Cayson Acquisition Corp
CAPN- Exchange
- Nasdaq
- Industry
- Blank Checks
- SEC CIK
- 0002024203
No open-market purchases or sales by Cayson Acquisition Corp insiders were filed in the last 90 days; 17 institutions reported holding it in 13F filings for Q2 2026, worth $31.9M in total; no superinvestor holds it.
Holders of 5% or more of CAPN
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Cayson Acquisition Corp, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Berkley W R Corp | 13G | 10.40%763.3K shares | New | Apr 8, 20251 filing | Apr 8, 2025 | SEC |
| Mizuho Financial Group Inc | 13G/A | 9.00%704.5K shares | −0.60 ppfrom 9.60% | Feb 13, 20253 filings | Aug 13, 2025 | SEC |
| Wolverine Asset Management LLC | 13G/A | 7.03%515.1K shares | +1.87 ppfrom 5.16% | Jan 31, 20252 filings | May 1, 2025 | SEC |
| Feis Equities LLC | 13G | 5.18%406.0K shares | New | Oct 23, 20251 filing | Oct 23, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
8 Schedule 13D and 13G filings on Cayson Acquisition Corp, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Oct 23, 20259:30 AM ET | Feis Equities LLCand 1 other | 13G | 5.18%406.0K shares | New | Oct 14, 2025 | SEC |
| Aug 13, 20256:17 AM ET | Mizuho Financial Group Inc | 13G/A | 9.00%704.5K shares | −0.60 ppfrom 9.60% | Jun 30, 2025 | SEC |
| May 13, 20256:20 AM ET | Mizuho Financial Group Inc | 13G/A | 9.60%704.0K shares | +1.40 ppfrom 8.20% | Mar 31, 2025 | SEC |
| May 1, 20254:04 PM ET | Wolverine Asset Management LLCand 4 others | 13G/A | 7.03%515.1K shares | +1.87 ppfrom 5.16% | Mar 31, 2025 | SEC |
| Apr 8, 20255:29 PM ET | Berkley W R Corpand 1 other | 13G | 10.40%763.3K shares | New | Mar 31, 2025 | SEC |
| Feb 13, 20253:51 PM ET | AQR Capital Management LLCand 2 others | 13G/A | 4.57%357.9K shares | –Below 5% | Dec 31, 2024 | SEC |
| Feb 13, 20258:53 AM ET | Mizuho Financial Group Inc | 13G/A | 8.20%645.0K shares | – | Dec 31, 2024 | SEC |
| Jan 31, 20259:15 AM ET | Wolverine Asset Management LLCand 4 others | 13G | 5.16%403.7K shares | New | Dec 31, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Cayson Acquisition Corp shares.
No Form 144 notices for Cayson Acquisition Corp are on file.