undersigned

/AH1 N D ER0 S AY0 N D/
noun
  1. 1

    The person or those people, mentioned in a document, whose names and signatures appear at the end

adjective
  1. 1

    (of a document) having signatures at the end or bottom

  2. 2

    (of a person) having signed at the end of a document

Source: https://en.wiktionary.org/wiki/undersigned