X0306 4 2014-03-31 0 0001109189 BASIC ENERGY SERVICES INC BAS 0001355893 Patterson Thomas Monroe 801 CHERRY STREET SUITE 2100 FORT WORTH TX 76102 1 1 0 0 President and CEO Common Stock 2014-03-31 4 S 0 3000 27.4047 D 307621 D Common Stock 2014-04-01 4 S 0 2000 27.49 D 305621 D Reflects the weighted average sales price for the common stock. These shares were sold in multiple transactions at prices ranging from $27.38 to $27.435, inclusive. The reporting person will provide upon request by the SEC staff, the issuer or any security holder of the issuer, full information regarding the number of shares sold at each separate price. The sales reported in this Form 4 were effected pursuant to a 10b5-1 trading plan entered into by the reporting person on February 24, 2014. /s/ John Cody Bissett, Attorney-in-Fact 2014-04-01