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Mattan Griffel

InvestorFounder

Founder at Ophelia · CEO at One Month

Brooklyn, New York, United States

FoundedOne Month · YCOphelia · YC

30 Under 30 2015 · Education

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About

Mattan Griffel studied philosophy and finance at New York University and co-founded Ophelia, a Y Combinator-backed opioid recovery platform. He is faculty at Columbia Business School and an Innovation Fellow at the Lang Center for Entrepreneurship.

Likely email· guessed from name + firm domain, not firm-published

Founder at OpheliaYC W20

Intro paths

YC

Mattan went through Y Combinator (Winter 2020) — any YC alum in your network can reach them through the YC community.

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In turn, Mattan can intro founders to Ophelia's investors below.

Ophelia's investors · 13

640 OxfordDetroit · $250K – $400K checksFour Acres CapitalNew York · $50K – $100K checksGeneral CatalystSan Francisco · $30M checks · since 2021Good FriendsSan Francisco · $250K – $1M checks · since 2021Interplay Ventures Early Stage Management LlcNew York · $1M checks · since 2021Knollwood Investment AdvisoryHunt ValleyMenlo VenturesSan Francisco · $1M – $20M checks · since 2021Next VenturesAustin · $500K – $3M checksOperator LPNew York · $200K – $500K checksPeterson Venture PartnersSalt Lake City · $5M – $25M checksRefactor CapitalBurlingame · $1M – $2M checks · since 2021Tiger Global ManagementNew York · $1M – $100M checks · since 2021Y CombinatorSan Francisco · $500K checks · since 2020

Co-founders at Ophelia

ZGZack Gray
Zack GrayFounder

CEO at One MonthYC S13

Intro paths

YC

Mattan went through Y Combinator (Summer 2013) — any YC alum in your network can reach them through the YC community.

→

In turn, Mattan can intro founders to One Month's investors below.

One Month's investors · 12

Andreessen HorowitzMenlo Park · $500K – $50M checksAvlok CapitalLynnwoodFundersClubSan Francisco · $290K checksGeneral CatalystSan Francisco · $30M checksMaverick VenturesSan Francisco · $3M – $10M checksSinovation VenturesBeijingStanford UniversityStanford · since 2015Start CapitalWallace Investment GroupBostonWefunderSan FranciscoWinklevoss CapitalNew York · $100K – $5M checksY CombinatorSan Francisco · $500K checks · since 2013

Co-founders at One Month

CCChris Castiglione
Chris CastiglioneFounder

Investments

Per curated public sources.

Frequently asked questions

Who is Mattan Griffel?
Mattan Griffel studied philosophy and finance at New York University and co-founded Ophelia, a Y Combinator-backed opioid recovery platform. He is faculty at Columbia Business School and an Innovation Fellow at the Lang Center for Entrepreneurship.
Where does Mattan Griffel work?
Mattan Griffel is CEO of One Month and Founder at Ophelia.
What companies did Mattan Griffel found?
Mattan Griffel founded One Month, Ophelia.
What companies has Mattan Griffel invested in?
Investments tracked here include Clarion, Rapidfolio, Regbase, Wyndly.

Founder mafias

About this profile. Compiled from public sources — Ophelia'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