Winkler, a CPA, provided accounting services to a client, Thompson. On December 15 of the same year, Thompson gave Winkler 100 shares of Foster Corp. as compensation for services. The adjusted basis of the stock was $4,000, and its fair market value at the time of transfer was $5,000. The following year, Winkler sold the stock on February 15 for $7,500. What is the amount that Winkler should recognize as gain on the sale of stock?