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Stock is issued when and as vested."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The restricted stock units vest in five equal annual installments on May 31 of each year, commencing on May 31, 2019 and ending on May 31, 2023.  Stock is issued when and as vested."}],"balance_after":3749,"derivative":{"underlying":"Class A Common Stock","underlying_shares":3749},"source":{"system":"sec-edgar","filing":"0001140361-18-022850","document":"doc1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1492691/000114036118022850/doc1.xml","form_type":"4"}},{"id":3965459,"issuer":{"id":762,"kind":"organization","name":"Knight-Swift Transportation Holdings Inc.","symbol":"KNX"},"owners":[{"id":117368,"kind":"person","name":"Updike James E. Jr.","position":1,"cik":"0001513397","reported_name":"Updike James E. Jr.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP Sales & Mkt, Knight Trans."}}],"security":"Restricted Stock Units","published_at":"2018-04-11T22:14:17.000Z","date":"2018-01-31","kind":"exercise","acquired":false,"shares":2000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F2","text":"This row is added to show the conversion of restricted stock units upon vesting."}],"balance_after":0,"derivative":{"exercise_price":0,"exercise_date":"2018-01-31","expiration_date":"2018-01-31","underlying":"Class A Common Stock","underlying_shares":2000},"source":{"system":"sec-edgar","filing":"0001140361-18-018251","document":"doc1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1492691/000114036118018251/doc1.xml","form_type":"4/A","original_submission_date":"2018-02-02"}},{"id":3965458,"issuer":{"id":762,"kind":"organization","name":"Knight-Swift Transportation Holdings Inc.","symbol":"KNX"},"owners":[{"id":117368,"kind":"person","name":"Updike James E. Jr.","position":1,"cik":"0001513397","reported_name":"Updike James E. Jr.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP Sales & Mkt, Knight Trans."}}],"security":"Restricted Stock Units","published_at":"2018-04-11T22:14:17.000Z","date":"2018-01-31","kind":"exercise","acquired":false,"shares":2400,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F2","text":"This row is added to show the conversion of restricted stock units upon vesting."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The remaining restricted stock units for this grant vest as follows:  approximately 20.5% on January 31, 2019, approximately 18% on January 31, 2020, and approximately 20.5% on each of January 31, 2021, 2022, and 2023."}],"balance_after":11700,"derivative":{"exercise_price":0,"exercise_date":"2018-01-31","underlying":"Class A Common Stock","underlying_shares":2400},"source":{"system":"sec-edgar","filing":"0001140361-18-018251","document":"doc1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1492691/000114036118018251/doc1.xml","form_type":"4/A","original_submission_date":"2018-02-02"}},{"id":3965457,"issuer":{"id":762,"kind":"organization","name":"Knight-Swift Transportation Holdings Inc.","symbol":"KNX"},"owners":[{"id":117368,"kind":"person","name":"Updike James E. Jr.","position":1,"cik":"0001513397","reported_name":"Updike James E. Jr.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP Sales & Mkt, Knight Trans."}}],"security":"Class A Common Stock","published_at":"2018-04-11T22:14:17.000Z","date":"2018-01-31","kind":"exercise","acquired":true,"shares":2000,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"This row is being amended to show that the shares were acquired upon the conversion of restricted stock units (changing from transaction code \"A\" to transaction code \"M\").  The rows on the original Form 4 showing the withholding of shares to satisfy tax obligations are not being amended.  Therefore, the ultimate beneficial ownership of the reporting person as of January 31, 2018 is presented on the original Form 4."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"This row is being amended to show that the shares were acquired upon the conversion of restricted stock units (changing from transaction code \"A\" to transaction code \"M\").  The rows on the original Form 4 showing the withholding of shares to satisfy tax obligations are not being amended.  Therefore, the ultimate beneficial ownership of the reporting person as of January 31, 2018 is presented on the original Form 4."}],"balance_after":25593.99,"source":{"system":"sec-edgar","filing":"0001140361-18-018251","document":"doc1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1492691/000114036118018251/doc1.xml","form_type":"4/A","original_submission_date":"2018-02-02"}},{"id":3965456,"issuer":{"id":762,"kind":"organization","name":"Knight-Swift Transportation Holdings Inc.","symbol":"KNX"},"owners":[{"id":117368,"kind":"person","name":"Updike James E. Jr.","position":1,"cik":"0001513397","reported_name":"Updike James E. Jr.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP Sales & Mkt, Knight Trans."}}],"security":"Class A Common Stock","published_at":"2018-04-11T22:14:17.000Z","date":"2018-01-31","kind":"exercise","acquired":true,"shares":2400,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"This row is being amended to show that the shares were acquired upon the conversion of restricted stock units (changing from transaction code \"A\" to transaction code \"M\").  The rows on the original Form 4 showing the withholding of shares to satisfy tax obligations are not being amended.  Therefore, the ultimate beneficial ownership of the reporting person as of January 31, 2018 is presented on the original Form 4."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"This row is being amended to show that the shares were acquired upon the conversion of restricted stock units (changing from transaction code \"A\" to transaction code \"M\").  The rows on the original Form 4 showing the withholding of shares to satisfy tax obligations are not being amended.  Therefore, the ultimate beneficial ownership of the reporting person as of January 31, 2018 is presented on the original Form 4."}],"balance_after":24712.99,"source":{"system":"sec-edgar","filing":"0001140361-18-018251","document":"doc1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1492691/000114036118018251/doc1.xml","form_type":"4/A","original_submission_date":"2018-02-02"}},{"id":3965455,"issuer":{"id":762,"kind":"organization","name":"Knight-Swift Transportation Holdings Inc.","symbol":"KNX"},"owners":[{"id":117368,"kind":"person","name":"Updike James E. Jr.","position":1,"cik":"0001513397","reported_name":"Updike James E. Jr.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP Sales & Mkt, Knight Trans."}}],"security":"Restricted Stock Units","published_at":"2018-04-11T22:11:38.000Z","date":"2017-09-08","kind":"grant","acquired":true,"shares":4498,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"This row is being added to show derivative securities acquired pursuant to an Agreement and Plan of Merger dated April 9, 2017, among the issuer, Bishop Merger Sub, Inc. and Knight Transportation, Inc. (the \"Merger Agreement\"), providing that the issuer would assume each restricted stock award of Knight Transportation, Inc. Common Stock subject to vesting and automatically convert such awards into restricted stock awards of issuer's Class A Common Stock equal to the number of shares of Knight Transportation, Inc. Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"This restricted stock unit grant vests in five equal annual installments beginning on May 31, 2018."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"This restricted stock unit grant vests in five equal annual installments beginning on May 31, 2018."}],"balance_after":4498,"derivative":{"exercise_price":0,"underlying":"Class A Common Stock","underlying_shares":4498},"source":{"system":"sec-edgar","filing":"0001140361-18-018250","document":"doc1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1492691/000114036118018250/doc1.xml","form_type":"4/A","original_submission_date":"2017-09-12"}},{"id":3965454,"issuer":{"id":762,"kind":"organization","name":"Knight-Swift Transportation Holdings Inc.","symbol":"KNX"},"owners":[{"id":117368,"kind":"person","name":"Updike James E. Jr.","position":1,"cik":"0001513397","reported_name":"Updike James E. Jr.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP Sales & Mkt, Knight Trans."}}],"security":"Restricted Stock Units","published_at":"2018-04-11T22:11:38.000Z","date":"2017-09-08","kind":"grant","acquired":true,"shares":2000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"This row is being added to show derivative securities acquired pursuant to an Agreement and Plan of Merger dated April 9, 2017, among the issuer, Bishop Merger Sub, Inc. and Knight Transportation, Inc. (the \"Merger Agreement\"), providing that the issuer would assume each restricted stock award of Knight Transportation, Inc. Common Stock subject to vesting and automatically convert such awards into restricted stock awards of issuer's Class A Common Stock equal to the number of shares of Knight Transportation, Inc. Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The remaining restricted stock units for this grant vest on January 31, 2018."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"The remaining restricted stock units for this grant vest on January 31, 2018."}],"balance_after":2000,"derivative":{"exercise_price":0,"underlying":"Class A Common Stock","underlying_shares":2000},"source":{"system":"sec-edgar","filing":"0001140361-18-018250","document":"doc1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1492691/000114036118018250/doc1.xml","form_type":"4/A","original_submission_date":"2017-09-12"}},{"id":3965453,"issuer":{"id":762,"kind":"organization","name":"Knight-Swift Transportation Holdings Inc.","symbol":"KNX"},"owners":[{"id":117368,"kind":"person","name":"Updike James E. Jr.","position":1,"cik":"0001513397","reported_name":"Updike James E. Jr.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP Sales & Mkt, Knight Trans."}}],"security":"Restricted Stock Units","published_at":"2018-04-11T22:11:38.000Z","date":"2017-09-08","kind":"grant","acquired":true,"shares":14100,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"This row is being added to show derivative securities acquired pursuant to an Agreement and Plan of Merger dated April 9, 2017, among the issuer, Bishop Merger Sub, Inc. and Knight Transportation, Inc. (the \"Merger Agreement\"), providing that the issuer would assume each restricted stock award of Knight Transportation, Inc. Common Stock subject to vesting and automatically convert such awards into restricted stock awards of issuer's Class A Common Stock equal to the number of shares of Knight Transportation, Inc. Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The restricted stock units vest as follows: approximately 17% on January 31, 2018, approximately 17% on January 31, 2019, approximately 15% on January 31, 2020, and approximately 17% on each of January 31, 2021, 2022, and 2023."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The restricted stock units vest as follows: approximately 17% on January 31, 2018, approximately 17% on January 31, 2019, approximately 15% on January 31, 2020, and approximately 17% on each of January 31, 2021, 2022, and 2023."}],"balance_after":14100,"derivative":{"exercise_price":0,"underlying":"Class A Common Stock","underlying_shares":14100},"source":{"system":"sec-edgar","filing":"0001140361-18-018250","document":"doc1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1492691/000114036118018250/doc1.xml","form_type":"4/A","original_submission_date":"2017-09-12"}},{"id":3965452,"issuer":{"id":762,"kind":"organization","name":"Knight-Swift Transportation Holdings Inc.","symbol":"KNX"},"owners":[{"id":117368,"kind":"person","name":"Updike James E. Jr.","position":1,"cik":"0001513397","reported_name":"Updike James E. Jr.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP Sales & Mkt, Knight Trans."}}],"security":"Restricted Stock Performance Units","published_at":"2018-04-11T22:11:38.000Z","date":"2017-09-08","kind":"grant","acquired":true,"shares":6190,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"This row is being added to show derivative securities acquired pursuant to an Agreement and Plan of Merger dated April 9, 2017, among the issuer, Bishop Merger Sub, Inc. and Knight Transportation, Inc. (the \"Merger Agreement\"), providing that the issuer would assume each restricted stock award of Knight Transportation, Inc. Common Stock subject to vesting and automatically convert such awards into restricted stock awards of issuer's Class A Common Stock equal to the number of shares of Knight Transportation, Inc. Common Stock."},{"field":"shares","element":"transactionShares","label":"F3","text":"The number of underlying securities is subject to adjustment based on the level of achievement for specified performance targets measured over a performance period ending on December 31, 2017.  The shares underlying this award vested as of September 8, 2017."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The number of underlying securities is subject to adjustment based on the level of achievement for specified performance targets measured over a performance period ending on December 31, 2017.  The shares underlying this award vested as of September 8, 2017."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F3","text":"The number of underlying securities is subject to adjustment based on the level of achievement for specified performance targets measured over a performance period ending on December 31, 2017.  The shares underlying this award vested as of September 8, 2017."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"The number of underlying securities is subject to adjustment based on the level of achievement for specified performance targets measured over a performance period ending on December 31, 2017.  The shares underlying this award vested as of September 8, 2017."}],"balance_after":6190,"derivative":{"exercise_price":0,"expiration_date":"2020-01-31","underlying":"Class A Common Stock","underlying_shares":6190},"source":{"system":"sec-edgar","filing":"0001140361-18-018250","document":"doc1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1492691/000114036118018250/doc1.xml","form_type":"4/A","original_submission_date":"2017-09-12"}},{"id":3965451,"issuer":{"id":762,"kind":"organization","name":"Knight-Swift Transportation Holdings Inc.","symbol":"KNX"},"owners":[{"id":117368,"kind":"person","name":"Updike James E. Jr.","position":1,"cik":"0001513397","reported_name":"Updike James E. Jr.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP Sales & Mkt, Knight Trans."}}],"security":"Restricted Stock Performance Units","published_at":"2018-04-11T22:11:38.000Z","date":"2017-09-08","kind":"grant","acquired":true,"shares":4183,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"This row is being added to show derivative securities acquired pursuant to an Agreement and Plan of Merger dated April 9, 2017, among the issuer, Bishop Merger Sub, Inc. and Knight Transportation, Inc. (the \"Merger Agreement\"), providing that the issuer would assume each restricted stock award of Knight Transportation, Inc. Common Stock subject to vesting and automatically convert such awards into restricted stock awards of issuer's Class A Common Stock equal to the number of shares of Knight Transportation, Inc. Common Stock."},{"field":"shares","element":"transactionShares","label":"F3","text":"The number of underlying securities is subject to adjustment based on the level of achievement for specified performance targets measured over a performance period ending on December 31, 2017.  The shares underlying this award vested as of September 8, 2017."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The number of underlying securities is subject to adjustment based on the level of achievement for specified performance targets measured over a performance period ending on December 31, 2017.  The shares underlying this award vested as of September 8, 2017."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F3","text":"The number of underlying securities is subject to adjustment based on the level of achievement for specified performance targets measured over a performance period ending on December 31, 2017.  The shares underlying this award vested as of September 8, 2017."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"The number of underlying securities is subject to adjustment based on the level of achievement for specified performance targets measured over a performance period ending on December 31, 2017.  The shares underlying this award vested as of September 8, 2017."}],"balance_after":4183,"derivative":{"exercise_price":0,"expiration_date":"2019-01-31","underlying":"Class A Common Stock","underlying_shares":4183},"source":{"system":"sec-edgar","filing":"0001140361-18-018250","document":"doc1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1492691/000114036118018250/doc1.xml","form_type":"4/A","original_submission_date":"2017-09-12"}},{"id":3965450,"issuer":{"id":762,"kind":"organization","name":"Knight-Swift Transportation Holdings Inc.","symbol":"KNX"},"owners":[{"id":117368,"kind":"person","name":"Updike James E. Jr.","position":1,"cik":"0001513397","reported_name":"Updike James E. Jr.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP Sales & Mkt, Knight Trans."}}],"security":"Restricted Stock Performance Units","published_at":"2018-04-11T22:11:38.000Z","date":"2017-09-08","kind":"exercise","acquired":false,"shares":6220,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"This row is being added to show derivative securities acquired pursuant to an Agreement and Plan of Merger dated April 9, 2017, among the issuer, Bishop Merger Sub, Inc. and Knight Transportation, Inc. (the \"Merger Agreement\"), providing that the issuer would assume each restricted stock award of Knight Transportation, Inc. Common Stock subject to vesting and automatically convert such awards into restricted stock awards of issuer's Class A Common Stock equal to the number of shares of Knight Transportation, Inc. Common Stock."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"On March 14, 2014, the reporting person was granted restricted stock units with the amount of shares of common stock awarded to be based on achieving or failing to achieve performance targets measured over a three-year period that ended December 31, 2016. As part of the Merger Agreement, the restricted stock units vest on the effective date of the merger and the shares issued have a market value of $40.85 per share on the effective date of the merger. Each restricted stock unit represents a contingent right to receive one share of Class A Common Stock. The vesting of these restricted stock units is reported in Table I of the original Form 4."},{"field":"shares","element":"transactionShares","label":"F2","text":"On March 14, 2014, the reporting person was granted restricted stock units with the amount of shares of common stock awarded to be based on achieving or failing to achieve performance targets measured over a three-year period that ended December 31, 2016. As part of the Merger Agreement, the restricted stock units vest on the effective date of the merger and the shares issued have a market value of $40.85 per share on the effective date of the merger. Each restricted stock unit represents a contingent right to receive one share of Class A Common Stock. The vesting of these restricted stock units is reported in Table I of the original Form 4."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"On March 14, 2014, the reporting person was granted restricted stock units with the amount of shares of common stock awarded to be based on achieving or failing to achieve performance targets measured over a three-year period that ended December 31, 2016. As part of the Merger Agreement, the restricted stock units vest on the effective date of the merger and the shares issued have a market value of $40.85 per share on the effective date of the merger. Each restricted stock unit represents a contingent right to receive one share of Class A Common Stock. The vesting of these restricted stock units is reported in Table I of the original Form 4."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"On March 14, 2014, the reporting person was granted restricted stock units with the amount of shares of common stock awarded to be based on achieving or failing to achieve performance targets measured over a three-year period that ended December 31, 2016. As part of the Merger Agreement, the restricted stock units vest on the effective date of the merger and the shares issued have a market value of $40.85 per share on the effective date of the merger. Each restricted stock unit represents a contingent right to receive one share of Class A Common Stock. The vesting of these restricted stock units is reported in Table I of the original Form 4."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F2","text":"On March 14, 2014, the reporting person was granted restricted stock units with the amount of shares of common stock awarded to be based on achieving or failing to achieve performance targets measured over a three-year period that ended December 31, 2016. As part of the Merger Agreement, the restricted stock units vest on the effective date of the merger and the shares issued have a market value of $40.85 per share on the effective date of the merger. Each restricted stock unit represents a contingent right to receive one share of Class A Common Stock. The vesting of these restricted stock units is reported in Table I of the original Form 4."}],"balance_after":0,"derivative":{"underlying":"Class A Common Stock","underlying_shares":6220},"source":{"system":"sec-edgar","filing":"0001140361-18-018250","document":"doc1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1492691/000114036118018250/doc1.xml","form_type":"4/A","original_submission_date":"2017-09-12"}},{"id":3965449,"issuer":{"id":762,"kind":"organization","name":"Knight-Swift Transportation Holdings Inc.","symbol":"KNX"},"owners":[{"id":117368,"kind":"person","name":"Updike James E. Jr.","position":1,"cik":"0001513397","reported_name":"Updike James E. Jr.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP Sales & Mkt, Knight Trans."}}],"security":"Restricted Stock Performance Units","published_at":"2018-04-11T22:11:38.000Z","date":"2017-09-08","kind":"grant","acquired":true,"shares":6220,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"This row is being added to show derivative securities acquired pursuant to an Agreement and Plan of Merger dated April 9, 2017, among the issuer, Bishop Merger Sub, Inc. and Knight Transportation, Inc. (the \"Merger Agreement\"), providing that the issuer would assume each restricted stock award of Knight Transportation, Inc. Common Stock subject to vesting and automatically convert such awards into restricted stock awards of issuer's Class A Common Stock equal to the number of shares of Knight Transportation, Inc. Common Stock."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"On March 14, 2014, the reporting person was granted restricted stock units with the amount of shares of common stock awarded to be based on achieving or failing to achieve performance targets measured over a three-year period that ended December 31, 2016. As part of the Merger Agreement, the restricted stock units vest on the effective date of the merger and the shares issued have a market value of $40.85 per share on the effective date of the merger. Each restricted stock unit represents a contingent right to receive one share of Class A Common Stock. The vesting of these restricted stock units is reported in Table I of the original Form 4."},{"field":"shares","element":"transactionShares","label":"F2","text":"On March 14, 2014, the reporting person was granted restricted stock units with the amount of shares of common stock awarded to be based on achieving or failing to achieve performance targets measured over a three-year period that ended December 31, 2016. As part of the Merger Agreement, the restricted stock units vest on the effective date of the merger and the shares issued have a market value of $40.85 per share on the effective date of the merger. Each restricted stock unit represents a contingent right to receive one share of Class A Common Stock. The vesting of these restricted stock units is reported in Table I of the original Form 4."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"On March 14, 2014, the reporting person was granted restricted stock units with the amount of shares of common stock awarded to be based on achieving or failing to achieve performance targets measured over a three-year period that ended December 31, 2016. As part of the Merger Agreement, the restricted stock units vest on the effective date of the merger and the shares issued have a market value of $40.85 per share on the effective date of the merger. Each restricted stock unit represents a contingent right to receive one share of Class A Common Stock. The vesting of these restricted stock units is reported in Table I of the original Form 4."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"On March 14, 2014, the reporting person was granted restricted stock units with the amount of shares of common stock awarded to be based on achieving or failing to achieve performance targets measured over a three-year period that ended December 31, 2016. As part of the Merger Agreement, the restricted stock units vest on the effective date of the merger and the shares issued have a market value of $40.85 per share on the effective date of the merger. Each restricted stock unit represents a contingent right to receive one share of Class A Common Stock. The vesting of these restricted stock units is reported in Table I of the original Form 4."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F2","text":"On March 14, 2014, the reporting person was granted restricted stock units with the amount of shares of common stock awarded to be based on achieving or failing to achieve performance targets measured over a three-year period that ended December 31, 2016. As part of the Merger Agreement, the restricted stock units vest on the effective date of the merger and the shares issued have a market value of $40.85 per share on the effective date of the merger. Each restricted stock unit represents a contingent right to receive one share of Class A Common Stock. The vesting of these restricted stock units is reported in Table I of the original Form 4."}],"balance_after":6220,"derivative":{"exercise_date":"2017-09-08","underlying":"Class A Common Stock","underlying_shares":6220},"source":{"system":"sec-edgar","filing":"0001140361-18-018250","document":"doc1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1492691/000114036118018250/doc1.xml","form_type":"4/A","original_submission_date":"2017-09-12"}},{"id":3965675,"issuer":{"id":167622,"kind":"organization","name":"KNIGHT TRANSPORTATION INC","symbol":"KNX"},"owners":[{"id":117368,"kind":"person","name":"Updike James E. Jr.","position":1,"cik":"0001513397","reported_name":"Updike James E. Jr.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP Sales & Mkt, Knight Trans."}}],"security":"Restricted Stock Units","published_at":"2018-04-11T18:08:41.000Z","date":"2017-09-08","kind":"disposition_to_issuer","acquired":false,"shares":4498,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"This row is added to show disposition of derivative securities pursuant to the Agreement and Plan of Merger, dated April 9, 2017, by and among Swift Transportation Company, Bishop Merger Sub, Inc., and the issuer (the \"Merger Agreement\").  The derivative securities were assumed and replaced by Swift Transportation Company (renamed Knight-Swift Transportation Holdings Inc.)."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F6","text":"This restricted stock unit grant was scheduled to vest in five equal annual installments beginning on May 31, 2018."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"This restricted stock unit grant was scheduled to vest in five equal annual installments beginning on May 31, 2018."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"This restricted stock unit grant was scheduled to vest in five equal annual installments beginning on May 31, 2018."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":4498},"source":{"system":"sec-edgar","filing":"0001140361-18-018248","document":"doc1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/929452/000114036118018248/doc1.xml","form_type":"4/A","original_submission_date":"2017-09-12"}},{"id":3965674,"issuer":{"id":167622,"kind":"organization","name":"KNIGHT TRANSPORTATION INC","symbol":"KNX"},"owners":[{"id":117368,"kind":"person","name":"Updike James E. Jr.","position":1,"cik":"0001513397","reported_name":"Updike James E. Jr.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP Sales & Mkt, Knight Trans."}}],"security":"Restricted Stock Units","published_at":"2018-04-11T18:08:41.000Z","date":"2017-09-08","kind":"disposition_to_issuer","acquired":false,"shares":2000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"This row is added to show disposition of derivative securities pursuant to the Agreement and Plan of Merger, dated April 9, 2017, by and among Swift Transportation Company, Bishop Merger Sub, Inc., and the issuer (the \"Merger Agreement\").  The derivative securities were assumed and replaced by Swift Transportation Company (renamed Knight-Swift Transportation Holdings Inc.)."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F5","text":"The remaining restricted stock units for this grant were scheduled to vest on January 31, 2018."},{"field":"date","element":"transactionDate","label":"F5","text":"The remaining restricted stock units for this grant were scheduled to vest on January 31, 2018."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The remaining restricted stock units for this grant were scheduled to vest on January 31, 2018."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"The remaining restricted stock units for this grant were scheduled to vest on January 31, 2018."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":2000},"source":{"system":"sec-edgar","filing":"0001140361-18-018248","document":"doc1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/929452/000114036118018248/doc1.xml","form_type":"4/A","original_submission_date":"2017-09-12"}},{"id":3965673,"issuer":{"id":167622,"kind":"organization","name":"KNIGHT TRANSPORTATION INC","symbol":"KNX"},"owners":[{"id":117368,"kind":"person","name":"Updike James E. Jr.","position":1,"cik":"0001513397","reported_name":"Updike James E. Jr.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP Sales & Mkt, Knight Trans."}}],"security":"Restricted Stock Units","published_at":"2018-04-11T18:08:41.000Z","date":"2017-09-08","kind":"disposition_to_issuer","acquired":false,"shares":14100,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"This row is added to show disposition of derivative securities pursuant to the Agreement and Plan of Merger, dated April 9, 2017, by and among Swift Transportation Company, Bishop Merger Sub, Inc., and the issuer (the \"Merger Agreement\").  The derivative securities were assumed and replaced by Swift Transportation Company (renamed Knight-Swift Transportation Holdings Inc.)."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"The remaining restricted stock units for this grant were scheduled to vest as follows:  approximately 17% on January 31, 2018, approximately 17% on January 31, 2019, approximately 15% on January 31, 2020, and approximately 17% on each of January 31, 2021, 2022, and 2023."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The remaining restricted stock units for this grant were scheduled to vest as follows:  approximately 17% on January 31, 2018, approximately 17% on January 31, 2019, approximately 15% on January 31, 2020, and approximately 17% on each of January 31, 2021, 2022, and 2023."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The remaining restricted stock units for this grant were scheduled to vest as follows:  approximately 17% on January 31, 2018, approximately 17% on January 31, 2019, approximately 15% on January 31, 2020, and approximately 17% on each of January 31, 2021, 2022, and 2023."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":14100},"source":{"system":"sec-edgar","filing":"0001140361-18-018248","document":"doc1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/929452/000114036118018248/doc1.xml","form_type":"4/A","original_submission_date":"2017-09-12"}},{"id":3965672,"issuer":{"id":167622,"kind":"organization","name":"KNIGHT TRANSPORTATION INC","symbol":"KNX"},"owners":[{"id":117368,"kind":"person","name":"Updike James E. Jr.","position":1,"cik":"0001513397","reported_name":"Updike James E. Jr.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP Sales & Mkt, Knight Trans."}}],"security":"Restricted Stock Performance Units","published_at":"2018-04-11T18:08:41.000Z","date":"2017-09-08","kind":"disposition_to_issuer","acquired":false,"shares":6190,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"This row is added to show disposition of derivative securities pursuant to the Agreement and Plan of Merger, dated April 9, 2017, by and among Swift Transportation Company, Bishop Merger Sub, Inc., and the issuer (the \"Merger Agreement\").  The derivative securities were assumed and replaced by Swift Transportation Company (renamed Knight-Swift Transportation Holdings Inc.)."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"The number of underlying securities is subject to adjustment based on the level of achievement for specified performance targets measured over a performance period ending on December 31, 2017.  The shares underlying this award vested as of September 8, 2017."},{"field":"shares","element":"transactionShares","label":"F3","text":"The number of underlying securities is subject to adjustment based on the level of achievement for specified performance targets measured over a performance period ending on December 31, 2017.  The shares underlying this award vested as of September 8, 2017."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The number of underlying securities is subject to adjustment based on the level of achievement for specified performance targets measured over a performance period ending on December 31, 2017.  The shares underlying this award vested as of September 8, 2017."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The number of underlying securities is subject to adjustment based on the level of achievement for specified performance targets measured over a performance period ending on December 31, 2017.  The shares underlying this award vested as of September 8, 2017."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F3","text":"The number of underlying securities is subject to adjustment based on the level of achievement for specified performance targets measured over a performance period ending on December 31, 2017.  The shares underlying this award vested as of September 8, 2017."}],"balance_after":0,"derivative":{"expiration_date":"2020-01-31","underlying":"Common Stock","underlying_shares":6190},"source":{"system":"sec-edgar","filing":"0001140361-18-018248","document":"doc1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/929452/000114036118018248/doc1.xml","form_type":"4/A","original_submission_date":"2017-09-12"}}],"next_cursor":"2018-04-11T18:08:41.000000Z,3965672"}