secwatch.observer — SEC 8-K summary ====================================== Issuer: Avidity Biosciences, Inc. (—) CIK: 0001599901 Form: 8-K Filed at: 2025-04-29T23:59:59+00:00 Accession: 0001599901-25-000091 Event type: other_material Sentiment: neutral Materiality: 0.30 Item codes: 4.01, 9.01 LLM model: deepseek-v4-flash:cloud@v2 Avidity Biosciences appoints Deloitte as auditor; dismisses BDO effective after Q1 2025 filing -------------------------------------------------------------------------------- - Deloitte & Touche appointed as independent registered public accounting firm for FY2025, effective after Q1 2025 10-Q filing. - BDO dismissed on April 25, 2025; its 2023-2024 audit opinions were unqualified with no disagreements. - 2023 material weakness in ITGC segregation of duties was fully remediated and BDO issued unqualified opinion on 2024 ICFR. - Company did not consult Deloitte on any accounting or audit matters prior to appointment. Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/1599901/000159990125000091/0001599901-25-000091-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/1599901/000159990125000091/rna-20250425.htm HTML page: https://secwatch.observer/filing/0001599901-25-000091 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer