Company: AAOI
Filing Date: 2025-04-25
Form Type: 424B7
Source: 0001104659-25-039431
Chunk: 16

Company: APPLIED OPTOELECTRONICS, INC.
Filing Date: 2025-04-25
Form: 424B7
Chunk 16
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 our website at http://ao-inc.com/ . Except for the specific incorporated documents listed above, no information available on or through our website shall be deemed to be incorporated in this prospectus supplement, the accompanying prospectus, or the registration statement of which they form a part. See also “Where You Can Find More Information.”

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TABLE OF CONTENTS

#### Prospectus

#### APPLIED OPTOELECTRONICS, INC.

#### Common Stock

#### Preferred Stock

#### Debt Securities

#### Warrants

#### Units
**We may offer and sell any combination of the securities listed above from time to time, in one or more classes or series and in amounts, at prices and on terms that we will determine at the time of the offering.

In addition, selling securityholders may offer and sell, from time to time, these securities on terms described in a prospectus supplement. We will not receive any proceeds from the sale of our securities by the selling securityholders.

This prospectus provides you with a general description of the securities we may offer. Each time we or selling securityholders sell securities, we or such selling securityholders will provide a supplement to this prospectus that contains specific information about the offering and, if applicable, the selling securityholders, as well as the amounts, prices and terms of the securities. The prospectus supplement may also add, update or change information contained in this prospectus. You should carefully read this prospectus, all prospectus supplements and all other documents incorporated by reference in this prospectus before you invest in our securities.

We or selling securityholders may offer and sell these securities in the same offering or in separate offerings through underwriters, dealers or agents or directly to purchasers, on a continuous or delayed basis. The prospectus supplement for each offering will describe in detail the plan of distribution for that offering and will set forth the names of any underwriters, dealers or agents involved in the offering and any applicable fees, commissions or discount arrangements. See “Plan of Distribution.”

We encourage you to carefully review and consider this prospectus and any prospectus supplement before investing in our securities. We also encourage you to read the documents to which we have referred you in the “Where To Learn More About Us” section of this prospectus for information on us and for our financial statements.

THIS PROSPECTUS MAY NOT BE USED TO SELL SECURITIES UNLESS ACCOMPANIED BY A PROSPECTUS SUPPLEMENT DESCRIBING THE METHOD AND TERMS OF