144 0002081169 XXXXXXXX LIVE 0000879407 Arrowhead Pharmaceuticals Inc. 177 E. Colorado Blvd Suite 700 Pasadena CA 91105 626-3043400 Daniel Apel Officer Common Merrill Lynch 75 Rockefeller Plaza New York NY 10019 13095 934206.16 140032190 04/22/2026 Nasdaq Common 04/15/2025 Bonus Daniel Apel N 100000 04/22/2026 Compensation Y 04/22/2026 Daniel Apel