Eureka Acquisition Corp
EURK- Exchange
- Nasdaq
- Industry
- Water Transportation
- SEC CIK
- 0002000410
No open-market purchases or sales by Eureka Acquisition Corp insiders were filed in the last 90 days; 13 institutions reported holding it in 13F filings for Q2 2026, worth $13.6M in total; no superinvestor holds it.
Holders of 5% or more of EURK
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Eureka Acquisition Corp, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| RLH Capital LLC | 13G/A | 9.30%295.4K shares | +2.10 ppfrom 7.20% | Feb 11, 20252 filings | Jul 7, 2025 | SEC |
| AQR Capital Management LLC | 13G/A | 5.65%179.1K shares | – | Nov 14, 20242 filings | Aug 14, 2025 | SEC |
| Barclays PLC | 13G/A | 5.23%325.0K shares | 0.00 ppfrom 5.23% | Nov 13, 20242 filings | Mar 21, 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
31 Schedule 13D and 13G filings on Eureka Acquisition Corp, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Aug 13, 20266:06 AM ET | Mizuho Financial Group Inc | 13G/A | 0.00%0 shares | −8.90 ppfrom 8.90%Below 5% | Jun 30, 2026 | SEC |
| Aug 6, 20268:36 AM ET | Berkley W R Corpand 1 other | 13G/A | 0.00%0 shares | −9.00 ppfrom 9.00%Below 5% | Jun 30, 2026 | SEC |
| Jul 14, 20264:57 PM ET | Feis Equities LLCand 1 other | 13G/A | 0.00%0 shares | −8.43 ppfrom 8.43%Below 5% | Jul 7, 2026 | SEC |
| Jul 9, 20264:57 PM ET | Wolverine Asset Management LLCand 3 others | 13G/A | 0.00%0 shares | −7.85 ppfrom 7.85%Below 5% | Jul 6, 2026 | SEC |
| Apr 7, 20264:10 PM ET | Karpus Management, Inc. | 13G/A | 4.16%200.9K shares | −2.61 ppfrom 6.77%Below 5% | Mar 31, 2026 | SEC |
| Feb 2, 202610:24 AM ET | Feis Equities LLCand 1 other | 13G/A | 8.43%285.6K shares | +0.17 ppfrom 8.26% | Dec 31, 2025 | SEC |
| Nov 14, 20254:08 PM ET | Karpus Management, Inc. | 13G | 6.77%326.8K shares | +2.49 ppfrom 4.28% | Sep 30, 2025 | SEC |
| Nov 14, 20251:54 PM ET | Vivaldi Asset Management, LLCand 3 others | 13G/A | 0.00%0 shares | –Below 5% | Sep 30, 2025 | SEC |
| Nov 13, 20252:38 PM ET | Propper Kerryand 1 other | 13G/A | 0.00%0 shares | −5.40 ppfrom 5.40%Below 5% | Sep 30, 2025 | SEC |
| Nov 10, 20256:12 PM ET | Berkley W R Corpand 1 other | 13G | 9.00%305.6K shares | New | Sep 30, 2025 | SEC |
| Aug 14, 20251:50 PM ET | AQR Capital Management LLCand 2 others | 13G/A | 5.65%179.1K shares | – | Jun 30, 2025 | SEC |
| Aug 13, 20256:32 AM ET | Mizuho Financial Group Inc | 13G/A | 8.90%550.0K shares | +0.50 ppfrom 8.40% | Jun 30, 2025 | SEC |
| Jul 7, 20258:30 PM ET | RLH Capital LLCand 1 other | 13G/A | 9.30%295.4K shares | +2.10 ppfrom 7.20% | Jun 30, 2025 | SEC |
| Jul 7, 20254:04 PM ET | Karpus Management, Inc. | 13G/A | 4.28%327.4K shares | −5.42 ppfrom 9.70%Below 5% | Jun 30, 2025 | SEC |
| Jul 3, 202512:17 PM ET | Feis Equities LLCand 1 other | 13G | 8.26%261.7K shares | New | Jul 2, 2025 | SEC |
| May 13, 20256:59 AM ET | Mizuho Financial Group Inc | 13G/A | 8.40%523.1K shares | +2.20 ppfrom 6.20% | Mar 31, 2025 | SEC |
| Mar 21, 20255:59 PM ET | Barclays PLC | 13G/A | 5.23%325.0K shares | 0.00 ppfrom 5.23% | Sep 30, 2024 | SEC |
| Feb 14, 20254:03 PM ET | Karpus Management, Inc. | 13G/A | 9.70%741.3K shares | – | Dec 31, 2024 | SEC |
| Feb 14, 20251:46 PM ET | Propper Kerryand 1 other | 13G/A | 5.40%335.0K shares | – | Dec 31, 2024 | SEC |
| Feb 13, 20259:16 AM ET | Mizuho Financial Group Inc | 13G | 6.20%384.5K shares | New | Dec 31, 2024 | SEC |
| Feb 11, 20257:11 PM ET | RLH Capital LLCand 1 other | 13G | 7.20%450.0K shares | New | Feb 11, 2025 | SEC |
| Jan 31, 20259:15 AM ET | Wolverine Asset Management LLCand 4 others | 13G | 7.85%487.3K shares | New | Dec 31, 2024 | SEC |
| Nov 14, 2024 | Vivaldi Asset Management, LLC | 13GOld format | – | New | – | SEC |
| Nov 14, 2024 | AQR Capital Management LLC | 13GOld format | – | New | – | SEC |
| Nov 13, 202410:27 AM ET | Barclays PLC | 13G | 5.23%325.0K shares | New | Sep 30, 2024 | SEC |
| Nov 13, 2024 | Cowen and Company, LLC | 13GOld format | – | New | – | SEC |
| Nov 12, 2024 | Propper Kerry | 13GOld format | – | New | – | SEC |
| Nov 12, 2024 | Harraden Circle Investments, LLC | 13G/AOld format | – | – | – | SEC |
| Oct 7, 2024 | Karpus Management, Inc. | 13GOld format | – | New | – | SEC |
| Jul 10, 2024 | Harraden Circle Investments, LLC | 13GOld format | – | New | – | SEC |
| Jul 3, 2024 | Hercules Capital Management Corp | 13DOld format | – | New | – | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Eureka Acquisition Corp shares.
No Form 144 notices for Eureka Acquisition Corp are on file.