Meaning
Contractual provisions found in venture capital term sheets provide a price correction mechanism for previous investors during down rounds. Implementation of anti dilution ratchets ensures that the conversion price of existing preferred stock drops to match the lower valuation of the new financing. This protection limits the ownership stake erosion typically sustained when a startup issues shares at a discount to prior tiers.
Adjustment Mechanism
Mathematical operations dictate the magnitude of the share adjustment depending on the specific formula applied in the shareholders agreement. Full ratchets lower the price to the exact point of the new issuance regardless of volume, whereas weighted average alternatives incorporate the total capital raised into the new price calculation. The former allows for a substantial expansion of the investor share count during even a minor issuance of inexpensive equity.
Economic Shield
Capital structures often undergo significant rebalancing when these clauses are triggered by secondary market activity or subsequent funding cycles. Preferred shareholders benefit at the direct expense of common stockholders who bear the brunt of the dilution because they lack equivalent contractual safeguards. Founders typically see their total percentage of control diminish rapidly under the full variant of the rule.
Corporate Context
Legal documentation specifies the exclusions from these clauses such as shares issued for employee option pools or equipment financing. Negotiation centers on whether the protections cover all down round events or only those exceeding a defined monetary threshold. Clarity on these boundaries prevents administrative paralysis when small amounts of equity are issued to operational partners.