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SEI Investments Co

SEIC
Exchange
Nasdaq
Industry
Security Brokers, Dealers & Flotation Companies
SEC CIK
0000350894

In the last 90 days, SEI Investments Co insiders filed 0 open-market purchases and 10 sales; 575 institutions reported holding it in 13F filings for Q2 2026, worth $7.94B in total; Markel Group is the only superinvestor holding it.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by SEI Investments Co insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
0 filings
Open-market sells
10 filings
9 insiders, $20.4M in total
Insiders trading
9
Net value
−$20.4M
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for SEI Investments Co, current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for SEI Investments Co
NameTitleLast reported holdingLast filingFilings, past year
Lane MichaelExecutive Vice President39,581Sep 24, 20262
Hicke RyanChief Executive Officer192,815Sep 8, 20264
Romeo CarmenDirector1,560,293Sep 3, 20264
Peterson MichaelExecutive Vice President20,148Sep 1, 20266
McCabe PhilipSee Remarks54,884Aug 6, 20266
McCarthy KathrynDirector77,883Aug 4, 20265
Warner Mark AndrewSee Remarks*921Jul 30, 20264
Guarino CarlDirector18,308Jul 30, 20262
Sharma SanjaySee Remarks*39,829Jul 28, 20263
Shah Sneha S.See Remarks*14,092Jul 28, 20261
West Alfred P JrOther: Chairman Emeritus6,818,451Jun 29, 20265
Doran WilliamDirector618,802Jun 11, 20264
Denham SeanExecutive VP, CFO, COO57,758Mar 19, 20262
Brassington JonathanDirector6,207Dec 16, 20251
Naratil Thomas C.Director4,342Dec 16, 20251
Risi Karin A.Director4,342Dec 16, 20251
Miller Stephanie D.Director3,941Dec 16, 20240
Klauder PaulEXECUTIVE VICE PRESIDENT20,752Mar 28, 20240
Withrow WayneEXECUTIVE VICE PRESIDENT55,399Feb 9, 20240
McGonigle DennisEVP, CFO594,163Sep 1, 20230
Blumenstein SarahDirector6,447Feb 22, 20230
Barr KevinExecutive Vice President204,741Dec 12, 20220
Heilig KathyTreasurer1,891Nov 21, 20220
Meyer StephenEXECUTIVE VICE PRESIDENT186,224Dec 14, 20210

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Nov 4, 2021 (view filing)Nov 31 dayMcGonigle DennisEXECUTIVE VICE PRESIDENTSSale−17.5K$62.79−$1.10M−2.9%576.7K after
Nov 4, 2021 (view filing)Nov 13 daysLateWithrow WayneEXECUTIVE VICE PRESIDENTSSale−4.00K$63.10−$252.4K−9.3%38.8K after
Nov 4, 2021 (view filing)Nov 13 daysLateWithrow WayneEXECUTIVE VICE PRESIDENTSSale−3.00K$63.95−$191.8K−7.2%38.8K after
Nov 12, 2021 (view filing)Nov 93 daysWithrow WayneEXECUTIVE VICE PRESIDENTSSale−1.47K$64.30−$94.5K−3.7%38.8K after
Nov 12, 2021 (view filing)Nov 102 daysWithrow WayneEXECUTIVE VICE PRESIDENTSSale−4.00K$64.47−$257.9K−9.3%38.8K after
Nov 23, 2021 (view filing)Nov 167 daysLateWithrow WayneEXECUTIVE VICE PRESIDENTSSale−4.00K$65.00−$260.0K−9.3%38.8K after
Dec 2, 2021 (view filing)Nov 302 daysBarr KevinEXECUTIVE VICE PRESIDENTSSale−40.0K$59.63−$2.39M−21.7%144.7K after
Dec 10, 2021 (view filing)Dec 8-92 daysWest Alfred P Jr10% OwnerSSale−132.3K$61.16−$8.09M−1.4%9.22M after2 lots
Aug 1, 2022 (view filing)Jul 293 daysMcGonigle DennisEXECUTIVE PRESIDENTSSale−35.0K$55.15−$1.93M−5.7%576.7K after
Aug 10, 2022 (view filing)Aug 91 dayWithrow WayneEXECUTIVE VICE PRESIDENTSSale−15.0K$55.78−$836.7K−27.9%38.8K after
Sep 21, 2022 (view filing)Sep 15-166 daysLateWest Alfred P Jr10% OwnerSSale−158.4K$54.41−$8.62M−1.7%9.06M after2 lots
Nov 1, 2022 (view filing)Nov 1Same dayWithrow WayneEXECUTIVE VICE PRESIDENTSSale−15.0K$54.51−$817.6K−27.9%38.8K after
Nov 21, 2022 (view filing)Nov 17-184 daysHeilig KathyTreasurerSSale−12.5K$61.00−$762.5K−86.9%1.89K after2 lots
Dec 12, 2022 (view filing)Dec 66 daysLateBarr KevinExecutive Vice PresidentSSale−10.0K$62.00−$620.0K−5.4%174.7K after
Dec 16, 2022 (view filing)Dec 14-152 daysWest Alfred P JrExecutive ChairmanSSale−63.4K$60.06−$3.81M−0.7%9.05M after3 lots
Dec 20, 2022 (view filing)Dec 16-194 daysWest Alfred P JrExecutive ChairmanSSale−106.9K$58.04−$6.20M−1.2%8.94M after3 lots
Dec 22, 2022 (view filing)Dec 211 dayMcCarthy KathrynDirectorSSale−10.0K$59.25−$592.5K−12.2%71.7K after
Feb 8, 2023 (view filing)Feb 6-82 daysWest Alfred P JrExecutive ChairmanSSale−128.3K$63.47−$8.15M−1.4%8.81M after5 lots
Feb 9, 2023 (view filing)Feb 9Same dayWest Alfred P JrExecutive ChairmanSSale−29.6K$62.99−$1.86M−0.3%8.78M after2 lots
Feb 22, 2023 (view filing)Feb 17-215 daysBlumenstein SarahDirectorSSale−35.0K$60.94−$2.13M−84.4%6.45K after3 lots
Mar 27, 2023 (view filing)Mar 23-27, 2022369 daysLateWest Alfred P JrExecutive ChairmanSSale−202.4K$55.51−$11.2M−2.3%8.58M after3 lots
Mar 29, 2023 (view filing)Mar 29Same dayWest Alfred P JrExecutive ChairmanSSale−15.7K$56.06−$877.8K−0.2%8.57M after
Apr 5, 2023 (view filing)Feb 262 daysSharma SanjaySee Remarks*SSale−9.00K$64.14−$577.3K−41.1%12.9K afterAmended
Jun 22, 2023 (view filing)Jun 20-222 daysWest Alfred P JrExecutive ChairmanSSale−146.6K$58.50−$8.58M−1.7%8.42M after3 lots
Jun 26, 2023 (view filing)Jun 233 daysWest Alfred P JrExecutive ChairmanSSale−60.3K$56.96−$3.43M−0.7%8.36M after
Jun 30, 2023 (view filing)Jun 282 daysHicke RyanChief Executive OfficerSSale−23.23$58.68−$1.36K0.0%82.6K after
Jul 31, 2023 (view filing)Jul 274 daysWithrow WayneExecutive Vice PresidentSSale−10.0K$62.74−$627.4K−15.3%55.4K after
Jul 31, 2023 (view filing)Jul 283 daysPeterson MichaelEVP and General CounselSSale−10.0K$63.20−$632.0K−80.0%2.50K after
Sep 1, 2023 (view filing)Aug 302 daysMcGonigle DennisEVP, CFOSSale−30.0K$62.22−$1.87M−4.8%594.2K after
Sep 11, 2023 (view filing)Sep 83 daysMcCarthy KathrynDirectorSSale−10.0K$60.58−$605.8K−12.1%72.5K after
Sep 13, 2023 (view filing)Sep 11-132 daysWest Alfred P JrExecutive ChairmanSSale−132.4K$60.45−$8.01M−1.6%8.23M after4 lots
Sep 21, 2023 (view filing)Sep 19-202 daysWithrow WayneExecutive Vice PresidentSSale−11.1K$62.01−$686.8K−16.7%55.4K after2 lots
Sep 21, 2023 (view filing)Sep 192 daysPeterson MichaelEVP and General CounselSSale−25.0K$61.29−$1.53M−90.9%2.50K after
Nov 21, 2023 (view filing)Nov 17-214 daysWest Alfred P JrExecutive ChairmanSSale−188.6K$57.99−$10.9M−2.3%8.04M after3 lots
Nov 21, 2023 (view filing)Nov 21Same dayWithrow WayneEXECUTIVE VICE PRESIDENTSSale−8.92K$58.00−$517.6K−13.9%55.4K after
Nov 22, 2023 (view filing)Nov 22Same dayWest Alfred P JrExecutive ChairmanSSale−18.6K$57.91−$1.07M−0.2%8.02M after
Dec 4, 2023 (view filing)Dec 13 daysRomeo CarmenDirectorSSale−5.00K$59.00−$295.0K−0.3%1.59M after
Dec 4, 2023 (view filing)Dec 1-43 daysWest Alfred P JrExecutive ChairmanSSale−34.0K$59.81−$2.04M−0.4%8.03M after3 lots
Feb 7, 2024 (view filing)Feb 5-62 daysWithrow WayneEXECUTIVE VICE PRESIDENTSSale−18.0K$65.89−$1.19M−24.6%55.4K after2 lots
Feb 9, 2024 (view filing)Feb 72 daysWithrow WayneEXECUTIVE VICE PRESIDENTSSale−17.0K$66.16−$1.12M−23.4%55.4K after2 lots
Feb 14, 2024 (view filing)Feb 122 daysSharma SanjaySee Remarks*SSale−15.0K$67.20−$1.01M−47.0%16.9K after
Feb 26, 2024 (view filing)Feb 233 daysWarner Mark AndrewOther: See RemarksSSale−3.00K$67.31−$201.9K−69.8%1.30K after
Mar 28, 2024 (view filing)Mar 820 daysLateKlauder PaulEXECUTIVE VICE PRESIDENTSSale−2.00K$69.80−$139.6K−8.8%20.8K after
Mar 28, 2024 (view filing)Mar 262 daysWest Alfred P JrExecutive ChairmanSSale−150.0K$70.75−$10.6M−1.9%7.88M after
Apr 1, 2024 (view filing)Mar 284 daysWest Alfred P JrExecutive ChairmanSSale−19.4K$72.14−$1.40M−0.2%7.87M after
May 13, 2024 (view filing)May 9-104 daysWest Alfred P JrExecutive ChairmanSSale−140.0K$68.61−$9.61M−1.8%7.73M after2 lots
May 14, 2024 (view filing)May 13-141 dayWest Alfred P JrExecutive ChairmanSSale−48.5K$68.09−$3.30M−0.6%7.68M after2 lots
Jun 25, 2024 (view filing)Jun 241 dayDoran WilliamDirectorSSale−5.00K$67.04−$335.2K−0.8%656.4K after
Aug 27, 2024 (view filing)Aug 23-264 daysWest Alfred P JrExecutive ChairmanSSale−71.6K$67.52−$4.83M−0.9%7.61M after2 lots
Aug 28, 2024 (view filing)Aug 27-281 dayWest Alfred P JrExecutive ChairmanSSale−101.1K$67.18−$6.79M−1.3%7.50M after2 lots