RHYTHM PHARMACEUTICALS, INC. — Director's Dealing 2019

Oct 18, 2019

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: RHYTHM PHARMACEUTICALS, INC. (RYTM)
CIK: 0001649904
Period of Report: 2019-10-16

Reporting Person: RA CAPITAL MANAGEMENT, LLC (10% Owner)
Reporting Person: RA Capital Healthcare Fund LP (10% Owner)
Reporting Person: Kolchinsky Peter (10% Owner)

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	5422312	Indirect

Footnotes

F1: These securities include 4,599,403 shares held by RA Capital Healthcare Fund, L.P. (the "Fund") and 822,909 shares held in a separately managed account (the "Account").

F2: RA Capital Management, LLC (the "Adviser") is the general partner of the Fund and the investment adviser for the Account. Peter Kolchinsky is the sole manager of the Adviser. The Adviser and Dr. Kolchinsky may be deemed indirect beneficial owners of the securities for purposes of Section 13(d) of the Securities Exchange Act of 1934 (the "Act"). They disclaim beneficial ownership of any of the reported securities for the purpose of determining whether they are subject to Section 16 of the Act, however, in reliance on Rule 16a-1(a)(1)(v) and (vii). To the extent that they might be deemed subject to Section 16, they disclaim 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, and disclaim any pecuniary interest in securities held in the Account.

F3: The filing of this Form 3 shall not be construed as an admission that either the Adviser or Dr. Kolchinsky is or was for the purposes of Section 16(a), or otherwise, the beneficial owner of any of the securities held in the Account.