O'Brien Patrick
- SEC CIK
- 0001627183
In the past year, 1 open-market sale filing worth $3.12M and no purchases.
Current role at each company
- ARWR Arrowhead Pharmaceuticals, Inc.COOas of Jan 8, 2026
Open-market trades in the past year
Open-market purchases (P) and sales (S) filed in the last 365 days, not counting derivative securities or duplicate filings. Values leave out price outliers.
- Bought
- –
- 0 filings
- Sold
- $3.12M
- 1 filing
- Net
- −$3.12M
- Bought minus sold
- Companies
- 1
- With open-market trades
Trades
Every Form 4 that lists O'Brien Patrick as a reporting owner, including filings made jointly with others, grouped by company. Each row adds up one type of transaction in one filing. Only open-market purchases (P) and sales (S) are shown by default.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Jan 5, 2026 (view filing) | Jan 5 | Same day | O'Brien PatrickCOO | SSale | −49.5K | $63.11 | −$3.12M | −9.4%474.9K after | 12 lots10b5-1 |
| Jan 7, 2025 (view filing) | Jan 6-7 | 1 day | O'Brien PatrickCOO and General Counsel | SSale | −37.2K | $19.80 | −$736.1K | −6.6%527.2K after | 3 lots10b5-1 |
| Jan 5, 2024 (view filing) | Jan 3-5 | 2 days | O'Brien PatrickCOO and General Counsel | SSale | −33.2K | $34.36 | −$1.14M | −6.7%464.4K after | 8 lots10b5-1 |
| Jan 6, 2023 (view filing) | Jan 5 | 1 day | O'Brien PatrickCOO and General Counsel | SSale | −15.0K | $37.39 | −$560.9K | −3.5%413.4K after | 2 lots |
| Jan 5, 2023 (view filing) | Jan 3 | 2 days | O'Brien PatrickCOO and General Counsel | SSale | −17.5K | $38.33 | −$670.8K | −4.6%363.4K after | 8 lots |
| Jan 7, 2022 (view filing) | Jan 5 | 2 days | O'Brien PatrickGeneral Counsel | SSale | −32.5K | $61.72 | −$2.01M | −8.5%348.9K after | 5 lots |