Halozyme Therapeutics, Inc. (HALO) Insider Ownership

Historic Insider Ownership Trends

As of April 17, 2026, the three largest insider holders of HALO are Helen Torley (President And Ceo, 767.78K shares), Helen Torley (President And Ceo, 767.78K shares), Connie Matsui (Director, 188.19K 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 02 Apr, 2026
Helen Torley President And Ceo 767,780 0 07 Apr, 2026
Connie Matsui - 188,189 0 06 May, 2022
Connie Matsui - 183,035 0 03 Dec, 2024
Michael J. Labarre Svp, Chief Technical Officer 173,756 0 27 Feb, 2025
Michael J. Labarre Svp, Chief Technical Officer 173,756 0 27 Feb, 2025
Matthew L. Posard - 135,189 0 06 May, 2022
Matthew L. Posard - 74,039 0 02 May, 2025
Jean-Pierre Bizzari - 66,815 0 09 May, 2023
Jean-Pierre Bizzari - 58,750 0 06 May, 2022
Mark Howard Snyder Svp, Chief Legal Officer 47,610 0 24 Feb, 2026
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
Nicole Labrosse Svp, Chief Financial Officer 38,494 0 24 Feb, 2026
Bernadette Connaughton - 38,219 0 06 May, 2022
James M Daly - 32,438 0 06 May, 2022
Akiko Moni Miyashita - 24,937 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
Masaru Matsuda Svp, General Counsel 20,049 0 07 Sep, 2021
Barbara Gayle Duncan - 19,919 0 02 May, 2025
Mahesh Krishnan - 10,666 0 02 May, 2025
Mahesh Krishnan - 10,666 0 02 May, 2025
Cortney Caudill Svp, Chief Operating Officer 7,055 0 10 Mar, 2026
Akiko Moni Miyashita - 6,206 0 06 May, 2022
Akiko Moni Miyashita - 6,206 0 06 May, 2022
James Paul Lang - 889 0 06 Jan, 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
06 Apr, 2026 Helen Torley Common Stock A 10,000 $12.07 777,780 D M
06 Apr, 2026 Helen Torley Common Stock D 5,900 $63.14 771,880 D S
06 Apr, 2026 Helen Torley Common Stock D 4,100 $64.02 767,780 D S
06 Apr, 2026 Helen Torley Option to Purchase Common Stock D 10,000 $12.07 101,923 D M
01 Apr, 2026 Helen Torley Common Stock A 20,000 $12.07 787,780 D M
01 Apr, 2026 Helen Torley Common Stock D 19,000 $65.36 768,780 D S
01 Apr, 2026 Helen Torley Common Stock D 1,000 $65.71 767,780 D S
02 Apr, 2026 Helen Torley Common Stock A 20,000 $12.07 787,780 D M
02 Apr, 2026 Helen Torley Common Stock D 15,800 $64.06 771,980 D S
02 Apr, 2026 Helen Torley Common Stock D 4,200 $64.89 767,780 D S
01 Apr, 2026 Helen Torley Option to Purchase Common Stock D 20,000 $12.07 131,923 D M
02 Apr, 2026 Helen Torley Option to Purchase Common Stock D 20,000 $12.07 111,923 D M
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