CUSIP No. 157085101	

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

 
SCHEDULE 13G
 
Under the Securities Exchange Act of 1934
(Amendment No. 1)
 
Cerus Corporation
(Name of Issuer)
Common Stock, $0.001 par value per share
(Title of Class of Securities)
157085101
(CUSIP Number)
December 31, 2009
(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

o	Rule 13d-1(b)	
x	Rule 13d-1(c)	
o	Rule 13d-1(d)	

*The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.
 
The information required in the remainder of this cover page shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

 

CUSIP No. 157085101	
 	
 	(1)	Names of Reporting Persons 
Capital Ventures International	
 	
 	(2)	Check the Appropriate Box if a Member of a Group (See Instructions)	
 	 	(a)	o	
 	 	(b)	o	
 	
 	(3)	SEC Use Only	
 	
 	(4)	Citizenship or Place of Organization 
Cayman Islands	
 	 	 	
Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With:	(5)	Sole Voting Power 
0	
	 	
	(6)	Shared Voting Power **
800,000 Shares of Common Stock	
	 	
	(7)	Sole Dispositive Power 
0	
	 	
	(8)	Shared Dispositive Power **
800,000 Shares of Common Stock	
 	
 	(9)	Aggregate Amount Beneficially Owned by Each Reporting Person 
800,000 Shares of Common Stock	
 	
 	(10)	Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o	
 	
 	(11)	Percent of Class Represented by Amount in Row (9) 
2.0%	
 	
 	(12)	Type of Reporting Person (See Instructions) 
CO	

** Heights Capital Management, Inc. is the investment manager to Capital Ventures International and as such may exercise voting and dispositive power over these shares.
 
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CUSIP No. 157085101	
 	
 	(1)	Names of Reporting Persons 
Heights Capital Management, Inc.	
 	
 	(2)	Check the Appropriate Box if a Member of a Group (See Instructions)	
 	 	(a)	o	
 	 	(b)	o	
 	
 	(3)	SEC Use Only	
 	
 	(4)	Citizenship or Place of Organization 
Delaware	
 	 	 	
Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With:	(5)	Sole Voting Power 
0	
	 	
	(6)	Shared Voting Power **
800,000 Shares of Common Stock	
	 	
	(7)	Sole Dispositive Power 
0	
	 	
	(8)	Shared Dispositive Power **
800,000 Shares of Common Stock	
 	
 	(9)	Aggregate Amount Beneficially Owned by Each Reporting Person 
800,000 Shares of Common Stock	
 	
 	(10)	Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o	
 	
 	(11)	Percent of Class Represented by Amount in Row (9) 
2.0%	
 	
 	(12)	Type of Reporting Person (See Instructions) 
CO	

** Heights Capital Management, Inc. is the investment manager to Capital Ventures International and as such may exercise voting and dispositive power over these shares.
 
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CUSIP No. 157085101	

Item 1.	
 	(a)	Name of Issuer
Cerus Corporation, a Delaware corporation (the “Company”).	
 	(b)	Address of Issuer’s Principal Executive Offices
2411 Stanwell Drive
Concord, CA  94520	
 	
Item 2	(a).	Name of Person Filing
This statement is filed by the entities listed below, who are collectively referred to herein as “Reporting Persons,” with respect to the shares of Common Stock of the Company, $0.001 par value per share (the “Shares”).
 
(i)            Capital Ventures International
 
(ii)           Heights Capital Management, Inc.	
Item 2	(b).	Address of Principal Business Office or, if none, Residence
The address of the principal business office of Capital Ventures International is:
 
One Capitol Place
P.O Box 1787 GT
Grand Cayman, Cayman Islands
British West Indies
 
The address of the principal business office of Heights Capital Management, Inc. is:
 
101 California Street, Suite 3250
San Francisco, California 94111	
Item 2	(c).	Citizenship
Citizenship is set forth in Row 4 of the cover page for each Reporting Person hereto and is incorporated herein by reference for each such Reporting Person.	
Item 2	(d)	Title of Class of Securities
Common Stock, $0.001 par value per share	
Item 2	(e)	CUSIP Number
157085101	
 	
Item 3.	If this statement is filed pursuant to §§240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:	
 	(a)	o	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);	
 	(b)	o	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).	
 	(c)	o	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).	
 	(d)	o	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8).	
 	(e)	o	An investment adviser in accordance with §240.13d-1(b)(1)(ii)(E);	
 	(f)	o	An employee benefit plan or endowment fund in accordance with §240.13d-1(b)(1)(ii)(F);	
 	(g)	o	A parent holding company or control person in accordance with §240.13d-1(b)(1)(ii)(G);	
 	(h)	o	A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);	
 	(i)	o	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);	
 	(j)	o	Group, in accordance with Rule 13d-1(b)(1)(ii)(J).	
 
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CUSIP No. 157085101	

Item 4.	Ownership	
Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1.	
The information required by Items 4(a) — (c) is set forth in Rows 5 — 11 of the cover page for each Reporting Person hereto and is incorporated herein by reference for each such Reporting Person. The Company’s Quarterly Report on Form 10-Q for the Quarterly Period ended September 30, 2009 indicates there are 38,700,000 Shares outstanding as of October 21, 2009.  The number and percentage of Shares held by the Reporting Persons is comprised of warrants to purchase 800,000 Shares, which are not exercisable to the extent that the total number of Shares then beneficially owned by the Reporting Person and its Affiliates and any other Persons whose beneficial ownership of Shares would be aggregated with the Reporting Person for purposes of Section 13(d) of the Exchange Act, exceeds 4.99%.
 
Heights Capital Management, Inc., which serves as the investment manager to Capital Ventures International, may be deemed to be the beneficial owner of all Shares owned by Capital Ventures International. Each of the Reporting Persons hereby disclaims any beneficial ownership of any such Shares, except for their pecuniary interest therein.	
 	
Item 5.	Ownership of Five Percent or Less of a Class	
If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following:   x	
 	
Item 6.	Ownership of More than Five Percent on Behalf of Another Person	
Not applicable.	
 	
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company	
Not applicable.	
 	
Item 8.	Identification and Classification of Members of the Group	
Not applicable	
 	
Item 9.	Notice of Dissolution of Group	
Not applicable.	
 
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CUSIP No. 157085101	

Item 10.	Certification	
By signing below each of the undersigned certifies that, to the best of its knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.
 
Exhibits:
 
Exhibit I: Joint Filing Agreement, dated as of August 28, 2009, by and among Capital Ventures International and Heights Capital Management, Inc.	
 
SIGNATURES
 
After reasonable inquiry and to the best of its knowledge and belief, each of the undersigned certifies that the information with respect to it set forth in this statement is true, complete, and correct.
 
Dated: February 12, 2010

CAPITAL VENTURES INTERNATIONAL	 	HEIGHTS CAPITAL MANAGEMENT, INC.	
 	 	 	
By: Heights Capital Management, Inc.	 	By:	/s/ Brian Sopinsky	
pursuant to a Limited Power of Attorney	 	Name:	Brian Sopinsky	
 	 	Title	Secretary	
By:	/s/ Brian Sopinsky	 	 	
Name:	Brian Sopinsky	 	 	
Title	Secretary	 	 	
 
The Limited Power of Attorney executed by Capital Ventures International, authorizing Heights Capital Management, Inc. to sign and file this Schedule 13G on its behalf, which was filed with the Schedule 13G filed with the Securities and Exchange Commission on December 1, 2006 by Capital Ventures International and Heights Capital Management, Inc. with respect to the common stock of Discovery Laboratories, Inc., is hereby incorporated by reference.
 
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CUSIP No. 157085101	
 
EXHIBIT I
 
JOINT FILING AGREEMENT
 
This will confirm the agreement by and among the undersigned that the Schedule 13G filed with the Securities and Exchange Commission on or about the date hereof with respect to the beneficial ownership by the undersigned of the Shares is being filed, and all amendments thereto will be filed, on behalf of each of the persons and entities named below in accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended. This Agreement may be executed in two or more counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument.
 
Dated as of August 28, 2009

CAPITAL VENTURES INTERNATIONAL	 	HEIGHTS CAPITAL MANAGEMENT, INC.	
 	 	 	
By: Heights Capital Management, Inc.	 	By:	/s/ Todd Silverberg	
pursuant to a Limited Power of Attorney	 	Name:	Todd Silverberg	
 	 	Title	Secretary	
By:	/s/ Todd Silverberg	 	 	
Name:	Todd Silverberg	 	 	
Title	Secretary	 	 	
 
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