0000950123-23-010856.txt : 20231114 0000950123-23-010856.hdr.sgml : 20231114 20231114160019 ACCESSION NUMBER: 0000950123-23-010856 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20230930 FILED AS OF DATE: 20231114 DATE AS OF CHANGE: 20231114 EFFECTIVENESS DATE: 20231114 FILER: COMPANY DATA: COMPANY CONFORMED NAME: Bain Capital Life Sciences Investors, LLC CENTRAL INDEX KEY: 0001703031 IRS NUMBER: 813996001 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 13F-HR SEC ACT: 1934 Act SEC FILE NUMBER: 028-18477 FILM NUMBER: 231405510 BUSINESS ADDRESS: STREET 1: 200 CLARENDON STREET CITY: BOSTON STATE: MA ZIP: 02116 BUSINESS PHONE: 6175162878 MAIL ADDRESS: STREET 1: 200 CLARENDON STREET CITY: BOSTON STATE: MA ZIP: 02116 13F-HR 1 primary_doc.xml X0202 13F-HR LIVE 0001703031 XXXXXXXX 09-30-2023 09-30-2023 false Bain Capital Life Sciences Investors, LLC

200 Clarendon Street Boston MA 02116

13F HOLDINGS REPORT 028-18477 Y Bain Capital Life Sciences Investors, LLC is (i) the general partner of Bain Capital Life Sciences Partners, LP, which is the general partner of Bain Capital Life Sciences Fund, L.P., (ii) the general partner of BC SW, LP, (iii) the manager of Bain Capital Life Sciences Investors II, LLC, which is the general partner of Bain Capital Life Sciences Fund II, L.P., which is the manager of BCLS II Investco (GP), LLC, which is the general partner of BCLS II Investco, LP, and (iv) the manager of Bain Capital Life Sciences III General Partner, LLC, which is the general partner of Bain Capital Life Sciences Fund III, L.P., which is the sole member of Bain Capital Life Sciences Opportunities III GP, LLC, which is the general partner of Bain Capital Life Sciences Opportunities III, LP. The shares of Savara Inc. ("SVRA") are as reported on Amendment No. 2 to the Schedule 13D filed by Bain Capital Life Sciences Fund II, L.P., BCIP Life Sciences Associates, LP and BCLS II Investco, LP on 7/19/23 and reflect the exercise of securities held by such persons for SVRA common stock, after giving effect to provisions that prevent exercise if such persons would beneficially own more than 9.99% of the SVRA common stock following such exercise. As of 9/30/23, such persons held 6,913,208 shares of SVRA common stock. The shares of Syros Pharmaceuticals, Inc. ("SYRS") are as reported on Amendment No. 2 to the Schedule 13G filed by Bain Capital Life Sciences Fund II, L.P., BCIP Life Sciences Associates, LP and BCLS II Equity Opportunities, LP on 2/14/23 and reflect the exercise of securities held by such persons for SYRS common stock, after giving effect to provisions that prevent exercise if such persons would beneficially own more than 9.99% of the SYRS common stock following such exercise. As of 9/30/23, such persons held 1,082,404 shares of SYRS common stock. The shares of X4 Pharmaceuticals, Inc. ("XFOR") reflect the exercise of securities held by Bain Capital Life Sciences Fund, L.P., Bain Capital Life Sciences Fund II, L.P., BCIP Life Sciences Associates, LP, BCLS II Investco, LP and BCLS I Investco, LP for XFOR common stock, after giving effect to provisions that prevent exercise if such persons would beneficially own more than 9.99% of the XFOR common stock following such exercise. As of 9/30/23, such persons held 14,879,809 shares of XFOR common stock. Adam Koppel 617-516-2000 /s/ Adam Koppel Boston MA 11-14-2023 11 31 894220736 false 1 28-18476 Bain Capital Life Sciences Partners, LP 2 28-18478 Bain Capital Life Sciences Fund, L.P. 3 28-20270 BC SW, LP 4 28-20816 Bain Capital Life Sciences Investors II, LLC 5 28-20814 Bain Capital Life Sciences Fund II, L.P. 6 28-22976 BCLS II Investco (GP), LLC 7 28-22978 BCLS II Investco, LP 8 28-22975 Bain Capital Life Sciences III General Partner, LLC 9 28-22979 Bain Capital Life Sciences Fund III, L.P. 10 28-22968 Bain Capital Life Sciences Opportunities III GP, LLC 11 28-22966 Bain Capital Life Sciences Opportunities III, LP INFORMATION TABLE 2 28093.xml INFORMATION TABLE FOR FORM 13F 2SEVENTY BIO INC COMMON STOCK 901384107 5522892 1408901 SH SOLE 1408901 0 0 ACLARIS THERAPEUTICS INC COM 00461U105 23290000 3400000 SH SOLE 3400000 0 0 ANNEXON INC COM 03589W102 13456545 5701926 SH SOLE 5701926 0 0 ARCUTIS BIOTHERAPEUTICS INC COM 03969K108 15930000 3000000 SH SOLE 3000000 0 0 ATEA PHARMACEUTICALS INC COM 04683R106 7456914 2485638 SH SOLE 2485638 0 0 C4 THERAPEUTICS INC COM STK 12529R107 3054511 1642210 SH SOLE 1642210 0 0 CABALETTA BIO INC COM 12674W109 30440000 2000000 SH SOLE 2000000 0 0 CARA THERAPEUTICS INC COM 140755109 39725 23646 SH SOLE 23646 0 0 CRINETICS PHARMACEUTICALS IN COM 22663K107 37934916 1275552 SH SOLE 1275552 0 0 CYMABAY THERAPEUTICS INC COM 23257D103 13627278 913969 SH SOLE 913969 0 0 DISC MEDICINE INC COM 254604101 62602964 1332545 SH SOLE 1332545 0 0 DYNAVAX TECHNOLOGIES CORP COM NEW 268158201 13514550 915000 SH SOLE 915000 0 0 EQRX INC COM 26886C107 22207932 10003573 SH SOLE 10003573 0 0 INVIVYD INC COM 00534A102 3293252 1937207 SH SOLE 1937207 0 0 MARINUS PHARMACEUTICALS INC COM NEW 56854Q200 11520017 1431058 SH SOLE 1431058 0 0 MERSANA THERAPEUTICS INC COM 59045L106 11002865 8663673 SH SOLE 8663673 0 0 NATERA INC COM 632307104 30983717 700197 SH SOLE 700197 0 0 NAUTILUS BIOTECHNOLOGY INC COM 63909J108 6320000 2000000 SH SOLE 2000000 0 0 NEWAMSTERDAM PHARMA COMPANY ORDINARY SHARES N62509109 96883695 10473913 SH SOLE 10473913 0 0 NEWAMSTERDAM PHARMA COMPANY *W EXP 11/22/202 N62509117 190000 100000 SH SOLE 100000 0 0 NURIX THERAPEUTICS INC COM 67080M103 14327860 1822883 SH SOLE 1822883 0 0 NUVALENT INC COM 670703107 164446964 3577267 SH SOLE 3577267 0 0 PHARVARIS N V COM N69605108 99856146 4784674 SH SOLE 4784674 0 0 RAPID MICRO BIOSYSTEMS INC CLASS A COM 75340L104 9109325 8434560 SH SOLE 8434560 0 0 SAVARA INC COM 805111101 53799799 14232751 SH SOLE 14232751 0 0 SOLID BIOSCIENCES INC COM NEW 83422E204 7888663 3130422 SH SOLE 3130422 0 0 SPRINGWORKS THERAPEUTICS INC COM 85205L107 71239818 3081307 SH SOLE 3081307 0 0 SYROS PHARMACEUTICALS INC COM NEW 87184Q206 8392541 2124694 SH SOLE 2124694 0 0 TANGO THERAPEUTICS INC COM 87583X109 32571385 2892663 SH SOLE 2892663 0 0 X4 PHARMACEUTICALS INC COM 98420X103 17397041 15960588 SH SOLE 15960588 0 0 XILIO THERAPEUTICS INC COM 98422T100 5919421 2805413 SH SOLE 2805413 0 0