Sarah Leary

Who they are

Sarah Leary is a Venture Partner at Unusual Ventures — co-founded Nextdoor in 2010 and earlier co-founded Fanbase, a crowd-sourced athlete almanac that returned its $5M Benchmark round after two years.

Person

Sarah took a BA in Economics from Harvard College, then an MBA from Harvard Business School — a classic operating path before either credential was typical in tech. She started at Microsoft as a Product Manager on the Office team, moved to Epinions (which became Shopping.com under eBay), then spent time at Benchmark Capital and Greylock Partners as Entrepreneur-in-Residence, which is where the founding bets got serious. In 2008 she co-founded Fanbase, a crowd-sourced almanac of professional and college athletes, alongside Nirav Tolia and Prakash Janakiraman — the team raised $5M from Benchmark, ran it two years, then returned the capital and shut it down. That same trio pivoted to co-found Nextdoor in 2010; Sarah ran marketing and global business operations as Co-Founder, CMO, and CBO through its growth to over 60 million members, leaving in 2019 and staying on as board observer. She joined Unusual Ventures in June 2020 when it was an early-stage firm. Her public writing on the Unusual blog and the Startup Field Guide podcast focuses on product-market fit and community building — practical lessons drawn from Nextdoor's early years — and she spoke at TEDxCity2.0 on 'The Neighborhood: The Original Social Network' and at the MIT FinTech Conference in 2022 on AI, data privacy, and enterprise infrastructure.

Network

Her deepest co-founding ties are to Nirav Tolia and Prakash Janakiraman, with whom she built both Fanbase and Nextdoor. At Unusual Ventures, she was welcomed by partner John Vrionis. She also sits on the board of Spindrift Beverage Co. and has served as Entrepreneur-in-Residence at the Harvard Arthur Rock Center for Entrepreneurship.

Nirav Tolia· Co-founder, Fanbase and Nextdoor
Prakash Janakiraman· Co-founder, Fanbase and Nextdoor
John Vrionis· Partner, Unusual Ventures

How they likely show up

Nearly a decade as a Nextdoor co-founder running marketing and global operations → she thinks in long build cycles, not quick flips; expect her to probe durability over near-term metrics.
Co-founded Fanbase, raised $5M, then returned it and shut down rather than push a bad thesis → she has a high tolerance for honest failure and likely respects founders who cut losses cleanly.
Hybrid role pattern (operator → EIR → VC) → she bridges founder empathy and investor discipline; she'll read a room both as someone who's been on the other side of the table and as someone evaluating it.
Active writer on the Unusual blog and Startup Field Guide podcast on product-market fit → she processes ideas publicly and probably responds well to specific, structured questions over vague brainstorming.
Gave a TEDx talk framing the neighborhood as 'the original social network' → she has a practiced point of view on community as infrastructure, not feature; expect that lens to surface in product conversations.

Conversation tips

→ Reference a specific post or podcast episode from Startup Field Guide — she'll know immediately whether you've actually read it.
→ Ask about the Fanbase decision to return the $5M; it's a rare and deliberate choice that likely shaped how she evaluates founder conviction and honest self-assessment.
→ She has a TEDx talk with a fully formed thesis on neighborhood as social infrastructure — engage with the idea specifically rather than complimenting it generically.
→ She went from operator to VC; she'll appreciate if you acknowledge the difference between what she built and what she now backs — don't conflate the two roles.

Toolbox

Openers

Open on the Fanbase decision — she co-founded it with Tolia and Janakiraman, raised $5M from Benchmark, ran it two years, then returned the capital and shut it down. That's an unusual call that says a lot about how she operates.
Reference her TEDxCity2.0 talk, 'The Neighborhood: The Original Social Network' — it's a fully formed argument that neighborhood infrastructure predates every social platform, and it's the intellectual spine of everything she built at Nextdoor.
Mention the Unusual Ventures Startup Field Guide and her writing on how Nextdoor found product-market fit — she's invested time making those lessons public, and engaging with the specifics signals you've done the work.

Discovery questions

When you returned the $5M from Benchmark after Fanbase, what made that the right call over pivoting again — and how does that experience shape how you advise founders today?
Nextdoor grew to over 60 million members as a neighborhood-first network — at what point did the community mechanics stop being something you designed and start being something you just had to protect?
You joined Unusual in 2020 as a co-founder turned investor — what do you find operators consistently get wrong about early-stage fundraising that you only saw clearly once you switched sides?

Avoid

Don't treat her VC role as her primary identity — she spent nearly a decade building Nextdoor as an operator, and she brings that lens into every investing conversation; leading with generic 'what do you look for in founders' questions undersells what she actually brings to the table.

Make it yours