Form 8-K WILLIS LEASE FINANCE For: Sep 16

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September 22, 2026 7:12 AM EDT

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

______________________________________________________________________

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

______________________________________________________________________

Date of Report (Date of earliest event reported):September 16, 2026

Willis Lease Finance Corporation

(Exact Name of Registrant as Specified in Charter)

Delaware

001-15369

68-0070656

(State or Other Jurisdiction
of Incorporation)

(Commission File
Number)

(I.R.S. Employer
Identification Number)

4700 Lyons Technology Parkway

Coconut Creek, FL 33073

(Address of Principal Executive Offices) (Zip Code)

Registrant’s telephone number, including area code: (561) 349-9989

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class

Trading Symbol

Name of exchange on which registered

Common Stock, $0.01 par value per share

WLFC

Nasdaq Global Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Item 3.02 Unregistered Sales of Equity Securities.

On September 16, 2026, Willis Lease Finance Corporation (the “Company”) entered into a Series B Preferred Stock Purchase Agreement (the “Purchase Agreement”) with the Development Bank of Japan Inc. (“DBJ”). Pursuant to the Purchase Agreement, the Company has agreed to issue in a private placement 1,750,000 shares of newly issued Series B Preferred Stock, par value $0.01 per share, at a purchase price of $20.00 per share.

The closing of the private placement is expected to occur by the end of the third quarter 2026, subject to the satisfaction of customary closing conditions. The gross proceeds to the Company from the private placement are expected to be approximately $35 million, before estimated offering fees and expenses payable by the Company.

The Series B Preferred Stock will pay an 8.09% annual dividend and will have a liquidation preference of $20.00 per share. The Certificate of Designations, Preferences and Certain Rights and Limitations of the Series B Preferred Stock as well as a more detailed summary of the terms of the Series B Preferred Stock will be disclosed in the Company’s Form 8-K under Item 5.03 to be filed following closing of the private placement.

The Series B Preferred Stock will not be registered under the Securities Act of 1933, as amended (the “Securities Act”) in reliance on the exemption from registration provided by Section 4(a)(2) of the Securities Act. The Company relied on this exemption from registration in entering into the Purchase Agreement and the Company will rely upon this exemption from registration in issuing such securities based in part on representations made by DBJ in the Purchase Agreement. The Company did not engage in any form of general solicitation or general advertising in connection with the private placement. The securities may not be offered or sold in the United States absent registration or an applicable exemption from registration requirements. Neither this Current Report on Form 8-K, nor the exhibit attached hereto, is an offer to sell or the solicitation of an offer to buy the securities described herein.

A copy of the news release is attached hereto as Exhibit 99.1

Forward Looking Statements

Except for historical information, the matters discussed herein contain forward-looking statements that involve risks and uncertainties. Do not unduly rely on forward-looking statements, which give only expectations about the future and are not guarantees. Forward-looking statements speak only as of the date they are made, and we undertake no obligation to update them to reflect any change in the Company’s expectations or any change in events, conditions, or circumstances on which the forward-looking statement is based, except as required by law.

The Company’s actual results may differ materially from the results discussed in forward-looking statements. Factors that might cause such a difference include, but are not limited to: the effects on the airline industry and the global economy of events such as war, terrorist activity and the COVID-19 pandemic; changes in oil prices, rising inflation and other disruptions to world markets; trends in the airline industry and the Company’s ability to capitalize on those trends, including growth rates of markets and other economic factors; risks associated with owning and leasing jet engines and aircraft; the Company’s ability to successfully negotiate equipment purchases, sales and leases, to collect outstanding amounts due and to control costs and expenses; changes in interest rates and availability of capital, both to the Company and its customers; the Company’s ability to continue to meet changing customer demands; regulatory changes affecting airline operations, aircraft maintenance, accounting standards and taxes; the market value of engines and other assets in the Company’s portfolio; and risks detailed in the Company’s Annual Report on Form 10-K and other continuing and current reports filed with the Securities and Exchange Commission. It is advisable, however, to consult any further disclosures the Company makes on related subjects in such filings. These statements constitute the Company’s cautionary statements under the Private Securities Litigation Reform Act of 1995.

Item 9.01 Exhibits.

(d) Exhibits:


Exhibit No.						Description
99.1						News Release issued by Willis Lease Finance Corporation dated September 22, 2026 .
104						Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned duly authorized officer.

Dated: September 22, 2026