{"transactions":[{"id":2403,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2026-09-03T20:30:20.000Z","date":"2026-09-01","kind":"sale","planned":true,"acquired":false,"shares":15000,"price":53.9043,"value":808564.5,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on March 24, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $53.55 to $54.25, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) of this Form 4."}],"balance_after":420888,"source":{"system":"sec-edgar","filing":"0000905148-26-004074","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1453104/000090514826004074/form4.xml","form_type":"4"}},{"id":696205,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2026-08-05T20:15:59.000Z","date":"2026-08-03","kind":"sale","planned":true,"acquired":false,"shares":9363,"price":73.6832,"value":689895.8016,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 24, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"This transaction was executed in multiple trades at prices ranging from $73.39 to $74.106, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (4) of this Form 4."}],"balance_after":435888,"source":{"system":"sec-edgar","filing":"0000905148-26-003482","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826003482/form4.xml","form_type":"4"}},{"id":696204,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2026-08-05T20:15:59.000Z","date":"2026-08-03","kind":"sale","planned":true,"acquired":false,"shares":5637,"price":72.7705,"value":410207.3085,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 24, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $72.38 to $73.3697, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (3) of this Form 4."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"These numbers have been adjusted to reflect the 3-for-1 forward stock split, which became effective on July 21, 2026 (the \"Stock Split\")."}],"balance_after":445251,"source":{"system":"sec-edgar","filing":"0000905148-26-003482","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826003482/form4.xml","form_type":"4"}},{"id":716181,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-07-06T20:15:18.000Z","date":"2026-07-01","kind":"sale","planned":true,"acquired":false,"shares":236,"price":229.53,"value":54169.08,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on March 24, 2026."}],"balance_after":150296,"source":{"system":"sec-edgar","filing":"0000905148-26-003170","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826003170/form4.xml","form_type":"4"}},{"id":716180,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-07-06T20:15:18.000Z","date":"2026-07-01","kind":"sale","planned":true,"acquired":false,"shares":1100,"price":227.9898,"value":250788.78,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on March 24, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"This transaction was executed in multiple trades at prices ranging from $227.64 to $228.42, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (7) of this Form 4."}],"balance_after":150532,"source":{"system":"sec-edgar","filing":"0000905148-26-003170","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826003170/form4.xml","form_type":"4"}},{"id":716179,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-07-06T20:15:18.000Z","date":"2026-07-01","kind":"sale","planned":true,"acquired":false,"shares":248,"price":227.2126,"value":56348.7248,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on March 24, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"This transaction was executed in multiple trades at prices ranging from $226.64 to $227.35, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (6) of this Form 4."}],"balance_after":151632,"source":{"system":"sec-edgar","filing":"0000905148-26-003170","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826003170/form4.xml","form_type":"4"}},{"id":716178,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-07-06T20:15:18.000Z","date":"2026-07-01","kind":"sale","planned":true,"acquired":false,"shares":200,"price":225.09,"value":45018.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on March 24, 2026."}],"balance_after":151880,"source":{"system":"sec-edgar","filing":"0000905148-26-003170","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826003170/form4.xml","form_type":"4"}},{"id":716177,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-07-06T20:15:18.000Z","date":"2026-07-01","kind":"sale","planned":true,"acquired":false,"shares":500,"price":223.912,"value":111956.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on March 24, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"This transaction was executed in multiple trades at prices ranging from $223.41 to $224.21, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (5) of this Form 4."}],"balance_after":152080,"source":{"system":"sec-edgar","filing":"0000905148-26-003170","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826003170/form4.xml","form_type":"4"}},{"id":716176,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-07-06T20:15:18.000Z","date":"2026-07-01","kind":"sale","planned":true,"acquired":false,"shares":700,"price":222.7057,"value":155893.99,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on March 24, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"This transaction was executed in multiple trades at prices ranging from $222.40 to $223.28, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (4) of this Form 4."}],"balance_after":152580,"source":{"system":"sec-edgar","filing":"0000905148-26-003170","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826003170/form4.xml","form_type":"4"}},{"id":716175,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-07-06T20:15:18.000Z","date":"2026-07-01","kind":"sale","planned":true,"acquired":false,"shares":1700,"price":221.8071,"value":377072.07,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on March 24, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $221.34 to $222.22, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (3) of this Form 4."}],"balance_after":153280,"source":{"system":"sec-edgar","filing":"0000905148-26-003170","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826003170/form4.xml","form_type":"4"}},{"id":716174,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-07-06T20:15:18.000Z","date":"2026-07-01","kind":"sale","planned":true,"acquired":false,"shares":500,"price":220.618,"value":110309.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on March 24, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $220.30 to $220.73, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) of this Form 4."}],"balance_after":154980,"source":{"system":"sec-edgar","filing":"0000905148-26-003170","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826003170/form4.xml","form_type":"4"}},{"id":792679,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-05-05T20:31:11.000Z","date":"2026-05-01","kind":"sale","planned":true,"acquired":false,"shares":400,"price":194.43,"value":77772.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."}],"balance_after":155480,"source":{"system":"sec-edgar","filing":"0000905148-26-002097","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826002097/form4.xml","form_type":"4"}},{"id":792678,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-05-05T20:31:11.000Z","date":"2026-05-01","kind":"sale","planned":true,"acquired":false,"shares":716,"price":193.6308,"value":138639.6528,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"This transaction was executed in multiple trades at prices ranging from $193.28 to $194.13, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (4) of this Form 4."}],"balance_after":155880,"source":{"system":"sec-edgar","filing":"0000905148-26-002097","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826002097/form4.xml","form_type":"4"}},{"id":792677,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-05-05T20:31:11.000Z","date":"2026-05-01","kind":"sale","planned":true,"acquired":false,"shares":1484,"price":192.7387,"value":286024.2308,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $192.17 to $193.15, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (3) of this Form 4."}],"balance_after":156596,"source":{"system":"sec-edgar","filing":"0000905148-26-002097","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826002097/form4.xml","form_type":"4"}},{"id":792676,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-05-05T20:31:11.000Z","date":"2026-05-01","kind":"sale","planned":true,"acquired":false,"shares":800,"price":191.2231,"value":152978.48,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $190.97 to $191.61, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) of this Form 4."}],"balance_after":158080,"source":{"system":"sec-edgar","filing":"0000905148-26-002097","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826002097/form4.xml","form_type":"4"}},{"id":817507,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-04-03T22:43:23.000Z","date":"2026-04-01","kind":"tax_withholding","planned":true,"acquired":false,"shares":24595,"price":175.62,"value":4319373.9,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F5","text":"Return to Issuer of previously restricted shares to satisfy withholding tax liability."}],"balance_after":158880,"source":{"system":"sec-edgar","filing":"0000905148-26-001548","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826001548/form4.xml","form_type":"4"}},{"id":817506,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-04-03T22:43:23.000Z","date":"2026-04-01","kind":"sale","planned":true,"acquired":false,"shares":1187,"price":174.3748,"value":206982.8876,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"This transaction was executed in multiple trades at prices ranging from $174.07 to $174.70, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (4) of this Form 4."}],"balance_after":183475,"source":{"system":"sec-edgar","filing":"0000905148-26-001548","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826001548/form4.xml","form_type":"4"}},{"id":817505,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-04-03T22:43:23.000Z","date":"2026-04-01","kind":"sale","planned":true,"acquired":false,"shares":1230,"price":173.5972,"value":213524.556,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $173.06 to $174.03, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (3) of this Form 4."}],"balance_after":184662,"source":{"system":"sec-edgar","filing":"0000905148-26-001548","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826001548/form4.xml","form_type":"4"}},{"id":817504,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-04-03T22:43:23.000Z","date":"2026-04-01","kind":"sale","planned":true,"acquired":false,"shares":983,"price":172.4927,"value":169560.3241,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $172.01 to $172.96, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) of this Form 4."}],"balance_after":185892,"source":{"system":"sec-edgar","filing":"0000905148-26-001548","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826001548/form4.xml","form_type":"4"}},{"id":835816,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Performance-based Restricted Stock Award","published_at":"2026-03-18T20:15:34.000Z","date":"2026-03-16","kind":"exercise","planned":false,"acquired":false,"shares":6315,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Performance-based restricted stock award (\"PSA\") granted in 2025 subject to performance-based and time-based vesting over two years. Performance-based vesting criteria, which included a combination of profitability of the Issuer's services businesses, growth of the Issuer's leasing portfolio and the viability of the Issuer's Sustainable Aviation Fuel initiative, were certified on March 16, 2026. Each PSA represents a contingent right to receive one share of the Issuer's common stock upon vesting."},{"field":"shares","element":"transactionShares","label":"F11","text":"Reported amount has been adjusted to reflect the actual number of PSAs earned, based on the extent to which the performance-based vesting criteria were achieved. The remaining 5,343 PSAs of the 100% target amount reported in the Form 4 filed by the Reporting Person on January 6, 2025 were forfeited."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Performance-based restricted stock award (\"PSA\") granted in 2025 subject to performance-based and time-based vesting over two years. Performance-based vesting criteria, which included a combination of profitability of the Issuer's services businesses, growth of the Issuer's leasing portfolio and the viability of the Issuer's Sustainable Aviation Fuel initiative, were certified on March 16, 2026. Each PSA represents a contingent right to receive one share of the Issuer's common stock upon vesting."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Performance-based restricted stock award (\"PSA\") granted in 2025 subject to performance-based and time-based vesting over two years. Performance-based vesting criteria, which included a combination of profitability of the Issuer's services businesses, growth of the Issuer's leasing portfolio and the viability of the Issuer's Sustainable Aviation Fuel initiative, were certified on March 16, 2026. Each PSA represents a contingent right to receive one share of the Issuer's common stock upon vesting."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Performance-based restricted stock award (\"PSA\") granted in 2025 subject to performance-based and time-based vesting over two years. Performance-based vesting criteria, which included a combination of profitability of the Issuer's services businesses, growth of the Issuer's leasing portfolio and the viability of the Issuer's Sustainable Aviation Fuel initiative, were certified on March 16, 2026. Each PSA represents a contingent right to receive one share of the Issuer's common stock upon vesting."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F11","text":"Reported amount has been adjusted to reflect the actual number of PSAs earned, based on the extent to which the performance-based vesting criteria were achieved. The remaining 5,343 PSAs of the 100% target amount reported in the Form 4 filed by the Reporting Person on January 6, 2025 were forfeited."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F11","text":"Reported amount has been adjusted to reflect the actual number of PSAs earned, based on the extent to which the performance-based vesting criteria were achieved. The remaining 5,343 PSAs of the 100% target amount reported in the Form 4 filed by the Reporting Person on January 6, 2025 were forfeited."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":6315},"source":{"system":"sec-edgar","filing":"0000905148-26-001385","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826001385/form4.xml","form_type":"4"}},{"id":835815,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-03-18T20:15:34.000Z","date":"2026-03-16","kind":"tax_withholding","planned":false,"acquired":false,"shares":785,"price":167.18,"value":131236.3,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Return to Issuer of previously restricted shares to satisfy withholding tax liability."}],"balance_after":186876,"source":{"system":"sec-edgar","filing":"0000905148-26-001385","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826001385/form4.xml","form_type":"4"}},{"id":835814,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-03-18T20:15:34.000Z","date":"2026-03-16","kind":"exercise","planned":false,"acquired":true,"shares":6315,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Performance-based restricted stock award (\"PSA\") granted in 2025 subject to performance-based and time-based vesting over two years. Performance-based vesting criteria, which included a combination of profitability of the Issuer's services businesses, growth of the Issuer's leasing portfolio and the viability of the Issuer's Sustainable Aviation Fuel initiative, were certified on March 16, 2026. Each PSA represents a contingent right to receive one share of the Issuer's common stock upon vesting."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Performance-based restricted stock award (\"PSA\") granted in 2025 subject to performance-based and time-based vesting over two years. Performance-based vesting criteria, which included a combination of profitability of the Issuer's services businesses, growth of the Issuer's leasing portfolio and the viability of the Issuer's Sustainable Aviation Fuel initiative, were certified on March 16, 2026. Each PSA represents a contingent right to receive one share of the Issuer's common stock upon vesting."}],"balance_after":187661,"source":{"system":"sec-edgar","filing":"0000905148-26-001385","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826001385/form4.xml","form_type":"4"}},{"id":863123,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-03-04T21:15:40.000Z","date":"2026-03-02","kind":"sale","planned":true,"acquired":false,"shares":40,"price":200.89,"value":8035.6,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."}],"balance_after":181346,"source":{"system":"sec-edgar","filing":"0000905148-26-001141","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826001141/form4.xml","form_type":"4"}},{"id":863122,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-03-04T21:15:40.000Z","date":"2026-03-02","kind":"sale","planned":true,"acquired":false,"shares":100,"price":199.77,"value":19977.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."}],"balance_after":181386,"source":{"system":"sec-edgar","filing":"0000905148-26-001141","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826001141/form4.xml","form_type":"4"}},{"id":863121,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-03-04T21:15:40.000Z","date":"2026-03-02","kind":"sale","planned":true,"acquired":false,"shares":200,"price":198.51,"value":39702.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."}],"balance_after":181486,"source":{"system":"sec-edgar","filing":"0000905148-26-001141","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826001141/form4.xml","form_type":"4"}},{"id":863120,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-03-04T21:15:40.000Z","date":"2026-03-02","kind":"sale","planned":true,"acquired":false,"shares":400,"price":197.5944,"value":79037.76,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"This transaction was executed in multiple trades at prices ranging from $197.0575 to $197.78, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (5) of this Form 4."}],"balance_after":181686,"source":{"system":"sec-edgar","filing":"0000905148-26-001141","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826001141/form4.xml","form_type":"4"}},{"id":863119,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-03-04T21:15:40.000Z","date":"2026-03-02","kind":"sale","planned":true,"acquired":false,"shares":647,"price":196.6329,"value":127221.4863,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"This transaction was executed in multiple trades at prices ranging from $196.05 to $197.01, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (4) of this Form 4."}],"balance_after":182086,"source":{"system":"sec-edgar","filing":"0000905148-26-001141","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826001141/form4.xml","form_type":"4"}},{"id":863118,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-03-04T21:15:40.000Z","date":"2026-03-02","kind":"sale","planned":true,"acquired":false,"shares":1052,"price":195.0868,"value":205231.3136,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $195.01 to $195.72, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (3) of this Form 4."}],"balance_after":182733,"source":{"system":"sec-edgar","filing":"0000905148-26-001141","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826001141/form4.xml","form_type":"4"}},{"id":863117,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-03-04T21:15:40.000Z","date":"2026-03-02","kind":"sale","planned":true,"acquired":false,"shares":961,"price":194.4479,"value":186864.4319,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $194.01 to $194.76, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) of this Form 4."}],"balance_after":183785,"source":{"system":"sec-edgar","filing":"0000905148-26-001141","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826001141/form4.xml","form_type":"4"}},{"id":920056,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-02-04T21:18:20.000Z","date":"2026-02-02","kind":"sale","planned":true,"acquired":false,"shares":260,"price":187.4485,"value":48736.61,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"This transaction was executed in multiple trades at prices ranging from $187.31 to $187.49, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (5) of this Form 4."}],"balance_after":184746,"source":{"system":"sec-edgar","filing":"0000905148-26-000494","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826000494/form4.xml","form_type":"4"}},{"id":920055,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-02-04T21:18:20.000Z","date":"2026-02-02","kind":"sale","planned":true,"acquired":false,"shares":1140,"price":186.6691,"value":212802.774,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"This transaction was executed in multiple trades at prices ranging from $186.16 to $186.95, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (4) of this Form 4."}],"balance_after":185006,"source":{"system":"sec-edgar","filing":"0000905148-26-000494","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826000494/form4.xml","form_type":"4"}},{"id":920054,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-02-04T21:18:20.000Z","date":"2026-02-02","kind":"sale","planned":true,"acquired":false,"shares":1200,"price":185.5008,"value":222600.96,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $185.00 to $185.87, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (3) of this Form 4."}],"balance_after":186146,"source":{"system":"sec-edgar","filing":"0000905148-26-000494","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826000494/form4.xml","form_type":"4"}},{"id":920053,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-02-04T21:18:20.000Z","date":"2026-02-02","kind":"sale","planned":true,"acquired":false,"shares":600,"price":184.6358,"value":110781.48,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $184.00 to $184.91, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) of this Form 4."}],"balance_after":187346,"source":{"system":"sec-edgar","filing":"0000905148-26-000494","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826000494/form4.xml","form_type":"4"}},{"id":920052,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-02-04T21:18:20.000Z","date":"2026-02-02","kind":"sale","planned":true,"acquired":false,"shares":200,"price":183,"value":36600.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."}],"balance_after":187946,"source":{"system":"sec-edgar","filing":"0000905148-26-000494","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826000494/form4.xml","form_type":"4"}},{"id":948267,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"Chief Executive Officer"}}],"security":"Performance-based Restricted Stock Award","published_at":"2026-01-06T21:24:21.000Z","date":"2026-01-02","kind":"grant","planned":true,"acquired":true,"shares":22368,"price":134.12,"value":2999996.16,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F14","text":"Grant of performance-based restricted stock award (\"PSA\") subject to performance-based and time-based vesting over three years. Performance-based vesting criteria include a combination of return on equity and combined value of the issuer's businesses and its fund, joint venture, and managed portfolios. Each PSA represents a contingent right to receive one share of the Issuer's common stock to the extent the performance-based criteria is met. Reported amount assumes 100% performance-based vesting, but actual number of PSAs earned may be 25% more or less than the reported amount, depending on the extent to which the performance-based vesting criteria are met or not met."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F14","text":"Grant of performance-based restricted stock award (\"PSA\") subject to performance-based and time-based vesting over three years. Performance-based vesting criteria include a combination of return on equity and combined value of the issuer's businesses and its fund, joint venture, and managed portfolios. Each PSA represents a contingent right to receive one share of the Issuer's common stock to the extent the performance-based criteria is met. Reported amount assumes 100% performance-based vesting, but actual number of PSAs earned may be 25% more or less than the reported amount, depending on the extent to which the performance-based vesting criteria are met or not met."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F14","text":"Grant of performance-based restricted stock award (\"PSA\") subject to performance-based and time-based vesting over three years. Performance-based vesting criteria include a combination of return on equity and combined value of the issuer's businesses and its fund, joint venture, and managed portfolios. Each PSA represents a contingent right to receive one share of the Issuer's common stock to the extent the performance-based criteria is met. Reported amount assumes 100% performance-based vesting, but actual number of PSAs earned may be 25% more or less than the reported amount, depending on the extent to which the performance-based vesting criteria are met or not met."}],"balance_after":22368,"derivative":{"underlying":"Common Stock","underlying_shares":22368},"source":{"system":"sec-edgar","filing":"0000905148-26-000063","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826000063/form4.xml","form_type":"4"}},{"id":948266,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-01-06T21:24:21.000Z","date":"2026-01-02","kind":"tax_withholding","planned":true,"acquired":false,"shares":1039,"price":134.12,"value":139350.68,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F5","text":"Return to issuer of previously restricted shares to satisfy withholding tax liability."}],"balance_after":188146,"source":{"system":"sec-edgar","filing":"0000905148-26-000063","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826000063/form4.xml","form_type":"4"}},{"id":948265,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-01-06T21:24:21.000Z","date":"2026-01-02","kind":"grant","planned":true,"acquired":true,"shares":14912,"price":134.12,"value":1999997.44,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Restrictive Stock Grant vesting over three years."}],"balance_after":189185,"source":{"system":"sec-edgar","filing":"0000905148-26-000063","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826000063/form4.xml","form_type":"4"}},{"id":948264,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-01-06T21:24:21.000Z","date":"2026-01-02","kind":"sale","planned":true,"acquired":false,"shares":100,"price":134.8,"value":13480.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."}],"balance_after":174273,"source":{"system":"sec-edgar","filing":"0000905148-26-000063","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826000063/form4.xml","form_type":"4"}},{"id":948263,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-01-06T21:24:21.000Z","date":"2026-01-02","kind":"sale","planned":true,"acquired":false,"shares":2600,"price":133.4549,"value":346982.74,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $133.33 to $133.85, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (3) of this Form 4."}],"balance_after":174373,"source":{"system":"sec-edgar","filing":"0000905148-26-000063","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826000063/form4.xml","form_type":"4"}},{"id":948262,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-01-06T21:24:21.000Z","date":"2026-01-02","kind":"sale","planned":true,"acquired":false,"shares":700,"price":132.5657,"value":92795.99,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $132.18 to $132.89, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) of this Form 4."}],"balance_after":176973,"source":{"system":"sec-edgar","filing":"0000905148-26-000063","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514826000063/form4.xml","form_type":"4"}},{"id":973184,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-12-12T00:56:59.000Z","date":"2025-12-05","kind":"gift","planned":false,"acquired":false,"shares":795,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Gift of shares from Austin C. 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The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (5) of this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F8","text":"Charles F. 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The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (4) of this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F8","text":"Charles F. 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The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (5) of this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"Wilder Grace Willis 2019 Trust, Austin Willis Trustee."}],"balance_after":1822,"source":{"system":"sec-edgar","filing":"0000905148-25-004222","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":15,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825004222/form4.xml","form_type":"4"}},{"id":982458,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-12-03T22:56:21.000Z","date":"2025-12-02","kind":"sale","planned":true,"acquired":false,"shares":697,"price":120.253,"value":83816.341,"ownership":{"direct":false,"nature":"Daughter"},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"This transaction was executed in multiple trades at prices ranging from $120.00 to $120.9837, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (4) of this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"Wilder Grace Willis 2019 Trust, Austin Willis Trustee."}],"balance_after":1869,"source":{"system":"sec-edgar","filing":"0000905148-25-004222","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":14,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825004222/form4.xml","form_type":"4"}},{"id":982457,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-12-03T22:56:21.000Z","date":"2025-12-02","kind":"sale","planned":true,"acquired":false,"shares":47,"price":121.3961,"value":5705.6167,"ownership":{"direct":false,"nature":"Son"},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"This transaction was executed in multiple trades at prices ranging from $121.0652 to $122.0423, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (5) of this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"Rooster A. 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The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (4) of this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"Rooster A. 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The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (5) of this Form 4."}],"balance_after":179266,"source":{"system":"sec-edgar","filing":"0000905148-25-004222","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825004222/form4.xml","form_type":"4"}},{"id":982453,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-12-03T22:56:21.000Z","date":"2025-12-02","kind":"sale","planned":true,"acquired":false,"shares":2633,"price":120.253,"value":316626.149,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"This transaction was executed in multiple trades at prices ranging from $120.00 to $120.9837, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (4) of this Form 4."}],"balance_after":179443,"source":{"system":"sec-edgar","filing":"0000905148-25-004222","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825004222/form4.xml","form_type":"4"}},{"id":982452,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-12-03T22:56:21.000Z","date":"2025-12-01","kind":"sale","planned":true,"acquired":false,"shares":4,"price":121.5031,"value":486.0124,"ownership":{"direct":false,"nature":"Brother"},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $121.189 to $122.00, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (3) of this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F8","text":"Charles F. Willis V 2019 Trust, Austin Willis Trustee."}],"balance_after":23066,"source":{"system":"sec-edgar","filing":"0000905148-25-004222","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825004222/form4.xml","form_type":"4"}},{"id":982451,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-12-03T22:56:21.000Z","date":"2025-12-01","kind":"sale","planned":true,"acquired":false,"shares":152,"price":120.4343,"value":18306.0136,"ownership":{"direct":false,"nature":"Brother"},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $120.0694 to $121.0081, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) of this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F8","text":"Charles F. 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The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (3) of this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"Wilder Grace Willis 2019 Trust, Austin Willis Trustee."}],"balance_after":2566,"source":{"system":"sec-edgar","filing":"0000905148-25-004222","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825004222/form4.xml","form_type":"4"}},{"id":982449,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-12-03T22:56:21.000Z","date":"2025-12-01","kind":"sale","planned":true,"acquired":false,"shares":152,"price":120.4343,"value":18306.0136,"ownership":{"direct":false,"nature":"Daughter"},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $120.0694 to $121.0081, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) of this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"Wilder Grace Willis 2019 Trust, Austin Willis Trustee."}],"balance_after":2570,"source":{"system":"sec-edgar","filing":"0000905148-25-004222","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825004222/form4.xml","form_type":"4"}},{"id":982448,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-12-03T22:56:21.000Z","date":"2025-12-01","kind":"sale","planned":true,"acquired":false,"shares":4,"price":121.5031,"value":486.0124,"ownership":{"direct":false,"nature":"Son"},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $121.189 to $122.00, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (3) of this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"Rooster A. Willis 2019 Trust, Austin Willis Trustee."}],"balance_after":2566,"source":{"system":"sec-edgar","filing":"0000905148-25-004222","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825004222/form4.xml","form_type":"4"}},{"id":982447,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-12-03T22:56:21.000Z","date":"2025-12-01","kind":"sale","planned":true,"acquired":false,"shares":152,"price":120.4343,"value":18306.0136,"ownership":{"direct":false,"nature":"Son"},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $120.0694 to $121.0081, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) of this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"Rooster A. Willis 2019 Trust, Austin Willis Trustee."}],"balance_after":2570,"source":{"system":"sec-edgar","filing":"0000905148-25-004222","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825004222/form4.xml","form_type":"4"}},{"id":982446,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-12-03T22:56:21.000Z","date":"2025-12-01","kind":"sale","planned":true,"acquired":false,"shares":14,"price":121.5031,"value":1701.0434,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $121.189 to $122.00, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (3) of this Form 4."}],"balance_after":182076,"source":{"system":"sec-edgar","filing":"0000905148-25-004222","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825004222/form4.xml","form_type":"4"}},{"id":982445,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-12-03T22:56:21.000Z","date":"2025-12-01","kind":"sale","planned":true,"acquired":false,"shares":573,"price":120.4343,"value":69008.8539,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $120.0694 to $121.0081, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) of this Form 4."}],"balance_after":182090,"source":{"system":"sec-edgar","filing":"0000905148-25-004222","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825004222/form4.xml","form_type":"4"}},{"id":1007213,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-11-05T21:13:38.000Z","date":"2025-11-03","kind":"sale","planned":true,"acquired":false,"shares":315,"price":127.5879,"value":40190.1885,"ownership":{"direct":false,"nature":"Brother"},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"This transaction was executed in multiple trades at prices ranging from $127.255 to $128.025, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (4) of this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"Charles F. Willis V 2019 Trust, Austin Willis Trustee."}],"balance_after":23222,"source":{"system":"sec-edgar","filing":"0000905148-25-003779","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825003779/form4.xml","form_type":"4"}},{"id":1007212,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-11-05T21:13:38.000Z","date":"2025-11-03","kind":"sale","planned":true,"acquired":false,"shares":189,"price":126.3662,"value":23883.2118,"ownership":{"direct":false,"nature":"Brother"},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $126.125 to $127.12, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (3) of this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"Charles F. Willis V 2019 Trust, Austin Willis Trustee."}],"balance_after":23537,"source":{"system":"sec-edgar","filing":"0000905148-25-003779","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825003779/form4.xml","form_type":"4"}},{"id":1007211,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-11-05T21:13:38.000Z","date":"2025-11-03","kind":"sale","planned":true,"acquired":false,"shares":396,"price":125.7427,"value":49794.1092,"ownership":{"direct":false,"nature":"Brother"},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $125.11 to $126.10, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) of this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"Charles F. Willis V 2019 Trust, Austin Willis Trustee."}],"balance_after":23726,"source":{"system":"sec-edgar","filing":"0000905148-25-003779","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825003779/form4.xml","form_type":"4"}},{"id":1007210,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-11-05T21:13:38.000Z","date":"2025-11-03","kind":"sale","planned":true,"acquired":false,"shares":315,"price":127.5879,"value":40190.1885,"ownership":{"direct":false,"nature":"Daughter"},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"This transaction was executed in multiple trades at prices ranging from $127.255 to $128.025, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (4) of this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"Wilder Grace Willis 2019 Trust, Austin Willis Trustee."}],"balance_after":2722,"source":{"system":"sec-edgar","filing":"0000905148-25-003779","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825003779/form4.xml","form_type":"4"}},{"id":1007209,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-11-05T21:13:38.000Z","date":"2025-11-03","kind":"sale","planned":true,"acquired":false,"shares":189,"price":126.3662,"value":23883.2118,"ownership":{"direct":false,"nature":"Daughter"},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $126.125 to $127.12, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (3) of this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"Wilder Grace Willis 2019 Trust, Austin Willis Trustee."}],"balance_after":3037,"source":{"system":"sec-edgar","filing":"0000905148-25-003779","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825003779/form4.xml","form_type":"4"}},{"id":1007208,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-11-05T21:13:38.000Z","date":"2025-11-03","kind":"sale","planned":true,"acquired":false,"shares":396,"price":125.7427,"value":49794.1092,"ownership":{"direct":false,"nature":"Daughter"},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $125.11 to $126.10, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) of this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"Wilder Grace Willis 2019 Trust, Austin Willis Trustee."}],"balance_after":3226,"source":{"system":"sec-edgar","filing":"0000905148-25-003779","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825003779/form4.xml","form_type":"4"}},{"id":1007207,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-11-05T21:13:38.000Z","date":"2025-11-03","kind":"sale","planned":true,"acquired":false,"shares":315,"price":127.5879,"value":40190.1885,"ownership":{"direct":false,"nature":"Son"},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"This transaction was executed in multiple trades at prices ranging from $127.255 to $128.025, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (4) of this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Rooster A. Willis 2019 Trust, Austin Willis Trustee."}],"balance_after":2722,"source":{"system":"sec-edgar","filing":"0000905148-25-003779","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825003779/form4.xml","form_type":"4"}},{"id":1007206,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-11-05T21:13:38.000Z","date":"2025-11-03","kind":"sale","planned":true,"acquired":false,"shares":189,"price":126.3662,"value":23883.2118,"ownership":{"direct":false,"nature":"Son"},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $126.125 to $127.12, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (3) of this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Rooster A. Willis 2019 Trust, Austin Willis Trustee."}],"balance_after":3037,"source":{"system":"sec-edgar","filing":"0000905148-25-003779","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825003779/form4.xml","form_type":"4"}},{"id":1007205,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-11-05T21:13:38.000Z","date":"2025-11-03","kind":"sale","planned":true,"acquired":false,"shares":396,"price":125.7427,"value":49794.1092,"ownership":{"direct":false,"nature":"Son"},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $125.11 to $126.10, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) of this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Rooster A. 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The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (4) of this Form 4."}],"balance_after":182663,"source":{"system":"sec-edgar","filing":"0000905148-25-003779","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825003779/form4.xml","form_type":"4"}},{"id":1007203,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-11-05T21:13:38.000Z","date":"2025-11-03","kind":"sale","planned":true,"acquired":false,"shares":714,"price":126.3662,"value":90225.4668,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $126.125 to $127.12, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (3) of this Form 4."}],"balance_after":183853,"source":{"system":"sec-edgar","filing":"0000905148-25-003779","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825003779/form4.xml","form_type":"4"}},{"id":1007202,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-11-05T21:13:38.000Z","date":"2025-11-03","kind":"sale","planned":true,"acquired":false,"shares":1496,"price":125.7427,"value":188111.0792,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $125.11 to $126.10, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) of this Form 4."}],"balance_after":184567,"source":{"system":"sec-edgar","filing":"0000905148-25-003779","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825003779/form4.xml","form_type":"4"}},{"id":1025512,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-10-03T20:20:47.000Z","date":"2025-10-01","kind":"sale","planned":true,"acquired":false,"shares":1,"price":137.12,"value":137.12,"ownership":{"direct":false,"nature":"Brother"},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"Charles F. 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The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (3) of this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"Charles F. 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The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) of this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"Charles F. 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The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (3) of this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Wilder Grace Willis 2019 Trust, Austin Willis Trustee."}],"balance_after":3623,"source":{"system":"sec-edgar","filing":"0000905148-25-003503","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825003503/form4.xml","form_type":"4"}},{"id":1025507,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-10-03T20:20:47.000Z","date":"2025-10-01","kind":"sale","planned":true,"acquired":false,"shares":260,"price":135.7028,"value":35282.728,"ownership":{"direct":false,"nature":"Daughter"},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $135.06 to $136.05, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) of this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Wilder Grace Willis 2019 Trust, Austin Willis Trustee."}],"balance_after":4262,"source":{"system":"sec-edgar","filing":"0000905148-25-003503","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825003503/form4.xml","form_type":"4"}},{"id":1025506,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-10-03T20:20:47.000Z","date":"2025-10-01","kind":"sale","planned":true,"acquired":false,"shares":1,"price":137.12,"value":137.12,"ownership":{"direct":false,"nature":"Son"},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Rooster A. Willis 2019 Trust, Austin Willis Trustee."}],"balance_after":3622,"source":{"system":"sec-edgar","filing":"0000905148-25-003503","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825003503/form4.xml","form_type":"4"}},{"id":1025505,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-10-03T20:20:47.000Z","date":"2025-10-01","kind":"sale","planned":true,"acquired":false,"shares":639,"price":136.3549,"value":87130.7811,"ownership":{"direct":false,"nature":"Son"},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $136.06 to $136.87, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (3) of this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Rooster A. 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The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) of this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Rooster A. 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The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (3) of this Form 4."}],"balance_after":186065,"source":{"system":"sec-edgar","filing":"0000905148-25-003503","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825003503/form4.xml","form_type":"4"}},{"id":1025501,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-10-03T20:20:47.000Z","date":"2025-10-01","kind":"sale","planned":true,"acquired":false,"shares":983,"price":135.7028,"value":133395.8524,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $135.06 to $136.05, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) of this Form 4."}],"balance_after":188480,"source":{"system":"sec-edgar","filing":"0000905148-25-003503","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825003503/form4.xml","form_type":"4"}},{"id":1048555,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-09-05T01:31:10.000Z","date":"2025-09-02","kind":"sale","planned":true,"acquired":false,"shares":237,"price":145.6123,"value":34510.1151,"ownership":{"direct":false,"nature":"Brother"},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $145.37 to $146.035, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (3) of this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"Charles F. Willis V 2019 Trust, Austin Willis Trustee."}],"balance_after":25022,"source":{"system":"sec-edgar","filing":"0000905148-25-003293","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825003293/form4.xml","form_type":"4"}},{"id":1048554,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-09-05T01:31:10.000Z","date":"2025-09-02","kind":"sale","planned":true,"acquired":false,"shares":663,"price":144.9809,"value":96122.3367,"ownership":{"direct":false,"nature":"Brother"},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $144.335 to $145.33, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) of this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"Charles F. 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The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (3) of this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Wilder Grace Willis 2019 Trust, Austin Willis Trustee."}],"balance_after":4522,"source":{"system":"sec-edgar","filing":"0000905148-25-003293","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825003293/form4.xml","form_type":"4"}},{"id":1048552,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-09-05T01:31:10.000Z","date":"2025-09-02","kind":"sale","planned":true,"acquired":false,"shares":663,"price":144.9809,"value":96122.3367,"ownership":{"direct":false,"nature":"Daughter"},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $144.335 to $145.33, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) of this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Wilder Grace Willis 2019 Trust, Austin Willis Trustee."}],"balance_after":4759,"source":{"system":"sec-edgar","filing":"0000905148-25-003293","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825003293/form4.xml","form_type":"4"}},{"id":1048551,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-09-05T01:31:10.000Z","date":"2025-09-02","kind":"sale","planned":true,"acquired":false,"shares":237,"price":145.6123,"value":34510.1151,"ownership":{"direct":false,"nature":"Son"},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $145.37 to $146.035, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (3) of this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Rooster A. 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The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) of this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Rooster A. 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The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (3) of this Form 4."}],"balance_after":189463,"source":{"system":"sec-edgar","filing":"0000905148-25-003293","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825003293/form4.xml","form_type":"4"}},{"id":1048548,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-09-05T01:31:10.000Z","date":"2025-09-02","kind":"sale","planned":true,"acquired":false,"shares":2504,"price":144.9809,"value":363032.1736,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on June 3, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $144.335 to $145.33, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) of this Form 4."}],"balance_after":190359,"source":{"system":"sec-edgar","filing":"0000905148-25-003293","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825003293/form4.xml","form_type":"4"}},{"id":1075319,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-08-05T20:29:28.000Z","date":"2025-08-01","kind":"sale","planned":true,"acquired":false,"shares":100,"price":137.6,"value":13760.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on September 5, 2024."}],"balance_after":192863,"source":{"system":"sec-edgar","filing":"0000905148-25-002731","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825002731/form4.xml","form_type":"4"}},{"id":1075318,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-08-05T20:29:28.000Z","date":"2025-08-01","kind":"sale","planned":true,"acquired":false,"shares":200,"price":136.08,"value":27216.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on September 5, 2024."}],"balance_after":192963,"source":{"system":"sec-edgar","filing":"0000905148-25-002731","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825002731/form4.xml","form_type":"4"}},{"id":1075317,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-08-05T20:29:28.000Z","date":"2025-08-01","kind":"sale","planned":true,"acquired":false,"shares":2118,"price":135.3456,"value":286661.9808,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on September 5, 2024."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"This transaction was executed in multiple trades at prices ranging from $134.92 to $135.83, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (4) of this Form 4."}],"balance_after":193163,"source":{"system":"sec-edgar","filing":"0000905148-25-002731","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825002731/form4.xml","form_type":"4"}},{"id":1075316,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-08-05T20:29:28.000Z","date":"2025-08-01","kind":"sale","planned":true,"acquired":false,"shares":300,"price":134.545,"value":40363.5,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on September 5, 2024."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $133.905 to $134.90, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (3) of this Form 4."}],"balance_after":195281,"source":{"system":"sec-edgar","filing":"0000905148-25-002731","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825002731/form4.xml","form_type":"4"}},{"id":1075315,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-08-05T20:29:28.000Z","date":"2025-08-01","kind":"sale","planned":true,"acquired":false,"shares":600,"price":132.9565,"value":79773.9,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","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 on September 5, 2024."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $132.77 to $133.68, inclusive. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) of this Form 4."}],"balance_after":195581,"source":{"system":"sec-edgar","filing":"0000905148-25-002731","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825002731/form4.xml","form_type":"4"}},{"id":1093095,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-07-03T21:55:35.000Z","date":"2025-07-01","kind":"sale","planned":true,"acquired":false,"shares":3450,"price":140.01,"value":483034.5,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 5, 2024."}],"balance_after":196181,"source":{"system":"sec-edgar","filing":"0000905148-25-002342","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018164/000090514825002342/form4.xml","form_type":"4"}},{"id":1123622,"issuer":{"id":399,"kind":"organization","name":"WILLIS LEASE FINANCE CORP","symbol":"WLFC"},"owners":[{"id":1819,"kind":"person","name":"Willis Austin Chandler","position":1,"cik":"0001453104","reported_name":"Willis Austin Chandler","relationship":{"director":true,"officer":true,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-06-04T20:34:21.000Z","date":"2025-06-03","kind":"gift","planned":true,"acquired":false,"shares":113,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F7","text":"Gift of shares from Austin C. 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