How to Create Specific Webpage/Directory That Does Not Appear In Search Engines (no SEO)?

I have specific webpages that are private, but don't require pword security. I would like to create specific webpages that are only accessible through a direct URL. There will be no links to these pages in my website. Basically, I want to be able to point someone through a direct link in an email to mywebsite.com/Company1Proposal.html or mywebsite.com/Company2Proposal.html, etc. The kicker is I don't want these pages to appear in any search engine results. Is there a way to block all search engines from searching a specific webpage and/or a specific directory?