Ledger.
Investor · HINGHAM, MA

Martin B. Madden

Open Martin in the network graph →
Filings
34
SEC Form D
Connections
114
co-filers
Capital
$31K
across filings
Active
Mar 2018
to Jan 2022

Most-connected co-filers (114)

Harel Gadot · HINGHAM, MA25 sharedScott B. Burell · HINGHAM, MA23 sharedDavid B. Ben Naim · HINGHAM, MA20 sharedYoav B. Waizer · HINGHAM, MA20 sharedPratipatti B. Laxminarain · HINGHAM, MA20 sharedYoseph B. Bornstein · HINGHAM, MA19 sharedDavid Tswamuno · WALTHAM, MA14 sharedMireille Klitting · Paris, I014 sharedVanessa Reggiardo · WALTHAM, MA14 sharedLori Daugherty · St Petersburg, FL14 sharedAlfonzo Leon · Bethesda, MD14 sharedPatrick O. Ingle · GAINESVILLE, FL14 sharedDanica Holley · Bethesda, MD14 sharedRonald Marston · Bethesda, MD14 sharedMatthew Cypher · Bethesda, MD14 sharedJeffrey Busch · Bethesda, MD14 sharedJamie Barber · Bethesda, MD14 sharedRobert Kiernan · Bethesda, MD14 sharedHenry Cole · Bethesda, MD14 sharedZhang Huiqi · Bethesda, MD14 sharedRoscoe Moore Jr · Bethesda, MD14 sharedKishore J. Ponnavolu · Warwick, RI14 sharedNicolas Pettinato · New York, NY14 sharedMaureen A. Gemma · BOSTON, MA14 shared

Recent filings (34)

Microbot Medical Inc.Sep 2025 · 29 co-filers$25.2MMicrobot Medical Inc.Sep 2025 · 29 co-filers$25.2MIIF UK 1 HEDGED LPMar 2025 · 5 co-filersIIF UK 1 LPMar 2025 · 5 co-filersMicrobot Medical Inc.Feb 2025 · 29 co-filers$13.0MMicrobot Medical Inc.Feb 2025 · 29 co-filers$13.0MMicrobot Medical Inc.Jan 2025 · 29 co-filers$7.0MMicrobot Medical Inc.Jan 2025 · 29 co-filers$8.6MMicrobot Medical Inc.Jan 2025 · 29 co-filers$8.6MMicrobot Medical Inc.Jan 2025 · 29 co-filers$7.0MAiM Medical Robotics Inc.Jul 2024 · 11 co-filers$2.5MMicrobot Medical Inc.Jun 2024 · 20 co-filers$1.8MMicrobot Medical Inc.Jun 2024 · 20 co-filers$1.8MShiprock Feeder Fund LPMar 2024 · 10 co-filersShiprock Capital LtdMar 2024 · 8 co-filersAiM Medical Robotics Inc.Jul 2023 · 11 co-filers$1.5MAiM Medical Robotics Inc.Mar 2023 · 11 co-filers$1.3MShiprock Capital LtdMar 2023 · 8 co-filersShiprock Feeder Fund LPMar 2023 · 10 co-filersGlobal Medical REIT Inc.Jan 2022 · 41 co-filers$600KGlobal Medical REIT Inc.Oct 2021 · 41 co-filers$2.7MGlobal Medical REIT Inc.Oct 2021 · 41 co-filers$168KGlobal Medical REIT Inc.Oct 2021 · 41 co-filers$463KGlobal Medical REIT Inc.Oct 2021 · 41 co-filers$295KGlobal Medical REIT Inc.Apr 2020 · 47 co-filers$6.3M

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