Aptevo (APVO) partners with Niowave for radiopharma development; Niowave takes 7.9% equity stake

Aptevo Therapeutics Inc.

50/50 strategic collaboration to develop up to three radiopharmaceutical oncology programs using Aptevo's multispecific platforms and Niowave's radioisotopes.
Niowave made initial $500K equity investment for 7.9% stake; potential up to 19.99% through warrant exercises at $8.00/share.
First program targets Nectin-4 with Actinium-225; proof-of-concept study to begin.
Deal marks Aptevo's expansion into radiopharmaceuticals; Niowave's first therapeutic development investment.
Niowave to supply radioisotopes if it opts out of collaboration; Aptevo retains development rights.

item 1.01 item 3.02 item 7.01 item 9.01

Machine-readable event card

schema_version: secwatch.filing_event.v1
accession: 0001193125-26-241867
form_type: 8-K
ticker: APVO
cik: 0001671584
company_name: Aptevo Therapeutics Inc.
filed_at: 2026-05-27T20:05:16+00:00
discovered_at: 2026-05-27T20:07:00.348107+00:00
generated_at: 2026-05-27T20:08:19.771154+00:00
sec_items: ["1.01", "3.02", "7.01", "9.01"]
event_type: other_material
sentiment: positive
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calibrated_materiality_score: 0.75
confidence: high
secwatch_canonical_url: https://secwatch.observer/filing/0001193125-26-241867
json_url: https://secwatch.observer/filing/0001193125-26-241867.json
markdown_url: https://secwatch.observer/filing/0001193125-26-241867.md
text_url: https://secwatch.observer/filing/0001193125-26-241867.txt
edgar_index_url: https://www.sec.gov/Archives/edgar/data/1671584/000119312526241867/0001193125-26-241867-index.htm
edgar_primary_document_url: https://www.sec.gov/Archives/edgar/data/1671584/000119312526241867/apvo-20260525.htm
generated_by_model: deepseek-v4-flash:cloud@v2
review_status: machine_generated
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correction_note: null
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