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): March 2, 2026

New Mountain Net Lease Trust

(Exact name of registrant as specified in its charter)

Maryland

000-56701

99-6897976

(State or Other

Jurisdiction of Incorporation)

(Commission File Number)

(I.R.S. Employer

Identification No.)

1633 Broadway, 48th Floor

New York, NY 10019

(Address of Principal Executive Offices) (Zip Code)

Registrant’s telephone number, including area code: (212) 720-0300

Not Applicable

(Former Name or 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 to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act: None

Title of each class	Trading Symbol(s)	Name of each exchange on which registered

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 x

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. ¨

Item 3.02

Unregistered Sales of Equity Securities.

In connection with the continuous private offering of New Mountain Net Lease Trust, a Maryland statutory trust (the “Company”), on March 2, 2026, the Company sold an aggregate of 1,796,297 of its common shares of beneficial interest, par value $0.01 per share (the “Shares”), for aggregate consideration of approximately $35.96 million at the most recently determined net asset value per share. The offer and sale of the Shares was exempt from the registration provisions of the Securities Act of 1933, as amended, by virtue of Section 4(a)(2) and Rule 506 of Regulation D promulgated thereunder.

The following table details the Shares sold:

Title of Securities	Number of Shares Sold		Aggregate Consideration
Class E Common Shares		2,440	$	50,000
Class F Common Shares		21,663	$	435,000
Class I Common Shares		1,772,194	$	35,479,328

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 hereunto duly authorized.

	New Mountain Net Lease Trust

Date: March 4, 2026
	By:	/s/ Kellie Steele
	Name:	Kellie Steele
	Title:	Chief Financial Officer

New Mountain Net Lease Trust 8-K