Patrick O'Brien insider trades: Arrowhead Pharmaceuticals (ARWR) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Patrick reports to the SEC
Open-market buys and sales
11 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Jan 5, 2026 | ARWR | ↓ Sell | 49,493 | $63.11 | $3.1M | Direct | Jan 5, 2026 (0d) |
| Jan 7, 2025 | ARWR | ↓ Sell | 37,184 | $19.80 | $736K | Direct | Jan 7, 2025 (0d) |
| Jan 5, 2024 | ARWR | ↓ Sell | 33,190 | $34.36 | $1.1M | Direct | Jan 5, 2024 (0d) |
| Jan 5, 2023 | ARWR | ↓ Sell | 15,000 | $37.39 | $561K | Direct | Jan 6, 2023 (1d) |
| Jan 3, 2023 | ARWR | ↓ Sell | 17,500 | $38.33 | $671K | Direct | Jan 5, 2023 (2d) |
| Jan 5, 2022 | ARWR | ↓ Sell | 32,500 | $61.72 | $2.0M | Direct | Jan 7, 2022 (2d) |
| Feb 8, 2021 | ARWR | ↓ Sell | 90,000 | $88.46 | $8.0M | Direct | Feb 10, 2021 (2d) |
| Jan 6, 2021 | ARWR | ↓ Sell | 25,000 | $72.41 | $1.8M | Direct | Jan 7, 2021 (1d) |
| Jan 6, 2020 | ARWR | ↓ Sell | 14,625 | $60.12 | $879K | Direct | Jan 8, 2020 (2d) |
| May 28, 2019 | ARWR | ↓ Sell | 30,000 | $24.88 | $746K | Direct | May 29, 2019 (1d) |
| Jan 18, 2019 | ARWR | ↓ Sell | 72,000 | $14.43 | $1.0M | Direct | Jan 18, 2019 (0d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other ARWR insiders
Open-market trades in the last 12 months
About Patrick O'Brien's insider trades
Patrick O'Brien is COO at Arrowhead Pharmaceuticals (ARWR). Since Jan 18, 2019, Patrick has reported no open-market purchases and 11 sales worth $20.7M on SEC Form 4. In the last 12 months: 1 sale ($3.1M).
Their filings also include grants and awards (12 filings), gifts (3 filings), option exercises (3 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every ARWR insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.