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IRON SCHEDULE 13D/A: SEC filing

An amendment to a Schedule 13D was

Filed with the SEC on · accession 0001193125-26-432228

IRON filed a SCHEDULE 13D/A (schedule 13d/a) with the SEC on Oct 26, 2026. A report the company filed with the SEC (the US market regulator). The stock moved +4.2% by the first close after the filing.

Summary of the filing

An amendment to a Schedule 13D was filed for Disc Medicine, Inc. (IRON), but the filing text provided contains only the EDGAR directory listing and no substantive details about the transaction or ownership change.

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Key details

Subject companyDisc Medicine, Inc.

How IRON stock reacted

Close before

$74.51

Oct 23, 2026

First close after

+4.23%

$77.66

5 trading days

+8.50%

$80.84

Since filing

+6.21%

$79.14

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Frequently asked questions

What did IRON file with the SEC on Oct 26, 2026?

IRON filed a SCHEDULE 13D/A (SEC filing). An amendment to a Schedule 13D was filed for Disc Medicine, Inc. (IRON), but the filing text provided contains only the EDGAR directory listing and no substantive details about the transaction or ownership change.

How do I read a SCHEDULE 13D/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 13D/A (schedule 13d/a): A report the company filed with the SEC (the US market regulator).

How did IRON stock react to this filing?

IRON closed at $74.51 before the filing and $77.66 on Oct 26, 2026 (+4.23%). Five trading days later: $80.84 (+8.50%).

Other IRON SEC filings

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