Halozyme Therapeutics, Inc. (HALO) Insider Ownership

Historic Insider Ownership Trends

Halozyme Therapeutics's three largest insider shareholders as of March 23, 2026 are Helen Torley (President And Ceo, 767.78K shares), Connie Matsui (Director, 183.03K shares), Kenneth J Kelley (Director, 179.83K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Helen Torley President And Ceo 767,780 0 04 Mar, 2026
Connie Matsui 183,035 0 03 Dec, 2024
Kenneth J Kelley 179,833 0 14 Apr, 2021
Michael J. Labarre Svp, Chief Technical Officer 173,756 0 27 Feb, 2025
Matthew L. Posard 74,039 0 02 May, 2025
Jean-Pierre Bizzari 66,815 0 09 May, 2023
Mark Howard Snyder Svp, Chief Legal Officer 47,610 0 24 Feb, 2026
Bernadette Connaughton 40,123 0 06 Jan, 2026
Nicole Labrosse Svp, Chief Financial Officer 38,494 0 24 Feb, 2026
Jeffrey William Henderson 32,776 0 02 May, 2025
Akiko Moni Miyashita 24,937 0 02 May, 2025
James M Daly 20,503 0 15 Aug, 2023
Masaru Matsuda Svp, General Counsel 20,049 0 07 Sep, 2021
Barbara Gayle Duncan 19,919 0 02 May, 2025
Elaine D Sun Svp, Chief Financial Officer 14,018 0 01 Apr, 2021
Mahesh Krishnan 10,666 0 02 May, 2025
Cortney Caudill Svp, Chief Operating Officer 7,055 0 10 Mar, 2026
James Paul Lang 889 0 06 Jan, 2026

* 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
09 Mar, 2026 Cortney Caudill Common Stock A 20,000 $33.51 34,366 D M
09 Mar, 2026 Cortney Caudill Common Stock D 17,900 $67.75 16,466 D S
09 Mar, 2026 Cortney Caudill Common Stock D 2,100 $68.25 14,366 D S
10 Mar, 2026 Cortney Caudill Common Stock A 1,546 $33.51 15,912 D M
10 Mar, 2026 Cortney Caudill Common Stock D 8,857 $67.64 7,055 D S
09 Mar, 2026 Cortney Caudill Option to Purchase Common Stock D 20,000 $33.51 69,224 D M
10 Mar, 2026 Cortney Caudill Option to Purchase Common Stock D 1,546 $33.51 67,678 D M
02 Mar, 2026 Helen Torley Common Stock A 20,000 $12.07 787,780 D M
02 Mar, 2026 Helen Torley Common Stock D 4,100 $69.20 783,680 D S
02 Mar, 2026 Helen Torley Common Stock D 15,322 $69.80 768,358 D S
02 Mar, 2026 Helen Torley Common Stock D 578 $70.46 767,780 D S
03 Mar, 2026 Helen Torley Common Stock A 20,000 $12.07 787,780 D M
03 Mar, 2026 Helen Torley Common Stock D 13,481 $68.85 774,299 D S
03 Mar, 2026 Helen Torley Common Stock D 6,519 $69.33 767,780 D S
04 Mar, 2026 Helen Torley Common Stock A 10,000 $12.07 777,780 D M
04 Mar, 2026 Helen Torley Common Stock D 7,329 $69.94 770,451 D S
04 Mar, 2026 Helen Torley Common Stock D 2,671 $70.95 767,780 D S
02 Mar, 2026 Helen Torley Option to Purchase Common Stock D 20,000 $12.07 181,923 D M
03 Mar, 2026 Helen Torley Option to Purchase Common Stock D 20,000 $12.07 161,923 D M
04 Mar, 2026 Helen Torley Option to Purchase Common Stock D 10,000 $12.07 151,923 D M