Yes, there can be limits in the contract, making it not possible to sell for less than X in the next Y years. So if you want to do that, you then need to convince your investors this is the best deal they will get.
Also, the investor also often have liquidity preferences. So if they invested at a valuation at $100, and you want to sell at $50, they might get all their money back before previous investors and yourself get a single cent. Then it might not be worth it for you to sell at all.
Also, the investor also often have liquidity preferences. So if they invested at a valuation at $100, and you want to sell at $50, they might get all their money back before previous investors and yourself get a single cent. Then it might not be worth it for you to sell at all.