The NUA reported on the 1099-R is informational only ... what did you do with the stock? Sell or roll ?
Did you roll it to a regular broker account ? Or an IRA?
https://www.kiplinger.com/article/taxes/t054-c032-s014-nua-is-a-well-kept-secret-with-big-tax-benefi...
What does the 1099-R look like ? What code is in box 7? Is the taxable amount in box 2a the same as box 1 & 6 ? Did you get a lump sum ?
1099-R instructions:
Box 6. If you received a lump-sum distribution from a qualified plan
that includes securities of the employer’s company, the net unrealized
appreciation (NUA) (any increase in value of such securities while in
the trust) is taxed only when you sell the securities unless you choose
to include it in your gross income this year. See Pub. 575 and
Form 4972. If you roll over the distribution to a designated Roth
account in the same plan or to a Roth IRA, see the instructions for box
2a. For a direct rollover to a designated Roth account in the same plan
or to a Roth IRA, the NUA is included in box 2a. If you didn’t receive a
lump-sum distribution, the amount shown is the NUA attributable to
employee contributions, which isn’t taxed until you sell the securities.
