COSO SCHEDULE 13G/A: SEC filing
An institutional filer
Filed with the SEC on · accession 0001767803-26-000057
COSO filed a SCHEDULE 13G/A (schedule 13g/a) with the SEC on Aug 14, 2026. An institutional filer submitted an amended Schedule 13G disclosing a passive ownership stake in CoastalSouth Bancshares, Inc. (COSO). The stock moved -0.7% by the first close after the filing.
Summary of the filing
An institutional filer submitted an amended Schedule 13G disclosing a passive ownership stake in CoastalSouth Bancshares, Inc. (COSO). The filing indicates a change to a previously reported position.
Key details
How COSO stock reacted
Close before
$28.01
Aug 13, 2026
First close after
-0.71%
$27.81
5 trading days
-2.71%
$27.25
Since filing
+0.50%
$28.15
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Click hereFrequently asked questions
What did COSO file with the SEC on Aug 14, 2026?
COSO filed a SCHEDULE 13G/A (SEC filing). An institutional filer submitted an amended Schedule 13G disclosing a passive ownership stake in CoastalSouth Bancshares, Inc. (COSO). The filing indicates a change to a previously reported position.
How do I read a SCHEDULE 13G/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 13G/A (schedule 13g/a): A report the company filed with the SEC (the US market regulator).
How did COSO stock react to this filing?
COSO closed at $28.01 before the filing and $27.81 on Aug 14, 2026 (-0.71%). Five trading days later: $27.25 (-2.71%).
Other COSO SEC filings
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