Caveat: At least in the US and ASFAIK :- As long as the company provided you with the properly assessed strike-price and FMV for your options at the time of ex

Caveat: At least in the US and ASFAIK :- As long as the company provided you with the properly assessed strike-price and FMV for your options at the time of exercise (upon which they become shares) I don't think the founders are obligated by law or otherwise to disclose any investments to their employees. Even though you may be a founding engineer, officially you are still an employee. You are not on the board of directors and/or until the time of exercising options you were not a shareholder. Hence the company likely has no obligation to provide you with the details of the company's financials. On the other hand if you exercised your options based on incorrect FMV the company provided then the additional tax burden would not be your fault but I am not sure in your situation what recourse you have. As others may have suggested your lawyer should be able to answer that.