SYNTEC OPTICS HOLDINGS, INC. (OPTX): auditor change — Syntec Optics auditor Marcum resigns; CBIZ CPAs appointed Oct 10, 2025

SYNTEC OPTICS HOLDINGS, INC.

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).

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

Marcum LLP resigned as auditor of SYNTEC OPTICS HOLDINGS, INC..

Action: resignation
Auditor: Marcum LLP

Exact text from the filing

On October 10, 2025, Marcum informed Syntec Optics Holdings, Inc. (the “Company”) and as the Audit Committee of the Board of Directors approved, that Marcum resigned 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

SYNTEC OPTICS HOLDINGS, INC. engaged CBIZ CPAs P.C. as its auditor.

Action: engagement
Auditor: CBIZ CPAs P.C.

Exact text from the filing

On October 10, 2025, the Company, with the approval of the Audit Committee of the Board of Directors and the Board of Directors, engaged CBIZ CPAs P.C. as the Company’s independent registered public accounting firm.

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Source: SEC EDGAR

accession 0001493152-25-017828

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