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

1. Name and Address of Reporting Person *

CORASH LAURENCE M	2. Issuer Name and Ticker or Trading Symbol

CERUS CORP [ CERS ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

__ X __ Director                      _____ 10% Owner
__ X __ Officer (give title below)      _____ Other (specify below)
Chief Med & Scientific Officer	
(Last)          (First)          (Middle)

C/O CERUS CORPORATION, 2550 STANWELL DRIVE	3. Date of Earliest Transaction (MM/DD/YYYY)

10/3/2014		
(Street)

CONCORD, CA 94520
(City)        (State)        (Zip)	4. If Amendment, Date Original Filed (MM/DD/YYYY)

 	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 Acquired, Disposed of, or Beneficially Owned	
1.Title of Security
(Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. 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				
Common Stock  	10/3/2014  	 	M	  	100  	A	$2.51  	780856  	D  	 	
Common Stock  	10/3/2014  	 	M	  	150  	A	$2.98  	781006  	D  	 	
Common Stock  	10/3/2014  	 	M	  	9940  	A	$2.15  	790946  	D  	 	
Common Stock  	10/3/2014  	 	M	  	20060  	A	$2.15  	811006  	D  	 	
Common Stock  	10/3/2014  	 	M	  	35000  	A	$.79  	846006  	D  	 	
Common Stock  	10/3/2014  	 	M	  	97500  	A	$2.08  	943506  	D  	 	

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)	
1. Title of Derivate Security
(Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. 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	7. Title and Amount of Securities Underlying Derivative Security
(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	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares					
Option (Right to Buy)  	$2.51  	10/3/2014  	 	M  	  	  	100   	  (1)	11/15/2014  	Common Stock  	100  	  (2)	0  	D  	 	
Option (Right to Buy)  	$2.98  	10/3/2014  	 	M  	  	  	150   	  (3)	7/26/2019  	Common Stock  	150  	  (2)	0  	D  	 	
Option (Right to Buy)  	$2.15  	10/3/2014  	 	M  	  	  	9940   	  (4)	9/30/2019  	Common Stock  	9940  	  (2)	20060  	D  	 	
Option (Right to Buy)  	$2.15  	10/3/2014  	 	M  	  	  	20060   	  (4)	9/30/2019  	Common Stock  	20060  	  (2)	0  	D  	 	
Option (Right to Buy)  	$.79  	10/3/2014  	 	M  	  	  	35000   	  (5)	1/11/2019  	Common Stock  	35000  	  (2)	0  	D  	 	
Option (Right to Buy)  	$2.08  	10/3/2014  	 	M  	  	  	97500   	  (6)	8/31/2021  	Common Stock  	97500  	  (2)	32500  	D  	 	

Explanation of Responses:	
(  1) 	The Options vested immediately on November 16, 2004.	
(  2) 	Not applicable.	
(  3) 	The Options became fully vested on September 30, 2009.	
(  4) 	One eighth (1/8th) of the shares subject to the Option vested six (6) months after October 1, 2009 and one forty-eighth (1/48th) of the shares subject to the Option vested on the first day of each month thereafter.	
(  5) 	One fourth (1/4th) of the shares subject to the Option vested annually on each anniversary of the January 12, 2009 grant date.	
(  6) 	One eighth (1/8th) of the shares subject to the Option vested six (6) months after November 1, 2011 and one forty-eighth (1/48th) of the shares subject to the Option vested on the first day of each month thereafter.	

Reporting Owners	
Reporting Owner Name / Address	Relationships	
	Director	10% Owner	Officer	Other	
CORASH LAURENCE M
C/O CERUS CORPORATION
2550 STANWELL DRIVE
CONCORD, CA 94520	X		Chief Med & Scientific Officer		

Signatures		
Laurence M. Corash by Chrystal Menard, attorney-in-fact		10/6/2014	
** 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 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).	
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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