Halozyme Therapeutics Ownership & Insider Activity

Halozyme Therapeutics (HALO) institutional and insider ownership, recent insider transactions and ownership breakdown.

Insiders own 9.9% of shares outstanding. Institutional investors hold 73.8%. Over the past 90 days, insiders made 3 sales worth $2.8M.

Shares Outstanding

113.498M

Shares Float

86.585M

Insider Shares Owned

11.247M

Insider % Owned

9.9%

Institutional Shares Held

83.766M

Institutional % Held

73.8%

Ownership Breakdown

Net Insider Activity by Month

Purchases (90d)

Sales (90d)

$2.8M total

Net Activity

Net Selling

Net Value (90d)

-$2.8M

Halozyme Therapeutics Insider Transactions (Last 6 Months)

Date	Insider	Title	Type	Shares	Price	Value
Oct 6, 2026	Helen Torley	PRESIDENT AND CEO	SELL-OPTIONS	—	$64.29	$5.5M
Oct 1, 2026	Matthew Posard	DIRECTOR	SELL	5.230K	$108.54	$568K
Sep 16, 2026	Matthew Posard	DIRECTOR	SELL	18.996K	$107.74	$2.0M
Sep 9, 2026	Helen Torley	PRESIDENT AND CEO	SELL-OPTIONS	—	$62.84	$5.3M
Aug 17, 2026	Helen Torley	PRESIDENT AND CEO	SELL-OPTIONS	—	$61.50	$5.2M
Aug 10, 2026	Bernadette Connaughton	DIRECTOR	SELL	1.626K	$102.80	$167K
Jul 8, 2026	Helen Torley	PRESIDENT AND CEO	SELL-OPTIONS	—	$45.92	$130K
Jul 1, 2026	Bernadette Connaughton	DIRECTOR	SELL	1.625K	$76.71	$125K
Jun 29, 2026	Mahesh Krishnan	DIRECTOR	SELL-OPTIONS	—	$56.73	$267K
Jun 1, 2026	Helen Torley	PRESIDENT AND CEO	SELL-OPTIONS	—	$39.74	$2.8M
Jun 1, 2026	Bernadette Connaughton	DIRECTOR	SELL	1.625K	$66.21	$108K
May 11, 2026	Helen Torley	PRESIDENT AND CEO	SELL-OPTIONS	—	$40.37	$2.8M
May 1, 2026	Bernadette Connaughton	DIRECTOR	SELL	1.625K	$63.48	$103K

Date	Member	Party	Chamber	Action	Amount
Sep 29, 2026	Gilbert Ray Cisneros	D	House	Sale (Partial)	$1,001 - $15,000
Mar 9, 2026	Gilbert Ray Cisneros	D	House	Purchase	$1,001 - $15,000
Mar 24, 2025	Gilbert Ray Cisneros	D	House	Sale (Partial)	$1,001 - $15,000
Sep 9, 2024	Josh Gottheimer	D	House	Sale (Partial)	$1,001 - $15,000