Ribbon Acquisition Corp.
RIBB- Exchange
- Nasdaq
- Industry
- Blank Checks
- SEC CIK
- 0002035016
No open-market purchases or sales by Ribbon Acquisition Corp. insiders were filed in the last 90 days; 20 institutions reported holding it in 13F filings for Q2 2026, worth $29.4M in total; no superinvestor holds it.
Holders of 5% or more of RIBB
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Ribbon Acquisition Corp., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Mizuho Financial Group Inc | 13G/A | 9.00%582.0K shares | 0.00 ppfrom 9.00% | May 13, 20252 filings | Aug 13, 2025 | SEC |
| Polar Asset Management Partners Inc. | 13G | 7.70%400.0K shares | New | May 15, 20251 filing | May 15, 2025 | SEC |
| Berkley W R Corp | 13G | 6.80%437.3K shares | New | Apr 8, 20251 filing | Apr 8, 2025 | SEC |
| Wolverine Asset Management LLC | 13G | 6.35%410.9K shares | New | May 1, 20251 filing | May 1, 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
5 Schedule 13D and 13G filings on Ribbon Acquisition Corp., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Aug 13, 20256:19 AM ET | Mizuho Financial Group Inc | 13G/A | 9.00%582.0K shares | 0.00 ppfrom 9.00% | Jun 30, 2025 | SEC |
| May 15, 20257:13 AM ET | Polar Asset Management Partners Inc. | 13G | 7.70%400.0K shares | New | Mar 31, 2025 | SEC |
| May 13, 20256:05 AM ET | Mizuho Financial Group Inc | 13G | 9.00%582.0K shares | New | Mar 31, 2025 | SEC |
| May 1, 20253:11 PM ET | Wolverine Asset Management LLCand 4 others | 13G | 6.35%410.9K shares | New | Mar 31, 2025 | SEC |
| Apr 8, 20255:32 PM ET | Berkley W R Corpand 1 other | 13G | 6.80%437.3K shares | New | Mar 31, 2025 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Ribbon Acquisition Corp. shares.
No Form 144 notices for Ribbon Acquisition Corp. are on file.