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):  June 14, 2004

 

Chiron Corporation

(Exact name of registrant as specified in its charter)

 

Delaware

 

0-12798

 

94-2754624

(State or other
jurisdiction of
incorporation)

 

(Commission
File Number)

 

(IRS Employer
Identification No.)

 

 

 

 

 

4560 Horton Street, Emeryville, CA

 

94608

(Address of principal executive offices)

 

(Zip Code)

 

 

 

 

 

Registrant’s telephone number, including area code:  (510) 655-8730

 

 

 

 

 

N/A

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

 

 



 

Item 5.            Other Events.

 

Chiron Corporation (“Chiron” or the “Company”) announced on June 15, 2004 that it has filed an amendment to its Tender Offer Statement on Schedule TO/A with the Securities and Exchange Commission to report the results of its offer to purchase the Liquid Yield OptionÔ Notes (Zero Coupon-Senior) due 2031 (the “LYONs”).  The repurchase offer expired at 5:00 p.m. New York City Time, on June 14, 2004, as more fully described in the Company’s Schedule TO/A.

 

Item 7.            Financial Statements and Exhibits.

 

(c)          Exhibits.

 

EXHIBIT NUMBER

 

99.1

Press release by Chiron Corporation dated June 15, 2004, relating to the announcement of the results of the Company’s repurchase offer of its Liquid Yield Option™ Notes (Zero Coupon-Senior) due 2031, referred to in Item 5 above, and incorporated by reference to Exhibit (a)(5)(B) of the Schedule TO/A filed with the Securities and Exchange Commission on June 15, 2004.

 

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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.

 

 

 

CHIRON CORPORATION

 

 

 

 

Date:     June 15, 2004

By:

/s/ William G. Green

 

 

 

William G. Green

 

 

Senior Vice President,

 

 

General Counsel and

 

 

Secretary

 

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