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

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(Print or Type Responses)

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 (Month/Day/Year) 10/03/2014 (Street) CONCORD, CA 94520 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 Common Stock 10/03/2014   M   100 A $ 2.51 780,856 D   Common Stock 10/03/2014   M   150 A $ 2.98 781,006 D   Common Stock 10/03/2014   M   9,940 A $ 2.15 790,946 D   Common Stock 10/03/2014   M   20,060 A $ 2.15 811,006 D   Common Stock 10/03/2014   M   35,000 A $ 0.79 846,006 D   Common Stock 10/03/2014   M   97,500 A $ 2.08 943,506 D

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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

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Option (Right to Buy)

$ 2.51

10/03/2014

M

100

(1)

11/15/2014

Common Stock

100

(2)

0

D

Option (Right to Buy)

$ 2.98

10/03/2014

M

150

(3)

07/26/2019

Common Stock

150

(2)

0

D

Option (Right to Buy)

$ 2.15

10/03/2014

M

9,940

(4)

09/30/2019

Common Stock

9,940

(2)

20,060

D

Option (Right to Buy)

$ 2.15

10/03/2014

M

20,060

(4)

09/30/2019

Common Stock

20,060

(2)

0

D

Option (Right to Buy)

$ 0.79

10/03/2014

M

35,000

(5)

01/11/2019

Common Stock

35,000

(2)

0

D

Option (Right to Buy)

$ 2.08

10/03/2014

M

97,500

(6)

08/31/2021

Common Stock

97,500

(2)

32,500

D

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		10/06/2014
**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)	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.

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