Get a lawyer to look at your past agreements. As others have mentioned, there should be nothing adversarial about hiring a lawyer to look at your agreeements a

Get a lawyer to look at your past agreements. As others have mentioned, there should be nothing adversarial about hiring a lawyer to look at your agreeements and advise you of your rights and obligations. You need a lawyer to tell you when you can exercise stock. Don't get legal advice from a forum. When you know your legal situation, keep an open mind about what is best for you rather than what is "fair". If investors want to dilute you more than other founders, going along with the investors may ultimately be the most lucrative option for you.