Patrick O'Brien

Chief Operating Officer, See Remarks, Greenlight Capital Re, Ltd.; COO, Arrowhead Pharmaceuticals

Bought, 12 months

$0.0M

Sold, 12 months

$3.2M

Companies

Latest trade

Jun 23, 2026

Companies

Greenlight Capital Re, Ltd.Chief Operating Officer, See Remarks −$0.0M Arrowhead PharmaceuticalsCOO −$3.1M

Trades

GLRE Sold 3,026 shares at $16.36 $0.0M Jun 23

ARWR Sold 49,493 shares at $63.11 · planned $3.1M Jan 5

Open-market trades from SEC Form 4 only: no grants, option exercises or gifts. People are matched by the name on their filings, so two people with the same name share this page. For information only — not investment advice.