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Halozyme (HALO) CEO Torley exercises 50K options and sells 50K shares under 10b5-1 plan

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

HALOZYME THERAPEUTICS, INC. CEO Helen Torley reported a series of option exercises and related share sales in May. Over May 11–13, she exercised options to acquire 50,000 shares of common stock at $12.07 per share and sold 50,000 shares in open-market trades at prices generally in the mid‑$60s to low‑$70s per share. The filing notes these transactions were carried out under a pre-arranged Rule 10b5-1 trading plan adopted on March 21, 2025 and that the sales relate to options with a ten-year term expiring in February 2027. Following the reported transactions, she directly holds 777,780 shares of common stock and retains vested options to purchase 51,923 shares.

Positive

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Insider Torley Helen
Role PRESIDENT AND CEO
Sold 50,000 shs ($3.43M)
Type Security Shares Price Value
Exercise Option to Purchase Common Stock 10,000 $12.07 $121K
Exercise Common Stock 10,000 $12.07 $121K
Sale Common Stock 2,100 $68.102 $143K
Sale Common Stock 3,350 $68.88 $231K
Sale Common Stock 3,950 $69.787 $276K
Sale Common Stock 600 $70.812 $42K
Exercise Option to Purchase Common Stock 20,000 $12.07 $241K
Exercise Common Stock 20,000 $12.07 $241K
Sale Common Stock 100 $67.85 $7K
Sale Common Stock 1,398 $70.287 $98K
Sale Common Stock 9,802 $71.37 $700K
Sale Common Stock 5,900 $72.148 $426K
Sale Common Stock 2,800 $73.121 $205K
Exercise Option to Purchase Common Stock 20,000 $12.07 $241K
Exercise Common Stock 20,000 $12.07 $241K
Sale Common Stock 9,725 $64.631 $629K
Sale Common Stock 3,575 $65.458 $234K
Sale Common Stock 6,700 $66.327 $444K
Holdings After Transaction: Option to Purchase Common Stock — 51,923 shares (Direct, null); Common Stock — 777,780 shares (Direct, null)
Footnotes (1)
  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. Represents a weighted average sales price per share. The shares were sold at prices ranging from $64.030 to $65.010. 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. Represents a weighted average sales price per share. The shares were sold at prices ranging from $65.030 to $66.010. 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. Represents a weighted average sales price per share. The shares were sold at prices ranging from $66.040 to $66.720. 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. Represents a weighted average sales price per share. The shares were sold at prices ranging from $69.740 to $70.700. 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. Represents a weighted average sales price per share. The shares were sold at prices ranging from $70.800 to $71.795 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. Represents a weighted average sales price per share. The shares were sold at prices ranging from $71.805 to $72.780. 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. Represents a weighted average sales price per share. The shares were sold at prices ranging from $72.810 to $73.770. 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. Represents a weighted average sales price per share. The shares were sold at prices ranging from $67.450 to $68.440. 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. Represents a weighted average sales price per share. The shares were sold at prices ranging from $68.450 to $69.440. 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. Represents a weighted average sales price per share. The shares were sold at prices ranging from $69.450 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. Represents a weighted average sales price per share. The shares were sold at prices ranging from $70.480 to $71.220. 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. 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.
Shares sold 50,000 shares Total Halozyme common shares sold May 11–13, 2026
Options exercised 50,000 shares Common stock acquired via option exercises May 11–13, 2026
Option exercise price $12.07 per share Exercise price for options converted into common stock
Post-transaction holdings 777,780 shares Common stock directly held by CEO after transactions
Remaining options 51,923 options Options to purchase common stock after reported exercises
Sale price example $73.121 per share One reported open-market sale price on May 12, 2026
Rule 10b5-1 regulatory
"made pursuant to a written trading plan adopted by the Reporting Person on March 21, 2025 in accordance with Rule 10b5-1"
Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.
stock options financial
"shares that were acquired following exercise of stock options with a ten-year term expiring in February 2027"
Stock options are agreements that give a person the right to buy or sell a company's stock at a specific price within a certain time frame. They are often used as a reward or incentive, similar to a coupon that can be used later if the stock price rises, allowing the holder to make a profit.
weighted average sales price per share financial
"Represents a weighted average sales price per share. The shares were sold at prices ranging from"
derivative security financial
"transaction_code_description": "Exercise or conversion of derivative security""
A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.
Option to Purchase Common Stock financial
""security_title": "Option to Purchase Common Stock""
ten-year term financial
"stock options with a ten-year term expiring in February 2027"
SEC Form 4
FORM 4UNITED 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
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
X
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)
XDirector10% Owner
XOfficer (give title below)Other (specify below)
PRESIDENT AND CEO
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/11/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock05/11/2026M(1)20,000A$12.07787,780D
Common Stock05/11/2026S(1)9,725D$64.631(2)778,055D
Common Stock05/11/2026S(1)3,575D$65.458(3)774,480D
Common Stock05/11/2026S(1)6,700D$66.327(4)767,780D
Common Stock05/12/2026M(1)20,000A$12.07787,780D
Common Stock05/12/2026S(1)100D$67.85787,680D
Common Stock05/12/2026S(1)1,398D$70.287(5)786,282D
Common Stock05/12/2026S(1)9,802D$71.37(6)776,480D
Common Stock05/12/2026S(1)5,900D$72.148(7)770,580D
Common Stock05/12/2026S(1)2,800D$73.121(8)767,780D
Common Stock05/13/2026M10,000A$12.07777,780D
Common Stock05/13/2026S(1)2,100D$68.102(9)775,680D
Common Stock05/13/2026S(1)3,350D$68.88(10)772,330D
Common Stock05/13/2026S(1)3,950D$69.787(11)768,380D
Common Stock05/13/2026S(1)600D$70.812(12)767,780D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Option to Purchase Common Stock$12.0705/11/2026M20,000 (13)02/22/2027Common Stock20,000$12.0781,923D
Option to Purchase Common Stock$12.0705/12/2026M20,000 (13)02/22/2027Common Stock20,000$12.0761,923D
Option to Purchase Common Stock$12.0705/13/2026M10,000 (13)02/22/2027Common Stock10,000$12.0751,923D
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 $64.030 to $65.010. 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 $65.030 to $66.010. 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 $66.040 to $66.720. 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 $69.740 to $70.700. 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 $70.800 to $71.795 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 $71.805 to $72.780. 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 $72.810 to $73.770. 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.
9. Represents a weighted average sales price per share. The shares were sold at prices ranging from $67.450 to $68.440. 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 $68.450 to $69.440. 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. Represents a weighted average sales price per share. The shares were sold at prices ranging from $69.450 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.
12. Represents a weighted average sales price per share. The shares were sold at prices ranging from $70.480 to $71.220. 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.
13. 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-Fact05/13/2026
** Signature of Reporting PersonDate
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)

FAQ

What did HALO (Halozyme Therapeutics) CEO Helen Torley report in this Form 4?

Helen Torley reported exercising stock options and selling common shares. She exercised 50,000 options at $12.07 and sold 50,000 shares in open-market trades, all under a pre-arranged Rule 10b5-1 trading plan adopted in March 2025.

How many Halozyme (HALO) shares did the CEO sell and at what prices?

The CEO sold 50,000 shares of Halozyme common stock. The reported open-market sale prices were generally in the mid-$60s to low-$70s per share, including individual trades such as 2,800 shares at $73.121 and 9,725 shares at $64.631.

What stock options did the Halozyme CEO exercise in this filing?

Helen Torley exercised options covering 50,000 shares of Halozyme common stock at an exercise price of $12.07 per share. These options were part of a grant dated February 22, 2017 and had a ten-year term expiring in February 2027.

How many Halozyme (HALO) shares does the CEO hold after these transactions?

After the reported transactions, Helen Torley directly holds 777,780 shares of Halozyme common stock. This post-transaction holding reflects both the exercised options and the open-market sales disclosed across May 11, May 12, and May 13, 2026.

Does the Halozyme CEO still have stock options after these exercises?

Yes. Following the exercises reported, Helen Torley retains vested options to purchase 51,923 shares of Halozyme common stock. This remaining option balance is shown as the total options following the last derivative transaction in the Form 4 data.

Were Helen Torley’s Halozyme share sales made under a Rule 10b5-1 plan?

Yes. The filing states the options exercised and sales were made under a written trading plan adopted on March 21, 2025 in accordance with Rule 10b5-1, indicating the transactions were pre-arranged rather than opportunistic.