MBRX SCHEDULE 13D: Activist campaign
Annammed, Inc. and Walter V. Klemp
Filed with the SEC on · accession 0001437749-26-028926
MBRX filed a SCHEDULE 13D (schedule 13d) with the SEC on Aug 25, 2026. Annammed, Inc. and Walter V. Klemp filed a joint Schedule 13D regarding their position in Moleculin Biotech, Inc., indicating a potentially active ownership stake. The stock moved +0.3% by the first close after the filing.
Summary of the filing
Annammed, Inc. and Walter V. Klemp filed a joint Schedule 13D regarding their position in Moleculin Biotech, Inc., indicating a potentially active ownership stake. The filing includes a joint filing agreement under Rule 13d-1(k).
Key details
How MBRX stock reacted
Close before
$12.19
Aug 24, 2026
First close after
+0.28%
$12.22
5 trading days
+5.81%
$12.89
Since filing
-28.61%
$8.70
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Click hereFrequently asked questions
What did MBRX file with the SEC on Aug 25, 2026?
MBRX filed a SCHEDULE 13D (Activist campaign). Annammed, Inc. and Walter V. Klemp filed a joint Schedule 13D regarding their position in Moleculin Biotech, Inc., indicating a potentially active ownership stake. The filing includes a joint filing agreement under Rule 13d-1(k).
What does a activist campaign mean for MBRX stock?
A settlement removes uncertainty; the stock often reacts to whether the amount is bigger or smaller than investors expected.
How do I read a SCHEDULE 13D?
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 (schedule 13d): A report the company filed with the SEC (the US market regulator).
How did MBRX stock react to this filing?
MBRX closed at $12.19 before the filing and $12.22 on Aug 25, 2026 (+0.28%). Five trading days later: $12.89 (+5.81%).
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