Quoin Pharmaceuticals replaces auditor Marcum LLP with CBIZ CPAs after attest business acquisition

Quoin Pharmaceuticals, Ltd.

Marcum LLP resigned as auditor on March 18, 2025; CBIZ CPAs P.C. engaged effective immediately for FY 2025.
Change follows CBIZ CPAs' acquisition of Marcum's attest business effective November 1, 2024.
Marcum's FY 2023 and 2024 reports contained no adverse opinion, qualification, disagreements, or reportable events.
Engagement approved by Audit Committee; Marcum provided agreement letter attached as Exhibit 16.1.

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