SEC FORM 3

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Green Kevin Dennis

(Last)

(First)

(Middle)

C/O CERUS CORPORATION

2411 STANWELL DRIVE

(Street)

CONCORD

94520

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
03/18/2009

3. Issuer Name and Ticker or Trading Symbol
CERUS CORP [ CERS ]

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

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	Chief Accounting Officer

5. If Amendment, Date of 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

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	14,871	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
Option (Right to Buy)	⁽¹⁾	01/02/2016	Common Stock	25,000	$10.15	D
Option (Right to Buy)	⁽²⁾	10/01/2016	Common Stock	6,150	$5.55	D
Optioin (Right to Buy)	⁽³⁾	09/30/2017	Common Stock	7,500	$8.73	D
Option (Right to Buy)	⁽⁴⁾	09/30/2018	Common Stock	11,000	$4.19	D
Option (Right to Buy)	⁽⁵⁾	01/11/2019	Common Stock	23,000	$0.79	D

Explanation of Responses:

1. One eighth (1/8th) of the shares subject to the Option shall vest six (6) months after January 3, 2006, and one forty-eighth (1/48th) of the shares subject to the Option shall vest on the first day of each month thereafter.

2. The shares subject to the Option shall vest in forty-eight (48) equal monthly installments over 4 years after October 2, 2006.

3. One eighth (1/8th) of the shares subject to the Option shall vest six (6) months after October 1, 2007, and one forty-eighth (1/48th) of the shares subject to the Option shall vest on the first day of each month thereafter.

4. One eighth (1/8th) of the shares subject to the Option shall vest six (6) months after October 1, 2008, and one forty-eighth (1/48th) of the shares subject to the Option shall vest on the first day of each month thereafter.

5. One fourth (1/4th) of the shares subject to the Option shall vest annually after January 1, 2009.

	Kevin D. Green by Lori L. Roll, attorney-in-fact	03/26/2009
	** Signature of Reporting Person	Date
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 5 (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.
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