Ethan Kurzweil
InvestorManaging Partner at Chemistry · Partner at Bessemer Venture Partners
San Francisco, California
Writes $3M – $25M checks · typically $10M
FoundedPager Duty · YC
About
Ethan Kurzweil, co‑founder and managing partner, makes 5–10 concentrated, pure early‑stage bets annually on non‑consensus founders and monopolistic AI/developer plays, evidenced by early investments in Twilio, PagerDuty, Intercom, and LaunchDarkly.
Ethan Kurzweil @ethankurz
Welcome to married life @leopoldasch. It gets better!
Jul 31, 2026 · ♥ 126 · ⇄ 1
Ethan Kurzweil @ethankurz
The OGs https://t.co/IAtXRellLP
Jul 30, 2026 · ♥ 6
Ethan Kurzweil @ethankurz
I may have to revisit my 'I don't wear a watch' stance now ⌚️ https://t.co/z6Y4Sdi2kd
Jul 28, 2026 · ♥ 19
Invests in
AI & Machine LearningConsumerData & InfrastructureDeveloper ToolsEnterprise SoftwareFintechGamingHealthtechSaaS
Experience
- ChemistryFounder & Managing Partnercurrent2024 — presentSan Francisco, California, United States
- LaunchDarklyBoard Member2019 — 2025
- IntercomBoard Member2014 — 2025
- Bessemer Venture PartnersPartner2008 — 2024San Francisco Bay Area
- Basis TheoryBoard Member2021 — 2024
- TRM LabsBoard Member2021 — 2024
- BlitzInvestor and Board Member2019 — 2024
- ManyChatBoard Member2018 — 2024
- TSMBoard Member2018 — 2024
- HashiCorpInvestor2018 — 2021
- PagerDutyBoard Member2014 — 2020
- npm, Inc.Board Member2015 — 2020
- Life360Investor2011 — 2019
- SendGridInvestor and Board Observer2012 — 2017
- New LeadersAdvisory Board Member, Bay Area2009 — 2016
- Twilio Inc.Investor and Board Observer2010 — 2016
- TwitchBoard Member2012 — 2014
- Skybox ImagingInvestor and Board Observer2010 — 2014
- Linden LabCEO's Office and Marketing/Community2007 — 2008
- Dow Jones & Co.Senior Manager, Office of the CEO2004 — 2006
Education
- Stanford UniversityA.B., Economics1997 — 2001
- Harvard Business SchoolMBA, Business2006 — 2008
Skills & more
+1 more
E-commerceFrom Ethan's professional profile.
Same school
Also attended Stanford University1,726
+ 1,720 more
Also attended Harvard Business School1,818
+ 1,812 more
Shared employers
Also worked at Bessemer Venture Partners139
+ 133 more
Also worked at TRM Labs3
Also worked at ManyChat2
Deals · 1
View The SpaceBoard seat
via Bessemer Venture Partners · filed Jan 2017
Attribution from SEC filings, press coverage, and firm rosters.
Colleagues at Chemistry
Network7
Investors connected to Ethan in public investor directories — a warm-intro map.
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