Investor · Stamford, CT

Stephen H. Penman

Open Stephen in the network graph →

Filings

59

SEC Form D

Connections

228

co-filers

Capital

$1.6B

across filings

Active

Dec 2011

to Oct 2025

Most-connected co-filers (228)

Virginia G. Breen · Stamford, CT48 shared Meyer G. Feldberg · Stamford, CT32 shared George W. Gowen · Stamford, CT26 shared Dylan J. Germishuys · Stamford, CT24 shared Daniel G. Estay · Durham, NC21 shared Kenneth G. Langone · Durham, NC21 shared Frank S. Pluchino · Stamford, CT21 shared Hemant E. Taneja · San Francisco, CA18 shared Robert N. Jenkins · New York, NY18 shared Robert S. Langer · Durham, NC18 shared Joel E. Cutler · Cambridge, MA16 shared David P. Fialkow · Cambridge, MA16 shared William L. Myrick · Jacksonville, FL14 shared Lee B. Trink · Los Angeles, CA14 shared William J. Ferri · Stamford, CT14 shared Kenneth E. Chenault · Cambridge, MA14 shared Julia L. Yan · VANCOUVER, British Columbia, Canada12 shared General Catalyst Group Management, Llc · Cambridge, MA12 shared Robert F. Aufenanger · New York, NY12 shared General Catalyst Group Management, Llc · Cambridge, MA12 shared John G. Lowry · Durham, NC11 shared Derek S. Mcspadden · SAN DIEGO, CA11 shared Stephen A. Herrod · Palo Alto, CA11 shared Roderick S. Curtis · Oak Brook, IL9 shared

Recent filings (59)

GC VG Ventures, LPOct 2025 · 15 co-filers GC Customer Value Fund Feeder, L.P.Sep 2025 · 16 co-filers A&Q Technology Fund LLCNov 2022 · 14 co-filers A&Q Technology Fund LLCNov 2021 · 17 co-filers General Catalyst Group X - Health Assurance, L.P.Apr 2021 · 44 co-filers$600.0M General Catalyst Group X - Health Assurance, L.P.Feb 2021 · 44 co-filers$600.0M RiverNorth Institutional Partners, L.P.Jan 2021 · 12 co-filers GC Health Assurance Holdings, LLCDec 2020 · 17 co-filers GC Venture X, LLCNov 2020 · 17 co-filers$50.0M A&Q Technology Fund LLCNov 2020 · 20 co-filers General Catalyst Group X - Growth Venture, L.P.Apr 2020 · 47 co-filers$1.0B General Catalyst Group X - Early Venture, L.P.Apr 2020 · 43 co-filers$600.0M General Catalyst Group X - Endurance, L.P.Apr 2020 · 47 co-filers$700.0M RiverNorth Institutional Partners, L.P.Jan 2020 · 12 co-filers GC Venture V-B, LLCDec 2019 · 19 co-filers$10.0M A&Q Technology Fund LLCNov 2019 · 20 co-filers GC Venture V, LLCNov 2019 · 19 co-filers$14.7M GC Venture (S)-B, LLCOct 2019 · 18 co-filers$41.0M GC Venture VIII-B, LLCSep 2019 · 11 co-filers$95.0M GC Venture LH, LLCJul 2019 · 11 co-filers$75.0M RiverNorth Institutional Partners, L.P.Jan 2019 · 12 co-filers A&Q Technology Fund LLCNov 2018 · 20 co-filers GC Entrepreneurs Fund IX, L.P.Apr 2018 · 43 co-filers$20.0M General Catalyst Group IX, L.P.Mar 2018 · 43 co-filers$1.4B A&Q Technology Fund LLCNov 2017 · 20 co-filers

Derived from public SEC Form D (Reg D) filings; entities resolved probabilistically. See Stephen in the interactive graph →