Bain Capital Life Sciences Investors, LLC Long-Term Concentrated

CIK: 0001703031 · Show all filings

Period: Q4 2025 (← Previous)

Filing Date: Feb 17, 2026

Total Value ($000): $1,305,661 (100.0% shares, 0.0% debt)

Holdings (19)

Increased Positions (4)

OLMA OLEMA PHARMACEUTICALS INC 16.3%

Value ($000) $212,716 (+217.5%) Shares 8,508,641 (+24.3%) Est. Cost $11.52 Unrealized +54.5%

XFOR X4 PHARMACEUTICALS INC 2.4%

Value ($000) $31,870 (+282.4%) Shares 7,967,454 (+227.0%) Est. Cost $3.42 Unrealized +6.3%

CCCC C4 THERAPEUTICS INC 1.0%

Value ($000) $13,698 (+454.9%) Shares 7,171,910 (+545.0%) Est. Cost $6.50 Unrealized -63.5%

XLO XILIO THERAPEUTICS INC 0.4%

Value ($000) $4,720 (+22.6%) Shares 7,372,686 (+61.4%) Est. Cost $7.01 Unrealized -89.3%

Ticker	Issuer	Shares	Value ($000)	%	Est. Cost	Unrealized	Class	CUSIP
OLMA	OLEMA PHARMACEUTICALS INC	8,508,641 (+24.3%)	$212,716 (+217.5%)	16.3%	$11.52	+54.5%	COM	68062P106
XFOR	X4 PHARMACEUTICALS INC	7,967,454 (+227.0%)	$31,870 (+282.4%)	2.4%	$3.42	+6.3%	COM NEW	98420X202
CCCC	C4 THERAPEUTICS INC	7,171,910 (+545.0%)	$13,698 (+454.9%)	1.0%	$6.50	-63.5%	COM STK	12529R107
XLO	XILIO THERAPEUTICS INC	7,372,686 (+61.4%)	$4,720 (+22.6%)	0.4%	$7.01	-89.3%	COM	98422T100

Exited Positions (2)

— CIDARA THERAPEUTICS INC 22.2%

Value ($000) $289,290 Shares 3,020,990 Est. Cost $47.98 Unrealized —

IPSC CENTURY THERAPEUTICS INC 0.1%

Value ($000) $1,762 Shares 3,538,609 Est. Cost $3.16 Unrealized -80.7%

Ticker	Issuer	Shares	Value ($000)	%	Est. Cost	Unrealized	Class	CUSIP
—	CIDARA THERAPEUTICS INC	3,020,990	$289,290	22.2%	$47.98	—	—	171757206
IPSC	CENTURY THERAPEUTICS INC	3,538,609	$1,762	0.1%	$3.16	-80.7%	—	15673T100

Decreased Positions (6)

NAMS NEWAMSTERDAM PHARMA COMPANY 19.6%

Value ($000) $256,314 (-15.9%) Shares 7,306,566 (-31.8%) Est. Cost $10.88 Unrealized +234.4%

DNTH DIANTHUS THERAPEUTICS INC 2.3%

Value ($000) $30,643 (-40.8%) Shares 743,592 (-43.5%) Est. Cost $21.73 Unrealized +78.4%

TNGX TANGO THERAPEUTICS INC 0.4%

Value ($000) $5,790 (-74.6%) Shares 653,493 (-75.9%) Est. Cost $10.01 Unrealized -13.9%

UPB UPSTREAM BIO INC 2.8%

Value ($000) $36,097 (-21.3%) Shares 1,329,544 (-45.5%) Est. Cost $21.55 Unrealized +15.5%

KYTX KYVERNA THERAPEUTICS INC 2.2%

Value ($000) $29,234 (+44.6%) Shares 3,110,000 (-7.7%) Est. Cost $27.08 Unrealized -72.6%

PHVS PHARVARIS N V 6.0%

Value ($000) $77,758 (-2.0%) Shares 2,802,081 (-11.9%) Est. Cost $23.89 Unrealized +0.8%

Ticker	Issuer	Shares	Value ($000)	%	Est. Cost	Unrealized	Class	CUSIP
NAMS	NEWAMSTERDAM PHARMA COMPANY	7,306,566 (-31.8%)	$256,314 (-15.9%)	19.6%	$10.88	+234.4%	ORDINARY SHARES	N62509109
DNTH	DIANTHUS THERAPEUTICS INC	743,592 (-43.5%)	$30,643 (-40.8%)	2.3%	$21.73	+78.4%	COM	252828108
TNGX	TANGO THERAPEUTICS INC	653,493 (-75.9%)	$5,790 (-74.6%)	0.4%	$10.01	-13.9%	COM	87583X109
UPB	UPSTREAM BIO INC	1,329,544 (-45.5%)	$36,097 (-21.3%)	2.8%	$21.55	+15.5%	COM	91678A107
KYTX	KYVERNA THERAPEUTICS INC	3,110,000 (-7.7%)	$29,234 (+44.6%)	2.2%	$27.08	-72.6%	COM	501976104
PHVS	PHARVARIS N V	2,802,081 (-11.9%)	$77,758 (-2.0%)	6.0%	$23.89	+0.8%	COM	N69605108

Unchanged Positions (9)

HTFL HEARTFLOW INC 27.8%

Value ($000) $362,864 Shares 12,448,158 Est. Cost $32.24 Unrealized -0.1%

SVRA SAVARA INC 8.1%

Value ($000) $106,132 Shares 17,600,621 Est. Cost $2.08 Unrealized +135.7%

ANNX ANNEXON INC 2.0%

Value ($000) $26,350 Shares 5,249,069 Est. Cost $11.24 Unrealized -66.0%

— MERSANA THERAPEUTICS INC 0.8%

Value ($000) $10,026 Shares 346,545 Est. Cost $7.76 Unrealized —

SLDB SOLID BIOSCIENCES INC 3.4%

Value ($000) $44,622 Shares 7,911,669 Est. Cost $5.76 Unrealized -5.9%

RPID RAPID MICRO BIOSYSTEMS INC 1.9%

Value ($000) $24,460 Shares 8,434,560 Est. Cost $20.66 Unrealized -83.2%

AVIR ATEA PHARMACEUTICALS INC 0.7%

Value ($000) $8,874 Shares 2,485,638 Est. Cost $32.23 Unrealized -90.1%

CABA CABALETTA BIO INC 1.6%

Value ($000) $21,193 Shares 9,677,125 Est. Cost $3.63 Unrealized -31.8%

NAMSW NEWAMSTERDAM PHARMA COMPANY 0.2%

Value ($000) $2,300 Shares 99,999 Est. Cost $0.00 Unrealized —

Ticker	Issuer	Shares	Value ($000)	%	Est. Cost	Unrealized	Class	CUSIP
HTFL	HEARTFLOW INC	12,448,158	$362,864	27.8%	$32.24	-0.1%	COM	42238D107
SVRA	SAVARA INC	17,600,621	$106,132	8.1%	$2.08	+135.7%	COM	805111101
ANNX	ANNEXON INC	5,249,069	$26,350	2.0%	$11.24	-66.0%	COM	03589W102
—	MERSANA THERAPEUTICS INC	346,545	$10,026	0.8%	$7.76	—	COM	59045L205
SLDB	SOLID BIOSCIENCES INC	7,911,669	$44,622	3.4%	$5.76	-5.9%	COM NEW	83422E204
RPID	RAPID MICRO BIOSYSTEMS INC	8,434,560	$24,460	1.9%	$20.66	-83.2%	CLASS A COM	75340L104
AVIR	ATEA PHARMACEUTICALS INC	2,485,638	$8,874	0.7%	$32.23	-90.1%	COM	04683R106
CABA	CABALETTA BIO INC	9,677,125	$21,193	1.6%	$3.63	-31.8%	COM	12674W109
NAMSW	NEWAMSTERDAM PHARMA COMPANY	99,999	$2,300	0.2%	$0.00	—	*W EXP 99/99/999	N62509117