0001950047-23-003696.txt : 20230905 0001950047-23-003696.hdr.sgml : 20230905 20230905161709 ACCESSION NUMBER: 0001950047-23-003696 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20230905 DATE AS OF CHANGE: 20230905 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: RHYTHM PHARMACEUTICALS, INC. CENTRAL INDEX KEY: 0001649904 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] IRS NUMBER: 462159271 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 144 SEC ACT: 1933 Act SEC FILE NUMBER: 001-38223 FILM NUMBER: 231235974 BUSINESS ADDRESS: STREET 1: 222 BERKELEY STREET STREET 2: 12TH FLOOR CITY: BOSTON STATE: MA ZIP: 02116 BUSINESS PHONE: 857-264-4280 MAIL ADDRESS: STREET 1: 222 BERKELEY STREET STREET 2: 12TH FLOOR CITY: BOSTON STATE: MA ZIP: 02116 FORMER COMPANY: FORMER CONFORMED NAME: RHYTHM METABOLIC, INC. DATE OF NAME CHANGE: 20150803 REPORTING-OWNER: COMPANY DATA: COMPANY CONFORMED NAME: Lee Jennifer Kayden CENTRAL INDEX KEY: 0001801372 FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: C/O KRYSTAL BIOTECH, INC. STREET 2: 2100 WHARTON STREET, SUITE 701 CITY: PITTSBURGH STATE: PA ZIP: 15203 FORMER COMPANY: FORMER CONFORMED NAME: Chien Jennifer DATE OF NAME CHANGE: 20200128 144 1 primary_doc.xml 144 0001801372 XXXXXXXX LIVE 0001649904 RHYTHM PHARMACEUTICALS INC 001-38223 222 Berkeley Street BOSTON MA 02116 8572644293 JENNIFER CHIEN Officer Common Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 38th Fl. New York NY 10004

6166 171414.80 56901530 09/05/2023 NASDAQ Common 09/05/2023 Exercise of Stock Options Issuer N 4519 09/05/2023 Cash Common 02/09/2023 Restricted Stock Units Issuer N 1647 02/09/2023 N/A N 10b5-1 Sales for JENNIFER CHIEN

222 Berkeley Street BOSTON MA 02116

Common 08/09/2023 1718 42365.88 10b5-1 Sales for JENNIFER CHIEN

222 Berkeley Street BOSTON MA 02116

Common 08/07/2023 11223 271347.45 The securities to be sold were acquired upon the vesting of restricted stock units during the period of 02/09/2023 through 02/11/2022 09/05/2023 05/08/2023 /s/ Jennifer Chien