Investor · Durham, NC

Daniel G. Estay

Open Daniel in the network graph →

Filings

32

SEC Form D

Connections

181

co-filers

Capital

$57.5M

across filings

Active

Dec 2011

to Oct 2025

Most-connected co-filers (181)

Kenneth G. Langone · Durham, NC23 shared Stephen H. Penman · Stamford, CT21 shared Virginia G. Breen · Stamford, CT21 shared Robert S. Langer · Durham, NC20 shared Hemant E. Taneja · San Francisco, CA18 shared Robert N. Jenkins · New York, NY18 shared Joel E. Cutler · Cambridge, MA16 shared David P. Fialkow · Cambridge, MA16 shared Lee B. Trink · Los Angeles, CA14 shared William L. Myrick · Jacksonville, FL14 shared Kenneth E. Chenault · Cambridge, MA14 shared John G. Lowry · Durham, NC13 shared General Catalyst Group Management, Llc · Cambridge, MA12 shared General Catalyst Group Management, Llc · Cambridge, MA12 shared Julia L. Yan · VANCOUVER, British Columbia, Canada12 shared Stephen A. Herrod · Palo Alto, CA11 shared Dylan J. Germishuys · Stamford, CT11 shared Derek S. Mcspadden · SAN DIEGO, CA11 shared Larry Bohn · Cambridge, MA9 shared Adam A. Valkin · Cambridge, MA9 shared Roderick S. Curtis · Oak Brook, IL9 shared Meyer G. Feldberg · Stamford, CT9 shared Trevor H. Oelschig · Palo Alto, CA7 shared Mark M. Mitchell · Greenwich, CT7 shared

Recent filings (32)

GC VG Ventures, LPOct 2025 · 15 co-filers GC Customer Value Fund Feeder, L.P.Sep 2025 · 16 co-filers VQ Biomedical, Inc.Mar 2025 · 9 co-filers$1.6M VQ Biomedical, Inc.Mar 2025 · 9 co-filers$1.6M SonoVascular, Inc.Jan 2023 · 4 co-filers$2.2M Applaud Medical, Inc.Jul 2022 · 23 co-filers$16.0M SonoVascular, Inc.Jan 2022 · 2 co-filers$2.0M General Catalyst Group X - Health Assurance, L.P.Apr 2021 · 44 co-filers$600.0M Clean Age Technology, Inc.Feb 2021 · 5 co-filers$500K Clean Age Technology, Inc.Feb 2021 · 5 co-filers Applaud Medical, Inc.Feb 2021 · 19 co-filers$34.6M General Catalyst Group X - Health Assurance, L.P.Feb 2021 · 44 co-filers$600.0M GC Health Assurance Holdings, LLCDec 2020 · 17 co-filers GC Venture X, LLCNov 2020 · 17 co-filers$50.0M General Catalyst Group X - Early Venture, L.P.Apr 2020 · 43 co-filers$600.0M General Catalyst Group X - Growth Venture, L.P.Apr 2020 · 47 co-filers$1.0B General Catalyst Group X - Endurance, L.P.Apr 2020 · 47 co-filers$700.0M GC Venture V-B, LLCDec 2019 · 19 co-filers$10.0M 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 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 MICELL TECHNOLOGIES INCApr 2017 · 20 co-filers$35.0M

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