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Stocks/AACI/SEC Filings/8-K Nov 5, 2026

AACI 8-K: Material agreement

Armada Acquisition Corp. III

Filed with the SEC on Nov 5, 2026 · accession 0001193125-26-449772

AACI filed a 8-K (current report) with the SEC on Nov 5, 2026. A report of a major event, filed within four business days: results, deals, leadership changes, bankruptcy and more. The stock moved +0.1% by the first close after the filing.

Summary of the filing

Armada Acquisition Corp. III entered into a Business Combination Agreement with Brains Bioceutical Corp. and Brains Therapeutics Corp., outlining a proposed de-SPAC transaction involving a Cayman merger and a Canadian amalgamation.

For details, click here →How to read a 8-K →

Key details

Spac / registrantArmada Acquisition Corp. III
Target companyBrains Bioceutical Corp.
Pubco in the business combinationBrains Therapeutics Corp.
Spac sponsorArmada Sponsor III, LLC
Holder of convertible promissory note to be convertedDSM Venturing B.V.

How AACI stock reacted

Close before

$10.09

Nov 4, 2026

First close after

+0.15%

$10.11

5 trading days

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Since filing

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Frequently asked questions

What did AACI file with the SEC on Nov 5, 2026?

AACI filed a 8-K (Material agreement). Armada Acquisition Corp. III entered into a Business Combination Agreement with Brains Bioceutical Corp. and Brains Therapeutics Corp., outlining a proposed de-SPAC transaction involving a Cayman merger and a Canadian amalgamation.

What does a material agreement mean for AACI stock?

A contract important enough that investors need to know about it — a big customer contract, a loan, a merger agreement or a partnership.

How do I read a 8-K?

A report of a major event, filed within four business days: results, deals, leadership changes, bankruptcy and more. The "Item" number tells you the topic (e.g. 2.02 results, 5.02 executive change, 1.01 new agreement, 1.03 bankruptcy). Exhibits (99.1 press release) usually hold the details.

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 8-K (current report): A report of a major event, filed within four business days: results, deals, leadership changes, bankruptcy and more.

How did AACI stock react to this filing?

AACI closed at $10.09 before the filing and $10.11 on Nov 5, 2026 (+0.15%).

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Source: SEC EDGAR filing 0001193125-26-449772. The summary and key details are extracted by SEPT from the filing and may contain errors. Price reaction uses daily closing prices. Not financial advice.