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LONA SCHEDULE 13D/A: SEC filing

An amendment to a Schedule 13D was

Filed with the SEC on · accession 0001655566-26-000004

LONA filed a SCHEDULE 13D/A (schedule 13d/a) with the SEC on Oct 28, 2026. A report the company filed with the SEC (the US market regulator). The stock moved +1.4% by the first close after the filing.

Summary of the filing

An amendment to a Schedule 13D was filed regarding LeonaBio, Inc., but the filing text contains only EDGAR directory listing metadata and no substantive disclosure content.

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Key details

Subject companyLeonaBio, Inc.

How LONA stock reacted

Close before

$4.89

Oct 27, 2026

First close after

+1.43%

$4.96

5 trading days

-2.45%

$4.77

Since filing

-9.71%

$4.42

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Frequently asked questions

What did LONA file with the SEC on Oct 28, 2026?

LONA filed a SCHEDULE 13D/A (SEC filing). An amendment to a Schedule 13D was filed regarding LeonaBio, Inc., but the filing text contains only EDGAR directory listing metadata and no substantive disclosure content.

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 LONA stock react to this filing?

LONA closed at $4.89 before the filing and $4.96 on Oct 28, 2026 (+1.43%). Five trading days later: $4.77 (-2.45%).

Other LONA SEC filings

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