Short answer
APPLIED OPTOELECTRONICS, INC. (AAOI) filed an 8-K current report with the SEC on May 8, 2026 reporting Item 4.01 (Changes in Registrant's Certifying Accountant). Grant Thornton dismissed May 4, 2026 after competitive auditor-selection process.
- This filing includes Item 4.01, an item that often signal trouble.
APPLIED OPTOELECTRONICS, INC. 8-K event analysis
AI summary of each reported item and its exhibits
Item 4.01 · Changes in Registrant's Certifying Accountant
- Grant Thornton dismissed May 4, 2026 after competitive auditor-selection process
- PwC appointed independent auditor for fiscal year ending December 31, 2026
- No audit-opinion qualifications or accounting disagreements with Grant Thornton for 2024–2025
- Prior material weakness in technical-accounting review controls remediated as of December 31, 2025
- Auditor transition appears non-contentious, with Grant Thornton’s SEC letter filed as Exhibit 16.1
Generated from the filing text and exhibits; verify against the original. What 8-K item codes mean
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