If this stock was not held in a qualified retirement account and the Form 1099 you received is a 1099-B, not a 1099-R, the stock received a step up in basis to the date-of-death value which would be used to determine how much taxable income passes through to each beneficiary. If the taxable income to the estate during the estate's tax year is less than $600, no filing is required. Still, if there is a loss it might be beneficial to the beneficiaries to file and pass the loss through to beneficiaries to be used on their individual tax returns.
If this was a distribution from a retirement account and you received a Form 1099-R, the total taxable amount that needs to be passed through to beneficiaries is usually the amount shown in box 2a of this form.
TurboTax Business (not Home & Business) is available for preparing Form 1041.
