If this was in 2016, then they were required by law to issue you a 1099-R by Jan 31, 2017 to report it. You should contact the payer of the distribution for a copy of the form. That is taxable income and must be on your tax return, but you need the 1099-R to report it.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
