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Halozyme (NASDAQ: HALO) CEO sells tens of thousands of shares

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Form Type
4

Rhea-AI Filing Summary

HALOZYME THERAPEUTICS, INC. (HALO) reported that President and CEO Helen Torley exercised stock options and sold common shares under a pre-arranged Rule 10b5-1 trading plan. Over August 17–19, 2026, she exercised options for 60,000 shares at $18.41 per share and sold 60,000 common shares in multiple open-market transactions at weighted-average prices generally between the high $90s and about $108 per share. The options exercised were part of a ten-year grant originally awarded in February 2018 and expiring in February 2028.

Positive

  • None.

Negative

  • None.
Insider Torley Helen
Role PRESIDENT AND CEO
Sold 60,000 shs ($6.28M)
Approx. gross sale proceeds $6.28M
Approx. exercise cost $1.10M
Approx. pre-tax spread $5.17M
Type Security Shares Price Value
Exercise Option to Purchase Common Stock F1, F13 20,000 $18.41 $368K
Exercise Common Stock F1 20,000 $18.41 $368K
Sale Common Stock F1, F10 7,200 $106.358 $766K
Sale Common Stock F1, F11 9,600 $107.224 $1.03M
Sale Common Stock F1, F12 3,200 $107.765 $345K
Exercise Option to Purchase Common Stock F1, F13 20,000 $18.41 $368K
Exercise Common Stock F1 20,000 $18.41 $368K
Sale Common Stock F1, F7 5,703 $103.083 $588K
Sale Common Stock F1, F8 4,897 $104.11 $510K
Sale Common Stock F1, F9 9,400 $104.874 $986K
Exercise Option to Purchase Common Stock F1, F13 20,000 $18.41 $368K
Exercise Common Stock F1 20,000 $18.41 $368K
Sale Common Stock F1, F2 900 $98.958 $89K
Sale Common Stock F1, F3 500 $100.457 $50K
Sale Common Stock F1, F4 2,100 $101.766 $214K
Sale Common Stock F1, F5 9,000 $102.553 $923K
Sale Common Stock F1, F6 7,500 $103.482 $776K
Holdings After Transaction: Option to Purchase Common Stock — 141,552 shares (Direct); Common Stock — 767,780 shares (Direct)
Footnotes (13)
  1. F1. The options exercised and sales reported on this Form 4 were made pursuant to a written trading plan adopted by the Reporting Person on December 3, 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 2028.
  2. F2. Represents a weighted average sales price per share. The shares were sold at prices ranging from $98.580 to $99.210. 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. F3. Represents a weighted average sales price per share. The shares were sold at prices ranging from $99.980 to $100.780. 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.
  4. F4. Represents a weighted average sales price per share. The shares were sold at prices ranging from $101.140 to $102.120. 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. F5. Represents a weighted average sales price per share. The shares were sold at prices ranging from $102.140 to $103.050. 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.
  6. F6. Represents a weighted average sales price per share. The shares were sold at prices ranging from $103.160 to $104.010. 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.
  7. F7. Represents a weighted average sales price per share. The shares were sold at prices ranging from $102.550 to $103.540. 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. F8. Represents a weighted average sales price per share. The shares were sold at prices ranging from $103.570 to $104.550. 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. F9. Represents a weighted average sales price per share. The shares were sold at prices ranging from $104.585 to $105.080 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. F10. Represents a weighted average sales price per share. The shares were sold at prices ranging from $105.69 to $106.680 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. F11. Represents a weighted average sales price per share. The shares were sold at prices ranging from $106.69 to $107.680 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. F12. Represents a weighted average sales price per share. The shares were sold at prices ranging from $107.69 to $107.900 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. F13. 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 14, 2018.
Options exercised 60,000 shares Total option shares exercised by Helen Torley over August 17–19, 2026
Shares sold 60,000 shares Total HALO common shares sold over August 17–19, 2026
Option exercise price $18.41 per share Exercise price for options converted into common stock
Sale price example $98.958 per share One reported weighted-average sales price on August 17, 2026
Highest reported weighted-average sale $107.765 per share Weighted-average sales price for a tranche on August 19, 2026
10b5-1 plan adoption date December 3, 2025 Date Helen Torley adopted the Rule 10b5-1 trading plan
Option grant date February 14, 2018 Original grant date of the exercised options
Option expiration February 2028 Stated expiration timing for the ten-year option grant
Rule 10b5-1 regulatory
"were made pursuant to a written trading plan adopted by the Reporting Person"
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.
weighted average sales price per share financial
"Represents a weighted average sales price per share. The shares were sold"
Exercise or conversion of derivative security financial
"transaction_code_description":"Exercise or conversion of derivative security"
derivative security financial
"transaction_type":"derivative","transaction_shares":"20000.0000""
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.

FAQ

What insider transactions did HALO (HALOZYME THERAPEUTICS, INC.) report for Helen Torley?

HALO reported that CEO Helen Torley exercised 60,000 options and sold 60,000 common shares over August 17–19, 2026. The activity combined option exercises at $18.41 with multiple open-market sales at higher weighted-average prices.

At what prices did Helen Torley sell HALO (HALOZYME) shares in this Form 4?

Torley’s reported sales used weighted-average prices per share generally between the high $90s and about $108. Individual footnotes state ranges such as $98.580–$99.210 and up to $107.69–$107.900, reflecting multiple trades within each range.

How many HALO (HALOZYME) options did Helen Torley exercise and at what strike price?

Torley exercised options covering a total of 60,000 shares of HALO common stock. Each exercise involved an option with an exercise price of $18.41 per share, converting into an equal number of common shares before subsequent sales.

Were Helen Torley’s HALO (HALOZYME) trades made under a Rule 10b5-1 plan?

Yes. The company reports that the option exercises and related sales were made under a written Rule 10b5-1 trading plan adopted on December 3, 2025. This indicates the transactions were pre-arranged rather than timed opportunistically.

What is the origin and term of the options Helen Torley exercised in HALO stock?

The options Torley exercised were granted on February 14, 2018 and have a ten-year term expiring in February 2028. They vest over four years, with 25% after 12 months and the remainder in equal monthly installments thereafter.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Learn about SEC filing dates
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)
08/17/2026
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 Stock08/17/2026M(1)20,000A$18.41787,780D
Common Stock08/17/2026S(1)900D$98.958(2)786,880D
Common Stock08/17/2026S(1)500D$100.457(3)786,380D
Common Stock08/17/2026S(1)2,100D$101.766(4)784,280D
Common Stock08/17/2026S(1)9,000D$102.553(5)775,280D
Common Stock08/17/2026S(1)7,500D$103.482(6)767,780D
Common Stock08/18/2026M(1)20,000A$18.41787,780D
Common Stock08/18/2026S(1)5,703D$103.083(7)782,077D
Common Stock08/18/2026S(1)4,897D$104.11(8)777,180D
Common Stock08/18/2026S(1)9,400D$104.874(9)767,780D
Common Stock08/19/2026M(1)20,000A$18.41787,780D
Common Stock08/19/2026S(1)7,200D$106.358(10)780,580D
Common Stock08/19/2026S(1)9,600D$107.224(11)770,980D
Common Stock08/19/2026S(1)3,200D$107.765(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$18.4108/17/2026M(1)20,000 (13)02/14/2028Common Stock20,000$18.41181,552D
Option to Purchase Common Stock$18.4108/18/2026M(1)20,000 (13)02/14/2028Common Stock20,000$18.41161,552D
Option to Purchase Common Stock$18.4108/19/2026M(1)20,000 (13)02/14/2028Common Stock20,000$18.41141,552D
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 December 3, 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 2028.
2. Represents a weighted average sales price per share. The shares were sold at prices ranging from $98.580 to $99.210. 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 $99.980 to $100.780. 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.
4. Represents a weighted average sales price per share. The shares were sold at prices ranging from $101.140 to $102.120. 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 $102.140 to $103.050. 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.
6. Represents a weighted average sales price per share. The shares were sold at prices ranging from $103.160 to $104.010. 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.
7. Represents a weighted average sales price per share. The shares were sold at prices ranging from $102.550 to $103.540. 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 $103.570 to $104.550. 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 $104.585 to $105.080 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 $105.69 to $106.680 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 $106.69 to $107.680 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 $107.69 to $107.900 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 14, 2018.
Remarks:
/s/ James R. Oehler, Attorney-in-Fact08/19/2026
** 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)