Cayson Acquisition Corp has 7 Schedule 13D or 13G filings on record since 2025-08-13. 5 holders' latest filing reports 5% or more of ordinary shares, par value $0.0001 per share. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Feis Equities LLC | 9.83% | 769,472 | SCHEDULE 13G/A, 2026-02-02 | 2025-12-31 |
| W.R. Berkley Corporation | 9.4% | 997,282 | SCHEDULE 13G/A, 2026-05-07 | 2026-03-31 |
| Mizuho Financial Group, Inc. | 9% | 704,500 | SCHEDULE 13G/A, 2025-08-13 | 2025-06-30 |
| Wolverine Asset Management, LLC | 5.21% | 275,700 | SCHEDULE 13G/A, 2026-04-20 | 2026-03-31 |
| Polar Asset Management Partners Inc. | 5.2% | 275,000 | SCHEDULE 13G, 2026-05-15 | 2026-03-31 |
| Kerry Propper | 0% | 0 | SCHEDULE 13G/A, 2026-05-15 | 2026-03-31 |
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-08-13 | Mizuho Financial Group, Inc. | 9% | SCHEDULE 13G/A |
| 2025-10-23 | Feis Equities LLC | 5.18% | SCHEDULE 13G |
| 2026-02-02 | Feis Equities LLC | 9.83% | SCHEDULE 13G/A |
| 2026-04-20 | Wolverine Asset Management, LLC | 5.21% | SCHEDULE 13G/A |
| 2026-05-07 | W.R. Berkley Corporation | 9.4% | SCHEDULE 13G/A |
| 2026-05-15 | Kerry Propper | 0% | SCHEDULE 13G/A |
| 2026-05-15 | Polar Asset Management Partners Inc. | 5.2% | SCHEDULE 13G |
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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.