Reverse stalking.

Locate the company principles + determine what events they attend - Meetups + Conferences.

Then book yourself as a speaker + craft your talk to target topics which will turn them on.

This technique can be a long game or short game.

I've connected with some principles first time I spoke.

Other times, I've spoken for several years, till I made a connection.

I call this Reverse Stalking, because you put yourself in front of your target clients + they come to you.

Another similar trick is to ask your target clients to speak at your events or interview them.