Bank of America's Ownership in Aptevo Therapeutics Inc.

The filing discloses that Bank of America Corporation, along with its subsidiaries Bank of America N.A. and BofA Securities, Inc., collectively own 27 shares of common stock in Aptevo Therapeutics Inc. The ownership is reported as indirect, and the shares are held through temporary stock borrowings. The filing also includes footnotes clarifying the nature of the ownership and the relationship between the reporting entities. The period of report is September 30, 2025, and the document is signed by Andres Ortiz as the authorized signatory for all three entities.