Company: AAOI
Filing Date: 2025-06-02
Form Type: DEFA14A
Source: 0001104659-25-055505
Chunk: 2

Company: APPLIED OPTOELECTRONICS, INC.
Filing Date: 2025-06-02
Form: DEFA14A
Chunk 2
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 No. 1 and “FOR”                  
 Proposals No. 2, 3, and 4), irrespective of any instructions provided with respect to Withdrawn Proposal No. 4.                     |

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| · | If you are a stockholder who has already submitted your proxy or voting instructions for the Annual Meeting,                                                                                                      
 you do not need to resubmit new proxy or voting instructions unless you wish to change the vote you previously cast on the remaining proposals. You may change your vote at any time prior to the Annual Meeting. |

| · | If you are a stockholder of record and have already submitted a proxy, you have the right to change your 
 vote by revoking your proxy at any time before it is exercised at the Annual Meeting by:                 |

| o | Notifying the Corporate Secretary of the Company in writing; |

| o | Returning a later-dated, validly executed proxy card; |

| o | Voting again by Internet at www.proxyvote.com, or by telephone by dialing 1-800-690-6903; or |

| o | Voting in person at the Annual Meeting. |

Attendance at the Annual Meeting will
not revoke a proxy unless you actually vote during the Annual Meeting.

| · | If the shares you own are held in “street name” by a bank, broker, or other nominee, please follow the instructions provided 
 by your bank, broker, or other nominee if you wish to change your vote on any of the remaining proposals.                    |

Questions

| For Questions Regarding:                                        |     | Contact:                                                                                                                                                   |
| Annual Meeting                                                  |     | Applied Optoelectronics, Inc. Investor Relations at IR@ao-inc.com                                                                                          |
| Stock ownership and submission of proxies by registered holders |     | Continental Stock Transfer & Trust Company at (800) 509-5586 (within the U.S. and Canada) or (212) 509-4000 (worldwide) or at cstmail@continentalstock.com |
| Stock ownership or voting for beneficial holders                |     | Please contact your bank, broker, or other nominee                                                                                                         |
| Voting for registered holders                                   |     | Applied Optoelectronics, Inc. Investor Relations at IR@ao-inc.com                                                                                          |

For further information regarding voting at the
Annual Meeting, please refer to the Proxy Statement.

Important Information

Before making any voting
decision, you are urged to read the Proxy Statement and all related proxy materials carefully