Investor · New Haven, CT
Thomas P. Koestler
Open Thomas in the network graph →Filings
35
SEC Form D
Connections
142
co-filers
Capital
$270.7M
across filings
Active
Sep 2012
to Jan 2026
Most-connected co-filers (142)
Mark A. Angelo · Mountainside, NJ21 sharedDaniel J. Vass · Cochrane, Alberta, Canada21 sharedJohn H. Johnson · New Haven, CT20 sharedGarheng Kong · Menlo Park, CA19 sharedDavid Gonzalez · Mountainside, NJ17 sharedMatthew J. Beckman · Mountainside, NJ17 sharedBenjamin J. Rootman · Calgary, Alberta, Canada17 sharedKing L. Au · Hong Kong, Hong Kong17 sharedYorkville Advisors Global, LP · Mountainside, NJ15 sharedJohn Ricciardi · NEW YORK, NY6 sharedMark Chedekel · LARKSPUR, CA6 sharedDelta Beta Advisors LLC · Mountainside, NJ6 sharedRobert Munro · Mountainside, NJ6 sharedRaymond D. Johnson · Amarillo, TX6 sharedCristobal A. Cuart Guitart · London, United Kingdom6 sharedRobert Schultz · Seward, NE6 sharedTroy Rillo · Mountainside, NJ6 sharedAndrew Uden · Seward, NE6 sharedT. K. Cheeseman, Jr · Tucson, AZ6 sharedKevin Ferro · Redwood City, CA5 sharedSteven Jaharis · Redwood City, CA5 sharedGorka Fius · Cambridge, MA5 sharedHines Brannan · Atlanta, GA5 sharedRobert M. Flowers · New York, NY4 shared
Recent filings (35)
YA Global Investments II (U.S.), LPJan 2026 · 3 co-filersYA II PN, Ltd.Jun 2025 · 8 co-filersSC-Sigma Global Partners, LPApr 2025 · 14 co-filersYA Global Investments II (U.S.), LPFeb 2025 · 11 co-filersYA Global Investments II (U.S.), LPFeb 2024 · 8 co-filersYorkville Ventures, LLCMar 2023 · 17 co-filersSC-Sigma Global Partners, LPMar 2023 · 14 co-filersYA Global Investments II (U.S.), LPMar 2023 · 8 co-filersYorkville Ventures, LLCMay 2022 · 17 co-filersYV-Public, LLC, a series of Yorkville Ventures, LLCMay 2022 · 17 co-filers$100KYV-AIG, LLC, a series of Yorkville Ventures, LLCMay 2022 · 17 co-filers$2.5MYVP-Cogito, LLC, a series of Yorkville Ventures Partners, LLCApr 2022 · 17 co-filersSC-Sigma Global Partners, LPJan 2022 · 14 co-filersYA Global Investments II (U.S.), LPJan 2022 · 8 co-filersYVP Plastiq, LLC, a series of Yorkville Ventures Partners, LLCDec 2021 · 17 co-filersSC-Sigma Global Partners, LPApr 2021 · 14 co-filersD-Beta One Growth & Opportunity Fund Offshore, LPMar 2021 · 10 co-filersSC-Sigma Global Partners, LPApr 2020 · 10 co-filersD-Beta One Growth & Opportunity Fund Offshore, LPMar 2020 · 10 co-filersD-Beta One Growth & Opportunity Fund Offshore, LPMar 2019 · 10 co-filersD-Beta One Growth & Opportunity Fund Offshore, LPMar 2018 · 10 co-filersMELINTA THERAPEUTICS, INC. /NEW/Jan 2018 · 34 co-filers$137.8MMELINTA THERAPEUTICS, INC. /NEW/Nov 2017 · 36 co-filers$132.9MImmusanT, Inc.Nov 2017 · 11 co-filers$39.9MImmusanT, Inc.Nov 2017 · 11 co-filers$39.9M
Derived from public SEC Form D (Reg D) filings; entities resolved probabilistically. See Thomas in the interactive graph →