Horizon Space Acquisition II Corp.: 5%+ holders

As of November 10, 2026, Horizon Space Acquisition II Corp. has Schedule 13D or 13G filings on record, none whose latest reports a stake of 5% or more. 10 filings are on record since July 31, 2025 (Schedule 13G/A, August 13, 2026).

ATW SPAC MANAGEMENT LLC also filed stake reports on 3 other companies ↓

Sell to companies like Horizon Space Acquisition II Corp? Enter your website and see 10 with a filed reason to buy from you this month. Free.

Your website Find my buyers

Opens in a new tab. No signup.

Key facts

• Filing 2026-08-13 · Reporting person: Atw Spac Management LLC · Sole voting: 0 · Shared voting: 0 · Sole dispositive: 0 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-08-13
• Filing 2026-08-06 · Reporting person: W. R. Berkley Corporation · Sole voting: 0 · Shared voting: 0 · Sole dispositive: 0 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-08-06
• Filing 2026-06-17 · Reporting person: Horizon Space Acquisition II Sponsor Corp. · Sole voting: 0 · Shared voting: 0 · Sole dispositive: 0 · Shared dispositive: 0 · SCHEDULE 13D/A, 2026-06-17
• Filed 2026-05-14 · Holder: Mizuho Financial Group, Inc. · Percent: 0% · SCHEDULE 13G/A
• Filed 2026-02-27 · Holder: Wolverine Asset Management, LLC · Percent: 0% · SCHEDULE 13G/A

Horizon Space Acquisition II Corp. has 10 Schedule 13D or 13G filings on record since 2025-07-31. No holder's latest filing reports 5% or more. Each figure below is the holder's own, as filed, with the filing linked.

Holders

Swipe the table sideways to see every column.

Holding shares or following this stake? See who's behind Horizon Space Acquisition II Corp. and the warning signs.

See Horizon Space Acquisition II Corp.'s free Snapshot Watch Horizon Space Acquisition II Corp.: email me the next time it files something

Free to see. No signup.

Keep reading

More on Horizon Space Acquisition II Corp. and the records around it.

Companies that share a holder

• ATW SPAC MANAGEMENT LLC also filed stake reports on 3 other companies: ARC Group Acquisition I Corp. (Aug 2026), Charlton Aria Acquisition Corporation (Nov 2025)
• Boothbay Fund Management LLC also filed stake reports on 5 other companies: Blaize Holdings, Inc. (Nov 2025), Sequans Communications S.A. (Nov 2025), Forte Biosciences, Inc. (Aug 2025)
• Bank of Montreal also filed stake reports on 49 other companies: Akari Therapeutics Plc (Aug 2026), Alarm.com Holdings, Inc. (Aug 2026), North American Construction Group Ltd. (Aug 2026)

Want the whole picture on Horizon Space Acquisition II Corp.?

Example from a real report (our sample on Target): “Target eliminated approximately 1,800 corporate positions, with around 1,000 employees receiving layoff notices and the remainder accounted for by eliminating open roles.” Source: NBC News

A Full Report on Horizon Space Acquisition II Corp.: verified, sourced, every claim cited, ready in a few minutes. See pricing.

What the Full Report on Horizon Space Acquisition II Corp. covers

1. The Short Answer

2. Which Company This Is

3. What They Do, And How The Money Works

4. Who Runs It, And How To Reach Them

5. The Money: Funding, Valuation, Runway

6. Who Pays Them, And Who They Are Up Against

7. Warning Bells

8. Sources

   13 cited sources found

Plus the sections for what you are deciding, which you pick after ordering.

Order Full ReportSee a sample report

A real finished report, first screen. Opens in a new tab.

Voting and dispositive power, as filed

Swipe the table sideways to see every column.

The latest filing identifies Horizon Space Acquisition II Corp. by CUSIP G4627B129 and gives its principal executive office as 1412 Broadway, 21st Floor, Suite 21V, New York, NY 10018 (SCHEDULE 13G/A, 2026-08-13).

Source of funds (Item 3)

The information set forth in Items 4 and 5 of this Schedule 13D are hereby incorporated by reference into this Item 3.Mingyu Li, SCHEDULE 13D/A, 2026-06-17

Purpose of Transaction (Item 4)

Mingyu Li

Item 4 of the Schedule 13D is amended and supplemented as follows: Consummation of the Business Combination On June 12, 2026, HSPT consummated the previously announced business combination pursuant to the Business Combination Agreement, dated as of May 9, 2025 ( the "Business Combination Agreement"), with SL Science Holding Limited, a Cayman Islands exempted company ("PubCo"), CW Mega Limited, a Cayman Islands exempted company and a wholly-owned subsidiary of PubCo ("Merger Sub I"), WW Century Limited, a Cayman Islands exempted company and a wholly-owned subsidiary of PubCo ("Merger Sub II"), and SL Bio Ltd., a Cayman Islands exempted company limited by shares ("SL Bio"). Pursuant to the Business Combination Agreement, (i) Merger Sub I merged with and into HSPT, with HSPT as the surviving entity and a wholly-owned subsidiary of PubCo (the "First Merger"), and (ii) following the First Merger, Merger Sub II merged with and into SL Bio, with SL Bio as the surviving entity and a wholly-owned subsidiary of PubCo (the "Second Merger," and together with the First Merger and the other transactions contemplated by the Business Combination Agreement, the "Business Combination"). Upon the consummation of the Business Combination, each of HSPT and SL Bio became a subsidiary of PubCo, and the shareholders of HSPT and SL Bio received ordinary shares of PubCo, par value $0.0001 per share ("PubCo Ordinary Shares"), as consideration and become shareholders of PubCo. Immediately …The first part of Item 4 of the SCHEDULE 13D/A filed 2026-06-17; the filing has the rest

Timeline

Swipe the table sideways to see every column.

Also on the record for Horizon Space Acquisition II Corp.

Swipe the table sideways to see every column.

Tools for this story

Each opens in a new tab, filled in for Horizon Space Acquisition II Corp.. With no account yet, you sign up free and land on the result.

• Get an alert when Horizon Space Acquisition II Corp. is mentioned again
• Find former Horizon Space Acquisition II Corp. employees to interview
• Verify a claim or statistic

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.

All recent stakesThat week's stakes