X0306 4 2022-02-15 0 0001393612 Discover Financial Services DFS 0001610732 Greene John 2500 LAKE COOK ROAD RIVERWOODS IL 60015 0 1 0 0 EVP, Chief Financial Officer Common Stock 2022-02-15 4 S 0 4443 127.946 D 26613 D Reflects weighted average sale price for open-market sales transaction reported herein. Actual sales prices ranged from $127.900 to $128.116. The reporting person provided to the issuer, and will provide any security holder of Discover Financial Services or member of the SEC staff, full information regarding the number of shares sold at each separate price upon request /s/ D. Christopher Greene as Attorney-In-Fact for John Greene 2022-02-17