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Ali Attar

InvestorFounder

CEO at Lightberry · CPO at SigmaOS

San Francisco, California, United States

FoundedLightberry · YCSigmaOS · YC

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About

Ali Attar is the founder of Lightberry, a company in the F25 batch.

CEO at LightberryYC F25

Intro paths

YC

Ali went through Y Combinator (Fall 2025) — any YC alum in your network can reach them through the YC community.

GP

Their group partner at YC was Garry Tan, President & CEO of Y Combinator — the partner who ran Lightberry's batch and knows the company first-hand. YC profile ↗

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In turn, Ali can intro founders to Lightberry's investors below.

Lightberry's investors · 21

Applied AngelsBlast.Club$5.5M checksBlitzscaling VenturesPalo AltoGaingelsNew York · $200K – $500K checksGhostNewport BeachGuil Mobility VenturesKima VenturesParis · $50K – $5M checksLiquid VenturesSan Francisco · $250K – $5M checksMadrona Venture GroupSeattle · $2M – $10M checksOurCrowdJerusalemPioneerToronto, OntarioPrana Tech VenturesMetuchenRitual CapitalMenlo Park · $100K – $500K checksSingularity VenturesSpot VCNewarkTranspose Platform ManagementSan FranciscoTwenty Two VenturesPalo Alto · $50K – $250K checksVentioneers CapitalOakvilleVest Capital PartnersWefunderSan FranciscoY CombinatorSan Francisco · $500K checks · since 2025

Co-founders at Lightberry

SK
Stephan KoenigstorferCTO
SWStephan Wolski
Stephan WolskiHead of Robotics

CPO at SigmaOSYC S21

Intro paths

YC

Ali went through Y Combinator (Summer 2021) — any YC alum in your network can reach them through the YC community.

GP

Their group partner at YC was Gustaf Alstromer, General Partner at Y Combinator — the partner who ran SigmaOS's batch and knows the company first-hand. YC profile ↗

→

In turn, Ali can intro founders to SigmaOS's investors below.

SigmaOS's investors · 9

7percent VenturesLondon · $250K – $2M checksLatitud VenturesSanta Rosa · $100K – $5M checks · since 2022LocalGlobeLondon · since 2022MF SuperfundSeattleMoonfire VenturesLondonPioneerToronto, OntarioTerra Venture PartnersJerusalem · $300K – $2M checksTrueSight VenturesEsherY CombinatorSan Francisco · $500K checks · since 2021

Co-founders at SigmaOS

MGMahyad Ghassemi
Mahyad GhassemiCEO
SMSaurav Mitra
Saurav MitraFounder
MGMahyad Ghassemibouyaghchi
Mahyad GhassemibouyaghchiFounder

Investments

Per curated public sources.

Frequently asked questions

Who is Ali Attar?
Ali Attar is the founder of Lightberry, a company in the F25 batch.
Where does Ali Attar work?
Ali Attar is CEO of Lightberry and CPO at SigmaOS.
What companies did Ali Attar found?
Ali Attar founded Lightberry, SigmaOS.
What companies has Ali Attar invested in?
Investments tracked here include Cranston AI, Icarus, Tornyol, Zephyr Fusion.

Founder mafias

SigmaOS mafia3

Also came through, then founded or led a company.

Mahyad GhassemiCEOFounded OkibiSaurav MitraFounderFounded Okibi

Lightberry mafia2

Also came through, then founded or led a company.

Stephan WolskiHead of RoboticsFounded Bucket Robotics

About this profile. Compiled from public sources — Lightberry'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