You seem to have three events:

The -NEC seems to be the income that would have been late wages, not distributed as cash, because it represents taxable Value for the Stock granted/vested.

The stock is an asset with that basis (and FMV to the widow). Purchase date would be vesting, not grant, if that is different. That's assuming no one filed to elect grant date as basis date.

And the -Misc might be fractional sales and/or short term sales.

I have made a bit of assumptions. The broker might have some info.