Investor · Syosset, NY

Robert N. Koltun

Open Robert in the network graph →

Filings

17

SEC Form D

Connections

57

co-filers

Capital

$925K

across filings

Active

Oct 2025

to Oct 2025

Most-connected co-filers (57)

Attila Bodnar · BUDAPEST, K510 shared Burkhard Feurstein · Budapest, K510 shared Berzi Akos · Budapest, K59 shared Tommy Saunders · Kearney, MO7 shared Norman J. Szydlowski · Tulsa, OK7 shared Philip Sexauer · Lake Forest, IL7 shared Kay Haigh · London, United Kingdom7 shared Richard Ralph · Cowbridge/South Glamorgan, United Kingdom7 shared Bradley K. Atkinson · Pottsboro, TX7 shared Todd Coady · Roberts, IL7 shared Sharra Straight · Tulsa, OK7 shared Shawn W. Coady · Tulsa, OK7 shared Bryan K. Guderian · Tulsa, OK7 shared Vincent J. Osterman · Tulsa, OK7 shared Kevin C. Clement · Oklahoma City, OK7 shared James L. Burke · Houston, TX7 shared Frank E. Williams, Jr · Roosevelt Island, NY7 shared James C. Kneale · Tulsa, OK7 shared Gregory S. Stewart · Pinehurst, ID7 shared David J. Sharpless · Toronto, Ontario, Canada7 shared Stephen L. Cropper · Tulsa, OK7 shared H. M. Krimbill · Tulsa, OK7 shared James G. Webb · George Town, Grand Cayman, Cayman Islands7 shared William Mckay · Fallbrook, CA7 shared

Recent filings (17)

ReLoomVR, Inc.Oct 2025 · 5 co-filers ReLoomVR, Inc.Oct 2025 · 5 co-filers NGL Energy Partners LPSep 2013 · 33 co-filers$6.5M Organica Water, Inc.Sep 2013 · 12 co-filers$12.6M NGL Energy Partners LPAug 2013 · 33 co-filers$72.0M NGL Energy Partners LPJul 2013 · 33 co-filers$5.0M NGL Energy Partners LPJan 2013 · 35 co-filers$8.0M Organica Water, Inc.Jan 2013 · 8 co-filers$7.6M Organica Water, Inc.Dec 2012 · 9 co-filers$5.1M NGL Energy Partners LPNov 2012 · 35 co-filers$45.0M NGL Energy Partners LPOct 2012 · 35 co-filers$13.2M NGL Energy Partners LPJul 2012 · 33 co-filers$445.1M GREY K OFFSHORE FUND, LTD.Mar 2011 · 2 co-filers Grey K Fund, LPMar 2011 · 1 co-filer GREY K OFFSHORE FUND, LTD.Mar 2010 · 2 co-filers Grey K Fund, LPMar 2010 · 1 co-filer RNK (AMBER) SYN I, LLCJan 2010 · 1 co-filer$33.2M GOOD WATER Co INCSep 2009 · 5 co-filers$750K

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