Meaning
A vesting acceleration provision in an equity agreement that allows an employee or founder’s shares to vest immediately upon a single corporate event, such as an acquisition. Startups utilize a single trigger structure to protect key early contributors from being sidelined without compensation after a change of control. This clause provides instant liquidity or ownership of shares when the company is purchased.
Acceleration Event
The occurrence of the buyout or merger acts as the sole required condition to release the unvested stock. Founders do not need to be terminated or demoted to receive this benefit; the transaction itself completes the vesting schedule. This gives early-stage executives a strong incentive to work toward a successful acquisition.
Acquisition Protection
Securing this clause protects the equity of early team members who have worked hard to build the corporate asset. When a single trigger clause is executed during a transaction, it guarantees that those who built the company can realize their financial returns immediately. This avoids situations where a purchasing entity tries to force out founders to reclaim their unvested shares.
It aligns the financial interests of the early builders with those of the buyers by providing a clean exit with full compensation for the value they created.
Founder Right
Incorporating this protection is a point of negotiation with early-stage investors, who often prefer double-trigger arrangements to ensure leadership continuity. Founders must advocate for this clause if they want to ensure they are not left with worthless options after a rapid transition. It establishes a strong baseline of security for the team, allowing them to focus on scaling the business to a sale.
Consequently, the venture maintains high internal alignment and a clear, unified focus on exit opportunities.