Key facts
- This page summarizes Alfred P. West Jr.'s Form 4 filing for SEI INVESTMENTS CO (SEIC).
- 4 reported transactions and 0 derivative rows are listed below.
- Accepted by SEC: 29 Jun 2026, 13:55.
Alfred P. West Jr. - 26 Jun 2026 Form 4 Insider Report for SEI INVESTMENTS CO (SEIC)
- Reporting relationship
- Chairman Emeritus
- Issuer ticker
- SEIC
- Reported as of
- 26 Jun 2026
- Net transaction value
- -$5,002,998
- SEC form
- 4
- Accepted by SEC
- 29 Jun 2026, 13:55:05 UTC
- Prior SEC filing
- 12 Mar 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Alfred P. West, Jr., by Diane Gallagher, attorney in fact
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Key filing fact
Alfred P. West Jr. filed Form 4 for SEI INVESTMENTS CO (SEIC) on 29 Jun 2026.
Change
- Previous filing in this sequence was filed on 12 Mar 2026.
- Current net transaction value: -$5,002,998.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001059374
Primary reporting owner
WEST ALFRED P JR
- Relationship
- Chairman Emeritus
- Address
- 1 FREEDOM VALLEY DRIVE, OAKS
- Signature
- /s/ Alfred P. West, Jr., by Diane Gallagher, attorney in fact
- Signature date
- 29 Jun 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
SEIC
transaction
Common Stock
Sale
- Transaction value
- $4,025,788
- Shares
- -46,162
- Change %
- -0.67%
- Price
- $87.21
- Shares after
- 6,829,621
- Date
- 26 Jun 2026
- Ownership
- Direct
- Footnotes
- F1
SEIC
transaction
Common Stock
Sale
- Transaction value
- $336,477
- Shares
- -3,838
- Change %
- -0.06%
- Price
- $87.67
- Shares after
- 6,825,783
- Date
- 26 Jun 2026
- Ownership
- Direct
- Footnotes
- F2
SEIC
transaction
Common Stock
Sale
- Transaction value
- $492,741
- Shares
- -5,652
- Change %
- -0.08%
- Price
- $87.18
- Shares after
- 6,820,131
- Date
- 29 Jun 2026
- Ownership
- Direct
- Footnotes
- F3
SEIC
transaction
Common Stock
Sale
- Transaction value
- $147,991
- Shares
- -1,680
- Change %
- -0.02%
- Price
- $88.09
- Shares after
- 6,818,451
- Date
- 29 Jun 2026
- Ownership
- Direct
- Footnotes
- F4
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 4 footnotes
Footnote F1
Represents the weighted average of a range of sale prices from $86.60 to $87.59. The reporting person undertakes to provide to the Staff of the Securities and Exchange Commission, the Company, or any stockholder of the Company, upon request, full information regarding the number of shares sold at each separate price.
Footnote F2
Represents the weighted average of a range of sale prices from $87.60 to $88.07. The reporting person undertakes to provide to the Staff of the Securities and Exchange Commission, the Company, or any stockholder of the Company, upon request, full information regarding the number of shares sold at each separate price.
Footnote F3
Represents the weighted average of a range of sale prices from $86.78 to $87.75. The reporting person undertakes to provide to the Staff of the Securities and Exchange Commission, the Company, or any stockholder of the Company, upon request, full information regarding the number of shares sold at each separate price.
Footnote F4
Represents the weighted average of a range of sale prices from $87.82 to $88.37. The reporting person undertakes to provide to the Staff of the Securities and Exchange Commission, the Company, or any stockholder of the Company, upon request, full information regarding the number of shares sold at each separate price.