Investor · Greenwich, CT

Michael B. Lazar

Open Michael in the network graph →

Filings

33

SEC Form D

Connections

48

co-filers

Capital

$2.9B

across filings

Active

Jun 2019

to Sep 2025

Most-connected co-filers (48)

Piney Lake Capital Management LP · Greenwich, CT26 shared Piney Lake Capital GP LLC · Greenwich, CT26 shared Brantley P. Turner · Tempe, AZ24 shared Boris Revsin · Menlo Park, CA24 shared Linda J. Kozick · South San Francisco, CA3 shared William J. Rieflin · South San Francisco, CA3 shared Brian Wong · South San Francisco, CA3 shared Franklin J. Collins Iv · Westport, CT3 shared Joshua Malouf · Goleta, CA3 shared Emily Hanson · Goleta, CA3 shared Christopher Savoie · Cambridge, MA3 shared Guilherme Peres · Goleta, CA3 shared William F. Ho · South San Francisco, CA3 shared Dirk F. Brockstedt · South San Francisco, CA3 shared Clark Golestani · Cambridge, MA3 shared Mark Cupta · Cambridge, MA3 shared Michael D'Angelo · Tucson, AZ3 shared Terry Esser · Tucson, AZ3 shared Jennifer Henderson · Fort Collins, CO3 shared Nasrin Thierer · Chicago, IL3 shared Michael F. Giordano · South San Francisco, CA3 shared Remiges Biopharma Fund Gp Ii, Inc · Cambridge, MA2 shared Jian Chen · Milpitas, CA2 shared Gary C. Linford · Grand Cayman, Cayman Islands2 shared

Recent filings (33)

Piney Lake Opportunities Fund LPSep 2025 · 6 co-filers Piney Lake Opportunities Offshore Fund LPSep 2025 · 6 co-filers Piney Lake Opportunities ECI Master Fund LPSep 2025 · 6 co-filers Piney Lake Opportunities Non-ECI Master Fund LPSep 2025 · 6 co-filers RAPT Therapeutics, Inc.Jan 2025 · 29 co-filers$150.0M Piney Lake Opportunities ECI Master Fund LPSep 2024 · 6 co-filers Piney Lake Opportunities Offshore Fund LPSep 2024 · 6 co-filers Piney Lake Opportunities Non-ECI Master Fund LPSep 2024 · 6 co-filers Piney Lake Opportunities Fund LPSep 2024 · 6 co-filers Piney Lake Opportunities ECI Master Fund LPSep 2023 · 6 co-filers Piney Lake Opportunities Non-ECI Master Fund LPSep 2023 · 6 co-filers Piney Lake Opportunities Fund LPSep 2023 · 6 co-filers Piney Lake Opportunities Offshore Fund LPSep 2023 · 6 co-filers Piney Lake Opportunities Non-ECI Master Fund LPSep 2022 · 6 co-filers Piney Lake Opportunities ECI Master Fund LPSep 2022 · 6 co-filers Piney Lake Opportunities Fund LPSep 2022 · 6 co-filers Piney Lake Opportunities Offshore Fund LPSep 2022 · 6 co-filers RAPT Therapeutics, Inc.Jun 2022 · 29 co-filers$50.0M Piney Lake Opportunities Fund LPSep 2021 · 6 co-filers Piney Lake Opportunities Non-ECI Master Fund LPSep 2021 · 6 co-filers Piney Lake Opportunities Offshore Fund LPSep 2021 · 6 co-filers Piney Lake Opportunities ECI Master Fund LPSep 2021 · 6 co-filers Piney Lake Opportunities ECI Master Fund LPSep 2020 · 6 co-filers Piney Lake Opportunities Offshore Fund LPSep 2020 · 6 co-filers Piney Lake Opportunities Fund LPSep 2020 · 6 co-filers

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