Setting up a sound legal foundation could be what saves a startup down the line. A missing founder vesting agreement, an unclear IP agreement, or a messy cap table can derail fundraising, spark co-founder disputes, or even kill an otherwise promising company before it has a chance to scale.
In this episode of Build Mode, host Isabelle Johannesen sits down with Kristina Subbotinai, founder and CEO of Lesxy and former startup attorney at Cooley, to break down the legal fundamentals every founder needs to get right.
They get into:
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The four legal mistakes that can make a startup unfundable
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How founder vesting, IP assignment, Delaware incorporation, and 83(b) elections protect your company
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What VCs actually look for during due diligence and how to avoid common red flags
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How founders should negotiate valuation, board control, and investor rights
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Why leverage comes from building a great business—not signing better term sheets
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Chapters:00:00 – Intro: The Legal Mistakes That Kill Startups01:37 – Why Kristina built Lexsy03:58 – The Legal Foundations Every Startup Needs08:22 – How to Find the Right Startup Lawyer10:21 – The Four Non-Negotiable Legal Decisions17:33 – What Investors Look for During Due Diligence20:04 – SAFE Notes vs. Priced Rounds22:18 – Negotiating Valuation Without Losing Control25:25 – Board Seats, Investor Rights, and Hidden Term Sheet Traps30:51 – Should Founders Use AI for Legal Advice?31:04 – How Founders Build Leverage in Fundraising35:48 – The Terms That Can Destroy Founder Wealth37:01 – The Craziest Startup Legal Story Kristina Has Ever Seen
Hosted by Isabelle Johannessen. Produced and edited by Maggie Nye. Audience development led by Morgan Little. Special thanks to the Foundry and Cheddar video teams.
