  We performed electron energy-loss spectroscopy studies in transmission in
order to obtain insight into the electronic properties of potassium
intercalated coronene, a recently discovered superconductor with a rather high
transition temperature of about 15\,K. A comparison of the loss function of
undoped and potassium intercalated coronene shows the appearance of several new
peaks in the optical gap upon potassium addition. Furthermore, our core level
excitation data clearly signal filling of the conduction bands with electrons.
