Meaning
Contractual provision that maintains the ownership percentage of a preferred shareholder when subsequent equity rounds occur at a lower share price. This anti-dilution clause increases the total number of shares held by the investor via a modification of conversion prices. It defines the point at which new capital entering a company triggers a revaluation of existing stakes.
The instrument governs specifically those events where cash is exchanged for stock at values below the initial investment mark.
Conversion Adjustment
Share ratios transform based on specific mathematical formulas written into the shareholder agreement. By including an anti-dilution clause parties ensure that the downside risk of future fundraising is distributed according to agreed priorities. Founders typically accept these terms to secure early funding despite the threat of future loss of control.
The mechanism engages immediately upon the legal closing of the secondary round.
Broad Formula
Weighted averages account for the total amount of capital already inside the entity rather than focusing only on the single new transaction. When an anti-dilution clause utilizes this broad approach it creates a more gradual adjustment that balances the interests of founders and investors. This method prevents tiny share sales from causing massive shifts in the cap table.
A reader looking at the calculation sees a fraction that multiplies original conversion prices by a weighted factor of current versus new issuance volumes. Smaller startups often adopt this path to preserve some founder equity during difficult transitions.
Structural Expiry
Termination of these specific rights occurs upon a qualified public offering or once a predefined internal return target is reached. Even though the anti-dilution clause seems permanent it frequently yields to the standardisation requirements of a stock exchange listing. Once converted into common stock the right disappears forever.
This ensures that a single class of equity exists for the market at large.