Investors & landlords

The new company is CEG. My broker sent me a noncovered amount for the transaction sale as a gain, but they have the original basis of my EXC stock incorrect. CEG offered one share for every 3 of EXC. The DRIP plan increases the basis of the original stock of EXC and I know the dividend amounts  per share back to the time when I opened the account in 2004. Spinoffs seem to require some special calculations.