I had a 457b retirement plan and withdrew all of the funds. Where do I report that? Do I need to have a 1099r or will my W-2 suffice?

I didn't receive a 1099r form, but I don't know if I should be receiving one or not. When I made the withdrawal from my 457b, they withheld 20% for federal taxes, and 5% for state. On my W-2, box 12 states "G 1450.09." Do I need to report this anywhere besides where I input my W-2 information?