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The price reported reflects the weighted average sales price. 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The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer of a security holder of the issuer full information regarding the number of shares and prices at which the transaction was affected."}],"balance_after":97074,"source":{"system":"sec-edgar","filing":"0001676532-23-000024","document":"wk-form4_1702413201.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000167653223000024/wk-form4_1702413201.xml","form_type":"4"}},{"id":1735204,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":27292,"kind":"person","name":"Flaherty Scott B.","position":1,"cik":"0001676532","reported_name":"Flaherty Scott B.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, CFO"}}],"security":"Common Stock","published_at":"2023-11-21T01:06:37.000Z","date":"2023-11-17","kind":"sale","planned":false,"acquired":false,"shares":436,"price":45.64,"value":19899.04,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares sold pursuant to a 10b5-1 transaction."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Represents the weighted average sales price per share. The shares were sold at prices ranging from $44.75 to $46.26. The reporting person has provided to the issuer and will provide to any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"This amendment is to correct the total amount of securities beneficially owned following the sales on November 17, 2023."}],"balance_after":97374,"source":{"system":"sec-edgar","filing":"0001676532-23-000022","document":"wk-form4a_1700528788.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000167653223000022/wk-form4a_1700528788.xml","form_type":"4/A","original_submission_date":"2023-11-20"}},{"id":1735203,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":27292,"kind":"person","name":"Flaherty Scott B.","position":1,"cik":"0001676532","reported_name":"Flaherty Scott B.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, CFO"}}],"security":"Common Stock","published_at":"2023-11-21T00:55:10.000Z","date":"2023-11-17","kind":"sale","planned":true,"acquired":false,"shares":436,"price":45.64,"value":19899.04,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares sold pursuant to a 10b5-1 transaction."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Represents the weighted average sales price per share. The shares were sold at prices ranging from $44.75 to $46.26. The reporting person has provided to the issuer, and will provide to any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range."}],"balance_after":98204,"source":{"system":"sec-edgar","filing":"0001676532-23-000020","document":"wk-form4_1700528100.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000167653223000020/wk-form4_1700528100.xml","form_type":"4"}},{"id":1739662,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":27292,"kind":"person","name":"Flaherty Scott B.","position":1,"cik":"0001676532","reported_name":"Flaherty Scott B.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, CFO"}}],"security":"Common Stock","published_at":"2023-11-16T12:08:45.000Z","date":"2023-11-15","kind":"sale","planned":true,"acquired":false,"shares":680,"price":45.35,"value":30838.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares sold pursuant to a 10b5-l transaction."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Represents the weighted average sales price per share. The shares were sold at prices ranging from $44.91 to $45.75. The reporting person has provided to the issuer, and will provide to any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range."}],"balance_after":97810,"source":{"system":"sec-edgar","filing":"0001104659-23-118908","document":"tm2330906-1_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000110465923118908/tm2330906-1_4seq1.xml","form_type":"4"}},{"id":1739661,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":27292,"kind":"person","name":"Flaherty Scott B.","position":1,"cik":"0001676532","reported_name":"Flaherty Scott B.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, CFO"}}],"security":"Common Stock","published_at":"2023-11-16T12:08:45.000Z","date":"2023-11-14","kind":"sale","planned":true,"acquired":false,"shares":150,"price":44.89,"value":6733.5,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares sold pursuant to a 10b5-l transaction."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Represents the weighted average sales price per share. The shares were sold at prices ranging from $44.75 to $45.54. The reporting person has provided to the issuer and will provide to any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range."}],"balance_after":98490,"source":{"system":"sec-edgar","filing":"0001104659-23-118908","document":"tm2330906-1_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000110465923118908/tm2330906-1_4seq1.xml","form_type":"4"}},{"id":1746989,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":27292,"kind":"person","name":"Flaherty Scott B.","position":1,"cik":"0001676532","reported_name":"Flaherty Scott B.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, CFO"}}],"security":"Common Stock","published_at":"2023-11-08T14:47:30.000Z","date":"2023-11-07","kind":"sale","planned":true,"acquired":false,"shares":196,"price":45.33,"value":8884.68,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares sold pursuant to a 10b5-1 transaction."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Represents the weighted average sales price per share. The shares were sold at prices ranging from $44.79 to $46.08. The reporting person has provided to the issuer, and will provide to any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range."}],"balance_after":98640,"source":{"system":"sec-edgar","filing":"0001676532-23-000018","document":"wk-form4_1699454841.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000167653223000018/wk-form4_1699454841.xml","form_type":"4"}},{"id":1746988,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":27292,"kind":"person","name":"Flaherty Scott B.","position":1,"cik":"0001676532","reported_name":"Flaherty Scott B.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, CFO"}}],"security":"Common Stock","published_at":"2023-11-08T14:47:30.000Z","date":"2023-11-06","kind":"sale","planned":true,"acquired":false,"shares":674,"price":45.37,"value":30579.38,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares sold pursuant to a 10b5-1 transaction."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Represents the weighted average sales price per share. The shares were sold at prices ranging from $44.79 to $45.60. The reporting person has provided to the issuer and will provide to any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range."}],"balance_after":98836,"source":{"system":"sec-edgar","filing":"0001676532-23-000018","document":"wk-form4_1699454841.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000167653223000018/wk-form4_1699454841.xml","form_type":"4"}},{"id":1750475,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":27292,"kind":"person","name":"Flaherty Scott B.","position":1,"cik":"0001676532","reported_name":"Flaherty Scott B.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, CFO"}}],"security":"Common Stock","published_at":"2023-11-03T20:54:26.000Z","date":"2023-11-03","kind":"sale","planned":false,"acquired":false,"shares":133,"price":44.93,"value":5975.69,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares sold pursuant to a 10b5-1 transaction."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Represents the weighted average sales price per share. The shares were sold at prices ranging from $44.75 to $45.50. The reporting person has provided to the issuer, and will provide to any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range."}],"balance_after":99510,"source":{"system":"sec-edgar","filing":"0001676532-23-000016","document":"wk-form4_1699044854.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000167653223000016/wk-form4_1699044854.xml","form_type":"4"}},{"id":1750474,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":27292,"kind":"person","name":"Flaherty Scott B.","position":1,"cik":"0001676532","reported_name":"Flaherty Scott B.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, CFO"}}],"security":"Common Stock","published_at":"2023-11-03T20:54:26.000Z","date":"2023-11-02","kind":"sale","planned":false,"acquired":false,"shares":13,"price":44.75,"value":581.75,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares sold pursuant to a 10b5-1 transaction."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Represents the weighted average sales price per share. The shares were sold in one trade at $44.75. The reporting person has provided to the issuer and will provide to any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range."}],"balance_after":99643,"source":{"system":"sec-edgar","filing":"0001676532-23-000016","document":"wk-form4_1699044854.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000167653223000016/wk-form4_1699044854.xml","form_type":"4"}},{"id":1750473,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":27292,"kind":"person","name":"Flaherty Scott B.","position":1,"cik":"0001676532","reported_name":"Flaherty Scott B.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, CFO"}}],"security":"Common Stock","published_at":"2023-11-03T20:54:26.000Z","date":"2023-11-01","kind":"sale","planned":false,"acquired":false,"shares":628,"price":45.35,"value":28479.8,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares sold pursuant to a 10b5-1 transaction."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Represents the weighted average sales price per share. The shares were sold at prices ranging from $45.00 to $45.52. The reporting person has provided to the issuer, and will provide to any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range."}],"balance_after":99656,"source":{"system":"sec-edgar","filing":"0001676532-23-000016","document":"wk-form4_1699044854.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000167653223000016/wk-form4_1699044854.xml","form_type":"4"}},{"id":1774177,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":27292,"kind":"person","name":"Flaherty Scott B.","position":1,"cik":"0001676532","reported_name":"Flaherty Scott B.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, CFO"}}],"security":"Common Stock","published_at":"2023-09-25T13:40:08.000Z","date":"2023-09-21","kind":"sale","planned":true,"acquired":false,"shares":90,"price":45.03,"value":4052.7,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Represents the weighted average sales price per share. The shares were sold at prices ranging from $44.85 to $45.25. 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The price reported reflects the weighted average sales price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer of a security holder of the issuer full information regarding the number of shares and prices at which the transaction was affected."}],"balance_after":100237,"source":{"system":"sec-edgar","filing":"0001676532-23-000010","document":"wk-form4_1684951914.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000167653223000010/wk-form4_1684951914.xml","form_type":"4"}},{"id":1894088,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":27292,"kind":"person","name":"Flaherty Scott B.","position":1,"cik":"0001676532","reported_name":"Flaherty Scott B.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, CFO"}}],"security":"Common Stock","published_at":"2023-05-15T20:39:56.000Z","date":"2023-05-15","kind":"sale","planned":false,"acquired":false,"shares":339,"price":45.02,"value":15261.78,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $45.00 to $45.30. The price reported reflects the weighted average sales price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer of a security holder of the issuer full information regarding the number of shares and prices at which the transaction was affected."}],"balance_after":101532,"source":{"system":"sec-edgar","filing":"0001676532-23-000008","document":"wk-form4_1684183167.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000167653223000008/wk-form4_1684183167.xml","form_type":"4"}},{"id":1894087,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":27292,"kind":"person","name":"Flaherty Scott B.","position":1,"cik":"0001676532","reported_name":"Flaherty Scott B.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, CFO"}}],"security":"Common Stock","published_at":"2023-05-15T20:39:56.000Z","date":"2023-05-12","kind":"sale","planned":false,"acquired":false,"shares":244,"price":45.12,"value":11009.28,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $45.00 to $45.46. The price reported reflects the weighted average sales price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer of a security holder of the issuer full information regarding the number of shares and prices at which the transaction was affected."}],"balance_after":101871,"source":{"system":"sec-edgar","filing":"0001676532-23-000008","document":"wk-form4_1684183167.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000167653223000008/wk-form4_1684183167.xml","form_type":"4"}},{"id":1894086,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":27292,"kind":"person","name":"Flaherty Scott B.","position":1,"cik":"0001676532","reported_name":"Flaherty Scott B.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, CFO"}}],"security":"Common Stock","published_at":"2023-05-15T20:39:56.000Z","date":"2023-05-11","kind":"sale","planned":false,"acquired":false,"shares":122,"price":45.43,"value":5542.46,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"This transaction was executed in multiple trades at prices ranging from $45.38 to $45.49. The price reported reflects the weighted average sales price. 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