Investor · New York, NY
Mark Grinbaum
Open Mark in the network graph →Filings
54
SEC Form D
Connections
153
co-filers
Capital
$14.4M
across filings
Active
Aug 2016
to Feb 2025
Most-connected co-filers (153)
Carolina Abenante · New York, NY48 sharedThomas O'Neill · New York, NY41 sharedRobert Ainbinder · New York, NY40 sharedWilliam Wise · New York, NY23 sharedSergey Tsoy · New York, NY23 sharedRichard Bush · New York, NY20 sharedRobert W. Jernigan · Los Angeles, CA15 sharedNick Sershen · Sioux Falls, SD15 sharedAsif M. Dakri · Houston, TX15 sharedArthur P. Pasquarella · Newtown Square, PA15 sharedCindy P. Simpson · Dallas, TX15 sharedRobert Adam · Houston, TX15 sharedRobin W. Klehr Avia · New York, NY15 sharedAlwyne Management GP LLC · Chappaqua, NY15 sharedGerry Grimes · Dublin 4, Ireland15 sharedJulia W. Simet · New York, NY14 sharedDaniel M. Dilella · Newtown Square, PA14 sharedJill Smart · New York, NY14 sharedBrad Parkinson · San Luis Obispo, CA14 sharedRaymond W. Shick · Shanghai, Israel13 sharedChristopher Hogan · New York, NY13 sharedAlan M. Andreini · Minneapolis, MN13 sharedPartnership Equus Gpxi Limited · Newtown Square, PA13 sharedRobert M. Zorich · HOUSTON, TX13 shared
Recent filings (54)
AUDDIA INC.Jul 2025 · 17 co-filers$750KNYIAX, INC.Feb 2025 · 12 co-filersNYIAX, INC.Feb 2025 · 12 co-filersNYIAX, INC.Feb 2025 · 12 co-filersNYIAX, INC.Feb 2025 · 17 co-filersNYIAX, INC.Aug 2024 · 17 co-filersNYIAX, INC.Aug 2024 · 17 co-filersAUDDIA INC.May 2024 · 17 co-filers$2.3MNYIAX, INC.Apr 2024 · 23 co-filersNYIAX, INC.Apr 2024 · 23 co-filersNYIAX, INC.Apr 2024 · 23 co-filersNYIAX, INC.Apr 2024 · 23 co-filersNYIAX, INC.Apr 2023 · 20 co-filers$2.0MNYIAX, INC.Feb 2023 · 23 co-filers$500KMISSION READY SOLUTIONS INCJan 2023 · 19 co-filers$193KWickersham Milford, LPJan 2023 · 5 co-filers$21.0MBelveron Fund VI REIT Property Owner, LLCDec 2022 · 17 co-filers$125KMISSION READY SOLUTIONS INCDec 2022 · 19 co-filers$1.5MAmherst Street Holdings REIT, LLCDec 2022 · 17 co-filers$125KBelveron Partners Fund VI TX REIT, LLCDec 2022 · 17 co-filers$125KEvergreen Holdings REIT, LLCDec 2022 · 17 co-filers$125KNYIAX, INC.Sep 2022 · 23 co-filers$6.0MNYIAX, INC.Sep 2022 · 23 co-filers$6.0MNYIAX, INC.Aug 2022 · 23 co-filers$6.0MNYIAX, INC.Aug 2022 · 23 co-filers$6.0M
Derived from public SEC Form D (Reg D) filings; entities resolved probabilistically. See Mark in the interactive graph →