| 2005-04-21 | Sale | Arrowhead Pharmaceuticals, Inc. ARWR | 10 percent owner | 1.02M 5.6347% | $3.27 | $3.35M | -3.85% | |
| 2004-12-24 | Sale | Arrowhead Pharmaceuticals, Inc. ARWR | 10 percent owner | 20,400 0.1473% | $4.53 | $92,355 | ||
| 2004-12-23 | Sale | Arrowhead Pharmaceuticals, Inc. ARWR | 10 percent owner | 71,600 0.515% | $4.51 | $322,801 | -33% | |
| 2004-12-21 | Sale | Arrowhead Pharmaceuticals, Inc. ARWR | 10 percent owner | 70,000 0.5286% | $4.48 | $313,677 | -29.23% | |
| 2004-12-20 | Sale | Arrowhead Pharmaceuticals, Inc. ARWR | 10 percent owner | 64,000 0.4646% | $4.40 | $281,453 | -30.68% | |
| 2004-12-17 | Sale | Arrowhead Pharmaceuticals, Inc. ARWR | 10 percent owner | 46,000 0.346% | $4.43 | $203,918 | -28.79% |