Form 3 - Initial statement of beneficial ownership of securities:
SEC Accession No. 0001193805-17-003233
Filing Date
2017-10-04
Accepted
2017-10-04 17:46:36
Documents
2
Period of Report
2017-10-04

Document Format Files

Seq Description Document Type Size
1 OWNERSHIP DOCUMENT e617358_3-rhythm.html 3  
1 OWNERSHIP DOCUMENT e617358_3-rhythm.xml 3 11462
2 e617358_ex99.htm EX-99 7950
  Complete submission text file 0001193805-17-003233.txt   23840
Mailing Address 780 THIRD AVENUE, 37TH FLOOR NEW YORK NY 10017
Business Address 780 THIRD AVENUE 37TH FLOOR NEW YORK NY 10017 2125511600
DEERFIELD MANAGEMENT CO (Reporting) CIK: 0001009258 (see all company filings)

State of Incorp.: DE
Type: 3 | Act: 34 | File No.: 001-38223 | Film No.: 171122740

Mailing Address 780 THIRD AVENUE 37TH FLOOR NEW YORK NY 10017
Business Address 780 THIRD AVENUE 37TH FLOOR NEW YORK NY 10017 2125511600
Deerfield Mgmt L.P. (Reporting) CIK: 0001010823 (see all company filings)

Type: 3 | Act: 34 | File No.: 001-38223 | Film No.: 171122741

Mailing Address 780 THIRD AVENUE 37TH FLOOR NEW YORK NY 10017
Business Address
Flynn James E (Reporting) CIK: 0001352546 (see all company filings)

Type: 3 | Act: 34 | File No.: 001-38223 | Film No.: 171122742

Mailing Address 780 3RD AVENUE 37TH FLOOR NEW YORK NY 10017
Business Address 780 3RD AVENUE 37TH FLOOR NEW YORK NY 10017 212-551-1600
Deerfield Special Situations Fund, L.P. (Reporting) CIK: 0001354395 (see all company filings)

State of Incorp.: DE
Type: 3 | Act: 34 | File No.: 001-38223 | Film No.: 171122739

Mailing Address 780 THIRD AVENUE, 37TH FLOOR NEW YORK NY 10017
Business Address 780 THIRD AVENUE, 37TH FLOOR NEW YORK NY 10017 212-551-1600
Deerfield Private Design Fund III, L.P. (Reporting) CIK: 0001603333 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-38223 | Film No.: 171122737

Mailing Address 780 THIRD AVENUE, 37TH FLOOR NEW YORK NY 10017
Business Address 780 THIRD AVENUE, 37TH FLOOR NEW YORK NY 10017 212-551-1600
Deerfield Mgmt III, L.P. (Reporting) CIK: 0001610540 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1214
Type: 3 | Act: 34 | File No.: 001-38223 | Film No.: 171122738

Mailing Address 500 BOYLSTON STREET 11TH FLOOR BOSTON MA 02116
Business Address 500 BOYLSTON STREET 11TH FLOOR BOSTON MA 02116 857-264-4280
RHYTHM PHARMACEUTICALS, INC. (Issuer) CIK: 0001649904 (see all company filings)

EIN.: 462159271 | State of Incorp.: DE | Fiscal Year End: 1231
SIC: 2834 Pharmaceutical Preparations