0000899243-21-039500.txt : 20211006
0000899243-21-039500.hdr.sgml : 20211006
20211006190112
ACCESSION NUMBER: 0000899243-21-039500
CONFORMED SUBMISSION TYPE: 3
PUBLIC DOCUMENT COUNT: 1
CONFORMED PERIOD OF REPORT: 20211006
FILED AS OF DATE: 20211006
DATE AS OF CHANGE: 20211006
REPORTING-OWNER:
OWNER DATA:
COMPANY CONFORMED NAME: Rock Springs Capital Management LP
CENTRAL INDEX KEY: 0001595725
STATE OF INCORPORATION: DE
FISCAL YEAR END: 1231
FILING VALUES:
FORM TYPE: 3
SEC ACT: 1934 Act
SEC FILE NUMBER: 001-40869
FILM NUMBER: 211310700
BUSINESS ADDRESS:
STREET 1: 650 SOUTH EXETER STREET
STREET 2: SUITE 1070
CITY: BALTIMORE
STATE: MD
ZIP: 21202
BUSINESS PHONE: 4102200129
MAIL ADDRESS:
STREET 1: 650 SOUTH EXETER STREET
STREET 2: SUITE 1070
CITY: BALTIMORE
STATE: MD
ZIP: 21202
REPORTING-OWNER:
OWNER DATA:
COMPANY CONFORMED NAME: Rock Springs Capital Master Fund LP
CENTRAL INDEX KEY: 0001735393
STATE OF INCORPORATION: DE
FISCAL YEAR END: 1231
FILING VALUES:
FORM TYPE: 3
SEC ACT: 1934 Act
SEC FILE NUMBER: 001-40869
FILM NUMBER: 211310699
BUSINESS ADDRESS:
STREET 1: 650 SOUTH EXETER STREET
STREET 2: SUITE 1070
CITY: BALTIMORE
STATE: MD
ZIP: 21202
BUSINESS PHONE: 410-220-0142
MAIL ADDRESS:
STREET 1: 190 ELGIN AVENUE
CITY: GEORGE TOWN
STATE: E9
ZIP: KY1 9001
REPORTING-OWNER:
OWNER DATA:
COMPANY CONFORMED NAME: Rock Springs Capital LLC
CENTRAL INDEX KEY: 0001735397
STATE OF INCORPORATION: DE
FISCAL YEAR END: 1231
FILING VALUES:
FORM TYPE: 3
SEC ACT: 1934 Act
SEC FILE NUMBER: 001-40869
FILM NUMBER: 211310698
BUSINESS ADDRESS:
STREET 1: 650 SOUTH EXETER STREET
STREET 2: SUITE 1070
CITY: BALTIMORE
STATE: MD
ZIP: 21202
BUSINESS PHONE: 410-220-0142
MAIL ADDRESS:
STREET 1: 650 SOUTH EXETER STREET
STREET 2: SUITE 1070
CITY: BALTIMORE
STATE: MD
ZIP: 21202
ISSUER:
COMPANY DATA:
COMPANY CONFORMED NAME: Theseus Pharmaceuticals, Inc.
CENTRAL INDEX KEY: 0001745020
STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834]
IRS NUMBER: 830712806
STATE OF INCORPORATION: DE
FISCAL YEAR END: 1231
BUSINESS ADDRESS:
STREET 1: 245 MAIN STREET
CITY: CAMBRIDGE
STATE: MA
ZIP: 02142
BUSINESS PHONE: (857) 400-9491
MAIL ADDRESS:
STREET 1: 245 MAIN STREET
CITY: CAMBRIDGE
STATE: MA
ZIP: 02142
3
1
doc3.xml
FORM 3 SUBMISSION
X0206
3
2021-10-06
0
0001745020
Theseus Pharmaceuticals, Inc.
THRX
0001595725
Rock Springs Capital Management LP
650 SOUTH EXETER ST., SUITE 1070
BALTIMORE
MD
21202
0
0
1
0
0001735393
Rock Springs Capital Master Fund LP
C/O WALKERS CORPORATE LIMITED,
AYMAN CO CENTER 27 HOSPITAL ROAD
GEORAGE TOWN
E9
KY-1-9008
CAYMAN ISLANDS
0
0
1
0
0001735397
Rock Springs Capital LLC
650 SOUTH EXETER ST., SUITE 1070
BALTIMORE
MD
2102
0
0
1
0
Series B Convertible Preferred Stock
Common Stock
349320
I
See Footnote
Series B Convertible Preferred Stock
Common Stock
87329
I
See Footnote
The reported security is convertible into the issuer's Common Stock on a one-for-one basis at any time at the holder's election and shall automatically convert into Common Stock immediately prior to the closing of the issuer's initial public offering without payment of further consideration. The shares have no expiration date.
The securities reported herein are held of record by Rock Springs Capital Master Fund LP ("Master Fund"). Rock Springs Capital LLC ("RSC") is the general partner of Rock Springs Capital Management LP ("RSCM") which is the investment manager to Master Fund. RSC and RSCM may therefore be deemed to have or share beneficial ownership of the shares held directly by Master Fund.
The securities reported herein are held of record by Four Pines Master Fund LP ("Four Pines"). RSC is the general partner of RSCM which is the investment manager to Four Pines. RSC and RSCM may therefore be deemed to have or share beneficial ownership of the shares held directly by Four Pines.
By: /s/ Mark Bussard, Authorized Signatory, Rock Springs Capital Management LP
2021-10-06
By: /s/ Mark Bussard, Authorized Signatory, Rock Springs Capital Master Fund LP
2021-10-06
By: /s/ Mark Bussard, Authorized Signatory, Rock Springs Capital LLC
2021-10-06