secwatch.observer — SEC 8-K summary ====================================== Issuer: SYNTEC OPTICS HOLDINGS, INC. (OPTX) CIK: 0001866816 Form: 8-K Filed at: 2025-10-14T23:59:59+00:00 Accession: 0001493152-25-017828 Event type: other_material Sentiment: neutral Materiality: 0.60 Item codes: 4.01, 9.01 LLM model: deepseek-v4-flash:cloud@v2 Syntec Optics auditor Marcum resigns; CBIZ CPAs appointed Oct 10, 2025 ---------------------------------------------------------------------- - Marcum LLP resigned as independent auditor on Oct 10, 2025; CBIZ CPAs P.C. engaged as replacement. - No disagreements with Marcum on accounting principles or audit scope during past two fiscal years. - Marcum's reports for FYE 2023 and 2024 were unqualified; no adverse opinion or modification. - Material weaknesses in internal controls were previously disclosed in 2024 10-K (Item 9A). - Company provided Marcum with disclosure copy; Marcum concurred via letter dated Oct 10, 2025 (Ex. 16.1). Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/1866816/000149315225017828/0001493152-25-017828-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/1866816/000149315225017828/form8-k.htm HTML page: https://secwatch.observer/filing/0001493152-25-017828 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer