Time to use ur brains…the one who solves this

Time to use ur brains…the one who solves this
is a real brainy.
A man got killed in his office. The suspects
are Edison, Maxis, Jason, Jenny, Sofia,
Patrick.
A calendar found near the man has blood,
written 6, 4, 9, 10, 11.
Who is the killer?
Solve this with reason??