRYN
Director
10,000$077,883
(Direct)
View
2026-05-04
Exercise
2026-05-05
09:14 am
N/A
N/A
SEI INVESTMENTS COSEICMCCARTHY KATHRYN
Director
5,000$49.6377,883
(Direct)
View
2026-04-28
Exercise
2026-04-30
11:35 am
2021-12-31
2028-12-11
SEI INVESTMENTS COSEICWarner Mark Andrew
In Remarks
4,000$0921
(Direct)
View
2026-04-28
Exercise
2026-04-30
11:35 am
N/A
N/A
SEI INVESTMENTS COSEICWarner Mark Andrew
In Remarks
4,000$48.47921
(Direct)
View
2026-04-23
Exercise
2026-04-23
5:35 pm
2017-12-31
2026-12-13
SEI INVESTMENTS COSEICSharma Sanjay
See Remarks*
25,000$042,483
(Direct)
View
2026-04-23
Exercise
2026-04-23
5:35 pm
N/A
N/A
SEI INVESTMENTS COSEICSharma Sanjay
See Remarks*
12,500$49.6342,483
(Direct)
View
2026-04-23
Exercise
2026-04-23
5:33 pm
2021-12-31
2028-12-11
SEI INVESTMENTS COSEICPeterson Michael
EXECUTIVE VICE PRESIDENT
10,000$020,510
(Direct)
View
2026-04-23
Exercise
2026-04-23
5:33 pm
N/A
N/A
SEI INVESTMENTS COSEICPeterson Michael
EXECUTIVE VICE PRESIDENT
10,000$48.4720,510
(Direct)
View
2026-03-31
Tax Withholding
2026-04-01
1:41 pm
N/A
N/A
SEI INVESTMENTS COSEICHicke Ryan
CHIEF EXECUTIVE OFFICER
4,349$77.21207,921
(Direct)
View
2026-03-18
Tax Withholding
2026-03-19
10:06 am
N/A
N/A
SEI INVESTMENTS COSEICDenham Sean
Executive VP, CFO, COO
7,673$78.7758,365
(Direct)
View
2026-02-25
Option Award
2026-02-26
11:59 am
N/A
N/A
SEI INVESTMENTS COSEICWarner Mark Andrew
See Remarks
2,000$71.12921
(Direct)
View
2026-02-25
Exercise
2026-02-26
11:59 am
2021-12-31
2027-12-12
SEI INVESTMENTS COSEICWarner Mark Andrew
See Remarks
4,000$0921
(Direct)
View
2026-01-29
Exercise
2026-02-02
11:52 am
N/A
N/A
SEI INVESTMENTS COSEICHicke Ryan
CHIEF EXECUTIVE OFFICER
12,500$71.12269,770
(Direct)
View
2026-01-29
Exercise
2026-02-02
11:52 am
N/A
N/A
SEI INVESTMENTS COSEICHicke Ryan
CHIEF EXECUTIVE OFFICER
20,000$64.43269,770
(Direct)
View
2026-01-29
Exercise
2026-02-02
11:52 am
2022-02-23
2027-12-12
SEI INVESTMENTS COSEICHicke Ryan
CHIEF EXECUTIVE OFFICER
80,000$0269,770
(Direct)
View
2026-01-29
Exercise
2026-02-02
11:52 am
N/A
N/A
SEI INVESTMENTS COSEICHicke Ryan
CHIEF EXECUTIVE OFFICER
17,500$56.54269,770
(Direct)
View
2026-01-29
Exercise
2026-02-02
11:52 am
N/A
N/A
SEI INVESTMENTS COSEICHicke Ryan
CHIEF EXECUTIVE OFFICER
17,500$48.47269,770
(Direct)
View
2026-01-01
Tax Withholding
2026-01-02
2:06 pm
N/A
N/A
SEI INVESTMENTS COSEICWEST ALFRED P JR
Chairman Emeritus
3,482$82.026,938,230
(Direct)
View
2025-12-30
Gift
2025-12-30
3:48 pm
N/A
N/A
SEI INVESTMENTS COSEICROMEO CARMEN
Director
15,500$01,560,293
(Direct)
View
2025-12-05
Tax Withholding
2025-12-29
11:06 am
N/A
N/A
SEI INVESTMENTS COSEICMCCARTHY KATHRYN
Director
24$81.2577,883
(Direct)
View
2025-12-05
Tax Withholding
2025-12-29
11:05 am
N/A
N/A
SEI INVESTMENTS COSEICPeterson Michael
EXECUTIVE VICE PRESIDENT
1,063$81.2520,419
(Direct)
View
2025-12-05
Tax Withholding
2025-12-29
11:04 am
N/A
N/A
SEI INVESTMENTS COSEICWEST ALFRED P JR
Executive Chairman
1,100$81.256,941,712
(Direct)
View
2025-12-05
Tax Withholding
2025-12-29
11:03 am
N/A
N/A
SEI INVESTMENTS COSEICWarner Mark Andrew
See Remarks
379$81.25921
(Direct)
View
2025-12-05
Tax Withholding
2025-12-29
11:01 am
N/A
N/A
SEI INVESTMENTS COSEICMcCabe Philip
See Remarks
1,094$81.2572,326
(Direct)
View
2025-12-12
Option Award
2025-12-16
4:13 pm
N/A
2035-12-12
SEI INVESTMENTS COSEICPeterson Michael
EXECUTIVE VICE PRESIDENT
50,711$064,482
(Direct)
View
2025-12-12
Option Award
2025-12-16
4:13 pm
N/A
2035-12-12
SEI INVESTMENTS COSEICDenham Sean
Executive Vice President, CFO
62,254$0114,753
(Direct)
View
2025-12-12
Option Award
2025-12-16
4:13 pm
N/A
2035-12-12
SEI INVESTMENTS COSEICLANE MICHAEL
Executive Vice President
58,566$091,836
(Direct)
View
2025-12-12
Option Award
2025-12-16
4:13 pm
N/A
2035-12-12
SEI INVESTMENTS COSEICMcCabe Philip
See Remarks
55,434$0120,420
(Direct)
View
2025-12-12
Option Award
2025-12-16
4:13 pm
N/A
2035-12-12
SEI INVESTMENTS COSEICHicke Ryan
CHIEF EXECUTIVE OFFICER
314,237$0500,223
(Direct)
View
2025-12-12
Option Award
2025-12-16
4:13 pm
N/A
2035-12-12
SEI INVESTMENTS COSEICSharma Sanjay
See Remarks*
62,934$089,198
(Direct)
View
2025-12-12
Option Award
2025-12-16
4:10 pm
N/A
N/A
SEI INVESTMENTS COSEICRisi Karin A.
Director
2,266$04,342
(Direct)
View
2025-12-12
Option Award
2025-12-16
4:10 pm
N/A
N/A
SEI INVESTMENTS COSEICGUARINO CARL
Director
2,266$018,308
(Direct)
View
2025-12-12
Option Award
2025-12-16
4:10 pm
N/A
N/A
SEI INVESTMENTS COSEICMCCARTHY KATHRYN
Director
2,266$077,907
(Direct)
View
2025-12-12
Option Award
2025-12-16
4:10 pm
N/A
N/A
SEI INVESTMENTS COSEICROMEO CARMEN
Director
2,266$01,575,793
(Direct)
View
2025-12-12
Option Award
2025-12-16
4:10 pm
N/A
N/A
SEI INVESTMENTS COSEICNaratil Thomas C.
Director
2,266$04,342
(Direct)
View
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