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Bain Capital Life Sciences Investors, LLC Top Holdings and 13F Report (2026)

About Bain Capital Life Sciences Investors, LLC

Investment Activity

  • Bain Capital Life Sciences Investors, LLC has $1.11 billion in total holdings as of March 31, 2026.
  • Bain Capital Life Sciences Investors, LLC owns shares of 20 different stocks, but just 8 companies or ETFs make up 80% of its holdings.
  • Approximately 6.77% of the portfolio was purchased this quarter.
  • About 11.29% of the portfolio was sold this quarter.
  • This quarter, Bain Capital Life Sciences Investors, LLC has purchased 19 new stocks and bought additional shares in 1 stock.
  • Bain Capital Life Sciences Investors, LLC sold shares of 7 stocks and completely divested from 3 stocks this quarter.

Largest Holdings

HEARTFLOW INC
$254,203,684
NewAmsterdam Pharma
$233,883,178
Savara
$96,099,391
Pharvaris
$75,583,129

Largest New Holdings this Quarter

152309100 - Centessa Pharmaceuticals
$25,222,200 Holding
G01767105 - Alkermes
$21,569,600 Holding
254604101 - Disc Medicine
$9,030,502 Holding
98422T209 - XILIO THERAPEUTICS INC
$5,584,417 Holding

Largest Purchases this Quarter

Centessa Pharmaceuticals
635,000 shares (about $25.22M)
Alkermes
610,000 shares (about $21.57M)
Solid Biosciences
1,897,150 shares (about $13.66M)
Disc Medicine
141,234 shares (about $9.03M)
XILIO THERAPEUTICS INC
664,021 shares (about $5.58M)

Largest Sales this Quarter

HEARTFLOW INC
2,000,000 shares (about $48.66M)
DIANTHUS THERAPEUTICS INC
381,122 shares (about $31.98M)
Olema Pharmaceuticals
1,035,403 shares (about $15.44M)
UPSTREAM BIO INC
462,333 shares (about $4.16M)
Pharvaris
126,572 shares (about $3.58M)

Sector Allocation Over Time

Map of 500 Largest Holdings ofBain Capital Life Sciences Investors, LLC

 
 
Selling
 
 
Neutral
 
 
Buying
Issuer NameHoldings ValueApproximate Purchase/SaleChange in SharesShares Held% of PortfolioSector
HEARTFLOW INC
$254,203,684$48,660,000 â–¼-16.1%10,448,15822.9%COM
NewAmsterdam Pharma Company N.V. stock logo
NAMS
NewAmsterdam Pharma
$233,883,1780.0%7,306,56621.1%Medical
Olema Pharmaceuticals, Inc. stock logo
OLMA
Olema Pharmaceuticals
$111,425,979$15,437,859 â–¼-12.2%7,473,23810.0%Medical
Savara Inc. stock logo
SVRA
Savara
$96,099,3910.0%17,600,6218.7%Medical
Pharvaris N.V. stock logo
PHVS
Pharvaris
$75,583,129$3,575,659 â–¼-4.5%2,675,5096.8%Medical
Solid Biosciences Inc. stock logo
SLDB
Solid Biosciences
$70,623,497$13,659,480 â–²24.0%9,808,8196.4%Medical
X4 PHARMACEUTICALS INC
$32,905,5850.0%7,967,4543.0%COM NEW
DIANTHUS THERAPEUTICS INC
$30,418,482$31,983,758 â–¼-51.3%362,4702.7%COM
Annexon, Inc. stock logo
ANNX
Annexon
$28,878,214$201,628 â–¼-0.7%5,212,6742.6%Medical
KYVERNA THERAPEUTICS INC
$26,839,3000.0%3,110,0002.4%COM
Cabaletta Bio, Inc. stock logo
CABA
Cabaletta Bio
$26,031,4660.0%9,677,1252.3%Medical
Centessa Pharmaceuticals PLC Sponsored ADR stock logo
CNTA
Centessa Pharmaceuticals
$25,222,200$25,222,200 â–²New Holding635,0002.3%Medical
Alkermes plc stock logo
ALKS
Alkermes
$21,569,600$21,569,600 â–²New Holding610,0001.9%Medical
Rapid Micro Biosystems, Inc. stock logo
RPID
Rapid Micro Biosystems
$19,146,4510.0%8,434,5601.7%Medical
C4 Therapeutics, Inc. stock logo
CCCC
C4 Therapeutics
$18,862,1230.0%7,171,9101.7%Medical
Atea Pharmaceuticals, Inc. stock logo
AVIR
Atea Pharmaceuticals
$12,700,232$672,500 â–¼-5.0%2,360,6381.1%Medical
Disc Medicine, Inc. stock logo
IRON
Disc Medicine
$9,030,502$9,030,502 â–²New Holding141,2340.8%Medical
UPSTREAM BIO INC
$7,804,899$4,160,997 â–¼-34.8%867,2110.7%COM
XILIO THERAPEUTICS INC
$5,584,417$5,584,417 â–²New Holding664,0210.5%COM
NewAmsterdam Pharma stock logo
NAMSW
NewAmsterdam Pharma
$2,003,9800.0%99,9990.2%Medical
MERSANA THERAPEUTICS INC
$0$10,025,547 â–¼-100.0%00.0%COM
Tango Therapeutics, Inc. stock logo
TNGX
Tango Therapeutics
$0$5,789,948 â–¼-100.0%00.0%Medical
Xilio Therapeutics, Inc. stock logo
XLO
Xilio Therapeutics
$0$4,719,994 â–¼-100.0%00.0%Medical

Showing largest 100 holdings. View all holdings.
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