Company: AAOI
Filing Date: 2025-02-28
Form Type: 424B5
Source: 0001104659-25-019109
Chunk: 37

Company: APPLIED OPTOELECTRONICS, INC.
Filing Date: 2025-02-28
Form: 424B5
Chunk 37
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 above the prevailing market price.

#### Description of Debt Securities
The following description, together with the additional information we may include in any applicable prospectus supplements, summarizes the material terms and provisions of the debt securities that we may offer under this prospectus. While the terms summarized below will apply generally to any warrants that we may offer, we will describe the particular terms of any series of warrants in more detail in the applicable prospectus supplement.

#### General
The debt securities will be our direct obligations, which may be senior or subordinated, secured or unsecured, and convertible into shares of our common stock, preferred stock or other securities. The debt securities will be issued under an indenture, which may be amended or supplemented from time to time, the form of which will be filed as an exhibit to a post-effective amendment to this registration statement or as an exhibit to a report pursuant to Section 13(a) or 15(d) of the Exchange Act and incorporated herein by reference.

The applicable prospectus supplement and/or other offering materials will describe the material terms of the debt securities offered through that prospectus supplement as well as any general terms described in this section that will not apply to those debt securities. To the extent the applicable prospectus supplement or other offering materials relating to an offering of debt securities are inconsistent with this prospectus, the terms of that prospectus supplement or other offering materials will supersede the information in this prospectus.

The prospectus supplement relating to any series of debt securities that we may offer will contain the specific terms of the debt securities. These terms may include the following:

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the title and principal aggregate amount of the debt securities;

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whether the debt securities will be secured or unsecured;

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whether the debt securities are convertible or exchangeable into other securities;

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the percentage or percentages of principal amount at which such debt securities will be issued;

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the interest rate(s) or the method for determining the interest rate(s);

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the dates on which interest will accrue or the method for determining dates on which interest will accrue and dates on which interest will be payable;

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the person to whom any interest on the debt securities will be payable;

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the places where payments on the debt securities will be payable;

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the maturity date;

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redemption or early repayment provisions;

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authorized denominations;

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form;

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provisions with respect to the retirement of any debt securities;

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provisions relating to the subordination of the rights of debt securities to