If you are allowed to cash in your 401 (k), which is not necessarily possible unless you have reached the age of 59 1/2, you will have to sell the stock to get cash. You could do that at any time. If you are planning to put the money into an IRA to avoid the taxes (just guessing), you probably will have to get rid of the present holdings and just transfer cash.

I'm not 59 but no longer employed with company going to do a total distribution have 401k,some of which is company stock,and part is retirement 2035

A 401 k is a retirement account. The company that forms it for its employees usually does not hold the account but rather has another company handle the trustee obligations. The money is all retirement, even if part is in stocks and part in cash, and part in mutual funds or other kinds of funds. There are penalties (10%) for cashing in early, plus the money is treated as income for tax purposes. You could leave the money where it is, you could roll it over into another retirement account, such as an IRA or Roth IRA, or you could just cash it in, with the penalties/tax consequences noted. You could always sell the stock within the account at any time.