Form 6-K KNOT Offshore Partners For: Aug 26

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

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FORM 6-K

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REPORT OF FOREIGN PRIVATE ISSUER

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

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of August 2026

Commission File Number: 001-35866

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KNOT Offshore Partners LP

(Translation of registrant’s name into English)

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2 Queen’s Cross,

Aberdeen, AB15 4YB

United Kingdom

(Address of principal executive office)

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

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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 August 26, 2026.

ITEM 2– EXHIBITS

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

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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.

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