Exercise window
Also called: post-termination exercise period
ELI5
The time available to use an option.
Used in conversation
“A short exercise window can create a cash and tax burden.”
Definition
The period during which an option holder may exercise after an event such as termination.
Here “Exercise window” means: The period during which an option holder may exercise after an event such as termination.
Pitch context
You will see “Exercise window” in fundraising decks, data rooms, term sheets and investor conversations when the discussion reaches founder & employee equity.
Why it matters: In founder & employee equity, a loose definition can change rights, obligations, approval, disclosure or enforceability.
Caution
Meaning, enforceability and required process vary by jurisdiction and agreement; this definition is not legal advice.
Sources & evidence · 5
Direct term-level sources and supporting source families.
- National Venture Capital Association — Model Legal DocumentsDirect source · institutional · checked 2026-08-16
- U.S. Securities and Exchange Commission — Small Business Capital Formation GlossaryDirect source · primary · checked 2026-08-16
- U.S. Securities and Exchange Commission — Exempt OfferingsSupporting source family · primary · checked 2026-08-16
- Y Combinator — Safe financing documentsSupporting source family · practitioner · checked 2026-08-16
- Y Combinator — Series A Term Sheet TemplateSupporting source family · practitioner · checked 2026-08-16