Joseph Ansanelli
InvestorFounderPartner at Greylock Partners · Co-Founder and Executive Chairman (formerly CEO) at Gladly · Board director at Sumo Logic · Cofounder and Executive Chairman at Thankful
San Francisco, California
Writes $4M – $40M checks · typically $8M
FoundedGladlyThankfulSumo Logic
About
Joseph Ansanelli is Executive Chairman and co-founder of Gladly, a customer service software company. He has spent his career as an entrepreneur building and investing in companies across various sectors.
Co-Founder and Executive Chairman (formerly CEO) at Gladly
Intro paths
In turn, Joseph can intro founders to Gladly's investors below.
Gladly's investors · 11
Co-founders at Gladly






Board director at Sumo Logic
Intro paths
In turn, Joseph can intro founders to Sumo Logic's investors below.
Sumo Logic's investors · 17
Co-founders at Sumo Logic





Cofounder and Executive Chairman at Thankful
Intro paths
In turn, Joseph can intro founders to Thankful's investors below.
Thankful's investors · 3
Co-founders at Thankful
Experience
- GladlyExecutive Chairman and Co-foundercurrent2025 — present
- GladlyCEO and Co-founder2015 — 2025San Francisco Bay Area
- GreylockVenture Partnercurrent2017 — presentMenlo Park
- GreylockGeneral Partner2012 — 2017
- Grand Rounds, Inc.Investorcurrent2014 — present
- LookoutInvestorcurrent2009 — presentSan Francisco, CA
- Sumo LogicBoard Member and Investor2013 — 2023
- TrifactaBoard Member and Investor2013 — 2022
- SmartlingInvestor2009 — 2021New York, NY
- The Wharton SchoolBoard Member, Undergraduate Executive Board2008 — 2016
- MobileIronInvestor2009 — 2015
- PipewiseBoard Member2010 — 2012San Francisco
- ZangZing.comCo-Founder & Investor2010 — 2012
- SymantecVP, Data Loss Prevention Solutions (Vontu Division)2007 — 2008
- Vontu, Inc.CEO2002 — 2008
- KANA SoftwareVP Marketing1999 — 2000
- ConnectifyCEO and Co-founder1997 — 1999
- AdobeDirector of Product Management1996 — 1997
- AppleProduct Manager1992 — 1996
- Trio DevelopmentCo-founder and CEO1991 — 1994
Education
- The Wharton SchoolBS, Applied Economics1988 — 1992
Skills & more
+12 more
EntrepreneurshipCorporate DevelopmentGo-to-market StrategyProduct MarketingBusiness DevelopmentCloud ComputingMergersProduct ManagementAnalyticsMobile DevicesCRMSecurityFrom Joseph's professional profile.
Deals · 1
Sumo LogicBoard seat
via Greylock Partners · filed May 2019 · $110M raise
Attribution from SEC filings, press coverage, and firm rosters.
Colleagues at Greylock Partners
Frequently asked questions
- Where does Joseph Ansanelli work?
- Joseph Ansanelli is Partner at Greylock Partners and Co-Founder and Executive Chairman (formerly CEO) at Gladly and Founder at Sumo Logic and Cofounder and Executive Chairman at Thankful.
- What check size does Joseph Ansanelli write?
- Joseph Ansanelli typically writes checks of $4M – $40M.
- What companies did Joseph Ansanelli found?
- Joseph Ansanelli founded Gladly, Thankful, Sumo Logic.
Founder mafias
The Wharton School mafia198
Also came through, then founded or led a company.
+ 191 more
Greylock Partners mafia9
Also came through, then founded or led a company.
+ 2 more
Grand Rounds mafia3
Also came through, then founded or led a company.
Smartling mafia3
Also came through, then founded or led a company.
MobileIron mafia2
Also came through, then founded or led a company.
Same school
Also attended The Wharton School1,481
+ 1,475 more
Shared employers
Also worked at Greylock65
+ 59 more
Also worked at Sumo Logic15
+ 9 more
Also worked at Symantec84
+ 78 more
Also worked at Adobe119
+ 113 more











































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