Fundraising Fox

Ethan Kurzweil

Investor

Managing Partner at Chemistry · Partner at Bessemer Venture Partners · Board director at PagerDuty

San Francisco, California

Writes $3M – $25M checks · typically $10M

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.

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

Invests in

AI & Machine LearningConsumerData & InfrastructureDeveloper ToolsEnterprise SoftwareFintechGamingHealthtechSaaS

Beyond investing

Founded
Ethan Kurzweil founded Chemistry VC, an early-stage venture firm focused on Series A investments.

From published sources — common ground for a warm intro.

Board director at PagerDutyYC S10

Intro paths

YC

Ethan went through Y Combinator (Summer 2010) — any YC alum in your network can reach them through the YC community.

In turn, Ethan can intro founders to PagerDuty's investors below.

Co-founders at PagerDuty

ASAlex Solomon
Alex SolomonFounder/CTO
DA
Dan Alexandru SolomonDirector

Experience

  1. ChemistryFounder & Managing Partnercurrent2024 — presentSan Francisco, California, United States
  2. LaunchDarklyBoard Member2019 — 2025
  3. IntercomBoard Member2014 — 2025
  4. Bessemer Venture PartnersPartner2008 — 2024San Francisco Bay Area
  5. Basis TheoryBoard Member2021 — 2024
  6. TRM LabsBoard Member2021 — 2024
  7. BlitzInvestor and Board Member2019 — 2024
  8. ManyChatBoard Member2018 — 2024
  9. TSMBoard Member2018 — 2024
  10. HashiCorpInvestor2018 — 2021
  11. PagerDutyBoard Member2014 — 2020
  12. npm, Inc.Board Member2015 — 2020
  13. Life360Investor2011 — 2019
  14. SendGridInvestor and Board Observer2012 — 2017
  15. New LeadersAdvisory Board Member, Bay Area2009 — 2016
  16. Twilio Inc.Investor and Board Observer2010 — 2016
  17. TwitchBoard Member2012 — 2014
  18. Skybox ImagingInvestor and Board Observer2010 — 2014
  19. Linden LabCEO's Office and Marketing/Community2007 — 2008
  20. Dow Jones & Co.Senior Manager, Office of the CEO2004 — 2006
  21. New York City Department of EducationAssociate, Chancellor's Strategic Initiatives Group2002 — 2004
  22. McKinsey & Co.Business Analyst2001 — 2003
  23. Level AccessFounder and Director of Business Development1999 — 2001San Francisco, California, United States

Skills & more

Start-ups48User Experience16Digital Media24Business Development12Venture Capital8Strategic Partnerships12Product Management2Entrepreneurship8Business StrategySaaSAnalyticsProduct Marketing
+1 moreE-commerce

From Ethan's professional profile.

Deals · 1

View The SpaceBoard seat

via Bessemer Venture Partners · filed Jan 2017

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

Other disclosed investments

Sources: curated public sources · SEC Form D filings.

Colleagues at Chemistry

Network8

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

Frequently asked questions

Who is Ethan Kurzweil?
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.
Where does Ethan Kurzweil work?
Ethan Kurzweil is Managing Partner at Chemistry and Board director at PagerDuty.
What does Ethan Kurzweil invest in?
Ethan Kurzweil invests in AI & Machine Learning, Consumer, Data & Infrastructure, Developer Tools, Enterprise Software, Fintech, Gaming, Healthtech, SaaS.
What check size does Ethan Kurzweil write?
Ethan Kurzweil typically writes checks of $3M – $25M.
What boards does Ethan Kurzweil sit on?
Ethan Kurzweil holds tracked board seats at View The Space.
What companies has Ethan Kurzweil invested in?
Investments tracked here include Intercom, PagerDuty, SendGrid.
Where did Ethan Kurzweil go to school?
Ethan Kurzweil studied at Stanford University (A.B., Economics); Harvard Business School (MBA, Business).
Does Ethan Kurzweil lead rounds?
Yes — Ethan Kurzweil has led 3 tracked investments.

Founder mafias

Stanford University mafia903

Also came through, then founded or led a company.

+ 896 more

Harvard Business School mafia323

Also came through, then founded or led a company.

+ 316 more

Bessemer Venture Partners mafia17

Also came through, then founded or led a company.

+ 10 more

Twitch mafia17

Also came through, then founded or led a company.

+ 10 more

LaunchDarkly mafia7

Also came through, then founded or led a company.

Same school

Shared employers