Collocations for signatory - noun

first, original
authorized (BrE)
The document must be signed by an authorized signatory of the company.

list
The public letter and list of signatories can be read here.

require
The Convention requires signatories to punish genocide when it occurs.

agree sth
Signatories agreed to support the nuclear test ban.

include
The signatories included Spain, Italy and Portugal.

country, nation, state

signatory of, signatory to
the signatories to the treaty