InsidersTradesSigma
Total declarations
Companies
▲ Purchases (0 ops.)
▼ Sales (8 ops.)
Insider track record
ExecutiveDisclosed buys
0
Disclosed sells
8
T+90 hit rate
40%
T+90 mean return
-13.4%
Across 5 buy signals with a settled T+90 return. Return basis: close on the day after publication.
Signal history
Browse the detailed record of transactions filed by O'Brien Patrick, Chief Operating Officer. Director active across 2 companies, notably Arrowhead Pharmaceuticals, INC.. Cumulatively, 15 disclosures have been recorded. Breakdown: 0 buy · 8 sells. Total volume traded: €2.5m. History available since 31 December 2021. The latest transaction was filed on 31 December 2025 (Don). Regulator: SEC (Form 4). The full history is free.
Declarations15 total
560 shares0Common StockSEC:0001627183-26-000001:0
560 shares0Common StockSEC:0001627183-26-000001
100,000 shares0Common StockSEC:0001628280-25-000806:0
19,658 shares@ US$19.6912.5% of flowCommon StockSEC:0001628280-25-000806:1
9,526 shares@ US$20.106.2% of flowCommon StockSEC:0001628280-25-000806:2
8,000 shares@ US$19.695.0% of flowCommon StockSEC:0001628280-25-000806:3
3,849 shares@ US$31.833.7% of flowCommon StockSEC:0001628280-24-000744:0
7,500 shares@ US$37.398.8% of flowCommon StockSEC:0001209191-23-002481:0
2,653 shares@ US$37.533.1% of flowCommon StockSEC:0001209191-23-002114:0
32,000 shares@ US$6.156.2% of flowCommon StockSEC:0001209191-22-062530:0
16,781 shares0CLASS A ORDINARY SHARESSEC:0001385613-22-000049:0
12,434 shares@ US$60.490.0062% mcap81.4% of flowCommon StockSEC:0001209191-22-002599
12,434 shares@ US$60.490.0062% mcap40.7% of flowCommon StockSEC:0001209191-22-002599:0
28,000 shares@ US$6.150.0014% mcap18.6% of flowCommon StockSEC:0001209191-22-001308
28,000 shares@ US$6.150.0014% mcap9.3% of flowCommon StockSEC:0001209191-22-001308:0
15 of 15 declarations
About O'Brien Patrick
Patrick O'Brien serves as Chief Operating Officer and General Counsel at ARROWHEAD PHARMACEUTICALS, INC. He oversees the daily operations of the company while ensuring legal and regulatory compliance. Patrick brings valuable expertise in risk management and business strategy, contributing to Arrowhead's mission of developing innovative therapies. His role is essential in ensuring operational efficiency and protecting the company's interests.
