Some stock I owned for a long time was sold in an acquisition. I had to send in paperwork and received the check in 2019. I now realize that the 1099-B has the sale as occurring in Nov. 2018 and for tax year 2018. I did not report this on my 2018 taxes since I did not receive the payout until 2019.
Do I need to file an amended 2018 return? Is is permitted to file this with 2019 taxes since that is when I received the money? Thank you for any insight you can provide.