Astaris Capital Management LLP → KNOT Offshore Partners LP KNOP

This Schedule 13D Amendment No. 5 is being filed in connection with the matters discussed below. On July 28, 2026, Astaris Capital Management LLP delivered a letter to the Issuer (the "July 2026 Letter") regarding, among other things, the potential appointment of additional independent directors to the board of directors of the Issuer (the "Board"). The foregoing description of the July 2026 Letter contained in this Item 4 is not intended to be complete and is qualified in its entirety by reference to the July 2026 Letter, a copy of which is attached as Exhibit B to this Schedule 13D. The Reporting Persons acquired the securities reported herein for investment purposes and intend to review their investments in the Issuer on a continuing basis. Subject to various factors, including but not limited to the Issuer's financial position and strategic direction, price levels of the Common Units, conditions in the securities markets, various laws and regulations applicable to the Issuer and companies in its industry and the Reporting Persons' ownership in the Issuer, and general economic and industry conditions, the Reporting Persons may in the future take actions with respect to their investment in the Issuer as they deem appropriate, including changing their current intentions, with respect to any or all matters required to be disclosed in this Schedule 13D. The Reporting Persons may, from time to time, acquire, or cause affiliates to acquire, additional Common Units or other securities of the Issuer (including any combination or derivative thereof), dispose, or cause affiliates to dispose, of some or all of their Common Units or other securities of the Issuer or continue to hold, or cause affiliates to hold, Common Units or other securities of the Issuer (or any combination or derivative thereof). In addition, on October 31, 2025, Knutsen NYK Offshore Tankers AS, a Norway limited company ("KNOT"), delivered a non-binding offer (the "Offer Letter") to the Board, to acquire all of the issued and outstanding Common Units that are not already beneficially owned by KNOT in exchange for cash. The Reporting Persons have discussed and/or may discuss from time to time, with management, the Board and any of its committees, other shareholders of the Issuer and/or other third parties regarding the July 2026 Letter and other matters relating to board composition and management, the Offer Letter or any subsequent proposed or negotiated transaction, and the proposed terms contained therein, and the Issuer's business, operations, strategy (including with respect to capital allocation policies and procedures), plans and prospects and governance matters generally and in relation to the Reporting Persons' investment in the Issuer and requesting information from the Issuer related thereto. Except as described in this Schedule 13D, none of the Reporting Persons has any present plans or proposals that relate to or would result in any of the actions described in Item 4 of this Schedule 13D, although, the Reporting Persons, at any time and from time to time, may review, reconsider and change their position and/or purpose and/or develop such plans and may from time to time consider pursuing or proposing such matters with advisors, the Issuer or other persons.