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): November 7, 2022

New Mountain Guardian IV BDC, L.L.C.

(Exact name of Registrant as specified in its charter)

Delaware	814-01528	88-1377220
(State or other jurisdiction of incorporation)	(Commission File Number)	(IRS Employer Identification No.)

1633 Broadway, 48th Floor,
New York, New York	10019
(Address of principal executive offices)	(Zip Code)

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

None

(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 (see General Instruction A.2. below):

¨ 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:

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

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. o

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On November 7, 2022, New Mountain Guardian IV BDC, L.L.C.’s (the “Company”) board of directors appointed John R. Kline as the Chief Executive Officer of the Company, effective January 1, 2023, in addition to continuing in his role as President and as Chairman of the board of directors. Mr. Kline joined New Mountain Capital, L.L.C. (“New Mountain Capital”) in 2008 and has been a senior executive within New Mountain Capital's credit effort since its inception that year.

Also on November 7, 2022, the Company’s board of directors received and accepted the resignation of Robert A. Hamwee as Chief Executive Officer, to become effective January 1, 2023. Mr. Hamwee will continue to serve as a senior member of the Investment Committee of New Mountain Finance Advisers BDC, L.L.C., the Company’s investment adviser (the “Investment Adviser”) and as a Managing Director of New Mountain Capital. The Investment Adviser believes that its management team, with the overall support of New Mountain Capital’s team of 215 professionals, is adequately staffed to support the Company.

SIGNATURE

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 Guardian IV BDC, L.L.C.
Date: November 10, 2022	By:	/s/ Joseph Hartswell
		Name:	Joseph Hartswell
		Title:	Chief Compliance Officer and Corporate Secretary