Meaning
Protection mechanism that lowers the conversion price of preferred stock to mitigate the impact of a down round. The weighted average anti-dilution formula considers both the lower price of the new shares and the total number of shares issued. This approach is more favorable than a full-ratchet provision.
Mathematical Rebalancing
Formulas adjust the price at which preferred shares convert into common stock based on the relative size of the new investment. Under weighted average anti-dilution, the price drop is moderated by the existing capital structure. This calculation prevents a minor funding round from causing a massive shift in ownership percentages.
Founder Burden
Issuing new shares at a discount increases the number of shares given to previous investors. Because weighted average anti-dilution protects the value for the capital providers, the common shareholders take the full hit to their ownership percentage. This dynamic places a high emotional and financial cost on the founder who must explain the loss to the early team.
Funding Pressure
Negotiating a new round becomes harder when existing investors hold these protection rights. The presence of weighted average anti-dilution clauses can deter new participants who do not want to see their investment diluted by the adjustments given to old tiers of stock. Managing these competing interests requires dozens of hours of legal consultation and stakeholder management.
This complexity is one of the primary challenges of a distressed financing event.