Sec Form 4 Filing - BRISTOW MICHAEL R @ ARCA biopharma, Inc. - 2014-09-18

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
BRISTOW MICHAEL R
2. Issuer Name and Ticker or Trading Symbol
ARCA biopharma, Inc. [ ABIO]
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)
ARCA BIOPHARMA, INC., 11080 CIRCLEPOINT ROAD, SUITE 140
3. Date of Earliest Transaction (MM/DD/YY)
09/18/2014
(Street)
WESTMINSTER, CO80020
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 09/18/2014 S 13,853 ( 1 ) D $ 1.3 292,625 ( 2 ) D
Common Stock 139,082 I By Investocor Trust as sole Trustee
Common Stock 178,215 I By NFS Custodian for Michael Bristow's IRA
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
Reporting Owners
Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
BRISTOW MICHAEL R
ARCA BIOPHARMA, INC.
11080 CIRCLEPOINT ROAD, SUITE 140
WESTMINSTER, CO80020
X President and CEO
Signatures
/s/ Patrick M. Wheeler, Attorney-in-Fact 09/19/2014
Signature of Reporting Person Date
Explanation of Responses:
( 1 )Represents shares of common stock sold pursuant to a Rule 10b5-1 Plan adopted by the Reporting Person for satisfaction of their tax withholding obligation with respect to the vesting of previously reported Restricted Stock Units ("RSUs") granted to the Reporting Person under the Issuer's 2013 Equity Incentive Plan (the "Plan").
( 2 )Includes (i) remaining 83,334 previously reported shares issued as RSUs under the Plan that vest in two equal annual installments on 9/17/15 and 9/17/16, and (ii) 56,700 previously reported shares issued as RSUs under the Plan that vest in four equal annual installments beginning on 2/27/15, provided that the Reporting Person's continuous service to the Issuer has not been terminated as defined under the Plan.

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).

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