0001104659-21-128646.txt : 20211021
0001104659-21-128646.hdr.sgml : 20211021
20211021205122
ACCESSION NUMBER: 0001104659-21-128646
CONFORMED SUBMISSION TYPE: 3
PUBLIC DOCUMENT COUNT: 1
CONFORMED PERIOD OF REPORT: 20211021
FILED AS OF DATE: 20211021
DATE AS OF CHANGE: 20211021
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: 001-40925
FILM NUMBER: 211338461
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: 001-40925
FILM NUMBER: 211338459
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: Four Pines Master Fund LP
CENTRAL INDEX KEY: 0001888685
STATE OF INCORPORATION: E9
FISCAL YEAR END: 1231
FILING VALUES:
FORM TYPE: 3
SEC ACT: 1934 Act
SEC FILE NUMBER: 001-40925
FILM NUMBER: 211338458
BUSINESS ADDRESS:
STREET 1: 190 ELGIN AVENUE
CITY: GEORGE TOWN
STATE: E9
ZIP: KY1-9008
BUSINESS PHONE: 410-220-0130
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 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: 001-40925
FILM NUMBER: 211338460
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: Xilio Therapeutics, Inc.
CENTRAL INDEX KEY: 0001840233
STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834]
IRS NUMBER: 851623397
STATE OF INCORPORATION: DE
FISCAL YEAR END: 1231
BUSINESS ADDRESS:
STREET 1: 828 WINTER STREET
CITY: WALTHAM
STATE: MA
ZIP: 02451
BUSINESS PHONE: 617-833-1027
MAIL ADDRESS:
STREET 1: 828 WINTER STREET
CITY: WALTHAM
STATE: MA
ZIP: 02451
3
1
tm2130646-15_3seq1.xml
OWNERSHIP DOCUMENT
X0206
3
2021-10-21
0
0001840233
Xilio Therapeutics, Inc.
XLO
0001595725
Rock Springs Capital Management LP
650 SOUTH EXETER ST., SUITE 1070
BALTIMORE
MD
21202
0
0
1
0
0001735397
Rock Springs Capital LLC
650 SOUTH EXETER ST., SUITE 1070
BALTIMORE
MD
21202
0
0
1
0
0001735393
Rock Springs Capital Master Fund LP
190 ELGIN AVENUE
GEORGE TOWN
E9
KY1 9001
CAYMAN ISLANDS
0
0
1
0
0001888685
Four Pines Master Fund LP
650 SOUTH EXETER ST., SUITE 1070
BALTIMORE
MD
21202
0
0
1
0
Series C Preferred Stock
Common Stock
756472
I
See footnote
Series C Preferred Stock
Common Stock
151294
I
See footnote
The Series C Preferred Stock automatically converts into the number of shares of Common Stock as shown in Column 3 without payment of further consideration at the holder's election or upon closing of the initial public offering of the Issuer's common stock. 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 Series C Preferred Stock 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 Series C Preferred Stock held directly by Four Pines.
By: /s/ Mark Bussard, Authorized Signatory, Rock Springs Capital Management LP
2021-10-21
By: /s/ Mark Bussard, Authorized Signatory, Rock Springs Capital LLC
2021-10-21
By: /s/ Mark Bussard, Authorized Signatory, Rock Springs Capital Master Fund LP
2021-10-21
By: /s/ Mark Bussard, Authorized Signatory, Four Pines Master Fund LP
2021-10-21