secwatch.observer — SEC 8-K summary ====================================== Issuer: APPLIED OPTOELECTRONICS, INC. (AAOI) CIK: 0001158114 Form: 8-K Filed at: 2026-05-08T23:59:59+00:00 Accession: 0001683168-26-003572 Event type: other_material Sentiment: neutral Materiality: 0.50 Item codes: 4.01, 9.01 LLM model: deepseek-v4-flash:cloud@v2 Applied Optoelectronics dismisses Grant Thornton, appoints PwC as FY2026 auditor -------------------------------------------------------------------------------- - Grant Thornton dismissed May 4, 2026 after competitive selection; PwC appointed for fiscal year ending Dec 31, 2026. - No adverse opinions or disagreements with Grant Thornton in FY2024/2025; prior material weakness in technical accounting controls remediated by Dec 2025. - Grant Thornton will complete review of Q1 2026; PwC not previously consulted on accounting matters. Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/1158114/000168316826003572/0001683168-26-003572-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/1158114/000168316826003572/aaoi_8k.htm HTML page: https://secwatch.observer/filing/0001683168-26-003572 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer