Company: AAOI
Filing Date: 2025-08-27
Form Type: 424B5
Source: 0001104659-25-084005
Chunk: 39

Company: APPLIED OPTOELECTRONICS, INC.
Filing Date: 2025-08-27
Form: 424B5
Chunk 39
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 such debt securities will be payable;

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the time period within which, the manner in which and the terms and conditions upon which we or the purchaser of the debt securities can select the payment currency;

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the securities exchange(s) on which the securities will be listed, if any;

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whether any underwriter(s) will act as market maker(s) for the securities;

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extent to which a secondary market for the securities is expected to develop;

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our obligations or right to redeem, purchase or repay debt securities under a sinking fund, amortization or analogous provision;

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provisions relating to covenant defeasance and legal defeasance;

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provisions relating to satisfaction and discharge of the indenture;

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provisions relating to the modification of the indenture both with and without consent of holders of debt securities issued under the indenture;

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the law that will govern the indenture and debt securities; and

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additional terms not inconsistent with the provisions of the indenture.

We may sell the debt securities, including original issue discount securities, at par or at a substantial discount below their stated principal amount. Unless we inform you otherwise in a prospectus supplement, we may issue additional debt securities of a particular series without the consent of the holders of the debt securities of such series outstanding at the time of issuance. Any such additional debt securities, together with all other outstanding debt securities of that series, will constitute a single series of securities under the applicable indenture. In addition, we will describe in the applicable prospectus supplement material U.S. federal income tax considerations and any other special considerations for any debt securities we sell which are

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denominated in a currency or currency unit other than U.S. dollars. Unless we inform you otherwise in the applicable prospectus supplement, the debt securities will not be listed on any securities exchange.

We expect most debt securities to be issued in fully registered form without coupons and in denominations of $1,000 and integral multiples thereof. Subject to the limitations provided in the indenture and in the prospectus supplement, debt securities that are issued in registered form may be transferred or exchanged at the corporate office of the trustee or the principal corporate trust office of the trustee, without the payment of any service charge, other than any tax or other governmental charge payable in connection therewith.

#### Description of Warrants
The following description, together with the additional information we may include in any applicable prospectus supplements, summarizes the material terms and provisions of the warrants that we