Investor · NEW YORK, NY

Mark D. O'Sullivan

Open Mark in the network graph →

Filings

22

SEC Form D

Connections

86

co-filers

Capital

$6.2B

across filings

Active

Aug 2012

to Aug 2024

Most-connected co-filers (86)

Sean D. Ward · New York, NY15 shared Michael Rees · New York, NY15 shared Blake D. Rice · New York, NY14 shared Kindal Kreamer · Dallas, TX14 shared Christian N. Neira · New York, NY13 shared Bradley Koch · Ann Arbor, MI13 shared Ronald M. Dickerman · New York, NY13 shared Phyllis G. Thomas · Los Angeles, CA13 shared Andrew Sparacia · Cleveland, OH13 shared Tingting Zhang · El Segundo, CA13 shared Scott E. Grace · Chicago, IL13 shared Jesse Vollmar · Ann Arbor, MI12 shared Anthony R. Tutrone · New York, NY12 shared Steven H. Goldman · Milton, Ontario, Canada12 shared John M. Gregory · Milton, Ontario, Canada12 shared Molly North · Cincinnati, OH12 shared Kelly Maughan · NEW YORK, NY11 shared Yonah Feder · NEW YORK, NY11 shared Kevin Czerwonka · Cleveland, OH7 shared Antonin Robert · Cleveland, OH7 shared Margo E. Cook · Chicago, IL7 shared Kimberly Marlar · Dallas, TX6 shared Angela Gorder · Minnetonka, MN6 shared Andrew C. Laurino · New York, NY6 shared

Recent filings (22)

Ambrosia Biosciences Inc.Aug 2024 · 14 co-filers$25.0M Ambrosia Biosciences Inc.Aug 2024 · 14 co-filers$25.0M Dyal Earl U.S. LLCNov 2016 · 30 co-filers Dyal Capital Partners III Co-Invest Earl (AK) LPNov 2016 · 30 co-filers Dyal Earl Co-Investment Partners LPNov 2016 · 30 co-filers Dyal III Third Avenue Co-Investment Fund LLCAug 2016 · 11 co-filers Dyal Capital Partners III (A) LPMay 2016 · 27 co-filers Dyal III Offshore Investors LPMay 2016 · 27 co-filers Dyal II Offshore Investors LPJul 2015 · 27 co-filers Dyal II US Investors LPJul 2015 · 27 co-filers Dyal II Offshore Investors LPJul 2015 · 27 co-filers Dyal II Pension Investors LPJul 2015 · 27 co-filers Dyal II US Investors LPJul 2015 · 27 co-filers Dyal III Pension Investors LPJul 2015 · 25 co-filers Dyal Capital Partners III (A) LPMay 2015 · 25 co-filers Oak Forest IL Self Storage, LPApr 2015 · 11 co-filers$1.3M Rochester Self Storage OpCo LLCFeb 2015 · 10 co-filers$1.6M CommercialTribe Inc.Feb 2015 · 14 co-filers$4.0M CommercialTribe Inc.May 2014 · 7 co-filers$3.2M BIOPTIX DIAGNOSTICS, INC.Mar 2013 · 14 co-filers$8.0M BaroFold, Inc.Feb 2013 · 6 co-filers$1.7M ProFoldRX, Inc.Aug 2012 · 7 co-filers$1.7M

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