Yes, free stuff as a reward for doing something is taxable "other income." You should report the income using the fair market value of the stock on the date it was awarded.
Keep records, because the amount you declare as taxable income becomes the basis of your stock and determines future taxable income. For example, if you sell the stock for $50, you have a $10 taxable gain (difference between basis and selling price). The entire $50 proceeds are not taxable when you sell, just the gain.
