Investor · Canton, MA
Michael Heffernan
Open Michael in the network graph →Filings
26
SEC Form D
Connections
133
co-filers
Capital
$871.5M
across filings
Active
Nov 2010
to Nov 2025
Most-connected co-filers (133)
Patrick Fortune · Cumberland, RI10 sharedSteven N. Tannenbaum · LEXINGTON, MA8 sharedPatrick J. Heron · Dublin, Ireland8 sharedJeffrey Nugent · Cumberland, RI7 sharedImmanuel Thangaraj · BELLEVUE, WA7 sharedWilliam Crouse · Trevose, PA6 sharedRobert R. Anders, Jr · Raleigh, NC6 sharedMichael K. Painter · RALEIGH, NC6 sharedDavid J. Mccue · Vancouver, British Columbia, Canada6 sharedWilliam W. Anders · Raleigh, NC6 sharedHoward K. Landis Iii · RALEIGH, NC6 sharedMichael Becker · Dallas, TX6 sharedMichael Vukelich · Fallbrook, CA6 sharedJerry B. Halamuda · San Diego, CA6 sharedRobert S. Gefaell, Jr · CHARLOTTE, NC6 sharedStephen Mcphail · Greenville, NC5 sharedStephen Parthum · Boston, MA4 sharedChris Nichols · Boston, MA4 sharedRonald Cacciola · Camana Bay, Cayman Islands4 sharedClaire Umanzio · Boston, MA4 sharedPaul Sevieri · Boston, MA4 sharedAlexander C. Bean · RALEIGH, NC4 sharedMary B. Bloom · Boston, MA4 sharedRob Day · Boston, MA4 shared
Recent filings (26)
Par Health, Inc.Nov 2025 · 27 co-filers$763.0MPar Health, Inc.Nov 2025 · 27 co-filers$763.0MCARISMA Therapeutics Inc.Jan 2021 · 17 co-filers$70.4MCARISMA Therapeutics Inc.Jan 2021 · 17 co-filers$70.4MCOLLEGIUM PHARMACEUTICAL, INCNov 2018 · 25 co-filers$20.0MCOLLEGIUM PHARMACEUTICAL, INCNov 2018 · 25 co-filers$20.0MeMind Science CorpSep 2016 · 7 co-filers$3.0MeMind Science CorpSep 2016 · 7 co-filers$3.0MCOLLEGIUM PHARMACEUTICAL, INCMar 2015 · 18 co-filers$50.0MGenome ID Group, LLCMay 2014 · 5 co-filers$1.2MGenome ID Group, LLCMay 2014 · 5 co-filers$1.2MTELLIGENT SYSTEMS INCJul 2013 · 17 co-filers$8.0MTELLIGENT SYSTEMS INCJul 2013 · 17 co-filers$5.0MPlexus Fund III, L.P.May 2013 · 13 co-filers$150.0MPlexus Fund QP III, L.P.May 2013 · 13 co-filers$150.0MGenome ID Group, LLCApr 2013 · 4 co-filers$3.0MGenome ID Group, LLCApr 2013 · 4 co-filers$3.0MPlexus Fund III, L.P.Mar 2013 · 13 co-filers$150.0MPlexus Fund QP III, L.P.Mar 2013 · 13 co-filers$150.0MPrecision Dermatology, Inc.Nov 2012 · 13 co-filers$58.1MCORNERSTONE THERAPEUTICS INCJul 2012 · 16 co-filers$30.0MCORNERSTONE THERAPEUTICS INCJul 2012 · 16 co-filers$30.0MPrecision Dermatology, Inc.May 2012 · 12 co-filers$40.0MCOLLEGIUM PHARMACEUTICAL INCFeb 2012 · 8 co-filers$22.5MBMEF Stoneleigh REIT, Inc.Jan 2012 · 21 co-filers$125K
Derived from public SEC Form D (Reg D) filings; entities resolved probabilistically. See Michael in the interactive graph →