Complex sentence: It is unclear how much of a role Mary had in Bill Agee's subsequent attempt to acquire the aerospace company, Martin Marietta, though she certainly was in the know as Cunningham attended meetings between the two companies during early negotiations.
Split into simpler sentences: It is unclear how much of a role Mary had in Bill Agee's subsequent attempt to acquire the aerospace company, Martin Marietta, though she certainly was in the know. Cunningham also attended meetings between the two companies during early negotiations.