Blue Water Acquisition Corp. IV
BWIV- Exchange
- NYSE
- Industry
- Blank Checks
- SEC CIK
- 0002082847
No open-market purchases or sales by Blue Water Acquisition Corp. IV insiders were filed in the last 90 days; 35 institutions reported holding it in 13F filings for Q2 2026, worth $98.5M in total; no superinvestor holds it.
Holders of 5% or more of BWIV
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Blue Water Acquisition Corp. IV, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Blue Water Acquisition IV LLC | 13G | 27.80%5.07M shares | New | Apr 15, 20261 filing | Apr 15, 2026 | SEC |
| Adage Capital Management, L.P. | 13G | 8.38%1.13M shares | New | May 13, 20261 filing | May 13, 2026 | SEC |
| Magnetar Financial LLC | 13G | 7.07%950.0K shares | New | May 13, 20261 filing | May 13, 2026 | SEC |
| Wealthspring Capital LLC | 13G | 5.20%675.8K shares | New | Apr 9, 20261 filing | Apr 9, 2026 | 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
4 Schedule 13D and 13G filings on Blue Water Acquisition Corp. IV, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| May 13, 20269:29 AM ET | Magnetar Financial LLCand 3 others | 13G | 7.07%950.0K shares | New | Mar 31, 2026 | SEC |
| May 13, 20269:09 AM ET | Adage Capital Management, L.P.and 2 others | 13G | 8.38%1.13M shares | New | Mar 31, 2026 | SEC |
| Apr 15, 20268:17 PM ET | Blue Water Acquisition IV LLCand 1 other | 13G | 27.80%5.07M shares | New | Mar 19, 2026 | SEC |
| Apr 9, 20264:43 PM ET | Wealthspring Capital LLCand 1 other | 13G | 5.20%675.8K shares | New | Mar 31, 2026 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Blue Water Acquisition Corp. IV shares.
No Form 144 notices for Blue Water Acquisition Corp. IV are on file.