I'm considering investing in a restaurant which is scheduled to open next July.
Could I demand a bigger share of the stock because I'm the first investor?
Depends on your renegotiating capabilities.
You can demand anything, whether you're going to get it or not has to do with other investors, how tight they are, and of course how much money you bring in.
You should be aware that restaurants have one of the very highest failure rates of any business.
I agree with HesNotHere but is a matter of luck and investing is very risky. Well good luck for that, it depends on how good you are in talking them about bigger share and stock.
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Other people asked questions on various topics, and are still waiting for answer. Would be great if you can take a sec and answer them