Form 8-K HALOZYME THERAPEUTICS, For: Sep 16

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September 16, 2026 4:32 PM EDT

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

____________________________________________

FORM 8-K

_____________________________________________

CURRENT REPORT

Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934


Date of Report (Date of Earliest Event Reported):						September 16, 2026

HALOZYME THERAPEUTICS, INC.

(Exact name of registrant as specified in its charter)

________________________

Commission File Number 001-32335


Delaware						88-0488686
(State or other jurisdiction of incorporation)						(I.R.S. Employer Identification No.)

12390 El Camino Real						92130
San Diego						(Zip Code)
California
(Address of principal executive offices)

(858) 794-8889

(Registrant’s telephone number, including area code)

Not Applicable

(Former name or former address, if changed since last report)

________________________

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Trading Symbol(s)

Name of each exchange on which registered

Common Stock, $0.001 par value

HALO

The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 8.01 Other Events

On September 16, 2026, Halozyme Therapeutics, Inc. (the “Company”) issued a press release announcing that it proposes to offer, subject to market conditions and other factors, $1.05 billion aggregate principal amount of convertible senior notes due 2033 (the “Convertible Notes”). The Company also expects to grant a 13-day option to the initial purchasers to purchase up to an additional $150 million aggregate principal amount of the Convertible Notes.

A copy of the press release is attached hereto as Exhibit 99.1 and is incorporated into this Item 8.01 by reference.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits


Exhibit No.			Description

99.1			Press release dated September 16, 2026
104			Cover Page Interactive Data File (formatted as inline XBRL and contained in Exhibit 101)

*Certain schedules omitted pursuant to Item 601(a)(5) of Regulation S-K. Halozyme agrees to furnish supplementally a copy of any omitted schedule to the SEC upon request.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.