Double-trigger acceleration: protect your unvested equity

What is double-trigger acceleration?

It lets an agreed portion of unvested equity vest early when both contract-defined events happen. Typically, the company is acquired and you are then dismissed without cause or resign for a defined good reason within a protection window. A sale alone usually does not satisfy both triggers; neither does an ordinary resignation.

Your answer should be in the award documents, not just a recruiter’s assurance. Compare the protection alongside cash compensation in the startup offer analyzer, and ask the employer to confirm any missing definitions in writing.

Single trigger vs double trigger

Single-trigger acceleration speeds up vesting after one specified event, often a change of control. Double-trigger acceleration requires both a defined transaction and a qualifying termination within the contract’s protection window.

A qualifying termination commonly includes dismissal without “cause” and may include resignation for “good reason.” These are contract definitions, not everyday meanings. A smaller job title, changed location or reduced compensation only qualifies if the agreement says so and you meet any notice and cure requirements.

A worked vesting example

Assume a grant of 20,000 options is 50% vested at acquisition. You have 10,000 vested and 10,000 unvested options. Under a clause accelerating 50% of the unvested award, a qualifying termination would accelerate 5,000 options—not 50% of the entire original grant.

This assumes the award survives the deal and the clause applies. Accelerated options still require exercise under their terms. Vesting does not eliminate the exercise price, taxes, investor preferences or sale restrictions.

What happens if the buyer cancels or replaces the grant?

Acquisition treatment can include assumption, substitution, cash-out or cancellation, depending on the plan, transaction and award value. A double-trigger clause may not protect you in every structure if the award is not assumed or substituted.

Ask how protection works when awards are cancelled, when the buyer imposes a replacement schedule, and when the second event happens near closing. Your agreement needs to address the actual transaction—not just use the phrase “double trigger.”

Does “double-trigger RSU” mean the same thing?

Not necessarily. A private-company RSU may use service and a liquidity event as two conditions for vesting or settlement. That is different from acceleration after a change of control and a qualifying termination. The word “double” alone does not tell you which protection you have.

Ask: “Are these conditions for earning or receiving my RSUs, or do they accelerate vesting if I lose my job after an acquisition?” Then check the exact agreement. The RSU vs ISO guide explains how ownership, exercise and settlement differ.

The terms to negotiate before signing

• Acceleration amount: all or a stated portion of the unvested award; specify the denominator.
• Change of control: which stock sales, mergers or asset sales qualify, and which do not.
• Termination: clear “cause” and “good reason” definitions, including material pay or responsibility reductions if agreed.
• Protection window: an agreed period before and/or after closing rather than an undefined “following the sale.”
• Notice and cure: the deadline to notify the employer and its chance to remedy a good-reason event.
• Award treatment: what happens if the buyer does not assume or substitute your equity.
• Exercise and settlement: how quickly options must be exercised or RSUs settled after termination.

A salary-and-equity negotiation script

“I’m excited to join and build long-term value. Could my grant include acceleration of all unvested equity if a change of control is followed by termination without cause or resignation for defined good reason within an agreed protection window? Please also explain what happens if my award is not assumed by the buyer.”

This is a starting question, not contract language. If full acceleration is not available, discuss a partial amount, severance or a cash retention commitment with a qualified adviser.

Does acceleration guarantee acquisition proceeds?

No. It changes vesting, not the price a buyer pays or the priority of shareholders. Underwater options or common shares behind a large preference stack may receive nothing. Keep acquisition upside separate from the salary and bonus that fund your near-term needs.

How do I check whether my clause is useful?

Ask the employer to walk through these scenarios using your actual award agreement. The answers should identify the applicable clauses, not promise an outcome that the documents do not support.

• You stay after the sale: does the original vesting schedule continue, and who is responsible for the award?
• You are laid off after closing: does the termination fall inside the protection window, how much accelerates, and when must you exercise or receive settlement?
• Your pay or responsibilities are materially reduced: does the good-reason definition cover that change, and what notice and cure deadlines must you meet?
• The buyer does not assume the award: is there separate protection at closing, or could the grant disappear before a second trigger can occur?

If any answer is unclear, ask an employment lawyer to review the plan and agreement together before signing. Better vesting protection cannot substitute for understanding the share class and liquidation preference stack.