Iron Horse Acquisition II Corp.
IRHOU- Exchange
- Nasdaq
- Industry
- Services-Business Services, NEC
- SEC CIK
- 0002051985
No open-market purchases or sales by Iron Horse Acquisition II Corp. insiders were filed in the last 90 days; 10 institutions reported holding it in 13F filings for Q2 2026, worth $27.0M in total; no superinvestor holds it.
Holders of 5% or more of IRHOU
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Iron Horse Acquisition II Corp., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Linden Capital L.P. | 13G | 6.40%1.50M shares | New | Dec 23, 20251 filing | Dec 23, 2025 | SEC |
| Magnetar Financial LLC | 13G | 5.11%1.50M shares | New | Feb 17, 20261 filing | Feb 17, 2026 | SEC |
| MMCAP International Inc. SPC | 13G/A | 5.10%1.50M shares | −0.60 ppfrom 5.70% | Dec 19, 20253 filings | May 11, 2026 | SEC |
| LMR Partners LLP | 13G | 5.10%1.50M shares | New | Feb 17, 20261 filing | Feb 17, 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
6 Schedule 13D and 13G filings on Iron Horse Acquisition II Corp., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| May 11, 20265:30 PM ET | MMCAP International Inc. SPCand 1 other | 13G/A | 5.10%1.50M shares | −0.60 ppfrom 5.70% | Mar 31, 2026 | SEC |
| Feb 17, 20269:24 AM ET | LMR Partners LLPand 7 others | 13G | 5.10%1.50M shares | New | Dec 31, 2025 | SEC |
| Feb 17, 20268:37 AM ET | Magnetar Financial LLCand 3 others | 13G | 5.11%1.50M shares | New | Dec 31, 2025 | SEC |
| Feb 13, 202610:10 AM ET | MMCAP International Inc. SPCand 1 other | 13G/A | 5.70%1.50M shares | −0.20 ppfrom 5.90% | Dec 31, 2025 | SEC |
| Dec 23, 20255:55 PM ET | Linden Capital L.P.and 3 others | 13G | 6.40%1.50M shares | New | Dec 18, 2025 | SEC |
| Dec 19, 20252:31 PM ET | MMCAP International Inc. SPCand 1 other | 13G | 5.90%1.50M shares | New | Dec 18, 2025 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Iron Horse Acquisition II Corp. shares.
No Form 144 notices for Iron Horse Acquisition II Corp. are on file.