Jack Groetzinger is an angel investor and operator angel based in New York, United States. The known portfolio counts 4 companies: Truework, Cardless, Troops and RankScience.
Is Jack Groetzinger a fit for your startup?
Paste your website. AI checks the fit and scores every other investor too.
Investment focus
Contacts
Jack Groetzinger portfolio companies (4)
- Truework
- Cardless
- Troops
- RankScience
Affiliated funds' portfolios
Founder Partner at Founder Collective, whose known portfolio counts 10 companies
- Shellworks
- Iris Finance
- tofu
- Pagaleve
- Windmill
- Pantherun Technologies
- Radial
- Ezeebit
- Rebar
- Appy.AI
Investor Profile
The known portfolio sits in sectors Commerce, Consumer, FinTech and SaaS, and focus areas Banking, Consumer Health, Credit and E-Commerce.
Jack Groetzinger appears in Pre-Seed, Seed and Series A rounds across the known deals.
The portfolio and focus above give founders context on whether Jack Groetzinger matches their raise.
Colleagues at Founder Collective
Raj De Datta
Founder Partner
San Francisco, United States
Micah Rosenbloom
Managing Partner
New York, United States
Nadia Boujarwah
Founder Partner
New York, United States
Amanda Herson
General Partner
New York, United States
David Frankel
Managing Partner
Cambridge, United States
Similar investors
Showing 20 of 100
Ankur Nagpal
Investor Person
New York, United States
Jared Hecht
Venture Partner
Brooklyn, United States
Ameet Ranadive
angel investor and operator angel
San Diego, United States
Adam Jackson
Investor
Boston, United States
Greg Cangialosi
Managing Member
Baltimore, United States
Troy Henikoff
Managing Director
Chicago, United States
Jason Stankiewicz
angel investor
Nick Grandy
angel investor and operator angel
San Francisco, United States
Jim McKelvey
Co-Founder and Director
New York, United States
Peter Johnson
angel investor
New York, United States
Ryan Gilbert
Founder
San Francisco, United States
Justin Yoshimura
Founder
Austin, United States
Jay Hoffmann
angel investor and operator angel
Chicago, United States
Zach Klein
angel investor and operator angel
San Francisco, United States
Chris Schagen
angel investor and operator angel
Berlin, Germany
Andrew Blachman
Partner
San Francisco, United States
Steve Schlafman
angel investor and operator angel
Stone Ridge, United States
Dafeng Guo
operator angel
Hong Kong
Mike Ghaffary
General Partner
San Francisco, United States
James McKinnon
angel investor and operator angel
Sydney, Australia
Frequently asked questions
Who is Jack Groetzinger?
Jack Groetzinger is an angel investor and operator angel based in New York, United States with 4 known investments on file, among them Truework, Cardless and Troops. The sections above list the sectors, stages and firms attached to that record.
What does Jack Groetzinger invest in?
Listed sectors include Commerce, Consumer, FinTech and SaaS; listed focus areas include Banking, Consumer Health, Credit and E-Commerce. Those tags come from the companies attached to this profile, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does Jack Groetzinger invest at?
The known deals of Jack Groetzinger include Pre-Seed, Seed and Series A rounds. Stage is the strongest single filter when you build a target list: an investor with no record at your stage rarely starts with you.
Which firm is Jack Groetzinger listed at?
Jack Groetzinger is listed as Founder Partner at Founder Collective. 5 other people in the database share a firm with Jack Groetzinger.
How do I contact Jack Groetzinger?
An email address, a phone number and a LinkedIn page are on file for Jack Groetzinger. The address stays masked on this page and is readable inside RaiseHunt after you create an account.
Skip the browsing. Let AI find your ideal investors in one minute.
Paste your startup website and AI picks your best-fit investors out of 135,000+ profiles.
Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal