http://archive.fast-edgar.com/20260903/AG22N222N22262Z2222R2C4Z76B3G2P2B282
Filed on: September 3, 2026
Filed pursuant to Rule 424(b)(3) Registration No. 333-294900
PROSPECTUS SUPPLEMENT
(To the Prospectus Dated April 14, 2026)
This prospectus supplement updates, amends and supplements the prospectus dated April 14, 2026 (the “Prospectus”), which forms a part of our Registration Statement on Form S-1 (Registration No. 333-294900). Capitalized terms used in this prospectus supplement and not otherwise defined herein have the meanings specified in the... (continue reading...)
UNITED STATESSECURITIES AND EXCHANGE COMMISSIONWASHINGTON, D.C. 20549
FORM 8-K
CURRENT REPORT
Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
Date of Report (Date of earliest event reported): September 03, 2026
APTEVO THERAPEUTICS INC.
(Exact name of Registrant as Specified in Its Charter)
Delaware
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