secwatch / observer
8-K filed May 27, 2026, 4:05 PM ET ticker APVO CIK 0001671584
other material confidence high sentiment positive materiality 0.75

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

Aptevo Therapeutics Inc.

Key facts

Extracted from this filing and checked against the source text.

Equity Issuances SEC 8-K Item 3.02/3.03 confidence 0.95

Aptevo Therapeutics Inc. issued warrants to purchase 53,201 shares of common stock of warrant to Niowave, Inc. for combined purchase price of $5.075 per share for an aggregate purchase price of approximately $500,000.

Security
warrant
Shares
warrants to purchase 53,201 shares of common stock
Purchaser
Niowave, Inc.
Consideration
combined purchase price of $5.075 per share for an aggregate purchase price of approximately $500,000
Exact text from the filing
the Company agreed to initially issue and sell 98,522 of its shares of its common stock, par value $0.001 per share (the “Common Stock”) and accompanying warrants to purchase 53,201 shares of its common stock to Niowave in a private placement at a combined purchase price of $5.075 per share for an aggregate purchase price of approximately $500,000 (the “Initial Niowave Private Placement”).
View on SEC.gov
Equity Issuances SEC 8-K Item 3.02/3.03 confidence 0.95

Aptevo Therapeutics Inc. issued 98,522 shares of common stock of common stock to Niowave, Inc. for combined purchase price of $5.075 per share for an aggregate purchase price of approximately $500,000.

Security
common stock
Shares
98,522 shares of common stock
Purchaser
Niowave, Inc.
Consideration
combined purchase price of $5.075 per share for an aggregate purchase price of approximately $500,000
Exact text from the filing
the Company agreed to initially issue and sell 98,522 of its shares of its common stock, par value $0.001 per share (the “Common Stock”) and accompanying warrants to purchase 53,201 shares of its common stock to Niowave in a private placement at a combined purchase price of $5.075 per share for an aggregate purchase price of approximately $500,000 (the “Initial Niowave Private Placement”).
View on SEC.gov
Material Agreements SEC 8-K Item 1.01/1.02 confidence 0.9

Aptevo Therapeutics Inc. entered into Collaboration Agreement with Niowave, Inc. (effective 2026-05-25).

Action
entry
Agreement
collaboration
Counterparty
Niowave, Inc.
Effective
2026-05-25
Exact text from the filing
On May 25, 2026, Aptevo Research and Development LLC (“Aptevo Research”), a subsidiary of Aptevo Therapeutics Inc. (the “Company”), and Niowave, Inc. (“Niowave”) entered into a collaboration agreement (the “Collaboration Agreement”) to collaborate on the development of a potential human therapeutic product incorporating Aptevo’s proprietary molecules (including APVO455) and Niowave’s proprietary radioisotopes (including Actinium-225).
View on SEC.gov
Material Agreements SEC 8-K Item 1.01/1.02 confidence 0.9

Aptevo Therapeutics Inc. entered into Stock Purchase Agreement with Niowave, Inc. valued at approximately $500,000 (effective 2026-05-25).

Action
entry
Agreement
equity purchase
Counterparty
Niowave, Inc.
Value
approximately $500,000
Effective
2026-05-25
Exact text from the filing
on May 25, 2026, the Company entered into a stock purchase agreement with Niowave (the “Stock Purchase Agreement”) pursuant to which the Company agreed to initially issue and sell 98,522 of its shares of its common stock, par value $0.001 per share (the “Common Stock”) and accompanying warrants to purchase 53,201 shares of its common stock to Niowave in a private placement at a combined purchase price of $5.075 per share for an aggregate purchase price of approximately $500,000 (the “Initial Niowave Private Placement”).
View on SEC.gov
Material Agreements SEC 8-K Item 1.01/1.02 confidence 0.9

Aptevo Therapeutics Inc. entered into Investor Rights Agreement with Niowave, Inc. (effective 2026-05-25).

Action
entry
Agreement
equity purchase
Counterparty
Niowave, Inc.
Effective
2026-05-25
Exact text from the filing
Pursuant to the terms of an investor rights agreement (the “Investor Rights Agreement”) also entered into on May 25, 2026 between Niowave and the Company at the closing of the Initial Niowave Private Placement, Niowave agreed to certain transfer restrictions.
View on SEC.gov
Material Agreements SEC 8-K Item 1.01/1.02 confidence 0.9

Aptevo Therapeutics Inc. entered into Supply Agreement with Niowave, Inc. (effective 2026-05-25).

Action
entry
Agreement
supply
Counterparty
Niowave, Inc.
Effective
2026-05-25
Exact text from the filing
In connection with the execution of the Collaboration Agreement, the parties concurrently entered into a supply agreement providing for Niowave to supply proprietary radioisotopes (including Actinium-225) to Aptevo to the extent that Niowave elects not to continue with the development program contemplated by the Collaboration Agreement at certain opt-out windows set forth therein, after any such opt-out (the “Supply Agreement”).
View on SEC.gov

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Aptevo Therapeutics Inc. filing history →

Source: SEC EDGAR
accession 0001193125-26-241867
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