---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-335497"
form_type: "8-K"
ticker: "APVO"
cik: "0001671584"
company_name: "Aptevo Therapeutics Inc."
filed_at: "2025-12-29T23:59:59+00:00"
generated_at: "2026-05-16T12:06:54.648938+00:00"
event_type: "other"
sentiment: "negative"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Aptevo Therapeutics files 1-for-18 reverse stock split effective Dec 29, 2025

## Summary
- Reverse split ratio 1-for-18 approved by board Dec 17; effective Dec 29 at 5:01 PM ET.
- Split-adjusted trading on Nasdaq begins Dec 30; new CUSIP 03835L702.
- No fractional shares issued; cash in lieu; adjustments to options, warrants, RSUs.
- Stockholders approved split on July 24, 2025 Special Meeting; range 1:6–1:22.
- Forward-looking statements acknowledge risk of ability to continue as going concern.

## SEC filing metadata
- accession: 0001193125-25-335497
- form_type: 8-K
- ticker: APVO
- cik: 0001671584
- company_name: Aptevo Therapeutics Inc.
- filed_at: 2025-12-29T23:59:59+00:00
- event_type: other
- sentiment: negative
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 5.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1671584/000119312525335497/0001193125-25-335497-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1671584/000119312525335497/apvo-20251229.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-335497
- JSON: https://secwatch.observer/filing/0001193125-25-335497.json
- Plain text: https://secwatch.observer/filing/0001193125-25-335497.txt

## Source-grounded claims
- claim_id: 01e68f6a8e35c126debdc129cb263e435313af47
  claim: Aptevo Therapeutics Inc.: Amendment to Certificate of Incorporation to effect a 1-for-18 reverse stock split (effective 2025-12-29).
  evidence_excerpt: Accordingly, on December 29, 2025, the Company filed a Certificate of Amendment of Amended and Restated Certificate of Incorporation (the “Amendment”) with the Secretary of State of the State of Delaware to effect the Reverse Stock Split. The Amendment was effective at 5:01 p.m. Eastern Time on December 29, 2025 (the “Effective Time”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1671584/000119312525335497/0001193125-25-335497-index.htm

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