Filed: 8/14/2025ACC: 0000950123-25-008312
📋 What this filing means
BAIN CAPITAL LIFE SCIENCES INVESTORS, LLC filed this quarterly 13F‑HR report disclosing 23 equity positions with a total reported market value of $799.27M. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.
23
Positions
$799.27M
Total AUM (reported)
109.97M
Total Shares
Allocation by class
COM$412.24M51.6%
ORDINARY SHARES$194.12M24.3%
COM NEW$161.41M20.2%
CLASS A COM$29.10M3.6%
COM STK$1.59M0.2%
*W EXP 99/99/999$800.0K0.1%
Portfolio Concentration
Top 3$426.36M53.3%
4–10$272.20M34.1%
11–25$100.71M12.6%
Top 3 weight
53.3%
Top 10 weight
87.4%
Voting Authority Distribution
Total shares with voting rights: 109.97M
Sole
Full voting authority
109.97M
shares
% of voting shares100.0%
Shared
Joint voting authority
0.00
shares
% of voting shares0.0%
None
No voting authority
0.00
shares
% of voting shares0.0%
Investment Discretion (by position count)
Sole23
Shared0
Other0
Dominant voting typeSole · 100.0% of voting shares
Institutional Holdings23
Rows:
NEWAMSTERDAM PHARMA COMPANY
SOLEShares10.72M
TypeSH
Market value$194.12M
24.29%
Sole
10.72M
Shared
0.00
None
0.00
CIDARA THERAPEUTICS INC
SOLEShares2.50M
TypeSH
Market value$121.81M
15.24%
Sole
2.50M
Shared
0.00
None
0.00
NUVALENT INC
SOLEShares1.45M
TypeSH
Market value$110.43M
13.82%
Sole
1.45M
Shared
0.00
None
0.00
PHARVARIS N V
SOLEShares3.30M
TypeSH
Market value$58.14M
7.27%
Sole
3.30M
Shared
0.00
None
0.00
DIANTHUS THERAPEUTICS INC
SOLEShares2.48M
TypeSH
Market value$46.24M
5.79%
Sole
2.48M
Shared
0.00
None
0.00
SAVARA INC
SOLEShares17.60M
TypeSH
Market value$40.13M
5.02%
Sole
17.60M
Shared
0.00
None
0.00
SOLID BIOSCIENCES INC
SOLEShares7.91M
TypeSH
Market value$38.53M
4.82%
Sole
7.91M
Shared
0.00
None
0.00
DISC MEDICINE INC
SOLEShares583.50K
TypeSH
Market value$30.90M
3.87%
Sole
583.50K
Shared
0.00
None
0.00
OLEMA PHARMACEUTICALS INC
SOLEShares6.84M
TypeSH
Market value$29.16M
3.65%
Sole
6.84M
Shared
0.00
None
0.00
RAPID MICRO BIOSYSTEMS INC
SOLEShares8.43M
TypeSH
Market value$29.10M
3.64%
Sole
8.43M
Shared
0.00
None
0.00
UPSTREAM BIO INC
SOLEShares2.44M
TypeSH
Market value$26.79M
3.35%
Sole
2.44M
Shared
0.00
None
0.00
CABALETTA BIO INC
SOLEShares9.68M
TypeSH
Market value$14.71M
1.84%
Sole
9.68M
Shared
0.00
None
0.00
TANGO THERAPEUTICS INC
SOLEShares2.71M
TypeSH
Market value$13.89M
1.74%
Sole
2.71M
Shared
0.00
None
0.00
ANNEXON INC
SOLEShares5.25M
TypeSH
Market value$12.60M
1.58%
Sole
5.25M
Shared
0.00
None
0.00
KYVERNA THERAPEUTICS INC
SOLEShares3.37M
TypeSH
Market value$10.34M
1.29%
Sole
3.37M
Shared
0.00
None
0.00
ATEA PHARMACEUTICALS INC
SOLEShares2.49M
TypeSH
Market value$8.95M
1.12%
Sole
2.49M
Shared
0.00
None
0.00
XILIO THERAPEUTICS INC
SOLEShares4.57M
TypeSH
Market value$3.10M
0.39%
Sole
4.57M
Shared
0.00
None
0.00
CENTURY THERAPEUTICS INC
SOLEShares5.41M
TypeSH
Market value$3.02M
0.38%
Sole
5.41M
Shared
0.00
None
0.00
MERSANA THERAPEUTICS INC
SOLEShares8.66M
TypeSH
Market value$2.56M
0.32%
Sole
8.66M
Shared
0.00
None
0.00
C4 THERAPEUTICS INC
SOLEShares1.11M
TypeSH
Market value$1.59M
0.20%
Sole
1.11M
Shared
0.00
None
0.00
INVIVYD INC
SOLEShares1.80M
TypeSH
Market value$1.29M
0.16%
Sole
1.80M
Shared
0.00
None
0.00
X4 PHARMACEUTICALS INC
SOLEShares563.86K
TypeSH
Market value$1.07M
0.13%
Sole
563.86K
Shared
0.00
None
0.00
NEWAMSTERDAM PHARMA COMPANY
SOLEShares100K
TypeSH
Market value$800.0K
0.10%
Sole
100K
Shared
0.00
None
0.00
| Issuer | Class | Shares | Type | Value / Portfolio % | Voting — Sole | Shared | None |
|---|---|---|---|---|---|---|---|
NEWAMSTERDAM PHARMA COMPANYSOLE | ORDINARY SHARES | 10.72M | SH | $194.12M 24.29% | 10.72M | 0.00 | 0.00 |
CIDARA THERAPEUTICS INCSOLE | COM NEW | 2.50M | SH | $121.81M 15.24% | 2.50M | 0.00 | 0.00 |
NUVALENT INCSOLE | COM | 1.45M | SH | $110.43M 13.82% | 1.45M | 0.00 | 0.00 |
PHARVARIS N VSOLE | COM | 3.30M | SH | $58.14M 7.27% | 3.30M | 0.00 | 0.00 |
DIANTHUS THERAPEUTICS INCSOLE | COM | 2.48M | SH | $46.24M 5.79% | 2.48M | 0.00 | 0.00 |
SAVARA INCSOLE | COM | 17.60M | SH | $40.13M 5.02% | 17.60M | 0.00 | 0.00 |
SOLID BIOSCIENCES INCSOLE | COM NEW | 7.91M | SH | $38.53M 4.82% | 7.91M | 0.00 | 0.00 |
DISC MEDICINE INCSOLE | COM | 583.50K | SH | $30.90M 3.87% | 583.50K | 0.00 | 0.00 |
OLEMA PHARMACEUTICALS INCSOLE | COM | 6.84M | SH | $29.16M 3.65% | 6.84M | 0.00 | 0.00 |
RAPID MICRO BIOSYSTEMS INCSOLE | CLASS A COM | 8.43M | SH | $29.10M 3.64% | 8.43M | 0.00 | 0.00 |
UPSTREAM BIO INCSOLE | COM | 2.44M | SH | $26.79M 3.35% | 2.44M | 0.00 | 0.00 |
CABALETTA BIO INCSOLE | COM | 9.68M | SH | $14.71M 1.84% | 9.68M | 0.00 | 0.00 |
TANGO THERAPEUTICS INCSOLE | COM | 2.71M | SH | $13.89M 1.74% | 2.71M | 0.00 | 0.00 |
ANNEXON INCSOLE | COM | 5.25M | SH | $12.60M 1.58% | 5.25M | 0.00 | 0.00 |
KYVERNA THERAPEUTICS INCSOLE | COM | 3.37M | SH | $10.34M 1.29% | 3.37M | 0.00 | 0.00 |
ATEA PHARMACEUTICALS INCSOLE | COM | 2.49M | SH | $8.95M 1.12% | 2.49M | 0.00 | 0.00 |
XILIO THERAPEUTICS INCSOLE | COM | 4.57M | SH | $3.10M 0.39% | 4.57M | 0.00 | 0.00 |
CENTURY THERAPEUTICS INCSOLE | COM | 5.41M | SH | $3.02M 0.38% | 5.41M | 0.00 | 0.00 |
MERSANA THERAPEUTICS INCSOLE | COM | 8.66M | SH | $2.56M 0.32% | 8.66M | 0.00 | 0.00 |
C4 THERAPEUTICS INCSOLE | COM STK | 1.11M | SH | $1.59M 0.20% | 1.11M | 0.00 | 0.00 |
INVIVYD INCSOLE | COM | 1.80M | SH | $1.29M 0.16% | 1.80M | 0.00 | 0.00 |
X4 PHARMACEUTICALS INCSOLE | COM NEW | 563.86K | SH | $1.07M 0.13% | 563.86K | 0.00 | 0.00 |
NEWAMSTERDAM PHARMA COMPANYSOLE | *W EXP 99/99/999 | 100K | SH | $800.0K 0.10% | 100K | 0.00 | 0.00 |