Company: AAOI
Filing Date: 2025-02-28
Form Type: PRE 14A
Source: 0001104659-25-019126
Chunk: 76

Company: APPLIED OPTOELECTRONICS, INC.
Filing Date: 2025-02-28
Form: PRE 14A
Chunk 76
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 such matters in accordance with their best judgment.

### HOUSEHOLDING
The SEC has adopted rules that permit companies and intermediaries, such as brokers, to satisfy the delivery requirements for proxy statements with respect to two or more stockholders sharing the same address by delivering one copy of these materials, other than the proxy card, to those stockholders. This process,

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which is commonly referred to as “householding,” can mean extra convenience for stockholders and cost savings for the Company. Beneficial stockholders can request information about householding from their banks, brokers, or other holders of record. Through householding, stockholders of record who have the same address and last name will receive only one copy of our Proxy Statement, unless one or more of these stockholders notifies us that they wish to continue receiving individual copies. This procedure will reduce printing costs and postage fees.

Stockholders who participate in householding will continue to receive separate proxy cards. If you are eligible for householding, but you and other stockholders of record with whom you share an address currently receive multiple copies of the Proxy Statement, or if you hold stock in more than one account and wish to receive only a single copy of the Proxy Statement for your household, please contact Broadridge Householding Department, in writing, at 51 Mercedes Way, Edgewood, New York 11717, or by phone at (800) 542-1061 or (866) 540-7095. If you are a beneficial owner, please contact your bank, broker or other nominee directly if you have questions, require additional copies of the proxy materials, wish to receive multiple copies by revoking your consent to householding or wish to request single copies of the proxy materials in the future.

By order of the Board,

David Kuo 
 Chief Legal and Compliance Officer and Corporate Secretary

[ ], 2025

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#### APPENDIX A​

#### APPLIED OPTOELECTRONICS, INC.

#### AMENDED AND RESTATED 2021 EQUITY INCENTIVE PLAN
<div align='center'>Originally adopted by the Board on June 3, 2021 
 Originally approved by the stockholders on June 3, 2021 
 As amended and restated effective as of June 2, 2022, June 8, 2023 and [ ], 2025</div>

1.

#### Purpose of the Plan