Syntec Optics Holdings, Inc. dismissed CBIZ CPAs P.C. as its independent registered public accounting firm effective August 19, 2026, and appointed WithumSmith+Brown, PC as the successor auditor. The prior audit report for fiscal year ended December 31, 2025, contained no adverse opinions or modifications. However, the filing discloses multiple material weaknesses in internal control over financial reporting, including deficiencies in documentation of formal controls, segregation of duties, timely reconciliations for accounts payable and taxes, related-party transaction identification, evaluation of non-routine transactions, and IT general controls regarding user access and change management. The company has authorized CBIZ CPAs to respond to inquiries from Withum regarding these reportable events. Syntec Optics Holdings, Inc. operates in the technology sector, specializing in optical components and photonics solutions.