What Sean Ellis thinks about product management
American growth marketer who coined the term growth hacking; led early growth at Dropbox, Eventbrite, LogMeIn and Lookout, and co-wrote Hacking Growth (2017).
Sean Ellis did not write this page.
We collected these quotes from things they published elsewhere, and every quote links to where it was said. They have no account here and have not endorsed this site. Quotes are word for word; the short line under each one is our own restatement, not their wording. Their own site. Is this you? Claim it or ask us to remove it. Or tell us what is wrong here.
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3 dated positions, 2026, in their own words. Our reading of what Sean Ellis has said — not written or endorsed by them.
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Our readingWhat users actually do matters far more than what they say in a product/market fit survey.
Their wordsBut ultimately real user behavior is much more important than what users say in a survey.
↗Is Product/Market Fit Hiding in Your User Base?seanellis.substack.com 2nd of 4 in this piece
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Their wordsI’ve increasingly come to think of product/market fit as something that you search for rather than simply measure.
↗Is Product/Market Fit Hiding in Your User Base?seanellis.substack.com 3rd of 4 in this piece
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Their wordsFor companies scoring above 40% on the PMF survey but struggling to find a plateauing retention cohort, I would therefore consider the survey result encouraging rather than contradictory.
↗Is Product/Market Fit Hiding in Your User Base?seanellis.substack.com 4th of 4 in this piece