Arkolith/Insider Trading/SEIC

SEIC Insider Trading

Sei Investments Co · full profile →Last filing Jun 29, 2026
Net Selling · 180d
Open-Market Buys (180d)
$0
0 insiders
Open-Market Sells (180d)
$23.6M
8 insiders
Net Insider Flow
-$23.6M
open market, 180d
Reporting Insiders
8
20 P/S transactions
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Build on these Form 4 transactions

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Recent Form 4 Transactions

100 shown
DateInsiderRoleActionSharesPriceValue
Jun 29, 2026West Alfred P JRInsiderSell(S)6K$87.18$493K
Jun 29, 2026West Alfred P JRInsiderSell(S)2K$88.09$148K
Jun 26, 2026West Alfred P JRInsiderSell(S)46K$87.21$4.0M
Jun 26, 2026West Alfred P JRInsiderSell(S)4K$87.67$336K
Jun 9, 2026Doran WilliamDirectorSell(S)5K$90.50$453K
May 4, 2026McCarthy KathrynDirectorOption exercise(M)5K$49.63$248K
May 4, 2026McCarthy KathrynDirectorOption exercise(M)5K$49.63$248K
May 4, 2026McCarthy KathrynDirectorSell(S)10K$91.07$911K
May 4, 2026McCarthy KathrynDirectorOption exercise(M)5K——
May 4, 2026McCarthy KathrynDirectorOption exercise(M)5K——
Apr 28, 2026Warner Mark AndrewIn RemarksOption exercise(M)4K$48.47$194K
Apr 28, 2026Warner Mark AndrewIn RemarksSell(S)4K$91.16$365K
Apr 28, 2026Warner Mark AndrewIn RemarksOption exercise(M)2K——
Apr 28, 2026Warner Mark AndrewIn RemarksOption exercise(M)2K——
Apr 23, 2026Peterson MichaelEXECUTIVE VICE PRESIDENTOption exercise(M)10K$48.47$485K
Apr 23, 2026Peterson MichaelEXECUTIVE VICE PRESIDENTSell(S)10K$90.00$900K
Apr 23, 2026Peterson MichaelEXECUTIVE VICE PRESIDENTOption exercise(M)10K——
Apr 23, 2026Sharma SanjaySee Remarks*Option exercise(M)13K$49.63$620K
Apr 23, 2026Sharma SanjaySee Remarks*Option exercise(M)13K$49.63$620K
Apr 23, 2026Sharma SanjaySee Remarks*Sell(S)23K$90.08$2.1M
Apr 23, 2026Sharma SanjaySee Remarks*Sell(S)2K$90.73$141K
Apr 23, 2026Sharma SanjaySee Remarks*Option exercise(M)13K——
Apr 23, 2026Sharma SanjaySee Remarks*Option exercise(M)13K——
Apr 23, 2026McCabe PhilipSee RemarksSell(S)15K$91.82$1.4M
Mar 31, 2026Hicke RyanCHIEF EXECUTIVE OFFICER, DirectorTax withholding(F)4K$77.21$336K
Mar 18, 2026Denham SeanExecutive VP, CFO, COOTax withholding(F)8K$78.77$604K
Mar 11, 2026West Alfred P JRInsiderSell(S)6K$79.11$481K
Mar 11, 2026West Alfred P JRInsiderSell(S)1K$79.94$110K
Mar 10, 2026West Alfred P JRInsiderSell(S)29K$80.47$2.4M
Mar 10, 2026West Alfred P JRInsiderSell(S)25K$79.97$2.0M
Mar 10, 2026West Alfred P JRInsiderSell(S)178$78.88$14K
Feb 25, 2026Warner Mark AndrewInsiderGrant(A)2K$71.12$142K
Feb 25, 2026Warner Mark AndrewInsiderSell(S)4K$81.74$327K
Feb 25, 2026Warner Mark AndrewInsiderGrant(A)2K$71.12$142K
Feb 25, 2026Warner Mark AndrewInsiderOption exercise(M)2K——
Feb 25, 2026Warner Mark AndrewInsiderOption exercise(M)2K——
Jan 29, 2026Hicke RyanCHIEF EXECUTIVE OFFICER, DirectorSell(S)50K$87.39$4.4M
Jan 29, 2026Hicke RyanCHIEF EXECUTIVE OFFICER, DirectorOption exercise(M)13K$71.12$889K
Jan 29, 2026Hicke RyanCHIEF EXECUTIVE OFFICER, DirectorOption exercise(M)13K$71.12$889K
Jan 29, 2026Hicke RyanCHIEF EXECUTIVE OFFICER, DirectorOption exercise(M)20K$64.43$1.3M
Jan 29, 2026Hicke RyanCHIEF EXECUTIVE OFFICER, DirectorSell(S)13K$88.06$1.1M
Jan 29, 2026Hicke RyanCHIEF EXECUTIVE OFFICER, DirectorOption exercise(M)18K$48.47$848K
Jan 29, 2026Hicke RyanCHIEF EXECUTIVE OFFICER, DirectorSell(S)17K$86.75$1.5M
Jan 29, 2026Hicke RyanCHIEF EXECUTIVE OFFICER, DirectorOption exercise(M)18K$56.54$989K
Jan 29, 2026Hicke RyanCHIEF EXECUTIVE OFFICER, DirectorOption exercise(M)13K——
Jan 29, 2026Hicke RyanCHIEF EXECUTIVE OFFICER, DirectorOption exercise(M)20K——
Jan 29, 2026Hicke RyanCHIEF EXECUTIVE OFFICER, DirectorOption exercise(M)18K——
Jan 29, 2026Hicke RyanCHIEF EXECUTIVE OFFICER, DirectorOption exercise(M)18K——
Jan 29, 2026Hicke RyanCHIEF EXECUTIVE OFFICER, DirectorOption exercise(M)13K——
Jan 1, 2026West Alfred P JRInsiderTax withholding(F)3K$82.02$286K
Dec 30, 2025Romeo CarmenDirectorGift(G)16K—$0
Dec 22, 2025Doran WilliamDirectorSell(S)7K$83.85$587K
Dec 12, 2025Doran WilliamDirectorGrant(A)2K——
Dec 12, 2025Brassington JonathanDirectorGrant(A)2K——
Dec 12, 2025Naratil Thomas C.DirectorGrant(A)2K——
Dec 12, 2025Romeo CarmenDirectorGrant(A)2K——
Dec 12, 2025McCarthy KathrynDirectorGrant(A)2K——
Dec 12, 2025Guarino CarlDirectorGrant(A)2K——
Dec 12, 2025Risi Karin A.DirectorGrant(A)2K——
Dec 12, 2025Sharma SanjaySee Remarks*Grant(A)8K——
Dec 12, 2025Sharma SanjaySee Remarks*Grant(A)8K——
Dec 12, 2025Sharma SanjaySee Remarks*Grant(A)47K——
Dec 12, 2025Hicke RyanCHIEF EXECUTIVE OFFICER, DirectorGrant(A)26K——
Dec 12, 2025Hicke RyanCHIEF EXECUTIVE OFFICER, DirectorGrant(A)288K——
Dec 12, 2025McCabe PhilipSee RemarksGrant(A)8K——
Dec 12, 2025McCabe PhilipSee RemarksGrant(A)47K——
Dec 12, 2025Lane MichaelExecutive Vice PresidentGrant(A)9K——
Dec 12, 2025Lane MichaelExecutive Vice PresidentGrant(A)50K——
Dec 12, 2025Denham SeanExecutive Vice President, CFOGrant(A)13K——
Dec 12, 2025Denham SeanExecutive Vice President, CFOGrant(A)49K——
Dec 12, 2025Peterson MichaelEXECUTIVE VICE PRESIDENTGrant(A)8K——
Dec 12, 2025Peterson MichaelEXECUTIVE VICE PRESIDENTGrant(A)43K——
Dec 5, 2025McCabe PhilipSee RemarksTax withholding(F)1K$81.25$89K
Dec 5, 2025Warner Mark AndrewInsiderTax withholding(F)379$81.25$31K
Dec 5, 2025West Alfred P JRExecutive Chairman, DirectorTax withholding(F)1K$81.25$89K
Dec 5, 2025Peterson MichaelEXECUTIVE VICE PRESIDENTTax withholding(F)1K$81.25$86K
Dec 5, 2025McCarthy KathrynDirectorTax withholding(F)24$81.25$2K
Dec 4, 2025McCabe PhilipSee RemarksOption exercise(M)12K$53.34$640K
Dec 4, 2025McCabe PhilipSee RemarksSell(S)12K$81.11$973K
Dec 4, 2025McCabe PhilipSee RemarksOption exercise(M)12K——
Dec 3, 2025West Alfred P JRExecutive Chairman, DirectorSell(S)25K$80.87$2.0M
Dec 3, 2025West Alfred P JRExecutive Chairman, DirectorOption exercise(M)30K$53.34$1.6M
Dec 3, 2025West Alfred P JRExecutive Chairman, DirectorOption exercise(M)30K——
Nov 17, 2025Doran WilliamDirectorOption exercise(M)10K$53.34$533K
Nov 17, 2025Doran WilliamDirectorOption exercise(M)5K——
Nov 17, 2025Doran WilliamDirectorOption exercise(M)5K——
Nov 12, 2025Peterson MichaelEXECUTIVE VICE PRESIDENTSell(S)25K$84.21$2.1M
Nov 12, 2025Peterson MichaelEXECUTIVE VICE PRESIDENTOption exercise(M)25K$54.34$1.4M
Nov 12, 2025Peterson MichaelEXECUTIVE VICE PRESIDENTOption exercise(M)25K——
Nov 11, 2025Romeo CarmenDirectorSell(S)5K$84.01$420K
Nov 11, 2025Romeo CarmenDirectorOption exercise(M)5K$53.34$267K
Nov 11, 2025Romeo CarmenDirectorOption exercise(M)5K——
Oct 24, 2025McCabe PhilipSee RemarksOption exercise(M)12K$53.34$640K
Oct 24, 2025McCabe PhilipSee RemarksOption exercise(M)12K——
Sep 29, 2025McCarthy KathrynDirectorSell(S)10K$85.66$857K
Sep 29, 2025McCarthy KathrynDirectorOption exercise(M)10K$53.34$533K
Sep 29, 2025McCarthy KathrynDirectorOption exercise(M)5K——
Sep 29, 2025McCarthy KathrynDirectorOption exercise(M)5K——
Sep 23, 2025Guarino CarlDirectorOption exercise(M)10K$53.34$533K
Sep 23, 2025Guarino CarlDirectorSell(S)10K$86.41$864K

Data Source

Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.

Coverage: Form 4 filings indexed 2021-03-29 → 2026-07-11. Earlier history is backfilling; this window widens as it deepens.

Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).