Bain Capital Life Sciences Investors, LLC Long-Term Concentrated

Name: Bain Capital Life Sciences Investors, LLC Q1 2025 13F Filing | 13F Explorer
Creator: Bain Capital Life Sciences Investors, LLC
Published: 2025-05-15

Location: Boston, MA

CIK: 0001703031 · Show all filings

Period: Q1 2025 (← Previous) (Next →)

Filing Date: May 15, 2025

Total Value: $676M (100.0% shares, 0.0% debt)

Holdings (24)

NAMS NEWAMSTERDAM PHARMA COMPANY 32.5%

Value $219M Shares 10,719,110 Est. Cost $10.88 Unrealized +104.3%

NUVL NUVALENT INC 15.2%

Value $103M Shares 1,447,267 Est. Cost $28.96 Unrealized +169.9%

PHVS PHARVARIS N V 7.7%

Value $51.86M Shares 3,303,381 Est. Cost $23.89 Unrealized -29.4%

IRON DISC MEDICINE INC 7.2%

Value $48.82M Shares 983,500 Est. Cost $25.40 Unrealized +118.9%

DNTH DIANTHUS THERAPEUTICS INC 7.2%

Value $48.79M Shares 2,689,707 Est. Cost $21.73 Unrealized +1.4%

SVRA SAVARA INC 7.2%

Value $48.75M Shares 17,600,621 Est. Cost $2.08 Unrealized +32.9%

SLDB SOLID BIOSCIENCES INC 4.3%

Value $29.27M Shares 7,911,669 Est. Cost $5.76 Unrealized -25.7%

OLMA OLEMA PHARMACEUTICALS INC 3.8%

Value $25.73M Shares 6,843,954 Est. Cost $9.99 Unrealized -49.6%

RPID RAPID MICRO BIOSYSTEMS INC 3.3%

Value $22.27M Shares 8,434,560 Est. Cost $20.66 Unrealized -89.0%

— CIDARA THERAPEUTICS INC 2.2%

Value $15.14M Shares 703,080 Est. Cost $10.75 Unrealized —

UPB UPSTREAM BIO INC 2.1%

Value $14.05M Shares 2,295,322 Est. Cost $22.33 Unrealized -57.2%

ANNX ANNEXON INC 1.5%

Value $10.13M Shares 5,249,069 Est. Cost $11.24 Unrealized -70.4%

AVIR ATEA PHARMACEUTICALS INC 1.1%

Value $7.432M Shares 2,485,638 Est. Cost $32.23 Unrealized -90.3%

KYTX KYVERNA THERAPEUTICS INC 1.0%

Value $6.501M Shares 3,368,370 Est. Cost $27.08 Unrealized -89.1%

— X4 PHARMACEUTICALS INC 0.6%

Value $3.999M Shares 16,915,784 Est. Cost $2.56 Unrealized —

CABA CABALETTA BIO INC 0.6%

Value $3.824M Shares 2,760,888 Est. Cost $8.83 Unrealized -75.9%

TNGX TANGO THERAPEUTICS INC 0.5%

Value $3.715M Shares 2,712,008 Est. Cost $10.01 Unrealized -75.5%

XLO XILIO THERAPEUTICS INC 0.5%

Value $3.308M Shares 4,566,817 Est. Cost $10.85 Unrealized -91.7%

— MERSANA THERAPEUTICS INC 0.4%

Value $2.982M Shares 8,663,673 Est. Cost $12.65 Unrealized —

IPSC CENTURY THERAPEUTICS INC 0.4%

Value $2.575M Shares 5,410,361 Est. Cost $3.16 Unrealized -76.2%

CCCC C4 THERAPEUTICS INC 0.3%

Value $1.779M Shares 1,111,910 Est. Cost $29.00 Unrealized -89.7%

IVVD INVIVYD INC 0.2%

Value $1.089M Shares 1,799,595 Est. Cost $37.11 Unrealized -97.6%

NAUT NAUTILUS BIOTECHNOLOGY INC 0.1%

Value $923K Shares 1,072,421 Est. Cost $10.83 Unrealized -86.3%

NAMSW NEWAMSTERDAM PHARMA COMPANY 0.1%

Value $899K Shares 100,000 Est. Cost $0.86 Unrealized —

Ticker	Issuer	Shares	Value	%	Est. Cost	Unrealized	Class	CUSIP
NAMS	NEWAMSTERDAM PHARMA COMPANY	10,719,110	$219M	32.5%	$10.88	+104.3%	ORDINARY SHARES	N62509109
NUVL	NUVALENT INC	1,447,267	$103M	15.2%	$28.96	+169.9%	COM	670703107
PHVS	PHARVARIS N V	3,303,381	$51.86M	7.7%	$23.89	-29.4%	COM	N69605108
IRON	DISC MEDICINE INC	983,500	$48.82M	7.2%	$25.40	+118.9%	COM	254604101
DNTH	DIANTHUS THERAPEUTICS INC	2,689,707	$48.79M	7.2%	$21.73	+1.4%	COM	252828108
SVRA	SAVARA INC	17,600,621	$48.75M	7.2%	$2.08	+32.9%	COM	805111101
SLDB	SOLID BIOSCIENCES INC	7,911,669	$29.27M	4.3%	$5.76	-25.7%	COM NEW	83422E204
OLMA	OLEMA PHARMACEUTICALS INC	6,843,954	$25.73M	3.8%	$9.99	-49.6%	COM	68062P106
RPID	RAPID MICRO BIOSYSTEMS INC	8,434,560	$22.27M	3.3%	$20.66	-89.0%	CLASS A COM	75340L104
—	CIDARA THERAPEUTICS INC	703,080	$15.14M	2.2%	$10.75	—	COM NEW	171757206
UPB	UPSTREAM BIO INC	2,295,322	$14.05M	2.1%	$22.33	-57.2%	COM	91678A107
ANNX	ANNEXON INC	5,249,069	$10.13M	1.5%	$11.24	-70.4%	COM	03589W102
AVIR	ATEA PHARMACEUTICALS INC	2,485,638	$7.432M	1.1%	$32.23	-90.3%	COM	04683R106
KYTX	KYVERNA THERAPEUTICS INC	3,368,370	$6.501M	1.0%	$27.08	-89.1%	COM	501976104
—	X4 PHARMACEUTICALS INC	16,915,784	$3.999M	0.6%	$2.56	—	COM	98420X103
CABA	CABALETTA BIO INC	2,760,888	$3.824M	0.6%	$8.83	-75.9%	COM	12674W109
TNGX	TANGO THERAPEUTICS INC	2,712,008	$3.715M	0.5%	$10.01	-75.5%	COM	87583X109
XLO	XILIO THERAPEUTICS INC	4,566,817	$3.308M	0.5%	$10.85	-91.7%	COM	98422T100
—	MERSANA THERAPEUTICS INC	8,663,673	$2.982M	0.4%	$12.65	—	COM	59045L106
IPSC	CENTURY THERAPEUTICS INC	5,410,361	$2.575M	0.4%	$3.16	-76.2%	COM	15673T100
CCCC	C4 THERAPEUTICS INC	1,111,910	$1.779M	0.3%	$29.00	-89.7%	COM STK	12529R107
IVVD	INVIVYD INC	1,799,595	$1.089M	0.2%	$37.11	-97.6%	COM	00534A102
NAUT	NAUTILUS BIOTECHNOLOGY INC	1,072,421	$923K	0.1%	$10.83	-86.3%	COM	63909J108
NAMSW	NEWAMSTERDAM PHARMA COMPANY	100,000	$899K	0.1%	$0.86	—	*W EXP 99/99/999	N62509117