O'Brien Patrick insider trades
O'Brien Patrick has filed 9 Form 4s with the SEC that we hold, all for Arrowhead Pharmaceuticals, INC. (ARWR), as COO. Across all of them we count 0 purchases worth $0 and 37 sales worth $8.0M reported on Form 4. In the last 12 months: 0 purchases ($0) and 12 sales ($3.1M). The largest single trade was a sale of 13,451 shares of Arrowhead Pharmaceuticals, INC. worth $846.9K, dated 2026-01-05. The first filing on our record is dated 2022-01-04 and the latest 2026-01-08.
Arrowhead Pharmaceuticals, INC. (ARWR)
| Trade date | Code | Shares | Value as filed | Filed |
|---|---|---|---|---|
| 2022-01-05 | S, sale reported on Form 4 | 10,350 | $640.5K | 2022-01-07 |
| 2022-01-05 | S, sale reported on Form 4 | 5,000 | $312.4K | 2022-01-07 |
| 2022-01-05 | S, sale reported on Form 4 | 4,400 | $280.5K | 2022-01-07 |
| 2022-01-05 | S, sale reported on Form 4 | 12,434 | $752.1K | 2022-01-07 |
| 2022-01-05 | S, sale reported on Form 4 | 316 | $20.3K | 2022-01-07 |
| 2023-01-03 | S, sale reported on Form 4 | 5,286 | $203.9K | 2023-01-05 |
| 2023-01-03 | S, sale reported on Form 4 | 300 | $11.9K | 2023-01-05 |
| 2023-01-03 | S, sale reported on Form 4 | 270 | $10.9K | 2023-01-05 |
| 2023-01-03 | S, sale reported on Form 4 | 2,653 | $99.6K | 2023-01-05 |
| 2023-01-03 | S, sale reported on Form 4 | 2,894 | $108.8K | 2023-01-05 |
| 2023-01-03 | S, sale reported on Form 4 | 5,527 | $213.0K | 2023-01-05 |
| 2023-01-03 | S, sale reported on Form 4 | 500 | $19.9K | 2023-01-05 |
| 2023-01-03 | S, sale reported on Form 4 | 70 | $2.9K | 2023-01-05 |
| 2023-01-05 | S, sale reported on Form 4 | 7,500 | $280.4K | 2023-01-06 |
| 2024-01-03 | S, sale reported on Form 4 | 3,849 | $122.5K | 2024-01-05 |
| 2024-01-03 | S, sale reported on Form 4 | 2,800 | $91.1K | 2024-01-05 |
| 2024-01-03 | S, sale reported on Form 4 | 400 | $13.4K | 2024-01-05 |
| 2024-01-03 | S, sale reported on Form 4 | 1,700 | $55.5K | 2024-01-05 |
| 2024-01-04 | S, sale reported on Form 4 | 1,600 | $52.2K | 2024-01-05 |
| 2024-01-05 | S, sale reported on Form 4 | 12,741 | $454.2K | 2024-01-05 |
| 2024-01-05 | S, sale reported on Form 4 | 1,900 | $64.6K | 2024-01-05 |
| 2024-01-05 | S, sale reported on Form 4 | 8,200 | $286.9K | 2024-01-05 |
| 2025-01-06 | S, sale reported on Form 4 | 19,658 | $387.1K | 2025-01-07 |
| 2025-01-06 | S, sale reported on Form 4 | 9,526 | $191.5K | 2025-01-07 |
| 2025-01-07 | S, sale reported on Form 4 | 8,000 | $157.5K | 2025-01-07 |
| 2026-01-05 | S, sale reported on Form 4 | 46 | $3.1K | 2026-01-05 |
| 2026-01-05 | S, sale reported on Form 4 | 4,368 | $267.3K | 2026-01-05 |
| 2026-01-05 | S, sale reported on Form 4 | 6,164 | $383.6K | 2026-01-05 |
| 2026-01-05 | S, sale reported on Form 4 | 13,451 | $846.9K | 2026-01-05 |
| 2026-01-05 | S, sale reported on Form 4 | 11,842 | $756.0K | 2026-01-05 |
| 2026-01-05 | S, sale reported on Form 4 | 2,700 | $174.0K | 2026-01-05 |
| 2026-01-05 | S, sale reported on Form 4 | 900 | $59.4K | 2026-01-05 |
| 2026-01-05 | S, sale reported on Form 4 | 313 | $21.3K | 2026-01-05 |
| 2026-01-05 | S, sale reported on Form 4 | 600 | $36.7K | 2026-01-05 |
| 2026-01-05 | S, sale reported on Form 4 | 900 | $56.0K | 2026-01-05 |
| 2026-01-05 | S, sale reported on Form 4 | 5,873 | $369.5K | 2026-01-05 |
| 2026-01-05 | S, sale reported on Form 4 | 2,336 | $149.6K | 2026-01-05 |
Counted from the Form 4 filings this reporting owner (SEC CIK 1627183) filed on EDGAR. Values are the transaction values as filed. See every filing on EDGAR, or browse insider buying and today's insider purchases.
Source: U.S. Securities and Exchange Commission (EDGAR) and other official
government data · Updated 2026-10-12 ·
For informational purposes only, not investment advice.
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