Bain Capital Life Sciences Investors, LLC - Stock Holdings in 13F Filings (SEC)

Updated on March 15, 2026.

Based on 13F Filings filed with the SEC on February 17, 2026, for the 2025 Q4 period, Bain Capital Life Sciences Investors, LLC held in its portfolio 19 assets valued at $1,305,660,829 (i.e. $1.31B).

The most valuable assets in the portfolio included: HEARTFLOW INC ($362.86M), NEWAMSTERDAM PHARMA COMPANY ($256.31M), and OLEMA PHARMACEUTICALS INC ($212.72M).

The chart below shows the top 10 valuable assets, and the table below shows the top 19 valuable assets.

You can see similar for other investment managers.

Related Topics: SEC Topic List.

Data Source: SEC.

Top Valuable Stocks in Bain Capital Life Sciences Investors, LLC Portfolio

HEARTFLOW INC

NEWAMSTERDAM PHARMA COMPANY

OLEMA PHARMACEUTICALS INC

SAVARA INC

PHARVARIS N V

SOLID BIOSCIENCES INC

UPSTREAM BIO INC

X4 PHARMACEUTICALS INC

DIANTHUS THERAPEUTICS INC

KYVERNA THERAPEUTICS INC

Bain Capital Life Sciences Investors, LLC - Stock Holdings in 13F Filings (SEC)

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Name of Issuer	No. of Shares	Value ($)	Class
HEARTFLOW INC	12448158	362863806	COM
NEWAMSTERDAM PHARMA COMPANY	7306566	256314335	ORDINARY SHARES
OLEMA PHARMACEUTICALS INC	8508641	212716025	COM
SAVARA INC	17600621	106131745	COM
PHARVARIS N V	2802081	77757748	COM
SOLID BIOSCIENCES INC	7911669	44621813	COM NEW
UPSTREAM BIO INC	1329544	36097120	COM
X4 PHARMACEUTICALS INC	7967454	31869816	COM NEW
DIANTHUS THERAPEUTICS INC	743592	30643426	COM
KYVERNA THERAPEUTICS INC	3110000	29234000	COM
ANNEXON INC	5249069	26350326	COM
RAPID MICRO BIOSYSTEMS INC	8434560	24460224	CLASS A COM
CABALETTA BIO INC	9677125	21192904	COM
C4 THERAPEUTICS INC	7171910	13698348	COM STK
MERSANA THERAPEUTICS INC	346545	10025547	COM
ATEA PHARMACEUTICALS INC	2485638	8873728	COM
TANGO THERAPEUTICS INC	653493	5789948	COM
XILIO THERAPEUTICS INC	7372686	4719994	COM
NEWAMSTERDAM PHARMA COMPANY	99999	2299977	*W EXP 99/99/999