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The amount of securities reported on this Form 4 have been adjusted to reflect the stock split."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"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."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"On October 12, 2020, the Issuer effected a 3-for-2 stock split of its common stock. The amount of securities reported on this Form 4 have been adjusted to reflect the stock split."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On October 12, 2020, the Issuer effected a 3-for-2 stock split of its common stock. 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The amount of securities reported on this Form 4 have been adjusted to reflect the stock split."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $39.16 to $39.48. 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."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On October 12, 2020, the Issuer effected a 3-for-2 stock split of its common stock. The amount of securities reported on this Form 4 have been adjusted to reflect the stock split."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes certain shares included in the Rush Enterprises, Inc. 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