Ledger.
Investor · Somerville, MA

Jan Poschko

Open Jan in the network graph →
Filings
11
SEC Form D
Connections
47
co-filers
Capital
$18.0M
across filings
Active
Dec 2020
to Oct 2025

Most-connected co-filers (47)

Habib Haddad · Wellesley, MA5 sharedPhilip R. Taylor · Boulder, CO4 sharedBrandon Welch · Boulder, CO4 sharedDavid E. Kim · New York, NY4 sharedRonald Bracken · COLUMBUS, OH4 sharedGeorge J. Mcnellage · Boca Raton, FL4 sharedIBD Management LLC · Boca Raton, FL4 sharedMatthew Bacchiochi · Tampa, FL4 sharedMark R. Lewis · Boulder, CO4 sharedRodolfo Bellesi · Columbus, OH3 sharedRyan R. Martens · Boulder, CO3 sharedMark R. Retzloff · Boulder, CO3 sharedMaggie R. Fox · Boulder, CO3 sharedAlan Thielemann · Dunwoody, GA3 sharedLatif Peracha · Boston, MA3 sharedDaniel Sullivan · New York, NY3 sharedSean Grififn · Washington, Washington, D.C.3 sharedLawrence J. Sands · Boca Raton, FL3 sharedDavid B. Norcom · Bryan, TX3 sharedJacob J. Loven · Zurich, V83 sharedRichard Serino · Alexandria, VA3 sharedRyan Shear · Miami, FL3 sharedErez Kaminski · Somerville, MA3 sharedCharles A. Thomas · George Town, Cayman Islands3 shared

Recent filings (11)

Activ Technologies, Inc.Oct 2025 · 11 co-filers$1.0MKetryx CorpSep 2025 · 5 co-filers$37.5MKetryx CorpSep 2025 · 5 co-filers$37.5MKetryx CorpDec 2023 · 7 co-filers$14.0MMad Capital Group PBCSep 2022 · 8 co-filers$4.0MKetryx CorpJul 2022 · 8 co-filers$2.1MActiv Technologies, Inc.Mar 2022 · 11 co-filers$2.2MKetryx CorpNov 2021 · 7 co-filers$2.2MMad Agriculture Perennial Fund 1, LLCJan 2021 · 19 co-filers$10.0MMad Agriculture Perennial Fund 1, LLCDec 2020 · 22 co-filers$10.0MActiv Technologies, Inc.Dec 2020 · 11 co-filers$500KMad Agriculture Perennial Fund 1, LLCDec 2020 · 20 co-filers$7.0M

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