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Stocks/MSB/SEC Filings/SCHEDULE 13G/A Nov 9, 2026

MSB SCHEDULE 13G/A: SEC filing

Horizon Kinetics Asset Management LLC

Filed with the SEC on Nov 9, 2026 · accession 0001056823-26-000023

MSB filed a SCHEDULE 13G/A (schedule 13g/a) with the SEC on Nov 9, 2026. Horizon Kinetics Asset Management LLC filed an amended Schedule 13G reporting beneficial ownership of 3,279,971 Units of Beneficial Interest (25.0%) of Mesabi Trust as of September 30, 2026. The stock moved -0.7% by the first close after the filing.

Summary of the filing

Horizon Kinetics Asset Management LLC filed an amended Schedule 13G reporting beneficial ownership of 3,279,971 Units of Beneficial Interest (25.0%) of Mesabi Trust as of September 30, 2026. The filing is a passive investment disclosure under Rule 13d-1(b).

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Key details

Units of Beneficial Interest beneficially owned$3.3M
Filer / beneficial owner of 3,279,971 units (25.0%)Horizon Kinetics Asset Management LLC
Parent company of horizon kinetics asset management llc; may be deemed beneficial ownerHorizon Kinetics Holding Corporation
Issuer / subject companyMesabi Trust
General counselJay Kesslen

How MSB stock reacted

Close before

$17.25

Nov 6, 2026

First close after

-0.70%

$17.13

5 trading days

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Since filing

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Frequently asked questions

What did MSB file with the SEC on Nov 9, 2026?

MSB filed a SCHEDULE 13G/A (SEC filing). Horizon Kinetics Asset Management LLC filed an amended Schedule 13G reporting beneficial ownership of 3,279,971 Units of Beneficial Interest (25.0%) of Mesabi Trust as of September 30, 2026. The filing is a passive investment disclosure under Rule 13d-1(b).

How do I read a SCHEDULE 13G/A?

A report the company filed with the SEC (the US market regulator). Start with the summary, then the key amounts and names. Compare it with the company’s earlier filings.

Why are SEC filings important?

Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A SCHEDULE 13G/A (schedule 13g/a): A report the company filed with the SEC (the US market regulator).

How did MSB stock react to this filing?

MSB closed at $17.25 before the filing and $17.13 on Nov 9, 2026 (-0.70%).

Other MSB SEC filings

  • 8-K · SEC filingNov 2, 2026
  • 8-K · Dividend changeOct 15, 2026

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Source: SEC EDGAR filing 0001056823-26-000023. The summary and key details are extracted by SEPT from the filing and may contain errors. Price reaction uses daily closing prices. Not financial advice.