EURK SCHEDULE 13G/A: SEC filing

Mizuho Financial Group and its subsidiaries

Filed with the SEC on Aug 13, 2026 · accession 0001104659-26-095275

EURK filed a SCHEDULE 13G/A (schedule 13g/a) with the SEC on Aug 13, 2026. A report the company filed with the SEC (the US market regulator). The stock moved +4.3% by the first close after the filing.

Summary of the filing

Mizuho Financial Group and its subsidiaries filed a Schedule 13G/A amendment regarding their holdings in Eureka Acquisition Corp, accompanied by powers of attorney authorizing Takahiro Katsura to execute and file Form 13G on their behalf.

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Key details

Filer / beneficial ownerMizuho Financial Group, Inc.

Subsidiary of filerMizuho Bank, Ltd.

Subsidiary of filerMizuho Americas LLC

Subsidiary of filerMizuho Securities USA LLC

Issuer of securities held by filerEureka Acquisition Corp

Managing director, head of global branches & subsidiaries coordination office, mizuho financial groupTakahiro Katsura

Senior managing corporate executive, head of global corporate & investment banking, mizuho financial groupShuji Matsuura

Chief legal officer, mizuho americas llc; managing director, general counsel, mizuho securities usa llcAdam Hopkins

How EURK stock reacted

Close before

$11.51

Aug 6, 2026

First close after

+4.26%

$12.00

5 trading days

+1.91%

$11.73

Since filing

+0.17%

$11.53

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Frequently asked questions

What did EURK file with the SEC on Aug 13, 2026?

EURK filed a SCHEDULE 13G/A (SEC filing). Mizuho Financial Group and its subsidiaries filed a Schedule 13G/A amendment regarding their holdings in Eureka Acquisition Corp, accompanied by powers of attorney authorizing Takahiro Katsura to execute and file Form 13G on their behalf.

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 EURK stock react to this filing?

EURK closed at $11.51 before the filing and $12.00 on Aug 19, 2026 (+4.26%). Five trading days later: $11.73 (+1.91%).

Other EURK SEC filings

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