1 EXHIBIT 11.1 STATEMENT RE: COMPUTATION OF EARNINGS PER SHARE USA TRUCK, INC. - -------------------------------------------------------------------------------- Three Months Ended March 31, --------------------------------- 1999 1998 ------------ ------------ Numerator: Net income and comprehensive income................... $ 2,324,117 $ 2,337,717 ============ ============ Denominator: Denominator for basic earnings per share - weighted average shares..................... 9,392,817 9,399,731 Effect of dilutive securities:- Employee stock options................................ 59,664 78,431 ------------ ------------ Denominator for diluted earnings per share - adjusted weighted average shares and assumed conversions........................ 9,452,481 9,478,162 ============ ============ Basic earnings per share $ 0.25 $ 0.25 ============ ============ Diluted earnings per share $ 0.25 $ 0.25 ============ ============