0000950170-24-039590.txt : 20240401
0000950170-24-039590.hdr.sgml : 20240401
20240401182123
ACCESSION NUMBER: 0000950170-24-039590
CONFORMED SUBMISSION TYPE: 4
PUBLIC DOCUMENT COUNT: 1
CONFORMED PERIOD OF REPORT: 20240401
FILED AS OF DATE: 20240401
DATE AS OF CHANGE: 20240401
REPORTING-OWNER:
OWNER DATA:
COMPANY CONFORMED NAME: Fairmount Funds Management LLC
CENTRAL INDEX KEY: 0001802528
ORGANIZATION NAME:
STATE OF INCORPORATION: DE
FISCAL YEAR END: 1231
FILING VALUES:
FORM TYPE: 4
SEC ACT: 1934 Act
SEC FILE NUMBER: 001-38541
FILM NUMBER: 24811522
BUSINESS ADDRESS:
STREET 1: 200 BARR HARBOR DRIVE
STREET 2: SUITE 400
CITY: WEST CONSHOHOCKEN
STATE: PA
ZIP: 19428
BUSINESS PHONE: 267-262-5300
MAIL ADDRESS:
STREET 1: 200 BARR HARBOR DRIVE
STREET 2: SUITE 400
CITY: WEST CONSHOHOCKEN
STATE: PA
ZIP: 19428
REPORTING-OWNER:
OWNER DATA:
COMPANY CONFORMED NAME: Kiselak Tomas
CENTRAL INDEX KEY: 0001830177
ORGANIZATION NAME:
FILING VALUES:
FORM TYPE: 4
SEC ACT: 1934 Act
SEC FILE NUMBER: 001-38541
FILM NUMBER: 24811521
MAIL ADDRESS:
STREET 1: 200 BARR HARBOR DRIVE
STREET 2: SUITE 400
CITY: WEST CONSHOHOCKEN
STATE: PA
ZIP: 19428
ISSUER:
COMPANY DATA:
COMPANY CONFORMED NAME: Dianthus Therapeutics, Inc. /DE/
CENTRAL INDEX KEY: 0001690585
STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834]
ORGANIZATION NAME: 03 Life Sciences
IRS NUMBER: 000000000
STATE OF INCORPORATION: DE
FISCAL YEAR END: 1231
BUSINESS ADDRESS:
STREET 1: 300 TECHNOLOGY SQUARE
STREET 2: 8TH FLOOR
CITY: CAMBRIDGE
STATE: MA
ZIP: 02139
BUSINESS PHONE: 857-201-2700
MAIL ADDRESS:
STREET 1: 300 TECHNOLOGY SQUARE
STREET 2: 8TH FLOOR
CITY: CAMBRIDGE
STATE: MA
ZIP: 02139
FORMER COMPANY:
FORMER CONFORMED NAME: Magenta Therapeutics, Inc.
DATE OF NAME CHANGE: 20161121
4
1
ownership.xml
4
X0508
4
2024-04-01
0001690585
Dianthus Therapeutics, Inc. /DE/
DNTH
0001802528
Fairmount Funds Management LLC
200 BARR HARBOR DRIVE, SUITE 400
WEST CONSHOHOCKEN
PA
19428
true
false
false
false
0001830177
Kiselak Tomas
200 BARR HARBOR DRIVE, SUITE 400
WEST CONSHOHOCKEN
PA
19428
true
false
true
false
false
Common Stock
2024-04-01
4
J
false
58857
D
0
I
By Fairmount Healthcare Fund LP
Common Stock
2024-04-01
4
J
false
58857
A
2700691
I
By Fairmount Healthcare Fund II LP
Common Stock
62146
I
By Fairmount SPV III, LLC
On April 1, 2024, in connection with the wind down of Fairmount Healthcare Fund LP ("Fund I"), all shares of common stock held by Fund I were transferred to Fairmount Healthcare Fund II LP ("Fund II").
Fairmount Funds Management LLC ("Fairmount") is the investment manager for Fund I. The general partner of Fairmount is Fairmount Funds Management GP LLC ("Fairmount GP"), of which Peter Harwin and Tomas Kiselak are the managing members. Fairmount, Fairmount GP, Mr. Harwin, and Mr. Kiselak disclaim beneficial ownership of any of the securities held by Fund I for purposes of Rule 16a-1(a)(2), except to the extent of their pecuniary interest therein.
Fairmount is the investment manager for Fund II. Fairmount, Fairmount GP, Mr. Harwin, and Mr. Kiselak disclaim beneficial ownership of any of the securities held by Fund II for purposes of Rule 16a-1(a)(2), except to the extent of their pecuniary interest therein.
Fairmount is the Class A Member for Fairmount SPV III, LLC. Fairmount, Fairmount GP, Mr. Harwin, and Mr. Kiselak disclaim beneficial ownership of any of the securities held by Fairmount SPV III, LLC for purposes of Rule 16a-1(a)(2), except to the extent of their pecuniary interest therein.
Fairmount, Fund I, Fund II and Fairmount SPV III, LLC may each be deemed a director by deputization of the Issuer by virtue of the fact that Tomas Kiselak serves on the board of directors of the Issuer and is a Managing Member of Fairmount.
/s/ Tomas Kiselak, Managing Member of Fairmount Funds Management LLC
2024-04-01
/s/ Tomas Kiselak
2024-04-01