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  4. [Form 4] HALOZYME THERAPEUTICS, INC. Insider Trading Activity

Halozyme (HALO) CLO reports RSU vesting and share withholding for taxes

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

Rhea-AI Filing Summary

HALOZYME THERAPEUTICS, INC. executive Mark Howard Snyder reported routine equity compensation activity involving restricted stock units. On June 12, 5,034 restricted stock units converted into the same number of common shares. The company withheld 2,715 shares at a market price of $69.50 per share to cover tax obligations, which was recorded as a disposition but not an open‑market sale. Following these transactions, Snyder directly owned 49,929 shares of common stock. The filing shows no open‑market buying or selling, only vesting, conversion, and tax withholding mechanics typical of executive compensation.

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Negative

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Insights

Routine RSU vesting with tax withholding, no open‑market trades.

The filing shows restricted stock units vesting into 5,034 common shares and 2,715 shares withheld for tax obligations at $69.50 per share. This is a standard equity compensation event for an executive officer.

The disposition is coded as an F transaction, meaning shares were delivered to the issuer for taxes rather than sold in the market. After these steps, Mark Howard Snyder holds 49,929 common shares directly, with no remaining derivative positions disclosed here.

Because there are no open‑market purchases or sales, the informational value for investors is limited. The activity mainly updates Snyder’s ownership and reflects ongoing compensation vesting rather than a change in his discretionary exposure to HALOZYME THERAPEUTICS, INC. stock.

Insider Snyder Mark Howard
Role SVP, CHIEF LEGAL OFFICER
Type Security Shares Price Value
Exercise Restricted Stock Units 5,034 $0.00 $0.00
Exercise Common Stock 5,034 $0.00 $0.00
Exercise Price or Tax Liability Common Stock 2,715 $69.50 $189K
Holdings After Transaction: Restricted Stock Units — 10,068 shares (Direct); Common Stock — 49,929 shares (Direct)
Footnotes (2)
  1. F1. The reported disposition of 2,715 shares represents the shares that were withheld by the issuer as payment for tax withholding obligations.
  2. F2. This transaction represents the vesting and settlement of restricted stock units in shares of common stock of the issuer.
Shares withheld for taxes 2,715 shares at $69.50 Withheld to cover tax obligations on June 12
RSUs converted to common stock 5,034 shares Restricted Stock Units vesting and settlement on June 12
Post-transaction common shares 49,929 shares Direct common stock ownership after transactions
Post-transaction RSU balance 10,068 units Restricted Stock Units remaining after conversion
Restricted Stock Units financial
"This transaction represents the vesting and settlement of restricted stock units in shares of common stock"
Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.
tax withholding obligations financial
"shares that were withheld by the issuer as payment for tax withholding obligations"
derivative security financial
"transaction represents the vesting and settlement of restricted stock units"
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.

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

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Form 4 Insider Transactions: What Each Field Means →

FAQ

What insider transactions did HALO (Halozyme Therapeutics) report for Mark Howard Snyder?
The filing reports RSU vesting and related tax withholding. 5,034 restricted stock units converted into common shares, and 2,715 shares were withheld by the company to cover tax obligations, with no open‑market buying or selling reported.

Did Mark Howard Snyder of HALO sell shares in the open market in this Form 4?
No open‑market sale occurred. The 2,715 shares coded as a disposition were withheld by the issuer to satisfy tax withholding obligations, which reduces reported holdings but does not involve selling shares into the public market.

How many HALO shares does Mark Howard Snyder own after these transactions?
After the reported transactions, Mark Howard Snyder directly owns 49,929 shares of Halozyme Therapeutics common stock. This total reflects the RSU conversion into common shares and the simultaneous share withholding for tax obligations recorded in the Form 4.

What does the RSU conversion mean in Halozyme Therapeutics’ Form 4 filing?
The RSU conversion means 5,034 restricted stock units vested and settled into 5,034 common shares of Halozyme Therapeutics. This is part of equity compensation, increasing common share ownership while remaining subject to tax withholding requirements handled via share disposition to the issuer.

How were tax obligations handled in the HALO Form 4 insider transaction?
Tax obligations were satisfied by withholding 2,715 shares at a market price of $69.50 per share. These shares were delivered back to the issuer rather than sold in the open market, covering the executive’s tax liability from the RSU vesting event.
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).
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*
Snyder Mark Howard
(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)
Director10% Owner
XOfficer (give title below)Other (specify below)
SVP, CHIEF LEGAL OFFICER
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
06/12/2026		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 Stock06/12/2026M5,034A$052,644D
Common Stock06/12/2026F2,715(1)D$69.549,929D
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
Restricted Stock Units$006/12/2026M5,034 (2) (2)Common Stock5,034$010,068D
Explanation of Responses:
1. The reported disposition of 2,715 shares represents the shares that were withheld by the issuer as payment for tax withholding obligations.
2. This transaction represents the vesting and settlement of restricted stock units in shares of common stock of the issuer.
Remarks:
/s/ James R. Oehler, Attorney-in-Fact06/15/2026
** 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)

Source: View Original Filing on SEC EDGAR