FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES 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 *   Novartis Bioventures Ltd 2. Date of Event Requiring Statement (Month/Day/Year) 10/25/2016 3. Issuer Name and Ticker or Trading Symbol Ra Pharmaceuticals, Inc. [RARX] (Last) (First) (Middle) C/O NOVARTIS INTERNATIONAL AG, WSJ-200.220 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) CH-4002 BASEL, V8 0000000000 6. Individual or Joint/Group Filing(Check Applicable Line) ___ Form filed by One Reporting Person _X_ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Beneficially Owned

1.Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Warrants to Purchase Common Stock	  (2)	04/01/2022	Common Stock	62,575	$ 0.07	D (1)	Â
Series A Preferred Stock	  (3)	  (3)	Common Stock	1,389,797	$ (3)	D (1)	Â
Series B-1 Preferred Stock	  (4)	  (4)	Common Stock	522,561	$ (4)	D (1)	Â
Series B-2 Preferred Stock	  (5)	  (5)	Common Stock	486,104	$ (5)	D (1)	Â

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Novartis Bioventures Ltd C/O NOVARTIS INTERNATIONAL AG WSJ-200.220 CH-4002 BASEL, V8 0000000000	Â	  X	Â	Â
NOVARTIS AG LICHTSTRASSE 35 BASEL, V8 CH 4056	Â	  X	Â	Â

Signatures

/s/ Michael Jones, Authorized Signatory /s/ Laurieann Chaikowsky, Authorized Signatory		10/25/2016
**Signature of Reporting Person		Date
/s/ Michael Jones, Director /s/ Laurieann Chaikowsky, Authorized Signatory		10/25/2016
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 5(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).
(1)	The board of directors of Novartis Bioventures Ltd. has sole voting and investment control and power over such securities. None of the members of its board of directors has individual voting or investment power with respect to such securities and each disclaims beneficial ownership of such securities. Novartis Bioventures Ltd. is an indirectly owned subsidiary of Novartis AG.
(2)	The Warrants to Purchase Common Stock have a $0.07 exercise price and are automatically exercised for shares of Common Stock on a net issuance basis upon consummation of the Issuer's initial public offering of Common Stock.
(3)	Each share of the Series A Preferred Stock is convertible into Common Stock on a 1-for-7 basis automatically upon the closing of the Issuer's initial public offering, and has no expiration date.
(4)	Each share of the Series B-1 Preferred Stock is convertible into Common Stock on a 1-for-7 basis automatically upon the closing of the Issuer's initial public offering, and has no expiration date.
(5)	Each share of the Series B-2 Preferred Stock is convertible into Common Stock on a 1-for-7 basis automatically upon the closing of the Issuer's initial public offering, and has no expiration date.
  Remarks: Exhibit 24.1: Power of Attorney

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