Yorkville Acquisition Corp.
MCGA- Exchange
- Nasdaq
- Industry
- Finance Services
- SEC CIK
- 0002064658
No open-market purchases or sales by Yorkville Acquisition Corp. insiders were filed in the last 90 days; 54 institutions reported holding it in 13F filings for Q2 2026, worth $153.6M in total; no superinvestor holds it.
Holders of 5% or more of MCGA
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Yorkville Acquisition Corp., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Yorkville Acquisition Sponsor LLC | 13D | 25.88%6.10M shares | New | Jul 3, 20251 filing | Jul 3, 2025 | SEC |
| Berkley W R Corp | 13G | 9.20%1.65M shares | New | May 8, 20261 filing | May 8, 2026 | SEC |
| Mizuho Financial Group Inc | 13G/A | 8.80%1.57M shares | +1.60 ppfrom 7.20% | May 14, 20262 filings | Aug 13, 2026 | SEC |
| Decagon Asset Management LLP | 13G | 5.81%1.04M shares | New | Nov 20, 20251 filing | Nov 20, 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
12 Schedule 13D and 13G filings on Yorkville Acquisition Corp., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Aug 13, 20266:38 AM ET | Mizuho Financial Group Inc | 13G/A | 8.80%1.57M shares | +1.60 ppfrom 7.20% | Jun 30, 2026 | SEC |
| May 15, 20261:29 PM ET | Anson Funds Management LPand 5 others | 13G/A | 0.00%0 shares | −9.90 ppfrom 9.90%Below 5% | Mar 31, 2026 | SEC |
| May 14, 20266:00 PM ET | Harraden Circle Investments, LLCand 7 others | 13G/A | 0.00%0 shares | −9.04 ppfrom 9.04%Below 5% | Mar 31, 2026 | SEC |
| May 14, 20266:21 AM ET | Mizuho Financial Group Inc | 13G | 7.20%1.29M shares | New | Mar 31, 2026 | SEC |
| May 8, 20269:09 AM ET | Berkley W R Corpand 1 other | 13G | 9.20%1.65M shares | New | Mar 31, 2026 | SEC |
| Feb 17, 202610:55 AM ET | Anson Funds Management LPand 5 others | 13G/A | 9.90%1.77M shares | +1.60 ppfrom 8.30% | Dec 31, 2025 | SEC |
| Nov 25, 20254:17 PM ET | Anson Funds Management LPand 5 others | 13G/A | 8.30%1.47M shares | −1.60 ppfrom 9.90% | Sep 30, 2025 | SEC |
| Nov 20, 20255:16 PM ET | Decagon Asset Management LLPand 1 other | 13G | 5.81%1.04M shares | New | Sep 30, 2025 | SEC |
| Nov 14, 20252:37 PM ET | Anson Funds Management LPand 5 others | 13G/A | 9.90%1.77M shares | +1.60 ppfrom 8.30% | Sep 30, 2025 | SEC |
| Nov 14, 20259:00 AM ET | Harraden Circle Investments, LLCand 7 others | 13G/A | 9.04%1.61M shares | – | Sep 30, 2025 | SEC |
| Aug 14, 20259:51 PM ET | Anson Funds Management LPand 5 others | 13G/A | 8.30%1.28M shares | – | Jun 30, 2025 | SEC |
| Jul 3, 20259:55 PM ET | Yorkville Acquisition Sponsor LLCand 8 others | 13D | 25.88%6.10M shares | New | Jun 26, 2025 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Yorkville Acquisition Corp. shares.
No Form 144 notices for Yorkville Acquisition Corp. are on file.