William D. Waddill

Director, Protagonist Therapeutics, Inc; Director, Arrowhead Pharmaceuticals

Bought, 12 months

$0.0M

Sold, 12 months

$5.2M

Companies

Latest trade

Jun 23, 2026

Companies

Protagonist Therapeutics, IncDirector −$5.6M Arrowhead PharmaceuticalsDirector −$0.6M

Trades

PTGX Sold 9,000 shares at $117.94 · planned $1.1M Jun 23

PTGX Sold 9,000 shares at $107.68 · planned $1.0M Jun 10

PTGX Sold 9,000 shares at $99.64 · planned $0.9M May 29

PTGX Sold 20,000 shares at $83.68 $1.7M Feb 6

ARWR Sold 8,367 shares at $67.65 · planned $0.6M Dec 19

PTGX Sold 12,000 shares at $81.62 · planned $1.0M Oct 10

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.