Zack received a gift of stock from his uncle on June 20 of the current year. Zack's uncle had a basis in the stock of $4,000, but the fair market value of the stock on June 20 was only $1,500. Zack held the stock for three months and then sold it for $1,200. What basis in the stock will Zack use to determine his gain or loss on the sale of the stock?