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SYRE SCHEDULE 13D/A: SEC filing

An amendment to a Schedule 13D was

Filed with the SEC on · accession 0001104659-26-115087

SYRE filed a SCHEDULE 13D/A (schedule 13d/a) with the SEC on Oct 9, 2026. A report the company filed with the SEC (the US market regulator). The stock moved +7.2% by the first close after the filing.

Summary of the filing

An amendment to a Schedule 13D was filed regarding Spyre Therapeutics, Inc. The filing text available consists only of the EDGAR directory listing and does not contain substantive details of the amendment.

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Key details

Subject companySpyre Therapeutics, Inc.

How SYRE stock reacted

Close before

$79.90

Oct 8, 2026

First close after

+7.25%

$85.69

5 trading days

+0.25%

$80.10

Since filing

+29.99%

$103.86

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Frequently asked questions

What did SYRE file with the SEC on Oct 9, 2026?

SYRE filed a SCHEDULE 13D/A (SEC filing). An amendment to a Schedule 13D was filed regarding Spyre Therapeutics, Inc. The filing text available consists only of the EDGAR directory listing and does not contain substantive details of the amendment.

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 SYRE stock react to this filing?

SYRE closed at $79.90 before the filing and $85.69 on Oct 9, 2026 (+7.25%). Five trading days later: $80.10 (+0.25%).

Other SYRE SEC filings

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