Green’s Dictionary of Slang

(US) the Central Intelligence Agency (CIA), thus attrib.

1967		R. Starnes Requiem in Utopia 4: In common with everyone in the first generation of the Central Intelligence Agency, the station chief invariably alluded to the agency as ‘the company’.
1976		East Side Express (N.Y.) 13 May 🌐 The involvement of the CIA in the Nixon Watergate went far beyond the fact that the burglars were ‘Company’ alumni.
2002		R. Littell [title] The Company: A Novel of the CIA.
2024		J. Meades Empty Wigs (t/s) 395: He was appointed a senior manager of the American Committee for Cultural Freedom (Europe) - a Company post rather than a diplomatic on.