RTSN SCHEDULE 13G: SEC filing
The B Group, Inc., B Group Capital LLC, and Branden B. Muhl
Filed with the SEC on · accession 0001213900-26-110378
RTSN filed a SCHEDULE 13G (schedule 13g) with the SEC on Oct 16, 2026. The B Group, Inc., B Group Capital LLC, and Branden B. The stock moved +15.2% by the first close after the filing.
Summary of the filing
The B Group, Inc., B Group Capital LLC, and Branden B. Muhl filed a joint Schedule 13G indicating a passive ownership stake in Retension Pharmaceuticals, Inc. The filing includes only a joint filing agreement exhibit with no ownership percentage or share details disclosed.
Key details
How RTSN stock reacted
Close before
$12.21
Oct 15, 2026
First close after
+15.23%
$14.07
5 trading days
+26.95%
$15.50
Since filing
-9.58%
$11.04
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Click hereFrequently asked questions
What did RTSN file with the SEC on Oct 16, 2026?
RTSN filed a SCHEDULE 13G (SEC filing). The B Group, Inc., B Group Capital LLC, and Branden B. Muhl filed a joint Schedule 13G indicating a passive ownership stake in Retension Pharmaceuticals, Inc. The filing includes only a joint filing agreement exhibit with no ownership percentage or share details disclosed.
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 RTSN stock react to this filing?
RTSN closed at $12.21 before the filing and $14.07 on Oct 16, 2026 (+15.23%). Five trading days later: $15.50 (+26.95%).
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