Edgar Filing: CHIRON CORP

Ownership Submission

FORM 4

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:

3235-0287

Expires:

January 31, 2005

Estimated average burden hours per response...

0.5

(Print or Type Responses)

1. Name and Address of Reporting Person ^*

White David

2. Issuer Name and Ticker or Trading Symbol
CHIRON CORP [CHIR]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

_____ Director	_____ 10% Owner
__X__ Officer (give title below)	_____ Other (specify below)
VP, Controller

(Last)

(First)

(Middle)

4560 HORTON STREET

3. Date of Earliest Transaction (Month/Day/Year)
01/31/2006

(Street)

EMERYVILLE, CA 94608

4. If Amendment, Date Original Filed(Month/Day/Year)

6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

(City)

(State)

(Zip)

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)
			Code	V	Amount	(A) or (D)	Price

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
	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 control number.		SEC 1474 (9-02)

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 Underlying Securities
(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 of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)

11. Nature of Indirect Beneficial Ownership
(Instr. 4)

Code

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Restricted Stock Units ⁽¹⁾

⁽²⁾

01/31/2006

A⁽³⁾

5,000

01/31/2007⁽⁴⁾

01/30/2008

Common Stock

5,000

$ 0

5,000

Reporting Owners

Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
White David 4560 HORTON STREET EMERYVILLE, CA 94608			VP, Controller

Signatures

David A. White by Naima Robinson as Atty-in-Fact		02/02/2006
^**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	Each unit pertains to one share of the Issuer's common stock and may be settled either in cash or in stock based on date on which settlement occurs. Settlement will occur as the units vest, and to the extent such settlement occurs prior to the closing of the acquisition of the Issuer by Novartis AG, the payment will be made in shares of the Issuer's common stock; otherwise, the units will be assumed by Novartis and payment will be made in cash based on the consideration paid per share of the Issuer's common stock in the Novartis acquisition.
(2)	One-for-One
(3)	Shares of the Issuer's common stock which become issuable upon the vesting of the units may, at the Reporting Person's election, be withheld by the Issuer in satisfaction of the applicable withholding taxes.
(4)	40% of the units will vest upon the Reporting Person's completion of one year of employment with the Issuer measured from the award date, and the remaining 60% will vest upon his completion of two years of such employment. However, the units will vest in full on an accelerated basis upon an acquisition of the Issuer by a merger or asset sale in which the units are not assumed or upon the termination of the Reporting Person's employment with the Issuer under certain prescribed circumstances following certain changes in control or ownership of the Issuer (including the Novartis acquisition) in which the units are assumed.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.