David M Rein

David M Rein covers 64 companies with a founder-verified check from David M Rein, concentrated in SaaS, Fintech, AI Infrastructure. Round sizes are not disclosed for these companies, so this report lists the verified positions rather than dollar totals.

• Verified portfolio companies: 64
• Sector mix: SaaS 13 · Fintech 7 · AI Infrastructure 5 · Cybersecurity 5
• Headquarters mix: San Francisco 9 · New York 4 · Boston 3 · London 3

David M Rein — verified positions

• HATCH
• Shader
• Kin
• Moximed
• Wildcat Discovery Technologies
• Vera
• FlowFi
• OPTO Investments
• Openly
• Acelab
• Superscript
• Plastic Labs
• Vapotherm
• Cohora
• howie
• FINDMINE
• Thakaa Med
• Ruli
• Bolt
• Rocket Money
• Health Gorilla
• Shone
• Xapo
• Relievant Medsystems
• Retrocausal
• Villa Homes
• Alloy Enterprises
• The Marco Company
• Dock Health
• The GIST
• Rockets of Awesome
• Reelgood
• PatientIQ
• PayNearMe
• MaintainX
• Kentik
• White Owl Capital Partners
• Twin Labs
• Advanced Symbolics Inc
• Circuit Mind

David M. Rein — related firms and companies (56)

• Natalia Avdeeva
• Alexander Barhatkov
• Arie Benguigui
• Private Credit Fund I GP, LP Dynamic
• Wellington Funds (US) LLC
• 440 Hz Ventures, LLC
• TRCM Fund GP LLC
• Thomas J.A. Lavin
• Belltower Fund Group, Ltd.
• General Partner Forum Ventures Studio GP I, LLC
• Elodie Dupuy
• Sandalwood Securities Inc.
• Andrew L. Walker
• Charley Ma
• Annual Series GP ULC Overbay 2026 Fund
• Steven Siegel
• WHI Collective Real Estate LP
• Steven Brod
• Investors like David M. Rein
• William Cody Harvey
• Michael Cardamone
• Elizabeth Willmore
• Matt Kozlov
• Neman Ventures LLC
• Zhiyu He
• Michael Collins
• John Kelly
• Key Investment Management, LLC
• Andrew Boyd
• Nimble Partners, LLC
• Justin Smithline
• Forum Ventures Seed Fund GP II, LLC
• Governors Lane Fund General Partner LLC
• Brent Hoberman
• Keith Amchin
• Redwoods Capital Partners, LLC
• Jordan Stein
• Boyu Capital Investment Management Co., Limited
• Edward I. Dresner
• Golan Lewkowicz
• Nimble Partners GP, LLC
• NB Equity Management GP LLC
• James Murphy
• Joel Wolhendler
• Joshua Z Chen
• Alan Kaplan
• William A. Rudnick
• VC Management II, LLC
• Boyu Capital Management (Singapore) Pte. Ltd.
• Dennis P. Cameron
• Cameron H. Burns
• Nimble Partners OPP GP II, LLC
• Readout Capital Fund GP, LLC
• Whitney Sales-Kincannon
• Hemant Taneja
• firstminute capital IV General Partner LLP

David M. Rein profile · All research reports