Founders do not lose a company in one decision. They lose it in six decisions that each made sense at the time.
Here is a realistic three-year sequence. The numbers are synthetic. The mechanics are not.
Year 0. The split.
You start with 100%. You find a co-founder and split 60/40. No vesting schedule. No cliff. You are moving fast, and asking a co-founder to earn shares over four years feels like distrust.
It is not distrust. It is the difference between a partner who stays and a shareholder who left in month nine and still owns 40% of everything you build after.
Year 1. Pre-seed.
Angels put in SAR 500k for 15%. Quick close, no lead investor, no board structure negotiated properly. The instruments are SAFE notes with uncapped valuation.
An uncapped SAFE is often described as founder-friendly because there is no valuation fight today. What it actually is: undated dilution nobody has modeled. The dilution is real, it is signed, and its size will be decided later, by a round you have not raised yet.
Table: Founder 1 at 51%, Founder 2 at 34%, angels at 15%. Feels fine.
Year 1. Seed.
A VC leads at $2M for 20%. Standard terms: 1x liquidation preference, broad-based weighted average anti-dilution. And the clause founders skim past: a 10% ESOP created pre-money.
Pre-money pool creation means the pool is carved out before the new money arrives. The investor’s 20% is calculated after the carve-out. The dilution lands entirely on existing shareholders, which at this stage means mostly you.
Table: Founder 1 at 36.7%, Founder 2 at 24.5%, angels at 10.8%, ESOP at 8%, seed VC at 20%. Still manageable.
Year 2. The bridge.
Growth is real but cash conversion is slow. Receivables build. Payroll is in three weeks. You need money fast, and everyone at the table knows it.
You take a convertible note. SAR 1M, 20% discount, no cap. You sign in 48 hours because you have no alternative and no leverage.
This is the moment founders do not model. Emergency capital is always priced against you, and the price is not the discount. The price is that the note now sits on top of the cap table waiting for the next round to convert into more equity than the money was worth.
Year 2. Series A.
Revenue is growing. You raise $6M at $20M pre-money. The bridge converts at its discount. The lead requires an ESOP refresh: another 5%, created pre-money again. The seed investor exercises pro-rata.
Table: Founder 1 at 24.1%, Founder 2 at 16.1%, angels at 7.1%, seed VC at 13.1%, Series A at 24%, ESOP at 11.9%.
Nothing dramatic happened in this round. That is the point. Every mechanism worked exactly as documented.
Year 3. The down round.
Market conditions turn. Q3 revenue misses. The new investor requires a 2x liquidation preference and full ratchet anti-dilution.
Full ratchet means every prior investor’s price resets to the new, lower valuation, as if they had invested at that price all along. The shares to make them whole come from somewhere. They come from the founders.
Table: Founder 1 at 9.8%, Founder 2 at 6.5%.
What the table shows
The company still operates. Revenue is real. The team is intact. The founders own less than 17% combined, and with preferences stacked at 2x on the last round, they are last in line for meaningful money at exit.
What went wrong is not one decision. It is the compounding: no vesting on the split, no cap on the SAFE, pool created pre-money twice, emergency capital taken with zero leverage, a full ratchet signed without modeling the downside.
Each decision was locally rational. Together they transferred the company.
Founders who understand these mechanics before the first round negotiate differently. They push back on ESOP timing. They model the table at Series B before signing at pre-seed. They know what a full ratchet does before a down round makes it real.
Structure is not paperwork. It is the document that decides who owns the outcome.