SEC FORM 4

SEC FORM 4SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Torley Helen

(Last)

(First)

(Middle)

C/O HALOZYME THERAPEUTICS, INC.

12390 EL CAMINO REAL

(Street)

SAN DIEGO

CALIFORNIA

92130

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
HALOZYME THERAPEUTICS, INC. [ HALO ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	PRESIDENT AND CEO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/01/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	06/01/2026		M⁽¹⁾		20,000	A	$12.07	787,780	D
Common Stock	06/01/2026		S⁽¹⁾		1,610	D	$66.388⁽²⁾	786,170	D
Common Stock	06/01/2026		S⁽¹⁾		12,989	D	$67.41⁽³⁾	773,181	D
Common Stock	06/01/2026		S⁽¹⁾		5,401	D	$68.346⁽⁴⁾	767,780	D
Common Stock	06/02/2026		M⁽¹⁾		20,000	A	$12.07	787,780	D
Common Stock	06/02/2026		S⁽¹⁾		16,600	D	$66.314⁽⁵⁾	771,180	D
Common Stock	06/02/2026		S⁽¹⁾		3,400	D	$66.745⁽⁶⁾	767,780	D
Common Stock	06/03/2026		M⁽¹⁾		10,000	A	$12.07	777,780	D
Common Stock	06/03/2026		S⁽¹⁾		400	D	$66.368⁽⁷⁾	777,380	D
Common Stock	06/03/2026		S⁽¹⁾		1,500	D	$67.675⁽⁸⁾	775,880	D
Common Stock	06/03/2026		S⁽¹⁾		2,000	D	$68.736⁽⁹⁾	773,880	D
Common Stock	06/03/2026		S⁽¹⁾		6,100	D	$69.692⁽¹⁰⁾	767,780	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Option to Purchase Common Stock	$12.07	06/01/2026		M⁽¹⁾			20,000	⁽¹¹⁾	02/22/2027	Common Stock	20,000	$12.07	31,923	D
Option to Purchase Common Stock	$12.07	06/02/2026		M⁽¹⁾			20,000	⁽¹¹⁾	02/22/2027	Common Stock	20,000	$12.07	11,923	D
Option to Purchase Common Stock	$12.07	06/03/2026		M⁽¹⁾			10,000	⁽¹¹⁾	02/22/2027	Common Stock	10,000	$12.07	1,923	D

Explanation of Responses:

1. The options exercised and sales reported on this Form 4 were made pursuant to a written trading plan adopted by the Reporting Person on March 21, 2025 in accordance with Rule 10b5-1. The sales of common shares reported on this Form 4 represent shares that were acquired following exercise of stock options with a ten-year term expiring in February 2027.

2. Represents a weighted average sales price per share. The shares were sold at prices ranging from $65.840 to $66.830. The Reporting Person has provided to the issuer, and will provide to any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.

3. Represents a weighted average sales price per share. The shares were sold at prices ranging from $66.840 to $67.830. The Reporting Person has provided to the issuer, and will provide to any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.

4. Represents a weighted average sales price per share. The shares were sold at prices ranging from $67.840 to $68.820. The Reporting Person has provided to the issuer, and will provide to any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.

5. Represents a weighted average sales price per share. The shares were sold at prices ranging from $65.630 to $66.625. The Reporting Person has provided to the issuer, and will provide to any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.

6. Represents a weighted average sales price per share. The shares were sold at prices ranging from $66.630 to $67.180. The Reporting Person has provided to the issuer, and will provide to any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.

7. Represents a weighted average sales price per share. The shares were sold at prices ranging from $66.000 to $66.770. The Reporting Person has provided to the issuer, and will provide to any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.

8. Represents a weighted average sales price per share. The shares were sold at prices ranging from $67.090 to $68.000. The Reporting Person has provided to the issuer, and will provide to any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.

9. Represents a weighted average sales price per share. The shares were sold at prices ranging from $68.100 to $69.080. The Reporting Person has provided to the issuer, and will provide to any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.

10. Represents a weighted average sales price per share. The shares were sold at prices ranging from $69.120 to $70.050. The Reporting Person has provided to the issuer, and will provide to any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.

11. Grant to Reporting Person of options, exercisable over a 4-year period measured from the date of grant, 25% after 12 months, then 1/48th of the Option Shares per month thereafter. The date of grant was February 22, 2017.

Remarks:

	/s/ James R. Oehler, Attorney-in-Fact	06/03/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

PRESIDENT AND CEO Torley Helen sold $3,370,008 worth of shares (50,000 units at $67.40) as part of a pre-agreed trading plan and exercised 50,000 shares at a strike of $12.07 (SEC Form 4)