Part-time executives can also receive grants, as startup and pre-IPO companies sometimes have part-time CFOs or other senior finance, sales, or management executives (or use them as consultants). These individuals often leave well-paid positions to consult with several startups at once (hoping one takes off) and demand significant equity in the entities that employ their services.
Alert: If you switch from full-time to part-time status, you should check the effects of this on your eligibility for stock grants and the vesting on existing grants. See a related FAQ.