Mesabi Trust
MSB- Exchange
- NYSE
- Industry
- Mineral Royalty Traders
- SEC CIK
- 0000065172
No open-market purchases or sales by Mesabi Trust insiders were filed in the last 90 days; 62 institutions reported holding it in 13F filings for Q2 2026, worth $167.0M in total; no superinvestor holds it.
Holders of 5% or more of MSB
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Mesabi Trust, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Horizon Kinetics Asset Management LLC | 13G/A | 21.70%2.84M shares | – | Feb 13, 20251 filing | Feb 13, 2025 | SEC |
| Valueworks LLC | 13G/A | 5.23%685.8K shares | – | Aug 14, 20251 filing | Aug 14, 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
2 Schedule 13D and 13G filings on Mesabi Trust, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Aug 14, 20256:21 PM ET | Valueworks LLCand 1 other | 13G/A | 5.23%685.8K shares | – | Jun 30, 2025 | SEC |
| Feb 13, 202510:51 AM ET | Horizon Kinetics Asset Management LLC | 13G/A | 21.70%2.84M shares | – | Dec 31, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Mesabi Trust shares.
No Form 144 notices for Mesabi Trust are on file.