Investor · Chicago, IL
Mark Heffron
Open Mark in the network graph →Filings
63
SEC Form D
Connections
359
co-filers
Capital
$43.2M
across filings
Active
Jan 2023
to Sep 2025
Most-connected co-filers (359)
Alex Samoylovich · Chicago, IL52 sharedWilliam Murphy · Chicago, IL45 sharedChris Sultemeier · SAN DIEGO, CA21 sharedChristopher C. Monroe · New York, NY19 sharedAlastair R. Mcintyre · Winnipeg, Manitoba, Canada19 sharedDavid Arndt · Plano, TX19 sharedChristopher Olsen · Columbus, OH19 sharedJoe Fairless · New York, NY19 sharedAlan S. Kava · New York, NY19 sharedWilliam Roberts · Grand Cayman, Cayman Islands19 sharedDaniel E. Alger · New York, NY19 sharedOksana E. Beard · New York, NY19 sharedWilliam Y. Eng · New York, NY19 sharedAlexander E. Cheek · New York, NY19 sharedDirk E. Degenaars · New York, NY19 sharedWilliam L. Butler, Jr · Cincinnati, OH19 sharedClayton E. Wilmer · New York, NY19 sharedLaurie E. Schmidt · New York, NY19 sharedAndrew E. White · New York, NY19 sharedChristopher E. Nelson · New York, NY19 sharedKirsten F. Imohiosen · New York, NY19 sharedScott Y. Kilpatrick · New York, NY19 sharedGetty Y. Chin · New York, NY19 sharedJohanna E. Volpi · New York, NY19 shared
Recent filings (63)
Hildene Opportunities Offshore Fund II, Ltd.Jan 2026 · 3 co-filersHildene Opportunities Offshore Fund, Ltd.Jan 2026 · 3 co-filersJune DST HoldingsDec 2025 · 9 co-filers$3.2MJune DST HoldingsDec 2025 · 9 co-filers$3.2MRFE Investment Partners X, L.P.Dec 2025 · 18 co-filers$250.0MCEDARst GP Opportunity Zone Fund 1, LPDec 2025 · 10 co-filers$100.0MCEDARst GP Opportunity Zone Fund 1, LPDec 2025 · 10 co-filers$100.0MNew Mountain Guardian V (Levered), L.P.Sep 2025 · 9 co-filersNew Mountain Guardian V Feeder Fund, L.P.Sep 2025 · 9 co-filersNew Mountain Guardian V (Unlevered), L.P.Sep 2025 · 9 co-filersJune Holding Company, LLCSep 2025 · 10 co-filers$3.6MJune Holding Company, LLCSep 2025 · 10 co-filers$3.6MCEDARst Opportunistic Fund I Investor, LLCJul 2025 · 11 co-filers$100.0MCEDARst Opportunistic Fund I Investor, LLCJul 2025 · 11 co-filers$100.0MWilmore Holdco, LLCJul 2025 · 10 co-filers$7.2MWilmore Holdco, LLCJul 2025 · 10 co-filers$7.2MCEDARst Opportunistic Fund I Investor, LLCJun 2025 · 11 co-filers$100.0MCEDARst Opportunistic Fund I Shareholder, LLCJun 2025 · 11 co-filers$100.0MCEDARst Opportunistic Fund I Investor, LLCJun 2025 · 11 co-filers$100.0MCEDARst Dev Fund Investor, LLCJun 2025 · 10 co-filers$50.0MCEDARst OZ GP Fund I, L.P.Jun 2025 · 10 co-filers$100.0MCEDARst Opportunistic Fund I Shareholder, LLCJun 2025 · 11 co-filers$100.0MCEDARst OZ GP Fund I, L.P.Jun 2025 · 10 co-filers$100.0MCEDARst Dev Fund Investor, LLCJun 2025 · 10 co-filers$50.0MCEDARst Dev Fund Shareholder, LLCMay 2025 · 10 co-filers$50.0M
Derived from public SEC Form D (Reg D) filings; entities resolved probabilistically. See Mark in the interactive graph →