Patrick O’Shaughnessy
InvestorPartner at Positive Sum Capital
Stamford, Connecticut
Writes $100K – $1M checks · typically $100K
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Contact· self-published, not guessed
Investments
Investor
BottomlessCubbyEight SleepEntrepreneurs FirstHumanCoPassthroughPrefectSpeakeasyStemoniXTegus Acquires Canalyst
Per curated public sources.
Colleagues at Positive Sum Capital
Network1
Investors connected to Patrick in public investor directories — a warm-intro map.
Frequently asked questions
- Who is Patrick O’Shaughnessy?
- Investor at Positive Sum Capital
- Where does Patrick O’Shaughnessy work?
- Patrick O’Shaughnessy is Partner at Positive Sum Capital.
- What check size does Patrick O’Shaughnessy write?
- Patrick O’Shaughnessy typically writes checks of $100K – $1M.
- What companies has Patrick O’Shaughnessy invested in?
- Investments tracked here include Bottomless, Cubby, Eight Sleep, Entrepreneurs First, HumanCo, Passthrough, Prefect, Speakeasy, StemoniX, Tegus Acquires Canalyst.
Founder mafias
University of St. Thomas mafia36
Also came through, then founded or led a company.
About this profile. Compiled from public sources — Positive Sum Capital's own website and public professional profiles — and summarised by Fundraising Fox; every fact is kept with where it came from. Spotted an error, or would rather not be listed? Email privacy@fundraisingfox.com · How we build profiles · Your rights











