# EDGAR Filing Document

**Accession Number:** 0001018164
**File Stem:** 0002070403-26-000009
**Filing Date:** 2026-3
**Character Count:** 6784
**Document Hash:** f6d34e21f1b1234a8e8bce319f6c07d1
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0002070403-26-000009.hdr.sgml**: 20260318

**ACCESSION NUMBER**: 0002070403-26-000009

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260316

**FILED AS OF DATE**: 20260318

**DATE AS OF CHANGE**: 20260318

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Dameron Clifton
- **CENTRAL INDEX KEY:** 0002070403

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-15369
- **FILM NUMBER:** 26766851

**MAIL ADDRESS:**
- **STREET 1:** C/O WILLIS LEASE FINANCE CORPORATION
- **STREET 2:** 4700 LYONS TECHNOLOGY PARKWAY
- **CITY:** COCONUT CREEK
- **STATE:** FL
- **ZIP:** 33073
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** WILLIS LEASE FINANCE CORP
- **CENTRAL INDEX KEY:** 0001018164
- **STANDARD INDUSTRIAL CLASSIFICATION:** WHOLESALE-MACHINERY, EQUIPMENT & SUPPLIES [5080]
- **ORGANIZATION NAME:** 07 Trade & Services
- **EIN:** 680070656
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 4700 LYONS TECHNOLOGY PARKWAY
- **CITY:** COCONUT CREEK
- **STATE:** FL
- **ZIP:** 33073
- **BUSINESS PHONE:** 5613499989

**MAIL ADDRESS:**
- **STREET 1:** 4700 LYONS TECHNOLOGY PARKWAY
- **CITY:** COCONUT CREEK
- **STATE:** FL
- **ZIP:** 33073

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

[ ] Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Dameron Clifton<br><sub>(Last) (First) (Middle)</sub><br>4700 LYONS TECHNOLOGY PARKWAY<br><sub>(Street)</sub><br>COCONUT CREEK, FL 33073<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-03-16 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [ ] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_SVP, GC & Corporate Secretary_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>WILLIS LEASE FINANCE CORP [ WLFC ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock | 2026-03-16 |  | M |  | 2635<sup>(1)</sup> | A | <sup>(1)</sup> | 15156 | D |  |
| Common Stock | 2026-03-16 |  | F |  | 213<sup>(2)</sup> | D | $167.18 | 14943 | D |  |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Performance-based Restricted Stock Award | <sup>(1)</sup> | 2026-03-16 |  | M |  |  | 2635<sup>(3)</sup> | <sup>(1)</sup> | <sup>(1)</sup> | Common Stock | 2635<sup>(3)</sup> | <sup>(1)</sup> | 0<sup>(3)</sup> | D |  |

---

### Footnotes:

(1) 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.

(2) Return to Issuer of previously restricted shares to satisfy withholding tax liability.

(3) 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 2,229 PSAs of the 100% target amount reported in the Form 4 filed by the Reporting Person on January 6, 2025 were forfeited.

**Signature:** /s/ Z. Clifton Dameron IV  
**Date:** 2026-03-18

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**