---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-25-088970"
form_type: "8-K"
ticker: "APVO"
cik: "0001671584"
company_name: "Aptevo Therapeutics Inc."
filed_at: "2025-06-23T23:59:59+00:00"
generated_at: "2026-05-18T23:49:26.453876+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.15
calibrated_materiality_score: 0.15
confidence: "high"
source: SEC EDGAR
---

# Aptevo Therapeutics appoints Baker Tilly as new auditor after Moss Adams merger

## Summary
- Moss Adams merged with Baker Tilly effective June 3, 2025; Moss Adams resigned and Baker Tilly appointed for FY2025.
- No disagreements or reportable events with Moss Adams during 2024/2023 and subsequent interim period.
- Prior audit reports from Moss Adams included a going concern uncertainty explanatory paragraph.

## SEC filing metadata
- accession: 0000950170-25-088970
- form_type: 8-K
- ticker: APVO
- cik: 0001671584
- company_name: Aptevo Therapeutics Inc.
- filed_at: 2025-06-23T23:59:59+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.15
- calibrated_materiality_score: 0.15
- confidence: high
- sec_items: 4.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1671584/000095017025088970/0000950170-25-088970-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1671584/000095017025088970/apvo-20250623.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-25-088970
- JSON: https://secwatch.observer/filing/0000950170-25-088970.json
- Plain text: https://secwatch.observer/filing/0000950170-25-088970.txt

## Key facts
- Auditor Changes
  Aptevo Therapeutics Inc. engaged Baker Tilly US, LLP as its auditor.
  - Action: engagement
  - Auditor: Baker Tilly US, LLP
  source text: the Audit Committee of the Company’s Board of Directors approved the appointment of Baker Tilly, as the successor to Moss Adams, as the Company’s independent registered public accounting firm for the year ending December 31, 2025
  evidence_url: https://www.sec.gov/Archives/edgar/data/1671584/000095017025088970/0000950170-25-088970-index.htm
- Auditor Changes
  Moss Adams LLP resigned as auditor of Aptevo Therapeutics Inc..
  - Action: resignation
  - Auditor: Moss Adams LLP
  - Successor: Baker Tilly US, LLP
  source text: On June 23, 2025, Aptevo Therapeutics Inc., (the "Company") was notified that Moss Adams LLP ("Moss Adams"), the Company's independent registered public accounting firm, merged with Baker Tilly US, LLP effective on June 3, 2025.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1671584/000095017025088970/0000950170-25-088970-index.htm

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