Post-Termination Exercise Period

What Is a Post-Termination Exercise Period?

The post-termination exercise period (PTEP) is the amount of time you have after leaving a company to exercise your vested stock options. Once this window closes, any unexercised vested options are forfeited — permanently. The PTEP is one of the most consequential and often overlooked terms in a stock option agreement. For many startup employees, a short PTEP can force a difficult financial decision at exactly the wrong time: right when they are between jobs.

Standard Terms

The 90-Day Default

The most common PTEP for stock options is 90 days after your last day of employment. This means you have roughly three months to come up with the cash to exercise your options and pay the associated taxes, or you lose them entirely. For employees with large grants or significant spreads, this can require tens or even hundreds of thousands of dollars on short notice.

Variations

Some companies have moved toward more employee-friendly terms:

• Extended PTEPs — Companies like Pinterest, Coinbase, and others have offered PTEPs of 7 to 10 years after departure. This gives former employees ample time to decide when and whether to exercise.
• ISO limitations — Even if a company offers an extended PTEP, ISOs must be exercised within 90 days of departure to retain their ISO tax treatment. After 90 days, they automatically convert to NSOs. This is a statutory requirement under the tax code, not a company policy.
• Cause-based termination — Some agreements shorten or eliminate the PTEP if the employee is terminated for cause.

Practical Implications for Startup Employees

The 90-Day Pressure Cooker

A 90-day PTEP creates enormous pressure. When you leave a company — whether voluntarily or involuntarily — you must quickly assess:

1. The total exercise cost — Exercise price multiplied by the number of vested shares.
2. The tax liability — For NSOs, income tax withholding on the bargain element. For ISOs, potential AMT exposure.
3. The company's prospects — Is the equity likely to be worth the cost, or are you throwing good money after bad?
4. Your personal finances — Do you have the cash available, and can you afford the risk?

Making this decision under time pressure, often while managing a job transition, is one of the most stressful aspects of startup equity compensation.

Why PTEPs Should Be a Negotiation Priority

When evaluating a job offer, the PTEP is one of the most important equity terms to review — and one of the most frequently ignored. An extended PTEP dramatically changes the risk profile of your equity. With a 10-year PTEP, you can wait for a liquidity event before deciding to exercise, avoiding the need to write a large check for illiquid shares. With a 90-day PTEP, you are forced to make a high-stakes bet with limited information and limited time.

Strategies for Managing a Short PTEP

• Exercise while employed — If you anticipate leaving, consider exercising some or all of your vested options before you give notice, when there is no time pressure.
• Plan your departure — If possible, time your departure to coincide with a period when you have the financial resources to exercise.
• Explore financing options — Some companies and third-party lenders offer non-recourse financing to help former employees exercise their options.
• Negotiate during hiring — Push for an extended PTEP as part of your initial offer negotiation.

How It Relates to Exercising Stock Options

The PTEP defines the outer boundary of your exercise decision timeline. If you are still employed, you have time to plan. Once you leave, the clock starts ticking. Understanding your PTEP and planning for it in advance is essential. The worst outcome is losing valuable options simply because you ran out of time — not because the investment was bad, but because the window closed before you could act.