Received NR4 from Canada with code 40 living in the U.S.

I received NR4 form as I worked in Canada a year ago where I contributed to my pension plan. However, since I left the company and am living in the U.S., I got NR4 with code 40 (lump sum). How should I go filing my taxes?

 

Will this be considered 1099 - R? SSA 1099? or simply a foreign income?