---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-25-088592"
form_type: "8-K"
ticker: "APVO"
cik: "0001671584"
company_name: "Aptevo Therapeutics Inc."
filed_at: "2025-06-20T23:59:59+00:00"
generated_at: "2026-05-19T01:32:04.797079+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Aptevo files prospectus supplement for ATM offering of up to $8.0M

## Summary
- Filed prospectus supplement for ATM offering of up to $8,037,381 in common stock via Roth Capital Partners.
- As of June 20, had sold 481,828 shares for gross proceeds of $3,765,143 under the April 2025 Sales Agreement.
- Offering is registered under Form S-3 (File No. 333-284969); legal opinion from Paul Hastings LLP filed as exhibit.

## SEC filing metadata
- accession: 0000950170-25-088592
- form_type: 8-K
- ticker: APVO
- cik: 0001671584
- company_name: Aptevo Therapeutics Inc.
- filed_at: 2025-06-20T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1671584/000095017025088592/0000950170-25-088592-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1671584/000095017025088592/apvo-20250620.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-25-088592
- JSON: https://secwatch.observer/filing/0000950170-25-088592.json
- Plain text: https://secwatch.observer/filing/0000950170-25-088592.txt

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