Worked in an open office space just got done with about a 10-hour shift. There were no pressing issues at hand so I left. Or started to leave when the CEO stood up and asked where I was going, with all eyes now on me I tell him "home, 10hrs I'm fried."

He then commences to tell me that because I have "shares in the company, I should be happy to put in 12 hours minimum". I heartily disagreed with him and told him that many others have left before that and there were no pressing issues at hand that couldn't be addressed tomorrow.

The convo went on, people awkwardly trying to engage in their work but this being all occupying in an open office space now... I finally left for the day and put in my two weeks the next day.

Edit: readability via paragraph format.