I started at this corporate in Liechtenstein, fresh off my MBA. But, realized a year in, that I would not be a good culture fit. Let my manager know, beginning

I started at this corporate in Liechtenstein, fresh off my MBA. But, realized a year in, that I would not be a good culture fit. Let my manager know, beginning of the 2nd year that I would like to transition out and my reasons for leaving. One thing the manager made me clarify is that if I was going to be working for competition. In that case, he felt it wouldn't be wise to have an extended transition. (I was not and considering starting my own startup) He let me keep my sign on bonus (clue: enough to buy a model-3 Tesla) that I was supposed to pay back if I left before end of 3 years and I agreed to stay until end of 2nd year so that we could have a smooth transition and handover. The departure was only announced to the wider team, 2 months prior to actual departure. Allowed the company to have a non-disruptive transition, know exactly why someone was leaving (not some bulls*t reasons) and me to validate and get started on my company right after I left. Of course, I had a going away party and the good folks even pooled some Swiss francs to put towards my startup too :-).