Item 7.01 Regulation FD Disclosure. On February 13, 2026, Applied Optoelectronics, Inc. issued a press release announcing the groundbreaking ceremony for a new manufacturing facility. The full text of the press release is attached as Exhibit 99.1 and is incorporated herein by reference. In accordance with General Instruction B.2 of Form 8-K, the information in this Item 7.01 of this Current Report on Form 8-K, including Exhibit 99.1 shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “ Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Exchange Act or the Securities Act, except as shall be expressly set forth by reference in such a filing.

Item 9.01 Financial Statements and Exhibits. (d) Exhibits Exhibit No. Description 99.1 Press Release of Applied Optoelectronics, Inc. issued on February 13, 2026. ───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────── 104 Cover Page Interactive Data File (the cover page tags are embedded within the Inline XBRL document). SIGNATURES