A startup guide citing Y Combinator's standard: co-founders should split equity near-equally, but with 4-year vesting and a 1-year cliff. A founder who leaves before 1 year gets no shares; after that, 25% vests and the rest vests monthly over 4 years. The point is to stop an early departure from leaving "dead equity" that scares off investors. Mainly relevant if you are setting up a company with partners; it is a general principle, not Thai legal or tax advice.