I am starting to get very uncomfortable

[RhiChiChi]

I would tell him upfront first that you don't like it and it has to stop, give him a clear message that it's unacceptable and the chance to remedy his own behaviour before reporting it. He should know better, but some people seriously just don't!
If he continues to bother you after being made aware that you are uncomfortable then I think you have grounds to complain right away.

Totally agree. It is inappropriate and needs to be addressed before it escalates

[beansbeans!]

Agree with Maybebaby, but if you are not comfortable with confrontation, why not get the other two women he does this too and confront him together? And if he doesnt take you all serious then yes its time to make an official complaint.

But yeah what a creep