As of November 7, 2026, 2 holders' latest Schedule 13D or 13G filings report owning 5% or more of KNOT Offshore Partners LP. The largest reported stake is Knutsen NYK Offshore Tankers AS', at 36.9%. 9 filings are on record since August 5, 2025 (Schedule 13D/A, November 4, 2026).
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Key facts
- · Reporting person: Knutsen NYK Offshore Tankers AS · Sole voting: 14,000,914 · Shared voting: 0 · Sole dispositive: 14,000,914 · Shared dispositive: 0 · SCHEDULE 13D/A, 2026-11-04
- · Reporting person: Astaris Capital Management LLP · Sole voting: 0 · Shared voting: 2,741,926 · Sole dispositive: 0 · Shared dispositive: 2,741,926 · SCHEDULE 13D/A, 2026-07-30
- · Holder: Astaris Capital Management LLP · Percent: 8.1% · SCHEDULE 13D/A
- · Holder: Astaris Capital Management LLP · Percent: 8% · SCHEDULE 13D/A
- · Holder: Knutsen NYK Offshore Tankers AS · Percent: 32.5% · SCHEDULE 13D/A
KNOT Offshore Partners LP has 9 Schedule 13D or 13G filings on record since 2025-08-05. 2 holders' latest filing reports 5% or more of common units representing limited partner interests. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Knutsen NYK Offshore Tankers AS | 36.9% | 14,000,914 | SCHEDULE 13D/A, 2026-11-04 | 2026-11-03 |
| Astaris Capital Management LLP | 8.1% | 2,741,926 | SCHEDULE 13D/A, 2026-07-30 | 2026-07-28 |
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| Knutsen NYK Offshore Tankers AS | 14,000,914 | 0 | 14,000,914 | 0 | SCHEDULE 13D/A, 2026-11-04 |
| NYK Holding (Europe) B.V. | 0 | 14,000,914 | 0 | 14,000,914 | SCHEDULE 13D/A, 2026-11-04 |
| Nippon Yusen Kabushiki Kaisha | 0 | 14,000,914 | 0 | 14,000,914 | SCHEDULE 13D/A, 2026-11-04 |
| TS Shipping Invest AS | 0 | 14,000,914 | 0 | 14,000,914 | SCHEDULE 13D/A, 2026-11-04 |
| Seglem Holding AS | 0 | 14,000,914 | 0 | 14,000,914 | SCHEDULE 13D/A, 2026-11-04 |
| Seglem Trygve | 0 | 14,000,914 | 0 | 14,000,914 | SCHEDULE 13D/A, 2026-11-04 |
| Astaris Capital Management LLP | 0 | 2,741,926 | 0 | 2,741,926 | SCHEDULE 13D/A, 2026-07-30 |
| Astaris Capital Management (UK) Limited | 0 | 2,741,926 | 0 | 2,741,926 | SCHEDULE 13D/A, 2026-07-30 |
| Astaris Capital Management (Cayman) Limited | 0 | 2,741,926 | 0 | 2,741,926 | SCHEDULE 13D/A, 2026-07-30 |
| Astaris Special Situations Master Fund Limited | 0 | 1,705,438 | 0 | 1,705,438 | SCHEDULE 13D/A, 2026-07-30 |
| Martin Beck | 0 | 2,741,926 | 0 | 2,741,926 | SCHEDULE 13D/A, 2026-07-30 |
The latest filing identifies KNOT Offshore Partners LP by CUSIP Y48125101 and gives its principal executive office as 2 Queen's Cross, Aberdeen (SCHEDULE 13D/A, 2026-11-04).
Source of funds (Item 3)
The funds used for the acquisition of the Common Units beneficially owned by the Reporting Persons came from the working capital of private funds and managed account clients advised by Astaris Capital Management LLP. No borrowed funds were used to purchase the Common Units of the Issuer other than any borrowed funds used for working capital purposes in the ordinary course of business.Astaris Capital Management LLP, SCHEDULE 13D/A, 2026-07-30
Purpose of Transaction (Item 4)
Astaris Capital Management LLP
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 …The first part of Item 4 of the SCHEDULE 13D/A filed 2026-07-30; the filing has the rest
Knutsen NYK Offshore Tankers AS
The information contained in Item 3 above is incorporated herein by reference. KNOT acquired its Common Units (including any Common Units issuable upon conversion of the Class B Units and Series A Preferred Units) for investment purposes and (in the case of the original acquisition of the Subordinated Units) in order to effect the IPO. Each of the Reporting Persons at any time and from time to time may acquire additional Common Units or dispose of any or all of Common Units that it owns depending upon an ongoing evaluation of the investment in the Common Units, prevailing market conditions, other investment opportunities, other investment considerations and/or other factors. Under the Limited Liability Company Agreement of the General Partner, dated February 20, 2013 (the "General Partner LLC Agreement"), KNOT has the right to designate the individuals that serve on the board of directors of the General Partner. The General Partner, in turn, has the right to appoint three of the seven directors of the Partnership. Through KNOT's right to appoint the board of directors of the General Partner and the General Partner's right to appoint three members of the board of directors of the Partnership (the "Board"), KNOT and, indirectly, the other Reporting Persons, have the ability to influence the management, policies and control of the Partnership with the aim of increasing the value of the Partnership, and thus of the Reporting Persons' investment. The Reporting Persons …The first part of Item 4 of the SCHEDULE 13D/A filed 2026-11-04; the filing has the rest
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-08-05 | Astaris Capital Management LLP | 6.5% | SCHEDULE 13G/A |
| 2025-11-03 | Knutsen NYK Offshore Tankers AS | 29.2% | SCHEDULE 13D/A |
| 2025-12-04 | Astaris Capital Management LLP | 6.9% | SCHEDULE 13D/A |
| 2026-03-20 | Knutsen NYK Offshore Tankers AS | 29.3% | SCHEDULE 13D/A |
| 2026-06-16 | Knutsen NYK Offshore Tankers AS | 32.5% | SCHEDULE 13D/A |
| 2026-06-23 | Astaris Capital Management LLP | 8% | SCHEDULE 13D/A |
| 2026-07-06 | Astaris Capital Management LLP | 8.1% | SCHEDULE 13D/A |
| 2026-07-30 | Astaris Capital Management LLP | 8.1% | SCHEDULE 13D/A |
| 2026-11-04 | Knutsen NYK Offshore Tankers AS | 36.9% | SCHEDULE 13D/A |
Questions about who owns KNOT Offshore Partners LP
Who owns KNOT Offshore Partners LP?
On this page, 2 holders' latest ownership filings report 5% or more of KNOT Offshore Partners LP: Knutsen NYK Offshore Tankers AS (36.9%, Schedule 13D/A, filed 2026-11-04) and Astaris Capital Management LLP (8.1%, Schedule 13D/A, filed 2026-07-30).
Who are the largest shareholders of KNOT Offshore Partners LP?
By the share each holder's latest filing reports, the largest holders of KNOT Offshore Partners LP on this page are Knutsen NYK Offshore Tankers AS (36.9%) and Astaris Capital Management LLP (8.1%).
When did Knutsen NYK Offshore Tankers AS buy into KNOT Offshore Partners LP?
The filings give report dates, not purchase dates. The earliest filing from Knutsen NYK Offshore Tankers AS on this page is the Schedule 13D/A, filed 2025-11-03, reporting 29.2%; its latest, Schedule 13D/A filed 2026-11-04, reports 36.9%. That earliest filing is itself an amendment, which updates an earlier report.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 9 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.