X0202 SCHEDULE 13D/A 0001033309 XXXXXXXX LIVE 38 Common Stock, $0.01 par value per share 04/01/2026 false 0001018164 970646105 WILLIS LEASE FINANCE CORP

4700 Lyons Technology Parkway Coconut Creek FL 33073

Charles F. Willis, IV (415) 408-4700 c/o Willis Lease Finance Corporation 4700 Lyons Technology Parkway Coconut Creek FL 33073 Y CFW Partners, L.P. PF OO DE 0 2134148 0 2134148 2134148 N 27.47 PN 0001033309 WILLIS CHARLES F IV PF OO X1 1211255 2148292 1037671 2148292 3359547 N 43.24 IN See Item 5 0001453104 Willis Austin Chandler PF OO X1 222205 646895 130584 27992 869100 N 11.19 IN Common Stock, $0.01 par value per share WILLIS LEASE FINANCE CORP 4700 Lyons Technology Parkway Coconut Creek FL 33073 The Schedule 13D filed with the Securities and Exchange Commission on December 11, 2000 (the "Initial 13D") by CFW Partners, the Trust and Mr. Charles F. Willis, IV with respect to the Common Stock, par value $0.01 per share (the "Shares"), issued by Willis Lease Finance Corporation, a Delaware corporation (the "Issuer"), as amended on August 28, 2013, October 1, 2013, July 7, 2015, December 23, 2015, March 23, 2016, May 20, 2016, June 8, 2016, October 6, 2016, April 4, 2018, September 13, 2018, April 1, 2019, June 27, 2019, September 16, 2019, November 4, 2019, February 10, 2020, March 10, 2020, March 16, 2020, April 6, 2020, August 26, 2020, September 17, 2020, March 16, 2021, March 23, 2021, June 25, 2021, August 11, 2021, September 7, 2021, April 5, 2022, November 17, 2022, January 18, 2023, March 14, 2023, March 16, 2023, March 29, 2023, April 14, 2023, November 17, 2023, April 3, 2024, August 28, 2024, April 3, 2025, and November 18, 2025 (together with the Initial 13D, the "13D"), is hereby amended as set forth below. Capitalized terms not defined herein have the meanings ascribed to them in the 13D. Item 5(a) of the 13D is hereby amended to add the following: As of April 3, 2026, the Reporting Persons may be deemed to beneficially own the following Shares: CFW Partners: 2,134,148 Charles F. Willis, IV: 3,359,547 Austin C. Willis: 869,100 Item 5(b) of the 13D is hereby amended to add the following: As of April 3, 2026, the Reporting Persons had the power to vote, dispose of, or direct the disposition of the following Shares, or had the right to acquire such power over such Shares (with respect to stock options held by Charles F. Willis, IV): CFW Partners: Sole Voting Power: 0 Shared Voting Power: 2,134,148 Sole Dispositive Power: 0 Shared Dispositive Power: 2,134,148 Total beneficially owned: 2,134,148 Charles F. Willis, IV: Sole Voting Power: 1,211,255* Shared Voting Power: 2,148,292 Sole Dispositive Power: 1,037,671* Shared Dispositive Power: 2,148,292 Total beneficially owned: 3,359,547* *These amounts include 300,000 Shares underlying stock options held by Charles F. Willis, IV. Austin C. Willis: Sole Voting Power: 222,205 Shared Voting Power: 646,895 Sole Dispositive Power: 130,584 Shared Dispositive Power: 27,992 Total beneficially owned: 869,100 Item 5(c) of the 13D is hereby amended to add the following: Exhibit 2 hereto sets forth descriptions of transactions with respect to the Shares effected during the past sixty days by the Reporting Persons and is incorporated herein by reference. No person(s) other than the Reporting Persons is known to have the right to receive or the power to direct the receipt of dividends from, or proceeds from the sale of, the Shares beneficially owned by the Reporting Persons. Not applicable. Item 6 of the 13D is hereby amended to add the following: On March 24, 2026, Mr. Austin Chandler Willis entered into a new Rule 10b5-1 trading plan (the "10b5-1 Plan") with Merrill Lynch, Pierce, Fenner & Smith Incorporated ("Merrill Lynch"). Pursuant to the 10b5-1 Plan, Merrill Lynch may sell up to 15,184 Shares on behalf of Mr. Austin Chandler Willis, starting on July 1, 2026. The 10b5-1 Plan will terminate automatically on the earlier of September 30, 2026, the date on which all 15,184 Shares have been sold under the 10b5-1 Plan, and the date the 10b5-1 Plan is otherwise terminated pursuant to its terms. Item 7 is hereby amended and supplemented by adding the following exhibits as the last exhibit of Item 7 of the 13D: 1. Joint Filing Agreement 2. Schedule of Transactions for Item 5(c) CFW Partners, L.P. /s/ Charles F. Willis, IV 04/03/2026 WILLIS CHARLES F IV /s/ Charles F. Willis, IV 04/03/2026 Willis Austin Chandler /s/ Austin Chandler Willis 04/03/2026