David C. Kuo - 09 Feb 2026 Form 4 Insider Report for APPLIED OPTOELECTRONICS, INC. (AAOI)

Signature
/s/ David C. Kuo
Issuer symbol
AAOI
Transactions as of
09 Feb 2026
Net transactions value
-$1,002,905
Form type
4
Filing time
11 Feb 2026, 17:10:46 UTC
Previous filing
30 Jan 2026

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Kuo David C ***Senior Vice President and Chief Legal Officer C/O APPLIED OPTOELECTRONICS, INC., 13139 JESS PIRTLE BLVD., SUGAR LAND /s/ David C. Kuo 11 Feb 2026 0001587422

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction AAOI Common Stock, $.001 par value Award $0 +17,027 +15% $0.000000 131,663 09 Feb 2026 Direct F1
transaction AAOI Common Stock, $.001 par value Sale $126,654 -2,533 -1.9% $50.00 129,130 10 Feb 2026 Direct F2
transaction AAOI Common Stock, $.001 par value Sale $876,251 -17,467 -14% $50.17 111,663 11 Feb 2026 Direct F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 The Restricted Stock Units (RSUs) were granted under the Company's Amended and Restated 2021 Equity Incentive Plan, one-sixteen of the RSUs vest every three months commencing on January 21, 2026.
F2 These sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 15, 2025. The shares were sold in multiple transactions at actual sale prices ranging from $50.000 to $50.040 per share. The price reported reflects the weighted average sale price for the transactions. The reporting person undertakes to provide upon request by SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold during each transaction.
F3 These sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 15, 2025. The shares were sold in multiple transactions at actual sale prices ranging from $50.000 to $50.440 per share. The price reported reflects the weighted average sale price for the transactions. The reporting person undertakes to provide upon request by SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold during each transaction..

Remarks:

***Senior Vice President and Chief Legal Officer