Company: AAOI
Filing Date: 2025-05-28
Form Type: 424B5
Source: 0001104659-25-053547
Chunk: 17

Company: APPLIED OPTOELECTRONICS, INC.
Filing Date: 2025-05-28
Form: 424B5
Chunk 17
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ing conditions that were outstanding as of May 27, 2025; • any shares issuable upon conversion of our 5.25% Convertible Senior Notes due 2026; • any shares issuable upon conversion of our 2.75% Convertible Senior Notes due 2030; and • any shares issuable upon exercise of warrants issued to Amazon.com, Inc.

S-10

TABLE OF CONTENTS

### PLAN OF DISTRIBUTION
We have entered into a sales agreement with the Agents under which we may issue and sell shares of our common stock from time to time through them acting as agents. We may issue and sell shares through this prospectus supplement having an aggregate gross sales price of up to $100,000,000. The following summary of the material provisions of the sales agreement does not purport to be a complete statement of its terms and conditions. The sales agreement has been filed as an exhibit to our Current Report on Form 8-K dated as of the date hereof.

Upon delivery of a placement notice and subject to the terms and conditions of the sales agreement, the Agent may sell our common stock by any method permitted by law deemed to be an “at-the-market” offering as defined in Rule 415 promulgated under the Securities Act, including sales made directly on The Nasdaq Global Market, on any other existing trading market for our common stock or through a market maker. The Agents, with the agreement of the Company, may also sell certain of our common stock by any other method permitted by law, including in privately negotiated transactions. We may instruct the Agents not to sell common stock if the sales cannot be effected at or above the price designated by us from time to time. We or the Agents may suspend the offering of common stock upon notice and subject to other conditions.

Except as otherwise described in the sales agreement, we will pay the Agents commissions, in cash, for its services in acting as agents in the sale of our common stock. The Agents will be entitled to compensation at a commission rate of up to 2.0% of the gross proceeds from the sales of the shares of our common stock sold pursuant to the sales agreement. Because there is no minimum offering amount required as a condition to close this offering, the actual total public offering amount, commissions and proceeds to us, if any, are not determinable at this time. We have also agreed to reimburse the Agents for certain specified expenses in connection with the registration of shares of our common stock under state blue sky laws and any filing with