VCs model dilution from employee option refresh programs by treating refresh grants as predictable future issuances that change both share counts and economic outcomes. Evidence on ownership dynamics from Noam Wasserman Harvard Business School emphasizes that founders and investors must quantify how incremental grants alter control and incentives. In practice this means building scenarios that convert hiring plans into shares and folding those shares into cap table projections.
Modeling framework
Start with a baseline cap table and simulate scheduled refreshes as reserved pools or as new share issuances. Distinguish pre-money vs post-money allocation because whether a refresh is carved out of an existing option pool or created anew affects who bears dilution. Use grant timing, vesting cliffs, typical grant sizes by role, and projected future financings to estimate cumulative share issuance. Apply valuation scenarios to translate share issuance into economic vs ownership dilution outcomes. Paul Gompers Harvard Business School and Josh Lerner Harvard Business School describe the importance of scenario analysis and expected returns when valuing venture investments, which supports using multiple valuation paths rather than a single forecast.
Incentives, signaling, and consequences
Modeling should include behavioral and territorial nuance. Refresh programs influence retention and recruitment, and different startup ecosystems treat refresh frequency and sizes as cultural norms. Noam Wasserman Harvard Business School documents how incentive misalignment can hasten departures, increasing the true cost of dilution. Technically, track both dilution in percentage ownership and the economic effect after strike prices, which affect payoff but not share counts. Use Monte Carlo or sensitivity analysis for exit valuations and waterfall waterfalls to see how refresh-driven dilution changes investor IRR and founder stakes. Steven N. Kaplan University of Chicago Booth School of Business has shown the value of rigorous outcome distributions in private company valuation, reinforcing stochastic approaches.
Practical best practices are to budget a rolling refresh reserve, model refreshes as explicit future issuances in the cap table, stress-test multiple financing and exit scenarios, and document regional tax and legal effects that change grant attractiveness. Aligning option pool refresh policy with growth plans preserves incentive alignment while making dilution transparent to current and future investors. Nuanced cultural norms and local tax rules will materially alter optimal refresh frequency and structure.