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):  January 9, 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 and Regulation FD Disclosure.

 

Chiron Corporation announced on January 9, 2004 that the Securities and Exchange Commission has declared effective its registration statement on Form S-3 relating to the resale of $500 million principal amount of its 1-5/8% Convertible Debentures due 2033 and the shares of its common stock issuable upon conversion of the debentures.

 

 

Item 7.  Financial Statements and Exhibits.

 

(c) Exhibits.

 

EXHIBIT NUMBER

 

99.1

 

Press release by Chiron Corporation dated January 9, 2004, relating to the Company’s announcement of the effectiveness of its registration statement  for resale of 1-5/8% convertible debentures due 2033, referred to in Item 5 above.

 

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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:       January 9, 2004

By:

/s/ William G. Green

 

 

 

 

William G. Green

 

 

 

 

Senior Vice President,
General Counsel and
Secretary

 

 

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