How the Option Pool Shuffle Affects Founder Dilution at Closing

When an investor requires an option pool top-up as a condition of a priced round, that top-up is typically allocated from the pre-money value rather than the post-money value. This means the option pool shares are created from the existing shareholders' equity before the investor's money arrives, reducing the founders' percentage before the investor's ownership is calculated. The investor then buys their percentage of a company in which the option pool has already been enlarged at the founders' expense.

The Distinction That Matters

The option pool shuffle is legal. It is also the mechanism by which founders lose equity before a term sheet is signed — and most founders do not notice it until the closing cap table is modeled. A round priced at £8M pre-money with a 15% fully diluted option pool required by the investor does not mean the investor values the existing shares at £8M. It means the investor values the company at £8M including a newly enlarged option pool that the founders are funding.

The practical test: build the post-close fully diluted cap table with and without the pool top-up taken pre-money versus post-money. The difference in founder ownership between the two models is the economic impact of the shuffle on that specific round.

Why It Surfaces in a Raise Process

In a Series A term sheet, the option pool requirement is typically listed as a percentage of the post-close fully diluted share count. This seems straightforward. The issue is that the shares required to reach that percentage are created before the investment closes, from shares that were previously part of the founders' and existing investors' holdings. A founder whose legal advisor does not model the post-close cap table before signing the term sheet may discover at closing that their ownership is materially lower than the term sheet economics implied.

The Common Structural Error

The most common error is modeling the option pool top-up as a post-money event, treating it as dilution that affects all shareholders equally. In most term sheet structures it is a pre-money event that affects existing shareholders only, which concentrates the dilution on founders and any pre-existing investors who do not have anti-dilution protection applying to this specific mechanism.

RELATED TERMS
- What Pre-Money and Post-Money Valuation Mean in a Term Sheet
- What a Fully Diluted Cap Table Records
- How a Waterfall Analysis Distributes Exit Proceeds
- The Cap Table as a Source of Truth

Tool: Financial Model Blueprint