Wednesday, October 28, 2026
Data from SEC filings, checked daily
Public filings, plainly told
AboutMethodSourcesNewsletter
Insider tradingForm 4

HALOZYME THERAPEUTICS, INC. (HALO) Insider Trading

11 open-market trades reported since Aug 19, 2026: 0 purchases worth $0 and 11 sales worth $21.9M.

By insider

InsiderRoleBuysBoughtSellsSoldLatest
Helen TorleyCEO0$09$19.3MOct 8, 2026
Matthew L. PosardDirector0$02$2.61MOct 2, 2026

All trades

HALO insider trades
FiledTradedInsiderRoleTypeSharesPrice ($)ValueHolding3 mo. afterFiling
Oct 8Oct 7Helen TorleyCEOCEO▼ SELL10b5-120,000111.55$2.23M−2.5%Form 4 ↗
Oct 8Oct 6Helen TorleyCEOCEO▼ SELL10b5-120,000109.58$2.19M−2.5%Form 4 ↗
Oct 8Oct 8Helen TorleyCEOCEO▼ SELL10b5-120,000109.40$2.19M−2.5%Form 4 ↗
Oct 2Oct 1Matthew L. PosardDirectorDirector▼ SELL10b5-15,230108.54$568K−8.9%Form 4 ↗
Sep 17Sep 16Matthew L. PosardDirectorDirector▼ SELL10b5-118,996107.74$2.05M−24%Form 4 ↗
Sep 11Sep 9Helen TorleyCEOCEO▼ SELL10b5-120,000107.43$2.15M−2.5%Form 4 ↗
Sep 11Sep 11Helen TorleyCEOCEO▼ SELL10b5-120,000107.24$2.14M−2.5%Form 4 ↗
Sep 11Sep 10Helen TorleyCEOCEO▼ SELL10b5-120,000107.17$2.14M−2.5%Form 4 ↗
Aug 19Aug 19Helen TorleyCEOCEO▼ SELL10b5-120,000107.00$2.14M−2.5%Form 4 ↗
Aug 19Aug 18Helen TorleyCEOCEO▼ SELL10b5-120,000104.18$2.08M−2.5%Form 4 ↗
Aug 19Aug 17Helen TorleyCEOCEO▼ SELL10b5-120,000102.60$2.05M−2.5%Form 4 ↗
Source: SEC Form 4 filings, retrieved Oct 28, 2026. How we read filings