Sec Form 4 Filing - Greenman William Mariner @ CERUS CORP - 2019-03-10

Insider filing report for Changes in Beneficial Ownership
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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
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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1. Name and Address of Reporting Person
Greenman William Mariner
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)
President and CEO
(Last) (First) (Middle)
C/O CERUS CORPORATION, 2550 STANWELL DRIVE
3. Date of Earliest Transaction (MM/DD/YY)
03/10/2019
(Street)
CONCORD, CA94520
4. If Amendment, Date Original Filed (MM/DD/YY)
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 (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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 03/10/2019 M 22,500 A 551,552 ( 2 ) D
Common Stock 03/12/2019 S 7,781 ( 3 ) D $ 6.48 543,771 D
Common Stock 03/12/2019 M 28,125 A 571,896 D
Common Stock 03/13/2019 S 10,619 ( 3 ) D $ 5.8995 561,277 D
Common Stock 03/12/2019 M 71,667 A 632,944 D
Common Stock 03/13/2019 S 27,059 ( 3 ) D $ 5.8997 605,885 D
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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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
(MM/DD/YY)
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
Restricted Stock Unit ( 1 ) 03/10/2019 M 22,500 ( 4 ) ( 4 ) Common Stock 22,500 ( 5 ) 0 D
Restricted Stock Unit ( 1 ) 03/12/2019 M 28,125 ( 6 ) ( 6 ) Common Stock 28,125 ( 5 ) 28,125 D
Restricted Stock Unit ( 1 ) 03/12/2019 M 71,667 ( 7 ) ( 7 ) Common Stock 71,667 ( 5 ) 143,333 D
Reporting Owners
Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Greenman William Mariner
C/O CERUS CORPORATION
2550 STANWELL DRIVE
CONCORD, CA94520
X President and CEO
Signatures
William M. Greenman, by Chrystal Menard, attorney-in-fact 03/13/2019
Signature of Reporting Person Date
Explanation of Responses:
( 1 )Each restricted stock unit represents a contingent right to receive one (1) share of Cerus Common Stock.
( 2 )Includes 1,951 shares purchased under Issuer's Employee Stock Purchase Plan on 02/28/19.
( 3 )Represents the number of shares required to be sold to cover the statutory tax withholding obligations and corresponding brokerage fee in connection with the vesting of the restricted stock units listed in Table II. This sale is mandated by the election to satisfy the minimum statutory tax withholding obligations through a "sell to cover" transaction and does not represent a discretionary sale by the reporting person.
( 4 )The restricted stock unit vests in three equal annual installments beginning on March 10, 2017.
( 5 )Not applicable.
( 6 )The restricted stock unit vests in three equal annual installments beginning on March 12, 2018.
( 7 )The restricted stock unit vests in three equal annual installments beginning on March 12, 2019.

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).
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