Meaning
Executive compensation agreements often include provisions that modify the delivery of equity based on specific corporate milestones. Single trigger vesting acceleration causes unvested shares or options to vest immediately upon the occurrence of a single corporate event, usually a change of control. This provides immediate liquidity to the holder regardless of whether they continue working for the acquiring company.
Control Change
The definition of a qualifying event typically involves a merger, an acquisition or the sale of substantially all corporate assets. Under single trigger vesting acceleration, the closing of the deal acts as the final step for the equity to become fully owned. This mechanism protects early employees from losing their stakes if an acquirer decides to terminate the team after the purchase.
Liquidity Speed
Holders receive the full value of their grants at the same time and price as the founders and investors. While single trigger vesting acceleration is favorable for the individual, it can reduce the attractiveness of the company to potential buyers who want to retain the talent. Most acquirers prefer that employees remain incentivized to stay through a transition period.
Shareholder Cost
Investors often view these clauses with caution because they increase the overall cost of an exit. When single trigger vesting acceleration is widely applied, the total payout to the management team can significantly dilute the proceeds available to the preferred stockholders. For this reason, these provisions are more common in early stage founder agreements than in broad based employee option plans.
Negotiating the balance between founder security and buyer retention requirements is a standard part of late stage financing rounds.