Halozyme Therapeutics, Inc. (HALO) Insider Ownership

Historic Ownership Trends

There are no significant Insider Shareholders in Halozyme Therapeutics as of December 12, 2025.

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares Report Date
Helen Torley President And CEO 708,719 01 Dec, 2025
Connie Matsui 183,035 03 Dec, 2024
Kenneth J Kelley 179,833 14 Apr, 2021
Michael J. Labarre SVP And Chief Technical Officer 173,756 27 Feb, 2025
Matthew L. Posard 74,039 02 May, 2025
Jean-Pierre Bizzari 66,815 09 May, 2023
Bernadette Connaughton 42,123 01 Dec, 2025
Jeffrey William Henderson 32,776 02 May, 2025
Mark Howard Snyder SVP And Chief Legal Officer 30,813 13 Jun, 2025
Akiko Moni Miyashita 24,937 02 May, 2025
Nicole Labrosse SVP And Chief Financial Officer 22,079 23 Sep, 2025
James M Daly 20,503 15 Aug, 2023
Masaru Matsuda SVP And General Counsel 20,049 07 Sep, 2021
Barbara Gayle Duncan 19,919 02 May, 2025
Elaine D Sun SVP And Chief Financial Officer 14,018 01 Apr, 2021
Mahesh Krishnan 10,666 02 May, 2025

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
01 Dec, 2025 Bernadette Connaughton Common Stock D 829 $71.60 42,123 D S
26 Nov, 2025 Helen Torley Common Stock D 25,000 $0.00 708,719 D G
01 Dec, 2025 Helen Torley Common Stock A 16,569 $8.11 725,288 D M
01 Dec, 2025 Helen Torley Common Stock D 10,406 $68.51 714,882 D S
01 Dec, 2025 Helen Torley Common Stock D 5,402 $69.44 709,480 D S
01 Dec, 2025 Helen Torley Common Stock D 500 $70.36 708,980 D S
01 Dec, 2025 Helen Torley Common Stock D 261 $71.60 708,719 D S
10 Nov, 2025 Bernadette Connaughton Common Stock D 2,000 $68.48 42,952 D S
10 Nov, 2025 Helen Torley Common Stock A 20,000 $8.11 753,719 D M
10 Nov, 2025 Helen Torley Common Stock D 19,900 $68.71 733,819 D S
10 Nov, 2025 Helen Torley Common Stock D 100 $69.30 733,719 D S
11 Nov, 2025 Helen Torley Common Stock A 20,000 $8.11 753,719 D M
11 Nov, 2025 Helen Torley Common Stock D 4,500 $67.89 749,219 D S
11 Nov, 2025 Helen Torley Common Stock D 4,000 $68.80 745,219 D S
11 Nov, 2025 Helen Torley Common Stock D 11,500 $69.73 733,719 D S
12 Nov, 2025 Helen Torley Common Stock A 20,000 $8.11 753,719 D M
12 Nov, 2025 Helen Torley Common Stock D 12,718 $70.22 741,001 D S
12 Nov, 2025 Helen Torley Common Stock D 6,784 $71.09 734,217 D S
12 Nov, 2025 Helen Torley Common Stock D 498 $71.67 733,719 D S
01 Oct, 2025 Bernadette Connaughton Common Stock D 1,500 $75.09 45,452 D S