X0306 4 2020-07-24 0 0001012019 RUSH ENTERPRISES INC \TX\ RUSH 0001392503 Keller Steven L 555 IH 35 SOUTH, SUITE 500 NEW BRAUNFELS TX 78130 0 1 0 0 CFO & Treasurer Class A Common Stock 2020-07-24 4 M 0 20000 18.74 A 57259.4896 D Class A Common Stock 2020-07-24 4 S 0 20000 48.6237 D 37259.4896 D Option (right to buy) 18.74 2020-07-24 4 M 0 20000 0 D 2021-03-15 Class A Common Stock 20000 0 D Includes 301 shares acquired on July 1, 2020, under the Rush Enterprises, Inc. Employee Stock Purchase Plan. Includes certain shares included in the Rush Enterprises, Inc. Deferred Compensation Plan. This price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $48.0850 to $49.38. The reporting person undertakes to provide Rush Enterprises, Inc., any security holder of Rush Enterprises, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Options may be exercised in increments of 1/3 on each anniversary of the grant date beginning on the third anniversary of the grant date. The grant date is ten years prior to the expiration date. Steven L. Keller 2020-07-28