I would not do it either, it may screw up a business deal . Let him put out what he wants us to know . The last thing he needs is a monkey wrench threw into the mix . Imo
No it would not hurt the company if you found it openly on the interwebs. Just because you can't go back and view the link doesn't mean it does not exist on a time machine archiving database.
You finding the information means it is already out there. I'm very interested in reading that lol.