How to Find the Average Price of Common Stock

Determine the purchase prices for the common stock and the quantity of stock purchased at particular prices. For example, assume you purchased 1,000 shares of stock in Company A at $5 per share, 1,500 shares at $4 per share and 2,500 shares at $10 per share.
Multiply the purchase prices by the quantity purchased and add. Continuing the example, (1,000 x $5) + (1,500 x $4) + (2,500 x $10) = $5,000 + $6,000 + $25,000 = $36,000
Add the total number of shares purchased. Continuing the example, 1,000 + 1,500 + 2,500 = 5,000 shares.
Divide the total cost of the shares by the total number of shares: $36,000/5,000 = $7.20. This is the average price of the common stock.

How to Report Non

Examine Box 1 of your Form W-2. It should be a higher amount than your annual salary. The increase is your income from exercising the stock options. Your employer will provide details on the amount in Box 1 to ensure that it includes salary, plus the difference between the option exercise price and the value of stock purchased on the exercise date.
Enter on Line 7 of Form 1040 the amount from Box 1 of your W-2. Include W-2 income from other employers, including the W-2 of a spouse if you file a joint tax return. Add the income from exercising the stock options if that amount is not already on your W-2.
Record the option exercise date in the first column of the ledger.
Write the market value of the stock on the option exercise date in the next ledger column. Label the column 'cost basis.'
Keep the ledger as a record of your purchase date and cost basis. Use this to determine taxable gain or loss when the stock is sold.