Helen Torley - 09 Dec 2025 Form 4 Insider Report for HALOZYME THERAPEUTICS, INC. (HALO)

Role: PRESIDENT AND CEO, Director
Signature: /s/ James R. Oehler, Attorney-in-Fact
Issuer symbol: HALO
Transactions as of: 09 Dec 2025
Net transactions value: $0
Form type: 4
Filing time: 11 Dec 2025, 18:16:05 UTC
Previous filing: 01 Dec 2025
Next filing: 05 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Torley Helen	PRESIDENT AND CEO, Director	C/O HALOZYME THERAPEUTICS, INC., 12390 EL CAMINO REAL, SAN DIEGO	/s/ James R. Oehler, Attorney-in-Fact	11 Dec 2025	0001528185

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	HALO	Performance Stock Units	Award	$0	+165,522		$0.000000	165,522	09 Dec 2025	Common Stock	165,522	$0.000000	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents the grant of performance-based vesting Restricted Stock Units. Each Restricted Stock Unit represents a contingent right to receive one share of HALO common stock. The target number of Restricted Stock Units subject to the award is indicated. Up to two hundred percent (200%) of the target Restricted Stock Units could vest if the average closing price of HALO common stock over a period of 20 consecutive trading days during a four-year performance period following the grant of the award equals or exceeds certain price levels specified in the award (with 50% of target number of units vesting at $115 and an additional 50% of the target number of units vesting at each of $130, $145 and $170) and, in each case, only if the Reporting Person remains employed with the Registrant through the end of the performance period (subject to certain exceptions provided in the applicable award agreement).

Content

Represents the grant of performance-based vesting Restricted Stock Units. Each Restricted Stock Unit represents a contingent right to receive one share of HALO common stock. The target number of Restricted Stock Units subject to the award is indicated. Up to two hundred percent (200%) of the target Restricted Stock Units could vest if the average closing price of HALO common stock over a period of 20 consecutive trading days during a four-year performance period following the grant of the award equals or exceeds certain price levels specified in the award (with 50% of target number of units vesting at $115 and an additional 50% of the target number of units vesting at each of $130, $145 and $170) and, in each case, only if the Reporting Person remains employed with the Registrant through the end of the performance period (subject to certain exceptions provided in the applicable award agreement).