Brett Berson
Partner at First Round Capital
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Brett Berson is a Partner at First Round Capital since 2016, leading the firm's Platform team (The Review publication, Angel Track, In Depth podcast). His 3 verified investments—Clay, Stedi, Persona—are enterprise infrastructure companies. He articulates a 'slow bake' vs. 'fast bake' framework for founders, showing patience with companies taking years to reach product-market fit. Grew up at First Round since 2008, progressing from intern to partner.
Background
Brett Berson is a Partner at First Round Capital, where he has spent his entire career since joining as a college intern in 2008 12. He progressed from intern to associate (2010-2012), to Vice President of Platform, and was named Partner in September 2016 23. Berson graduated from New York University with degrees earned with highest distinction in economics and film 1. He was named to Forbes’ 30 Under 30 list in venture capital in 2015 4.
Berson has carved out a distinctive dual role at First Round, working across both investing and firm operations 1. He leads First Round’s Platform team, which focuses on transforming the firm’s portfolio companies into a connected community of entrepreneurs 14. He was the architect behind several of First Round’s defining initiatives, including The Review (the firm’s widely-read publication featuring tactical advice from founders), Angel Track (a program helping operators become angel investors), and the In Depth podcast, which he hosts 15.
Stated Thesis
Berson publicly describes his interest in founders who “imagine if” — visionaries pursuing the most meaningful progress 1. He has stated that he believes the parallels between filmmaking and startup building are instructive, noting that successful companies are built on countless compounding micro-decisions 1.
Berson has publicly emphasized his interest in systems of record, deep infrastructure, and businesses with strong network effects 4. First Round as a firm invests exclusively at the earliest stages, typically in a company’s first formal round 6.
Berson has articulated a framework distinguishing between “fast bake” companies (where momentum is visible early, like Uber and Square) and “slow bake” companies (where the journey to product-market fit takes longer, like Roblox and Clay) 7. This suggests patience with companies that take years to find their footing.
Inferred Thesis
Based on 3 verified personal investments (Clay, Stedi, Persona) listed on the First Round website 1, the sample size is too small for reliable percentage breakdowns. Qualitative observations:
Sector focus: All three verified investments are enterprise/B2B infrastructure companies — Clay (go-to-market tools), Stedi (healthcare claims processing APIs), and Persona (identity verification platform). This is consistent with his stated interest in systems of record and deep infrastructure 14.
Stage pattern: All three investments were at the seed stage, consistent with First Round’s focus on the earliest institutional rounds 6. Clay’s seed was $2.5M led by First Round in 2017 8. Stedi’s seed was $2.7M in 2017 9. Persona’s first round from First Round came at the Series A stage ($17.5M, January 2020) 10.
Founder profile: His portfolio founders include technical builders with deep domain expertise — Kareem Amin (Clay) previously built products at multiple companies, Zack Kanter (Stedi) brought supply chain expertise, and Rick Song (Persona) spent 5 years as an engineer at Square working on identity and fraud 1112.
Patience with slow growth: Clay spent roughly six years building before experiencing significant customer and revenue growth, reportedly near $0 in revenue as recently as spring 2022 8. This aligns with his “slow bake” framework 7.
Follow-on conviction: First Round has participated in follow-on rounds for all three companies — Clay through Series B 13, Stedi through Series B 14, and Persona through Series D 1015.
Note: Only 3 investments could be independently verified as personally attributed to Berson. As a partner at First Round, he is likely involved in many more deals at the firm level, but individual attribution is limited in public sources.
Portfolio
| Company | Year | Stage | Source |
|---|---|---|---|
| Clay | 2017 | Seed ($2.5M, led) | 8 |
| Stedi | 2017 | Seed ($2.7M) | 9 |
| Persona | 2020 | Series A ($17.5M) | 10 |
Note: This table represents only investments explicitly attributed to Brett Berson on the First Round website 1. First Round has invested in 500+ startups as a firm 6, and Berson has been a partner since 2016, so his actual deal involvement is likely substantially larger. Companies like Roblox, Square, Notion, Uber, Verkada, and Looker are First Round portfolio companies but cannot be confirmed as Berson’s personal deals from available public sources.
In Their Own Words
“It’s a bit strange to only have one job for your entire career, but I’ve spent over 15 years at First Round because I believe the most meaningful progress throughout history comes from people who ‘imagine if.’” — Brett Berson, First Round website 1
“Studying film taught me to pay attention to the thousands of micro-decisions — lighting choices, camera angles, editing cuts — that most never notice.” — Brett Berson, First Round website 1
“Some companies are what we at @firstround like to call a ‘fast bake,’ where the ingredients coalesce from the start. (Uber and Square are examples — early on we saw strong momentum.) But others are more of a ‘slow bake,’ or an under-the-radar journey to land on the right product.” — Brett Berson, X/Twitter post, June 2024 7
“I’m a strong believer that working with outstanding people is one of the best things you can do.” — Brett Berson, Mike Robbins podcast 16
“It’s all about getting to a term sheet. Without one, you don’t have leverage.” — Brett Berson, First Round Review 17
“If you’re in education, think about the start of the school year. September is probably a great time to raise because your performance in August is ticking up, and by September and October you’re on a roll.” — Brett Berson, First Round Review 17
“Keep in mind that you’re having these fundraising conversations over a period of about 4 to 12 weeks. As you’re fundraising, more data’s coming in. The ideal is that data — whether it be user growth or new enterprise customers — is looking good and you’re on the upswing.” — Brett Berson, First Round Review 17
What Founders Say
Kareem Amin, co-founder and CEO of Clay, thanked Berson in Clay’s funding announcement: “We also want to thank Brett Berson for his advice, check-ins and infectious optimism.” 13
No other independently sourced founder testimonials found. Berson’s portfolio founders have appeared on his In Depth podcast (Rick Song of Persona 11, Zack Kanter of Stedi 12, Kareem Amin of Clay 18), but these interviews did not include explicit testimonials about Berson as an investor.
Sources
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First Round Capital website, “Brett Berson” team page, accessed March 2026. https://www.firstround.com/team/investing/brett-berson↩↩↩↩↩↩↩↩↩↩↩↩
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Signal by NFX, “Brett Berson’s Investing Profile,” accessed March 2026. https://signal.nfx.com/investors/brett-berson↩↩
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Annie Duke Substack, “Join me for a conversation with Brett Berson, Partner at First Round Capital,” accessed March 2026. https://annieduke.substack.com/p/join-me-for-a-conversation-with-brett↩
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Forbes 30 Under 30 list reference via Annie Duke and VCSheet profiles, accessed March 2026. https://www.vcsheet.com/who/brett-berson↩↩↩↩
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Apple Podcasts, “In Depth” podcast page, accessed March 2026. https://podcasts.apple.com/us/podcast/in-depth/id15358863↩
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First Round Capital website, “Companies” portfolio page, accessed March 2026. https://www.firstround.com/companies↩↩↩
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Brett Berson (@brettberson), X/Twitter post about “fast bake” and “slow bake” companies, June 2024, accessed March 2026. https://x.com/brettberson/status/1806353232278728935↩↩↩
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Crunchbase News, “AI-Powered Sales Automation Startup Clay More Than Doubles Valuation To $3.1B,” accessed March 2026. https://news.crunchbase.com/venture/ai-powered-gtm-startup-clay-valuation-doubles-capitalg/↩↩↩
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Crunchbase, “Seed Round - Stedi - 2017-07-10,” accessed March 2026. https://www.crunchbase.com/funding_round/stedi-seed–d223ab0f↩↩
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Tracxn, “Persona - 2026 Funding Rounds & List of Investors,” accessed March 2026. https://tracxn.com/d/companies/persona/__t1FJBkRZQsH6YTCPdh8R44ib5y1AasDnLJ8BnP10rQg/funding-and-investors↩↩↩
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First Round Review podcast, “From reluctant founder to $2B valuation: The story of Persona | Rick Song,” accessed March 2026. https://review.firstround.com/podcast/from-reluctant-founder-to-2b-valuation-the-story-of-persona-rick-song-co-founder-and-ceo/↩↩
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First Round Review podcast, “How to build a company you’ll run forever | Zack Kanter (Founder and CEO of Stedi),” accessed March 2026. https://review.firstround.com/podcast/how-to-build-a-company-youll-run-forever-zack-kanter-founder-and-ceo-of-stedi/↩↩
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Clay blog, “Clay raises $62M to turn any growth idea into reality,” accessed March 2026. https://www.clay.com/blog/clay-raises-62m-to-turn-any-growth-idea-into-reality↩↩
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Stedi blog, “Announcing Stedi’s $70 million Series B,” accessed March 2026. https://www.stedi.com/blog/series-b↩
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PR Newswire, “Persona raises $200M at $2B valuation to build the verified identity layer for an agentic AI world,” April 2025, accessed March 2026. https://www.prnewswire.com/news-releases/persona-raises-200m-at-2b-valuation-to-build-the-verified-identity-layer-for-an-agentic-ai-world-302442649.html↩
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Mike Robbins podcast, “Giving Life to Great Business Ideas with Brett Berson,” accessed March 2026. https://mike-robbins.com/podcast-post/giving-life-to-great-business-ideas-with-brett-berson/↩
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First Round Review, “The Fundraising Wisdom That Helped Our Founders Raise $18B in Follow-On Capital,” accessed March 2026. https://review.firstround.com/the-fundraising-wisdom-that-helped-our-founders-raise-18b-in-follow-on-capital/↩↩↩
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First Round Review podcast, “Clay’s path to product-market-fit: Building vertical, creating power users, and understanding founder psychology | Kareem Amin,” accessed March 2026. https://review.firstround.com/podcast/clays-path-to-product-market-fit-building-vertical-creating-power-users-and-understanding-founder-psychology-kareem-amin-co-founder-and-ceo/↩