Full Definition
The option pool is a reserved allocation of unissued shares (or equity units in the case of LLCs) designated for distribution as equity compensation to employees, directors, advisors, and service providers through stock options, RSUs, or other equity instruments. A typical venture-backed startup maintains an option pool of 15–20% of fully diluted capitalization, refreshed through board authorization as the pool is depleted through grants. The option pool is established before closing new financing rounds (when it's part of the pre-money capitalization, diluting existing holders rather than new investors—a common negotiation point) and is administered through an equity incentive plan approved by the board. Option pool sizing is a strategic talent investment decision. Too small an option pool forces either inadequate equity grants to key hires (losing competitive talent) or frequent pool refreshes (creating dilution events that require board approval and potentially investor consent). Too large an option pool unnecessarily dilutes founders and early investors through the pre-money incorporation of shares that may never be issued. Best practice sizes the option pool based on the projected 18–24 months of hiring needs, with board and investor agreement to refresh the pool in connection with future financing rounds rather than pre-loading a large excess pool. The mechanics of option pool dilution in venture financing are often misunderstood by founders. When investors negotiate a $10M investment at $40M pre-money valuation with a "15% option pool on a post-money basis," they are effectively requiring the founders to create the option pool before the financing closes, reducing founder ownership by the option pool size before the valuation is calculated. On a $40M pre-money with a 15% post-money pool, the effective pre-option pool pre-money valuation is lower, resulting in higher investor ownership than a simple calculation suggests. Carta and similar tools can model these dynamics before founders accept term sheet provisions.
FAQs
Is the option pool created before or after a financing round?
Investors typically require the option pool to be created (or expanded to a target level) before the financing closes, making it part of the pre-money capitalization. This means the option pool dilutes existing shareholders (primarily founders) rather than new investors, even though the shares may not be granted for months or years. Founders should carefully model the effective dilution impact of option pool expansion as part of evaluating financing term sheets.
What happens to ungranted options in the pool when a company is sold?
Ungranted options in the pool (shares reserved but not yet allocated to employees) are typically cancelled at close of an acquisition. They do not result in additional proceeds to any party. This is actually advantageous for selling shareholders: ungranted pool shares are included in the fully diluted share count for ownership percentage calculations, so their cancellation at close effectively increases the per-share value of the outstanding shares. Sophisticated sellers present the cap table to buyers on an 'as exercised' basis that excludes ungranted pool shares.
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