Investor · New York, NY

Mark J. Horowitz

Open Mark in the network graph →

Filings

103

SEC Form D

Connections

50

co-filers

Capital

$230.4B

across filings

Active

Oct 2013

to Mar 2025

Most-connected co-filers (50)

Glenview Capital Management, Llc · New York, NY101 shared Lawrence M. Robbins · New York, NY101 shared Glenview Capital Management, Llc · New York, NY94 shared Karen C. Roydon · St. Peter Port, Y794 shared Karen Yerburgh · St. Peter Port, Y789 shared Michael J. Burke · New York, NY89 shared Paul Ballantyne · St. Peter Port, Y784 shared John J. Rodin · New York, NY79 shared Bruce A. Karsh · Los Angeles, CA72 shared Thomas A. Nieman · Austin, TX72 shared Ralph J. Parker, Jr · Richmond, VA56 shared Jonathan J. Danziger · New York, NY56 shared Howard S. Marks · BURBANK, CA56 shared John Hallam · Castel, Y754 shared Elizabeth J. Perkins · New York, NY54 shared Glenview Capital Gp, Llc · New York, NY50 shared Glenview Capital Gp, Llc · New York, NY47 shared Glenview Capital Gp, Llc · New York, NY47 shared Bob J. Burns · New York, NY47 shared William T. Rose, Iii · Mason, OH40 shared Isaac Smith · Little Rock, AR40 shared Glenview Opportunity Gp, Llc · New York, NY30 shared Jeffrey J. Patterson · New York, NY27 shared Andrew Elder · St. Peter Port, Y727 shared

Recent filings (103)

GCM Investment Partners, L.P.Jan 2026 · 6 co-filers Glenview Healthcare Offshore Partners, L.P.Jan 2026 · 6 co-filers Glenview Healthcare Partners, L.P.Jan 2026 · 6 co-filers GLENVIEW INSTITUTIONAL PARTNERS L PJan 2026 · 6 co-filers Glenview Offshore Opportunity Fund, Ltd.Jan 2026 · 8 co-filers GLENVIEW CAPITAL PARTNERS CAYMAN LTDJan 2026 · 8 co-filers GLENVIEW CAPITAL OPPORTUNITY FUND LPJan 2026 · 6 co-filers GLENVIEW CAPITAL OPPORTUNITY FUND LPMar 2025 · 18 co-filers GLENVIEW CAPITAL PARTNERS CAYMAN LTDMar 2025 · 24 co-filers Glenview Healthcare Partners, L.P.Mar 2025 · 18 co-filers GLENVIEW INSTITUTIONAL PARTNERS L PMar 2025 · 18 co-filers Glenview Offshore Opportunity Fund, Ltd.Mar 2025 · 25 co-filers Glenview Healthcare Offshore Partners, L.P.Mar 2025 · 18 co-filers GCM Investment Partners, L.P.Mar 2025 · 18 co-filers GCM Suggestivist I Partners, LPJun 2024 · 17 co-filers GCM Suggestivist I Offshore Partners, LPJun 2024 · 17 co-filers GLENVIEW CAPITAL PARTNERS CAYMAN LTDMar 2024 · 19 co-filers GLENVIEW CAPITAL OPPORTUNITY FUND LPMar 2024 · 16 co-filers Glenview Offshore Opportunity Fund, Ltd.Mar 2024 · 20 co-filers Glenview Healthcare Partners, L.P.Mar 2024 · 16 co-filers Glenview Healthcare Offshore Partners, L.P.Mar 2024 · 16 co-filers GLENVIEW INSTITUTIONAL PARTNERS L PMar 2024 · 16 co-filers GCM Investment Partners, L.P.Mar 2024 · 16 co-filers GLENVIEW CAPITAL PARTNERS CAYMAN LTDMar 2023 · 22 co-filers GCM Investment Partners, L.P.Mar 2023 · 19 co-filers

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