Single Trigger Acceleration
Definition
An acceleration provision that requires only one event — typically a change of control (acquisition) — to trigger immediate vesting of all unvested equity. Single trigger is more favorable to the employee than double trigger because you get full vesting regardless of whether you stay at the new company.
Real-World Example
You have 40,000 unvested options with single-trigger acceleration. The company is acquired. All 40,000 options vest immediately, regardless of whether you continue working at the acquirer. You can exercise and cash out your full equity.
Common Mistake
Expecting single-trigger acceleration to be standard. It is rare and usually reserved for executives. Acquirers dislike single-trigger because it removes the incentive for key employees to stay post-acquisition. If you negotiate for single-trigger, be prepared for pushback.
Why It Matters
Single-trigger is the gold standard of acceleration protection. If you have negotiating leverage (especially at the executive level), asking for single-trigger can be the most valuable term in your entire equity package.
Related Terms
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