My form 1099B shows that we sold 117 shares of stock in two sales on the same day (28 shares and 89 shares). From the trade confirmation sheets, these shares were actually from 5 different buys. Since I have the sheets, I can figure the cost basis for each of the 5 purchases. Can I enter the total proceeds and the total cost basis or do I have to find a way to list these separately? Also, do I need to send any extra documentation to the IRS to prove how I derived the cost basis?
