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AAOI 424B5: Secondary offering

Applied Optoelectronics, Inc.

Filed with the SEC on · accession 0001104659-26-099685

AAOI filed a 424B5 (prospectus (offering)) with the SEC on Aug 21, 2026. The final terms of an offering of shares or bonds. The stock moved -3.4% by the first close after the filing.

Summary of the filing

Applied Optoelectronics, Inc. filed a 424B5 prospectus supplement for a secondary offering of common stock under its existing S-3 shelf registration.

For details, click here →How to read a 424B5 →

Key details

IssuerApplied Optoelectronics, Inc.

How AAOI stock reacted

Close before

$129.23

Aug 20, 2026

First close after

-3.41%

$124.82

5 trading days

-12.34%

$113.28

Since filing

-63.72%

$46.89

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Frequently asked questions

What did AAOI file with the SEC on Aug 21, 2026?

AAOI filed a 424B5 (Secondary offering). Applied Optoelectronics, Inc. filed a 424B5 prospectus supplement for a secondary offering of common stock under its existing S-3 shelf registration.

What does a secondary offering mean for AAOI stock?

New shares dilute existing holders and are often sold at a discount to the market price.

How do I read a 424B5?

The final terms of an offering of shares or bonds. Look at price, number of shares and the discount to the market price. Large offerings dilute existing shareholders.

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 424B5 (prospectus (offering)): The final terms of an offering of shares or bonds.

How did AAOI stock react to this filing?

AAOI closed at $129.23 before the filing and $124.82 on Aug 21, 2026 (-3.41%). Five trading days later: $113.28 (-12.34%).

Other AAOI SEC filings

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