Investor · NEW YORK, NY

Jonathon Blackwell

Open Jonathon in the network graph →

Filings

35

SEC Form D

Connections

197

co-filers

Capital

$270.9M

across filings

Active

Jun 2022

to Dec 2023

Most-connected co-filers (197)

Chris E. Elkins · Fayetteville, AR13 shared Hannah M. Ketchen · Pelham, NH11 shared John H. Souter · Chicago, IL7 shared Walter M. Clark · Chicago, IL7 shared Jen J. Weiss · New York, NY7 shared Jeff H. Rosenberg · Chicago, IL7 shared Damian Juric · Grand Cayman, Cayman Islands7 shared Russell S. Burt · Grand Cayman, Cayman Islands7 shared Robert Shattuck · Holladay, UT6 shared Matthew Joen · Denver, NC6 shared Robert Mancini · West Des Moines, IA6 shared Jason Gray · New Haven, CT6 shared Joe Kuhns · NEW YORK, NY4 shared Blake Carpenter · FORT WORTH, TX4 shared Revel Wood · Howald, Luxembourg, Luxembourg4 shared Stephen Kalinsky · NASHVILLE, TN4 shared Larry Marsh · NEW YORK, NY4 shared Shili Zhan · Annandale, VA4 shared Evan H. Dreyfuss · Chicago, IL4 shared Arthur D. Hyde, Iv · Dallas, TX4 shared Sue Frost · New York, NY4 shared Randy Adams · New York, NY4 shared Edward J. Mallon · New York, NY4 shared Matthew M. Herman · Chicago, IL4 shared

Recent filings (35)

Arpeggio Biosciences, Inc.Nov 2025 · 16 co-filers$35.3M Arkhouse Value Fund VIII LPOct 2025 · 6 co-filers Arkhouse Value Fund VIII LPOct 2025 · 6 co-filers Arkhouse Value Fund VIII LPOct 2025 · 6 co-filers Arkhouse Value Fund VIII LPOct 2025 · 6 co-filers SOFTWEAR AUTOMATION, INC.Aug 2025 · 23 co-filers$20.0M SOFTWEAR AUTOMATION, INC.Aug 2025 · 23 co-filers$20.0M Arpeggio Biosciences, Inc.Mar 2025 · 10 co-filers$4.6M Rail-Splitter Micro Cap Rebound Fund, LP.Mar 2025 · 11 co-filers Arkhouse Value Fund V LPMar 2025 · 6 co-filers Arkhouse Value Fund IV LPMar 2025 · 6 co-filers Arkhouse Value Fund V LPMar 2025 · 6 co-filers Arkhouse Value Fund IV LPMar 2025 · 6 co-filers Iron Road Multi-Strategy Fund L.P.Jul 2024 · 28 co-filers Iron Road Diversified Fund, LPJun 2024 · 28 co-filers EQT Infrastructure VI Access Offshore SCSpMay 2024 · 8 co-filers Petershill PES II Offshore SCSpMay 2024 · 8 co-filers Segra Resource Offshore Partners, Ltd.Apr 2024 · 10 co-filers Segra Resource Onshore Partners, LPApr 2024 · 13 co-filers Rail-Splitter Micro Cap Rebound Fund, LP.Mar 2024 · 11 co-filers VESEY STREET CAPITAL PARTNERS HEALTHCARE FUND II, L.P.Mar 2024 · 14 co-filers$375.0M VESEY STREET CAPITAL PARTNERS HEALTHCARE FUND II-A, L.P.Mar 2024 · 14 co-filers$375.0M EQT Infrastructure VI Access Offshore SCSpDec 2023 · 8 co-filers Arkhouse Value Fund II LPDec 2023 · 6 co-filers Arkhouse Value Fund I LPDec 2023 · 6 co-filers

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