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Who

Alfred P. West Jr.

Other role

Company insider

Files Form 4 as: Executive Chairman, SEI Investments.

Every Form 4 they filed

In numbers

Trades disclosed
1,186
Buys
0
Sells
238
Bought
$0
Sold
$546.7M
Companies
1
Companies where not an officer
0
First trade
10 Feb 2006
Last trade
30 Sep 2026
Last filed
1 Oct 2026

Companies traded

Where they are an officer
SEIC SEI InvestmentsDirector, Officer, 10% owner, Other · Capital Markets & Asset Management · last 30 Sep 20260 buys · 238 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
40Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
30 Sep 2026filed 1 Oct 2026SEIC SEI InvestmentsCapital Markets & Asset ManagementSEC FORM 4 Sold$566K5,483 at $103.16filing
29 Sep 2026filed 1 Oct 2026SEIC SEI InvestmentsCapital Markets & Asset ManagementSEC FORM 4 Sold$2.9M28,394 at $103.40filing
29 Jun 2026filed 29 Jun 2026SEIC SEI InvestmentsCapital Markets & Asset ManagementSEC FORM 4 Sold$493K5,652 at $87.18filing
29 Jun 2026filed 29 Jun 2026SEIC SEI InvestmentsCapital Markets & Asset ManagementSEC FORM 4 Sold$148K1,680 at $88.09filing
29 Jun 2026filed 29 Jun 2026SEIC SEI InvestmentsCapital Markets & Asset ManagementSEC FORM 4 Sold$493K5,652 at $87.18filing
29 Jun 2026filed 29 Jun 2026SEIC SEI InvestmentsCapital Markets & Asset ManagementSEC FORM 4 Sold$148K1,680 at $88.09filing
26 Jun 2026filed 29 Jun 2026SEIC SEI InvestmentsCapital Markets & Asset ManagementSEC FORM 4 Sold$4.0M46,162 at $87.21filing
26 Jun 2026filed 29 Jun 2026SEIC SEI InvestmentsCapital Markets & Asset ManagementSEC FORM 4 Sold$336K3,838 at $87.67filing
26 Jun 2026filed 29 Jun 2026SEIC SEI InvestmentsCapital Markets & Asset ManagementSEC FORM 4 Sold$4.0M46,162 at $87.21filing
26 Jun 2026filed 29 Jun 2026SEIC SEI InvestmentsCapital Markets & Asset ManagementSEC FORM 4 Sold$336K3,838 at $87.67filing
11 Mar 2026filed 12 Mar 2026SEIC SEI InvestmentsCapital Markets & Asset ManagementSEC FORM 4 Sold$481K6,076 at $79.11filing
11 Mar 2026filed 12 Mar 2026SEIC SEI InvestmentsCapital Markets & Asset ManagementSEC FORM 4 Sold$110K1,371 at $79.94filing
11 Mar 2026filed 12 Mar 2026SEIC SEI InvestmentsCapital Markets & Asset ManagementSEC FORM 4 Sold$481K6,076 at $79.11filing
11 Mar 2026filed 12 Mar 2026SEIC SEI InvestmentsCapital Markets & Asset ManagementSEC FORM 4 Sold$110K1,371 at $79.94filing
10 Mar 2026filed 12 Mar 2026SEIC SEI InvestmentsCapital Markets & Asset ManagementSEC FORM 4 Sold$14K178 at $78.88filing
10 Mar 2026filed 12 Mar 2026SEIC SEI InvestmentsCapital Markets & Asset ManagementSEC FORM 4 Sold$2.0M25,391 at $79.97filing
10 Mar 2026filed 12 Mar 2026SEIC SEI InvestmentsCapital Markets & Asset ManagementSEC FORM 4 Sold$2.4M29,431 at $80.47filing
10 Mar 2026filed 12 Mar 2026SEIC SEI InvestmentsCapital Markets & Asset ManagementSEC FORM 4 Sold$14K178 at $78.88filing
10 Mar 2026filed 12 Mar 2026SEIC SEI InvestmentsCapital Markets & Asset ManagementSEC FORM 4 Sold$2.0M25,391 at $79.97filing
10 Mar 2026filed 12 Mar 2026SEIC SEI InvestmentsCapital Markets & Asset ManagementSEC FORM 4 Sold$2.4M29,431 at $80.47filing

The newest 500 lines are listed; the numbers count every line.

Sectors

Financials238

Buys in green, sells in red, by the company’s sector.

Related people

Michael LaneExecutive Vice President · Executive Vice President at Sei Investments Co, filing Form 4 there in the last year
Ryan HickeChief Executive Officer · Chief Executive Officer at Sei Investments Co, filing Form 4 there in the last year
Carmen RomeoDirector · Director at Sei Investments Co, filing Form 4 there in the last year
Michael PetersonExecutive Vice President · Executive Vice President at Sei Investments Co, filing Form 4 there in the last year
Philip McCabeOfficer · Officer at Sei Investments Co, filing Form 4 there in the last year
Kathryn McCarthyDirector · Also traded SEIC in the last 90 days
Carl GuarinoDirector · Also traded SEIC in the last 90 days
Mark Andrew WarnerSee Remarks* · Also traded SEIC in the last 90 days