Fundraising Fox

Yoni Cheifetz

Investor

Partner at Lightspeed Venture Partners · Board director at Harmony IT

Israel

Writes $25K – $20M checks · typically $15M

About

Yoni Cheifetz, an Israeli-based partner since 2006, was granted a $10M open-check mandate to independently back Israeli tech, focusing on ambitious infrastructure plays (e.g., Cato Networks) and democratizing fintech platforms.

Contact· self-published, not guessed

Invests in

AI & Machine LearningConsumerEnterprise SoftwareFintechHealthtech

Board director at Harmony IT

Intro paths

→

In turn, Yoni can intro founders to Harmony IT's investors below.

Harmony IT's investors · 1

Lightspeed Venture PartnersMenlo Park · $1.7M – $87M checks · since 2025

Co-founders at Harmony IT

NS
Nitzan ShapiraExecutive Officer, Director
RR
Ran RibenzaftExecutive Officer, Director

Experience

  1. PonteraDirectorcurrent2021 — present
  2. Cato NetworksDirectorcurrent2018 — present
  3. Lightspeed Venture PartnersPartnercurrent2006 — presentIsrael
  4. Theranica Bio-Electronics Ltd.Directorcurrent2017 — present
  5. At-BayDirectorcurrent2017 — presentUnited States
  6. AloomaDirectorcurrent2015 — presentIsrael
  7. Personetics TechnologiesDirectorcurrent2013 — present
  8. BlueVineDirectorcurrent2013 — present
  9. Ginger SoftwareDirectorcurrent2008 — present
  10. ScodixDirectorcurrent2013 — present
  11. SolarEdgeDirectorcurrent2010 — present
  12. OutbrainDirectorcurrent2008 — present
  13. EpsagonDirector2018 — 2021
  14. EyeViewObserver2014 — 2017
  15. Teads.tvDirector2007 — 2017
  16. EarnixChairman2000 — 2010Israel
  17. Sheer NetworksDirector2004 — 2006
  18. AeroScoutDirector2003 — 2006
  19. DemantraCEO1996 — 2001

Skills & more

Entrepreneurship48Venture Capital82Angel Investing15Product Management14Business Strategy14Private Equity13Start-ups60

From Yoni's professional profile.

Deals · 1

Harmony ITBoard seat

via Lightspeed Venture Partners · filed Jul 2025 · $5M raise

Attribution from SEC filings, press coverage, and firm rosters.

Other disclosed investments

Board seats

Nominal

Per SEC Form D filings.

Colleagues at Lightspeed Venture Partners

Alexander Schmitt
Partner at Lightspeed Venture Partners
Amber Yang
Investor at Bloomberg Beta
Anand Iyer
Investor and founder in San Francisco
Anoushka Vaswani
Partner at Lightspeed Venture Partners
Antoine Moyroud
Partner at Lightspeed Venture Partners
Arif Janmohamed
Partner at Lightspeed Venture Partners
Banafsheh Fathieh
General Partner at Faction
Barry Eggers
Co-Founder, Lightspeed at Giant Ventures Global Llp

Network7

Andreas WeiskamScout
Partner and Co-Founder of Sapphire Ventures, focused on European investments
Andy VitusScout
Partner at Scale Venture Partners
Avi ZeeviScout
Co-Founder and General Partner at Viola Ventures
Bruce TaraginScout
Managing Director at Blumberg Capital
Daniel CohenScout
Senior Advisor at Viola Ventures
David J. BlumbergScout
Founder and Managing Partner of Blumberg Capital
Dominic EndicottScout
Director at Northstar Ventures

Investors connected to Yoni in public investor directories — a warm-intro map.

Frequently asked questions

Who is Yoni Cheifetz?
Yoni Cheifetz, an Israeli-based partner since 2006, was granted a $10M open-check mandate to independently back Israeli tech, focusing on ambitious infrastructure plays (e.g., Cato Networks) and democratizing fintech platforms.
Where does Yoni Cheifetz work?
Yoni Cheifetz is Partner at Lightspeed Venture Partners and Board director at Harmony IT.
What does Yoni Cheifetz invest in?
Yoni Cheifetz invests in AI & Machine Learning, Consumer, Enterprise Software, Fintech, Healthtech.
What check size does Yoni Cheifetz write?
Yoni Cheifetz typically writes checks of $25K – $20M.
What boards does Yoni Cheifetz sit on?
Yoni Cheifetz holds tracked board seats at Harmony IT, Nominal.
Where did Yoni Cheifetz go to school?
Yoni Cheifetz studied at Weizmann Institute of Science; Tel Aviv University.

Same school

Also attended Weizmann Institute of Science19

Yaron DanielyGeneral Partner & Head of aMoon Alpha at aMoonReut ShemaPartner at aMoonHagai Marmor-KolletAssociate at aMoonItzik ParnafesVenture Partner at Key1 CapitalPete FlintInvestor at NFXShiran Tehila MashiahPrincipal at Peregrine Ventures

+ 13 more

Also attended Tel Aviv University412

Matan RoetAssociate at Redpoint VenturesArnon DinurPartner at 83NorthYoram SnirPartner at 83NorthRaz MaysharSenior Manager at Qualcomm VenturesDavid GoldschmidtManaging Director, Head of the Fund at Samsung Catalyst FundAmit ShofarSr. Investment Director at Samsung Catalyst Fund

+ 406 more

Shared employers

Also worked at Theranica Bio-Electronics Ltd.5

Todd SoneGeneral Partner at aMoonIvan GergelManaging Partner and Chief Medical Officer at New Rhein Healthcare Investors, LLCNishant RastogiVice President at New Rhein Healthcare Investors, LLCUri KedemAnalyst at aMoonTim McCarthyVenture Partner at Crowberry Capital

Also worked at At-Bay7

Mark KraynakInvestor at Aspect VenturesPreeti RathiGeneral Partner at Icon VenturesAlex GinzburgPartner and Head of Risk at Viola CreditJuan Manuel Fernández LobatoVenture Partner at 83NorthLior LitwakManaging Partner at Glilot Capital PartnersFrederik BarsøePR & Communications Lead at Scale Capital

+ 1 more

Also worked at Outbrain8

Shardul ShahInvestor at Index VenturesJonathan KlahrInvestor at Susquehanna Growth EquityDaniel CohenSenior Advisor at Viola VenturesDaniel RecanatiFounder and CEO at RhodiumZiv KopManaging Partner at O.G. Venture PartnersGary RagusaVenture Partner at Carbon Ventures

+ 2 more

Also worked at Sheer Networks1

Erel MargalitFounder & Executive Chairman at Jerusalem Venture Partners (JVP)