WISeSat.Space Holdings Corp.: 5%+ holders

WISeSat.Space Holdings Corp. has 2 Schedule 13D or 13G filings on record since 2026-10-08. 1 holder's latest filing reports 5% or more of ordinary shares, no par value. Each figure below is the holder's own, as filed, with the filing linked.

Holders

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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

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Purpose of Transaction (Item 4)

WISeQey Corp.

On October 9, 2026, Quantisimo Corp. ("Quantisimo"), a special purpose vehicle established by WISeQey and SEALSQ entered into an Agreement and Plan of Merger, dated as of October 8, 2026 (the "Quantisimo BCA"), with GigCapital8 Corp. ("GigCapital8"), a special purpose acquisition company, and Quantisimo Holdings Corp., a newly formed British Virgin Islands holding company ("PubCo"). The transactions contemplated by the Business Combination Agreement are referred to as the " Quantisimo Business Combination." Under the Quantisimo BCA, a subsidiary of PubCo will merge with and into GigCapital8, with GigCapital8 surviving as a wholly owned subsidiary of PubCo. Immediately thereafter, a second subsidiary of PubCo will merge with and into Quantisimo, with Quantisimo surviving as a wholly owned subsidiary of PubCo. PubCo's ordinary shares are expected to be listed on the Nasdaq Capital Market under the symbol "QSMO". Before closing, WISeQey and SEALSQ will contribute to Quantisimo their interests in Miraex SA, SEALCOIN AG, WeCan Group SA and WISeSat. At closing the shareholders of Quantisimo, which are WISeQey and SEALSQ, will receive an aggregate of 66,610,000 PubCo shares, consisting of ordinary shares and Class F shares; all Class F shares, including those to be issued to GigCapital8's sponsor for a portion of its GigCapital8 ordinary shares, will together carry 49.999999% of PubCo's total voting power; each GigCapital8 Class A ordinary share will be exchanged for one PubCo …The first part of Item 4 of the SCHEDULE 13D/A filed 2026-10-14; the filing has the rest

Timeline

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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