Blue Water Acquisition Corp. III: 5%+ holders

As of November 6, 2026, 4 holders' latest Schedule 13D or 13G filings report owning 5% or more of Blue Water Acquisition Corp. III. The largest reported stake is Yorkville BW Acquisition Sponsor, LLC's, at 20.9%. 11 filings are on record since August 8, 2025 (Schedule 13D, December 2, 2025).

Picton Mahoney Asset Management also filed stake reports on 20 other companies ↓

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Key facts

• Filing 2026-10-20 · Reporting person: Picton Mahoney Asset Management · Sole voting: 1,400,000 · Shared voting: 0 · Sole dispositive: 1,400,000 · Shared dispositive: 0 · SCHEDULE 13G, 2026-10-20
• Filing 2026-08-14 · Reporting person: Harraden Circle Investments, LLC · Sole voting: 0 · Shared voting: 1,050,642 · Sole dispositive: 0 · Shared dispositive: 1,050,642 · SCHEDULE 13G/A, 2026-08-14
• Filed 2026-02-17 · Holder: Anson Funds Management LP · Percent: 9.9% · SCHEDULE 13G
• Filed 2026-02-13 · Holder: Barclays PLC · Percent: 0% · SCHEDULE 13G/A
• Filed 2025-12-08 · Holder: Harraden Circle Investments, LLC · Percent: 6.63% · SCHEDULE 13G

Blue Water Acquisition Corp. III has 11 Schedule 13D or 13G filings on record since 2025-08-08. 4 holders' latest filing reports 5% or more of class a. Each figure below is the holder's own, as filed, with the filing linked.

Holders

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More on Blue Water Acquisition Corp. III and the records around it.

Companies that share a holder

• Picton Mahoney Asset Management also filed stake reports on 20 other companies: Launch One Acquisition Corp. (Oct 2026), Pono Capital Four, Inc. (Oct 2026), Social Commerce Partners Corp (Oct 2026)
• Anson Funds Management LP also filed stake reports on 36 other companies: 22nd Century Group, Inc. (Aug 2026), Imperial Petroleum Inc. (Aug 2026), K Wave Media Ltd. (Aug 2026)
• Harraden Circle Investments, LLC also filed stake reports on 95 other companies: Calisa Acquisition Corp (Nov 2026), Texas Ventures Acquisition III Corp (Nov 2026), Columbus Acquisition Corp (Oct 2026)

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Voting and dispositive power, as filed

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The latest filing identifies Blue Water Acquisition Corp. III by CUSIP G1368E106 and gives its principal executive office as 15 E. Putnam Avenue, Suite 363, Greenwich, CT 06830 (SCHEDULE 13G, 2026-10-20).

Purpose of Transaction (Item 4)

Yorkville BW Acquisition Sponsor, LLC

Purchase Agreement On November 25, 2025, the Issuer, the Prior Sponsor, and the New Sponsor entered into a Purchase Agreement (the "Purchase Agreement"). Pursuant to the Purchase Agreement, the New Sponsor (i) purchased from the Prior Sponsor (a) 6,325,000 Class B Ordinary Shares and (b) 430,000 Private Units for an aggregate purchase price of $7,200,000, and (ii) upon closing, became the sponsor of the Issuer (together, the "Purchase"). The transactions under the Purchase Agreement closed on November 25, 2025. As a condition to consummation of the Purchase, all of the then-existing members of the Board of Directors (the "Prior Board") and all then-existing officers of the Issuer resigned, and the New Sponsor designated (i) a new board of directors, which was elected immediately prior to the closing of the Purchase by the Prior Sponsor as the then-sole holder of the Class B Ordinary Shares in accordance with the terms of the Issuer's amended and restated memorandum and articles of association, and (ii) a new management team, which was appointed immediately prior to the closing of the Purchase by the Prior Board, effective as of the closing of the Purchase. Upon the closing of the Purchase, the New Sponsor became the sponsor of the Issuer and the new directors and officers designated by the New Sponsor assumed their positions. In addition, and as described below, upon the closing of the Purchase, in accordance with the terms of the Joinder to become a party to the …The first part of Item 4 of the SCHEDULE 13D filed 2025-12-02; the filing has the rest

Timeline

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Questions about who owns Blue Water Acquisition Corp. III

Who owns Blue Water Acquisition Corp. III?

On this page, 4 holders' latest ownership filings report 5% or more of Blue Water Acquisition Corp. III: Yorkville BW Acquisition Sponsor, LLC (20.9%, Schedule 13D, filed 2025-12-02), Anson Funds Management LP (9.9%, Schedule 13G, filed 2026-02-17), Magnetar Financial LLC (5.77%, Schedule 13G, filed 2025-08-08) and Picton Mahoney Asset Management (5.39%, Schedule 13G, filed 2026-10-20).

Who are the largest shareholders of Blue Water Acquisition Corp. III?

By the share each holder's latest filing reports, the largest holders of Blue Water Acquisition Corp. III on this page are Yorkville BW Acquisition Sponsor, LLC (20.9%), Anson Funds Management LP (9.9%) and Magnetar Financial LLC (5.77%).

When did Yorkville BW Acquisition Sponsor, LLC buy into Blue Water Acquisition Corp. III?

The filings give report dates, not purchase dates. The earliest filing from Yorkville BW Acquisition Sponsor, LLC on this page is the Schedule 13D, filed 2025-12-02, reporting 20.9%.

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%); 11 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.

Also on the record for Blue Water Acquisition Corp. III

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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.

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