X0508 4 2025-12-10 0001534120 Avalo Therapeutics, Inc. AVTX 0002047607 Riley Jennifer C/O AVALO THERAPEUTICS, INC. 1500 LIBERTY RIDGE DRIVE, SUITE 321 WAYNE PA 19087 0 1 0 0 Chief Strategy Officer 0 Common Stock 2025-12-10 4 F 0 637 4.10 D 2655 D Includes 2,655 shares acquired pursuant to the Issuer's Employee Stock Purchase Plan as a part of this reporting transaction. /s/ Christopher Sullivan, by Power of Attorney 2025-12-12