Oceanhawk Acquisition Corp.
OHAC- Exchange
- Nasdaq
- Industry
- Blank Checks
- SEC CIK
- 0002090787
No open-market purchases or sales by Oceanhawk Acquisition Corp. insiders were filed in the last 90 days; 31 institutions reported holding it in 13F filings for Q2 2026, worth $140.3M in total; no superinvestor holds it.
Holders of 5% or more of OHAC
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Oceanhawk Acquisition Corp., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Highbridge Capital Management LLC | 13G | 7.90%1.50M shares | New | Aug 14, 20261 filing | Aug 14, 2026 | SEC |
| Goldman Sachs Group Inc | 13G | 7.80%1.48M shares | New | Aug 11, 20261 filing | Aug 11, 2026 | SEC |
| Adage Capital Management, L.P. | 13G | 5.68%1.07M shares | New | Aug 12, 20261 filing | Aug 12, 2026 | SEC |
| Magnetar Financial LLC | 13G | 5.21%986.3K shares | New | Aug 13, 20261 filing | Aug 13, 2026 | SEC |
| Polar Asset Management Partners Inc. | 13G | 5.00%950.0K shares | New | Aug 14, 20261 filing | Aug 14, 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
5 Schedule 13D and 13G filings on Oceanhawk Acquisition Corp., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Aug 14, 20269:54 PM ET | Polar Asset Management Partners Inc. | 13G | 5.00%950.0K shares | New | Jun 30, 2026 | SEC |
| Aug 14, 202612:33 PM ET | Highbridge Capital Management LLC | 13G | 7.90%1.50M shares | New | Jun 30, 2026 | SEC |
| Aug 13, 20266:18 AM ET | Magnetar Financial LLCand 3 others | 13G | 5.21%986.3K shares | New | Jun 30, 2026 | SEC |
| Aug 12, 202612:04 PM ET | Adage Capital Management, L.P.and 2 others | 13G | 5.68%1.07M shares | New | Jun 30, 2026 | SEC |
| Aug 11, 20268:41 PM ET | Goldman Sachs Group Incand 1 other | 13G | 7.80%1.48M shares | New | Jun 30, 2026 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Oceanhawk Acquisition Corp. shares.
No Form 144 notices for Oceanhawk Acquisition Corp. are on file.