X0508 4 2026-01-02 0001018164 WILLIS LEASE FINANCE CORP WLFC 0001453104 Willis Austin Chandler 4700 LYONS TECHNOLOGY PARKWAY COCONUT CREEK FL 33073 true true true Chief Executive Officer true Common Stock 2026-01-02 4 S 0 700 132.5657 D 176973 D Common Stock 2026-01-02 4 S 0 2600 133.4549 D 174373 D Common Stock 2026-01-02 4 S 0 100 134.8 D 174273 D Common Stock 2026-01-02 4 A 0 14912 134.12 A 189185 D Common Stock 2026-01-02 4 F 0 1039 134.12 D 188146 D Common Stock 1822 I Son Common Stock 1822 I Daughter Common Stock 22322 I Brother Common Stock 3449 I Austin C. Willis 2019 Irrevocable Trust Common Stock 8692 I CFW V 2016 Trust Common Stock 232715 I 2019 Willis Family Trust Common Stock 405488 I CFW Partners Performance-based Restricted Stock Award 2026-01-02 4 A 0 22368 134.12 A Common Stock 22368 22368 D 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. 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. 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. Restrictive Stock Grant vesting over three years. Return to issuer of previously restricted shares to satisfy withholding tax liability. Rooster A. Willis 2019 Trust, Austin Willis Trustee. Wilder Grace Willis 2019 Trust, Austin Willis Trustee. Charles F. Willis V 2019 Trust, Austin Willis Trustee. Austin C. Willis 2019 Irrevocable Trust, Mary Willis Trustee. Charles F. Willis V 2016 Trust, Austin Willis Trustee. 2019 Willis Family Trust, Austin Willis Trustee. Includes 213,415 shares having shared voting power of CFW Partners with Charles F. Willis IV. Shared voting power of CFW Partners with Charles F. Willis IV. 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. /s/ Austin C. Willis 2026-01-06