---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-23-040776"
form_type: "8-K"
ticker: "ARWR"
cik: "0000879407"
company_name: "ARROWHEAD PHARMACEUTICALS, INC."
filed_at: "2023-12-05T23:59:59+00:00"
generated_at: "2026-06-07T18:27:55.150838+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.35
calibrated_materiality_score: 0.35
confidence: "high"
source: SEC EDGAR
---

# Arrowhead Pharmaceuticals dismisses RSJ as auditor, engages KPMG

## Summary
- Dismissed Rose, Snyder & Jacobs (RSJ) as independent auditor effective December 1, 2023.
- RSJ's audit reports for FY2022 and FY2023 were unqualified with no adverse opinion.
- No disagreements or reportable events occurred in the two fiscal years or subsequent interim period.
- Engaged KPMG as new independent auditor for fiscal year ending September 30, 2024.
- Company did not consult KPMG on accounting principles, disagreements, or reportable events prior to engagement.

## SEC filing metadata
- accession: 0001628280-23-040776
- form_type: 8-K
- ticker: ARWR
- cik: 0000879407
- company_name: ARROWHEAD PHARMACEUTICALS, INC.
- filed_at: 2023-12-05T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.35
- calibrated_materiality_score: 0.35
- confidence: high
- sec_items: 4.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/879407/000162828023040776/0001628280-23-040776-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/879407/000162828023040776/arwr-20231205.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-23-040776
- JSON: https://secwatch.observer/filing/0001628280-23-040776.json
- Plain text: https://secwatch.observer/filing/0001628280-23-040776.txt

## Key facts
- Auditor Changes
  ARROWHEAD PHARMACEUTICALS, INC. engaged KPMG, LLP as its auditor.
  - Action: engagement
  - Auditor: KPMG, LLP
  source text: On December 01, 2023, the Audit Committee recommended, and the Board of Directors of the Company approved, the engagement of KPMG, LLP ("KPMG") as the Company's new independent registered public accounting firm for the Company's fiscal year ending September 30, 2024.
  evidence_url: https://www.sec.gov/Archives/edgar/data/879407/000162828023040776/0001628280-23-040776-index.htm
- Auditor Changes
  ARROWHEAD PHARMACEUTICALS, INC. dismissed Rose, Snyder & Jacobs, LLP as its auditor.
  - Action: dismissal
  - Auditor: Rose, Snyder & Jacobs, LLP
  source text: On December 01, 2023, the Audit Committee of the Board of Directors of Arrowhead Pharmaceuticals, Inc. (the "Company") approved the dismissal of Rose, Snyder & Jacobs, LLP ("RSJ") as the Company's independent registered public accounting firm, effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/879407/000162828023040776/0001628280-23-040776-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.