SEC Form 4
FORM 4 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
or Section 30(h) of the Investment Company Act of 1940
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person*
RA CAPITAL MANAGEMENT, LLC

(Last) (First) (Middle)
20 PARK PLAZA, SUITE 1200

(Street)
BOSTON MA 02116

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
Ra Pharmaceuticals, Inc. [ RARX ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
X Director 10% Owner
Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
06/20/2017
4. If Amendment, Date of Original Filed (Month/Day/Year)
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. 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
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 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: 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
Director Options to Purchase Common Stock (right to buy) $22.37 06/20/2017 A 15,000 (1) 06/20/2027 Common Stock 115,000 $0 15,000 I See Footnotes(2)(3)
1. Name and Address of Reporting Person*
RA CAPITAL MANAGEMENT, LLC

(Last) (First) (Middle)
20 PARK PLAZA, SUITE 1200

(Street)
BOSTON MA 02116

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
X Director 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
Kolchinsky Peter

(Last) (First) (Middle)
C/O RA CAPITAL MANAGEMENT, LLC
20 PARK PLAZA, SUITE 1200

(Street)
BOSTON MA 02116

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
X Director 10% Owner
Officer (give title below) Other (specify below)
Explanation of Responses:
1. On June 20, 2017, the Reporting Persons were granted an option to purchase 15,000 shares of Common Stock as explained further in Note (2). The option shall vest and become exercisable in a single annual installment upon the earlier of (i) the one year anniversary of the grant date of June 20, 2017 or (ii) the Issuer's annual general meeting of shareholders in 2018.
2. The reported securities are held directly by Rajeev Shah, an employee of RA Capital Management, LLC (the "Adviser") and he serves as the Adviser's board representative to the Issuer. The reported securities are held for the benefit of RA Capital Healthcare Fund, L.P. (the "Fund") and a separately managed account (the "Account"). The Adviser is the general partner of the Fund and the investment manager of the Account. Peter Kolchinsky is the sole manager of the Adviser. The Adviser and Mr. Kolchinsky may be deemed indirect beneficial owners of the option. The Adviser and Mr. Kolchinsky disclaim beneficial ownership of the reported securities in reliance on Rule 16a-1(a)(1)(v) and (vii) and disclaim any obligation to file reports under Section 16 other than as directors by deputization.
3. The Adviser and Mr. Kolchinsky have no pecuniary interest in the reported securities held in the separately managed account (the "Account") and disclaim: (A) beneficial ownership thereof for purposes of Rule 16a-1(a)(2) and (B) beneficial ownership of securities held by the Fund, for purposes of Rule 16a-1(a)(2), except to the extent of their pecuniary interest therein.
/s/ Peter Kolchinsky, Manager of RA Capital Management, LLC 06/22/2017
/s/ Peter Kolchinsky, individually 06/22/2017
** 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).
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