UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of December 2025

Commission File Number: 001-35866

KNOT Offshore Partners LP

(Translation of registrant’s name into English)

2 Queen’s Cross,

Aberdeen, AB15 4YB

United Kingdom

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F ☒ Form 40-F ☐

ITEM 1–INFORMATION CONTAINED IN THIS FORM 6-K REPORT

Attached as Exhibit 99.1 is a copy of the press release of KNOT Offshore Partners LP dated December 415, 2025.

ITEM 2– EXHIBITS

The following exhibits are filed as a part of this report:



ExhibitNumber		Exhibit Description
99.1		Press release dated December 415, 2025.

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, thereunto duly authorized.

5

	KNOT OFFSHORE PARTNERS LP

Date: December 4, 2025	By:	/s/ Derek Lowe
Date: December 15, 2025	By:	/s/ Derek Lowe
		Name: Derek Lowe	~~Derek Lowe~~
		Title: Chief Executive Officer and Chief Financial Officer	~~Chief Executive Officer and Chief Financial Officer~~

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