Chapter One — Pre-Seed & Seed VC Firm ($50K–$250K Checks)
Chapter One is a Pre-Seed, Seed venture capital firm based in London, England investing in SaaS, AI / ML, Marketplace. The firm typically writes $50K–$250K checks and has 12 portfolio companies in our records.
- Check size
- $50K–$250K
- Portfolio
- 12 companies on record
- Partners
- 7 listed
- Stage
- Pre-Seed, Seed
- Sectors
- SaaS, AI / ML, Marketplace, Developer Tools
- HQ
- London, England
- AUM
- Not in our records
Last verified: 2026-10-05
Pre-Seed, Seed
$50K – $250K
12+ companies
7 partners
Investment Thesis
Chapter One invests early in software founders globally, often at very small check sizes. It can be a fit for a merchant SaaS tool with technical depth and early customer pull.
How Chapter One invests
Chapter One is a vc firm based in London, England. The firm invests at the Pre-Seed, Seed stages, with a focus on SaaS, AI / ML, Marketplace, Developer Tools.
Chapter One typically writes checks of $50K–$250K per investment.
Chapter One has backed 12 companies in our records, including Supabase, Epirus, Helius.
Partners & Team
David W. Smith
Partner
Jeff Morris Jr.
General Partner
Jeff Morris Jr. is the founder and General Partner of Chapter One, a seed-stage venture firm built on a simple belief: the best founders think like product people. Jeff spent years as VP of Product, Revenue at Tinder, leading the team that made it the top-grossing app in the App Store. He began investing as a scout at Index Ventures and has since backed 11 unicorns at the seed stage, including Mercury, Supabase, Turing, Compound Finance, and Ondo Finance.
Jamesin Seidel
General Partner
Jamesin Seidel came to venture through an unlikely path: anti-spam, online safety, and professional sports betting. Before Chapter One, Jamesin was the technical lead for platform manipulation at Twitter, where she built algorithms to combat large-scale spam, led white hat investigations, and co-led Twitter’s congressional testimony on malicious automation and foreign interference during the 2016 election.
Karolina Dubiel
Investor
Karolina Dubiel invests in deep tech, with a focus on robotics and physical AI. Her background is in machine learning and cybersecurity. Before Chapter One, she was a two-time Apple intern in information security and software engineering. In between, she worked on Starlink at SpaceX and built a security platform at Samsung.
Industry Focus
Invests In
Portfolio Companies (12)
Other
Supabase
Open-source Firebase alternative for developers
Epirus
Directed-energy systems for countering drone swarms
Helius
Infrastructure for Solana applications
Erebor
Building a bank for the innovation economy
Mercury
Banking platform for startups
Together.ai
Cloud platform for open-model AI workloads
Mach Industries
Defense manufacturing startup rebuilding American defense production
Ether.Fi
Infrastructure for moving value through blockchain systems
General Intuition
Research lab teaching machines to understand space and time
Superhuman
- •Raising at Pre-Seed, Seed? You're squarely in their sweet spot.
- •Lead with your fit in SaaS, AI / ML, Marketplace — the sectors they actively back.
- •Size your ask to their typical $50K – $250K check.
- •cold outreach ok
- •Address your outreach to a specific partner, such as Lauren Hill, Executive Assistant.
- •A warm introduction beats a cold email. Get matched and request an intro.
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