Meaning
Contractual provisions in investment agreements preserve an investor percentage ownership when subsequent equity issuances occur at prices below prior rounds. An anti dilution clause achieves this protection by altering the conversion price of convertible preferred stock into common stock during down rounds. The provision sets bounds on ownership erosion, operating strictly within pricing thresholds defined at investment execution.
Conversion Adjustment
Mathematical formulas govern how preferred shares convert into common equity when lower-priced stock enters the capitalization table. Broad-based weighted average calculations adjust the conversion rate based on relative transaction volume, whereas full ratchet mechanisms reset the price entirely to match the new issue. An anti dilution clause executing through full ratchet mechanics creates sharp equity shifts even on minor share issues.
The mechanical recalculation increases total common share claims, altering voting proportions across board votes and corporate approvals.
Downround Consequence
Downside financing triggers immediate ownership recalibration across earlier shareholder tiers. When market valuations fall, the presence of an anti dilution clause forces additional share allocation toward protected investors without requiring new cash contributions. Common shareholders absorb the expanded share count, facing diminished economic percentage holdings.
Unprotected equity holders bear the entire burden of structural price corrections.
Founder Impact
Executive operational focus shifts when cap table recalculations dilute founder equity below control thresholds. A founder operating under an active anti dilution clause faces immediate reduction in governance influence alongside proportional economic exposure. The anti dilution clause shifts economic repricing risks away from investors and onto operational founders.
