Every good pitch will come to an end at some point. We hope that at this point, you have convinced the investor to take action, open his pocket, and invest in your venture (... would be fantastic if it were that easy).
The last thing your audience will see is the contact slide. Make sure it will have a lasting impression. Our best practice is to add a clear call to action (e.g., Join the mission to change the future of education.) Furthermore, you should add your contact information (name + email address + phone number) a link to your website and any social media, so that they can check it out very quickly.
You want to make the investor take action after your contact slide!