Aptevo Therapeutics(APVO) - 2025 Q1 - Quarterly Results

Exhibit 1.1 AT THE MARKET OFFERING AGREEMENT April 28, 2025 Roth Capital Partners, LLC 888 San Clemente Drive, Suite 400 Newport Beach, CA 92660 Ladies and Gentlemen: Aptevo Therapeutics Inc., a corporation organized under the laws of Delaware (the "Company"), confirms its agreement (this "Agreement") with Roth Capital Partners, LLC (the "Manager") as follows: "Action" shall have the meaning ascribed to such term in Section 3(p). "Affiliate" shall have the meaning ascribed to such term in Section 3(o). "App ...