FORM 4
[ X ] 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
                                                                                  
OMB APPROVAL
OMB Number: 3235-0287
Estimated average burden
hours per response...
0.5
                      
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 *

RA CAPITAL MANAGEMENT, LLC
2. Issuer Name and Ticker or Trading Symbol

Aclaris Therapeutics, Inc. [ ACRS ]
5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

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

C/O RA CAPITAL MANAGEMENT, LLC, 20 PARK PLAZA, SUITE 1200
3. Date of Earliest Transaction (MM/DD/YYYY)

9/15/2016
(Street)

BOSTON, MA 02116
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

___ Form filed by One Reporting Person
_ X _ 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   9/15/2016     S    20000   D $24.0350   2607719   I   See Footnote   (1)
Common Stock   9/15/2016     S    273000   D $24.0000   2334719   I   See Footnote   (1)
Common Stock   9/15/2016     S    58950   D $24.2000   2275769   I   See Footnote   (1)
Common Stock   9/16/2016     S    150000   D $24.5000   2125769   I   See Footnote   (1)
Common Stock   9/16/2016     S    23600   D $24.5429   2102169   (2) I   See Footnote   (1)

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

Explanation of Responses:
( 1)  RA Capital Management, LLC (the "Adviser") and Peter Kolchinsky disclaim beneficial ownership of the reported securities for purposes of Rule 16a-1(a)(1) under the Securities Exchange Act of 1934 (the "Exchange Act") in reliance on Rule 16a-1(a)(1)(v) and (vii), respectively, and, therefore, disclaim any obligation to report ownership of or transactions in the reported securities under Section 16a of the Exchange Act. The filing of this Form 4 shall not be construed as an admission that either the Adviser or Mr. Kolchinsky is or was, for purposes of Section 16 of the Exchange Act, the beneficial owner of any of the securities reported herein.
( 2)  The reported securities are owned by RA Capital Healthcare Fund, L.P. (the "Fund") and an account owned by Blackwell Partners, LLC - Series A (the "Blackwell Account"). Following the reported transactions, the Fund held 1,770,522 shares and the Blackwell Account held 331,647 shares. The Adviser is the general partner of the Fund and the investment adviser of the Blackwell Account. Mr. Kolchinsky is the sole manager of the Adviser. In their respective capacities, each of Mr. Kolchinsky and the Adviser may be deemed to beneficially own the reported securities for purposes of Section 13(d) of the Exchange Act.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
RA CAPITAL MANAGEMENT, LLC
C/O RA CAPITAL MANAGEMENT, LLC
20 PARK PLAZA, SUITE 1200
BOSTON, MA 02116

X

Kolchinsky Peter
C/O RA CAPITAL MANAGEMENT, LLC
20 PARK PLAZA, SUITE 1200
BOSTON, MA 02116

X

RA Capital Healthcare Fund LP
C/O RA CAPITAL MANAGEMENT, LLC
20 PARK PLAZA, SUITE 1200
BOSTON, MA 02116

X


Signatures
/s/ Peter Kolchinsky Peter Kolchinsky, Manager of RA Capital Management, LLC 9/19/2016
** Signature of Reporting Person Date

/s/ Peter Kolchinsky Peter Kolchinsky, individually 9/19/2016
** Signature of Reporting Person Date

/s/ Peter Kolchinsky Peter Kolchinsky, Manager of RA Capital Management, LLC, the General Partner of RA Capital Healthcare Fund, L.P. 9/19/2016
** 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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.
Aclaris Therapeutics (NASDAQ:ACRS)
Historical Stock Chart
From Feb 2024 to Mar 2024 Click Here for more Aclaris Therapeutics Charts.
Aclaris Therapeutics (NASDAQ:ACRS)
Historical Stock Chart
From Mar 2023 to Mar 2024 Click Here for more Aclaris Therapeutics Charts.