Ok, so this one is a little painful, but here goes.
I work for a BMW dealership, this dealership was just sold to a new company who changed the name to lets say Beach Town BMW. Now lets jump back to march of 2015. The original owners didn't have a plan to sell the business at this point, but due to BMW franchise rules they were going to have to change the name away from the family name to a generic "town name" BMW. The GM, who was the typical entitled son of the owner came to me and said "does anybody own beachtownBMW.com?" I looked into it and nobody owned that name so he throws a company card at me and says "buy it". When I got to the registration part I went back to him and said "who do you want me to register this to?" he responded "just put it in your name for now".
So that's what I did and I never thought about it again, until today, when I got an e-mail from some random person asking me if I was the owner and how much money I wanted for the domain names. I confirmed that I owned the name and several variations of it and asked if they wanted those too. He responded that they did want the variations and asked me how much I wanted for them. I wasn't sure if it was someone from the new parent company because they never identified themselves as "with the company" and my name is on the register and I have an email address with the former companies prefix in it, so I figured someone would have said something to me about getting the names moved to the new server. Now that money was involved, and my ownership was kind of a gray area, I decided to take it to my supervisor and see what he thought about it. After I gave him the rundown he asked if I minded if he brought the new GM up to speed on the situation. I said sure.
A few minutes later my supervisor and the new GM called me into the GMs office and he asked me "so how much do you want for the domains?". I said "Well they are technically registered to me, but I didn't pay for them and I have no use for them, so I think they kind of already belong to you. If you want to kick a few buck my way I'm not going to say no, but I don't want anything for them. I just wanted to make sure I wasn't going to transfer them to someone who wants to gouge you on the price". He thanked me, confirmed that the person who was trying to buy them was from one of our companies, and gave me the ok to release them to him. I said "I'll get right on it".
Here's where the gut punch came in. As I'm getting up to leave he says "That's a relief, I thought we were going to have to give you like $10k for them". I jokingly responded "And now you're getting them for the bargain price of just 5". We had a laugh and I went about my business. $10k is an insane amount of money to me and if I were a dubious business person it could have been mine, but I always try to be honest. The way I am looking at it is, $10k is a lot of money but I'm going to make 4 times that much as an employee in the next 12 months and they probably wouldn't want to keep me on as an employee if I had just cost them $10k on a technicality. So, really I just saved them thousands of dollars and I think that's a much better first impression to make.
TL;DR - I could have made a shady $10k off my new employer but decided to be honest and earn some loyalty points instead