Investor · Chicago, IL
William P. Johnstone
Open William in the network graph →Capital
$141.1M
across filings
Active
Aug 2022
to Sep 2025
Most-connected co-filers (65)
Robert J. Castillo · Chicago, IL9 sharedMatthew P. Steffen · Chicago, IL7 sharedDustin P. Stitgen · Chicago, IL7 sharedThomas P. Harrison · Chicago, IL7 sharedKurt Kuhlmann · Palo Alto, CA4 sharedP. G. Zimmer, Jr · Irvine, CA4 sharedJennifer E. Baumann · Irvine, CA4 sharedSidarth Kapoor · New York, NY4 sharedTed C. Filley · Irvine, CA4 sharedPeter S. Carpenter · Irvine, CA4 sharedRalph S. Hurst · Irvine, CA4 sharedMichael Mcninch · Washington, Washington, D.C.4 sharedCasey Gard · Bal Harbour, FL4 sharedThomas W. Corbett · Irvine, CA4 sharedJames R. Matthews · New York, NY4 sharedJames W. Crystal · New York, NY4 sharedJames D. Carey · Greenwich, CT4 sharedMichael Randofi · San Mateo, CA4 sharedCarrie Teffner · San Mateo, CA4 sharedPhilip Moldavski · CARLSTADT, NJ4 sharedIlene E. Anders · Irvine, CA4 sharedJill S. Kendrick · Washington, Washington, D.C.4 sharedJoel Van Dusen · Calgary, Alberta, Canada4 sharedShekar G. Nair · Lewes, DE4 shared Recent filings (12)
Alliant Holdings, L.P.Sep 2025 · 39 co-filersThirteen Partners Private Equity 10, L.P.Jun 2025 · 2 co-filersInvision Capital III, L.P.Jan 2025 · 18 co-filersInvision Capital III, L.P.Jan 2025 · 18 co-filersAlliant Holdings, L.P.Sep 2024 · 37 co-filersThirteen Partners Direct SPV 5, LLCApr 2024 · 2 co-filersThirteen Partners Private Equity 10, L.P.Feb 2024 · 2 co-filersInvision Capital III, L.P.Feb 2024 · 18 co-filersInvision Capital III, L.P.Feb 2024 · 18 co-filersAlliant Holdings, L.P.Sep 2023 · 36 co-filersAlliant Holdings, L.P.Sep 2022 · 36 co-filersPrecision Medical Ventures Inc.Sep 2022 · 14 co-filers$1.3MPrecision Medical Ventures Inc.Aug 2022 · 14 co-filers$500KINVISION CAPITAL III-A, L.P.Mar 2022 · 15 co-filersINVISION CAPITAL III-A, L.P.Mar 2022 · 15 co-filers Derived from public SEC Form D (Reg D) filings; entities resolved probabilistically. See William in the interactive graph →