MBRX SCHEDULE 13G: SEC filing

CVI Investments, Inc. and Heights Capital Management, Inc.

Filed with the SEC on · accession 0001649553-26-000082

MBRX filed a SCHEDULE 13G (schedule 13g) with the SEC on Aug 10, 2026. A report the company filed with the SEC (the US market regulator). The stock moved +5.1% by the first close after the filing.

Summary of the filing

CVI Investments, Inc. and Heights Capital Management, Inc. filed a joint Schedule 13G confirming their agreement to jointly file beneficial ownership disclosures regarding Moleculin Biotech common stock.

Key details

Filing holderCVI Investments, Inc.
Filing holder / investment managerHeights Capital Management, Inc.
Subject companyMoleculin Biotech, Inc.
Assistant general counsel and assistant secretarySarah Travis

How MBRX stock reacted

Close before

$8.19

Aug 7, 2026

First close after

+5.10%

$8.61

5 trading days

+49.50%

$12.24

Since filing

+6.23%

$8.70

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Frequently asked questions

What did MBRX file with the SEC on Aug 10, 2026?

MBRX filed a SCHEDULE 13G (SEC filing). CVI Investments, Inc. and Heights Capital Management, Inc. filed a joint Schedule 13G confirming their agreement to jointly file beneficial ownership disclosures regarding Moleculin Biotech common stock.

How do I read a SCHEDULE 13G?

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 (schedule 13g): A report the company filed with the SEC (the US market regulator).

How did MBRX stock react to this filing?

MBRX closed at $8.19 before the filing and $8.61 on Aug 10, 2026 (+5.10%). Five trading days later: $12.24 (+49.50%).

Other MBRX SEC filings

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