Form Type: 4

SEC EDGAR Link
Accession Number:0001144204-15-059087
Date:2015-10-07
Issuer: ACLARIS THERAPEUTICS, INC. (ACRS)
Original Submission Date:

Reporting Person:

RA CAPITAL MANAGEMENT, LLC
20 PARK PLAZA, SUITE 1200
BOSTON, MA 02116

Reporting Person:

KOLCHINSKY PETER
20 PARK PLAZA, SUITE 1200
BOSTON, MA 02116

Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
Title of SecurityTransaction Date2a. Deemed Execution Date Transaction CodeSharesAcquired or DisposedPrice per share 5. Amount of Securities Beneficially Owned Following Reported Transaction 6. Ownership Form Direct or IndirectNature of Indirect Ownership
COMMON STOCK 2015-10-07 P 938,041 a $10.66 938,041 f1 indirect
COMMON STOCK 2015-10-07 P 1,250,000 a $11.00 2,188,041 f1 indirect
COMMON STOCK 2015-10-07 P 27,398 a $11.00 2,215,439 f1 indirect
COMMON STOCK 2015-10-08 P 21,691 a $11.00 2,237,130 f1 indirect
Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, convertible securities
Title of Derivative Security Conversion or Exercise Price of Derivative Security Transaction Date Deemed Execution Date Transaction Code Number of Derivative Securities Acquired (A) or Disposed of (D) Date ExercisableExpiration Date Title and Amount of Securities Underlying Derivative Security Price of Derivative Security Number of derivative Securities Beneficially Owned Following Reported Transaction(s) Ownership Form: Direct (D) or Indirect (I) Nature of Indirect Beneficial Ownership
Footnotes
IDfootnote
f1 the adviser and mr. kolchinsky disclaim beneficial ownership of the reported securities for purposes of rule 16a-1(a)(1) under 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 securities exchange act of 1934, the beneficial owner of any of the securities reported herein.
f2 the reported securities are owned by ra capital healthcare fund, l.p. (the "fund") and an account owned by blackwell partners, llc (the "blackwell account"). following the reported transactions, the fund held 1,871,841 shares and the blackwell account held 365,289 shares. ra capital management, llc (the "adviser") is the general partner of the fund and the investment adviser of the blackwell account. peter 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.
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