APPLIED OPTOELECTRONICS, INC. (AAOI): auditor change — Applied Optoelectronics dismisses Grant Thornton, appoints PwC as FY2026 auditor

APPLIED OPTOELECTRONICS, INC.

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.

item 4.01 item 9.01

Key facts

Extracted from this filing and checked against the source text.

Auditor Changes SEC 8-K Item 4.01/4.02 confidence 0.9

APPLIED OPTOELECTRONICS, INC. dismissed Grant Thornton LLP as its auditor.

Action: dismissal
Auditor: Grant Thornton LLP
Successor: PricewaterhouseCoopers LLP

Exact text from the filing

on May 4, 2026, the Committee approved the dismissal of Grant Thornton as the Company’s independent registered public accounting firm.

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Auditor Changes SEC 8-K Item 4.01/4.02 confidence 0.9

APPLIED OPTOELECTRONICS, INC. engaged PricewaterhouseCoopers LLP as its auditor.

Action: engagement
Auditor: PricewaterhouseCoopers LLP

Exact text from the filing

Grant Thronton was previously engaged to perform a review of the Company’s consolidated financial statements for the quarter ending March 31, 2026.

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Source: SEC EDGAR

accession 0001683168-26-003572

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