Investor · Ellington, CT

Martin R. Spartz

Open Martin in the network graph →

Filings

24

SEC Form D

Connections

99

co-filers

Capital

$3.1M

across filings

Active

Jan 2023

to Nov 2025

Most-connected co-filers (99)

David R. Wilson · Ellington, CT15 shared Thomas E. Claugus · Atlanta, GA9 shared Barbara R. Spartz · Ellington, CT9 shared Grant Innes · New York, NY9 shared Harold Randall · Atlanta, GA8 shared Brandon Turner · Atlanta, GA7 shared Brian Murray · Atlanta, GA7 shared Luc Regent · Grand Duchy of Luxembourg, Luxembourg7 shared Stephanie Bird · Toronto, Ontario, Canada7 shared Nicolas Blitterswyk · Toronto, Ontario, Canada7 shared Chris Asimakis · Toronto, Ontario, Canada7 shared James W. Rogers · Athens, GA7 shared Lisa B. Schwarzberg · Boston, MA7 shared Keten Patel · Halifax, Nova Scotia, Canada7 shared Yun "Wendy" Liu · Toronto, Ontario, Canada7 shared Jae Park · Atlanta, GA7 shared John A. Shimp · Charlotte, NC7 shared Stephen Blum · Toronto, Ontario, Canada7 shared Walker Meadows · Atlanta, GA6 shared John J. Purcell · Charlotte, NC6 shared Jian Yang · Toronto, Ontario, Canada6 shared Michael B. Williams · Atlanta, GA6 shared Xiangrong Xie · Toronto, Ontario, Canada6 shared Stephen C. Markscheid · Irvine, CA5 shared

Recent filings (24)

PAVmed Inc.Feb 2026 · 8 co-filers$60.0M Ellington Valley Technologies, Inc.Nov 2025 · 8 co-filers$910K Ellington Valley Technologies, Inc.Nov 2025 · 8 co-filers$910K Veris Health Inc.Jul 2025 · 6 co-filers$2.5M Ellington Valley Technologies, Inc.Jun 2025 · 8 co-filers$3.8M Ellington Valley Technologies, Inc.Jun 2025 · 8 co-filers$3.8M BAY RESOURCE PARTNERS LPJun 2025 · 8 co-filers BAY II RESOURCE PARTNERS LPJun 2025 · 8 co-filers BAY RESOURCE PARTNERS OFFSHORE FUND LTDJun 2025 · 17 co-filers Ellington Valley Technologies, Inc.May 2025 · 8 co-filers$71K Ellington Valley Technologies, Inc.May 2025 · 8 co-filers$71K Ellington Valley Technologies, Inc.Apr 2025 · 8 co-filers$61K Ellington Valley Technologies, Inc.Apr 2025 · 8 co-filers$61K PAVmed Inc.Feb 2025 · 14 co-filers$2.7M Endicott Capital II, L.P.Jun 2024 · 15 co-filers Dogcentric Ventures, Inc.Apr 2024 · 11 co-filers$10.0M UGE International Ltd.Feb 2024 · 20 co-filers$555K UGE International Ltd.Jan 2024 · 26 co-filers$557K PRISA LHC NC REIT, LLCJan 2024 · 15 co-filers$125K Dogcentric Ventures, Inc.Dec 2023 · 8 co-filers$10.8M Endicott Capital II, L.P.Jun 2023 · 15 co-filers UGE International Ltd.Apr 2023 · 26 co-filers$583K PRISA Pooled REIT, LLCFeb 2023 · 15 co-filers$125K UGE International Ltd.Feb 2023 · 26 co-filers$145K UGE International Ltd.Feb 2023 · 26 co-filers$161K

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