UNLESS you sold the stock on the same day as you exercised the options it's unlikely that your proceeds and basis, (and I'm talking about how you report the trade on your income tax return, not how the broker reports the trade), would be the same. The amount you paid for the exercise of the stock plus the compensation resulting from the exercise are your basis for all the stock received. Since the compensation is calculated as: FMV of stock at exercise minus the amount you paid to exercise, you can see that only if the sale date and the exercise date are the same is it likely that proceeds = basis.
Even if you had a same day sale it's certainly possible that the broker reported a basis that amount to only what you paid for the stock, in which case you'd have to report a basis figure different than the broker reported.
