According to their website [0]:

  Each employee chooses each year how much of their
  compensation they want in salary versus stock options.
  You can choose all cash, all options, or whatever
  combination suits you

And what's really freaking cool:

  There are no compensation handcuffs (vesting) 
  requiring you to stay in order to get your money.
  People are free to leave at any time, without loss of
  money, and yet they overwhelmingly choose to stay.
  We want managers to create conditions where people love
  being here, for the great work and great pay.

[0] https://jobs.netflix.com/culture