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ADXN SCHEDULE 13D/A: SEC filing

An amendment to a Schedule 13D was

Filed with the SEC on · accession 0001104659-26-105480

ADXN filed a SCHEDULE 13D/A (schedule 13d/a) with the SEC on Sep 4, 2026. An amendment to a Schedule 13D was filed for Addex Therapeutics Ltd., indicating a change in a major shareholder's ownership position or intentions. The stock moved -1.6% by the first close after the filing.

Summary of the filing

An amendment to a Schedule 13D was filed for Addex Therapeutics Ltd., indicating a change in a major shareholder's ownership position or intentions. The filing text provided is only an EDGAR directory listing and does not disclose the specific details of the amendment.

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Key details

Subject companyAddex Therapeutics Ltd.

How ADXN stock reacted

Close before

$3.71

Sep 3, 2026

First close after

-1.62%

$3.65

5 trading days

-5.93%

$3.49

Since filing

-21.56%

$2.91

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Frequently asked questions

What did ADXN file with the SEC on Sep 4, 2026?

ADXN filed a SCHEDULE 13D/A (SEC filing). An amendment to a Schedule 13D was filed for Addex Therapeutics Ltd., indicating a change in a major shareholder's ownership position or intentions. The filing text provided is only an EDGAR directory listing and does not disclose the specific 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 ADXN stock react to this filing?

ADXN closed at $3.71 before the filing and $3.65 on Sep 4, 2026 (-1.62%). Five trading days later: $3.49 (-5.93%).

Other ADXN SEC filings

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