Filed: 2/17/2026ACC: 0001193125-26-054833
📋 What this filing means
BAIN CAPITAL LIFE SCIENCES INVESTORS, LLC filed this quarterly 13F‑HR report disclosing 19 equity positions with a total reported market value of $1.31B. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.
19
Positions
$1.31B
Total AUM (reported)
111.22M
Total Shares
Allocation by class
COM$932.40M71.4%
ORDINARY SHARES$256.31M19.6%
COM NEW$76.49M5.9%
CLASS A COM$24.46M1.9%
COM STK$13.70M1.0%
*W EXP 99/99/999$2.30M0.2%
Portfolio Concentration
Top 3$831.89M63.7%
4–10$356.36M27.3%
11–25$117.41M9.0%
Top 3 weight
63.7%
Top 10 weight
91.0%
Voting Authority Distribution
Total shares with voting rights: 111.22M
Sole
Full voting authority
111.22M
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)
Sole19
Shared0
Other0
Dominant voting typeSole · 100.0% of voting shares
Institutional Holdings19
Rows:
HEARTFLOW INC
SOLEShares12.45M
TypeSH
Market value$362.86M
27.79%
Sole
12.45M
Shared
0.00
None
0.00
NEWAMSTERDAM PHARMA COMPANY
SOLEShares7.31M
TypeSH
Market value$256.31M
19.63%
Sole
7.31M
Shared
0.00
None
0.00
OLEMA PHARMACEUTICALS INC
SOLEShares8.51M
TypeSH
Market value$212.72M
16.29%
Sole
8.51M
Shared
0.00
None
0.00
SAVARA INC
SOLEShares17.60M
TypeSH
Market value$106.13M
8.13%
Sole
17.60M
Shared
0.00
None
0.00
PHARVARIS N V
SOLEShares2.80M
TypeSH
Market value$77.76M
5.96%
Sole
2.80M
Shared
0.00
None
0.00
SOLID BIOSCIENCES INC
SOLEShares7.91M
TypeSH
Market value$44.62M
3.42%
Sole
7.91M
Shared
0.00
None
0.00
UPSTREAM BIO INC
SOLEShares1.33M
TypeSH
Market value$36.10M
2.76%
Sole
1.33M
Shared
0.00
None
0.00
X4 PHARMACEUTICALS INC
SOLEShares7.97M
TypeSH
Market value$31.87M
2.44%
Sole
7.97M
Shared
0.00
None
0.00
DIANTHUS THERAPEUTICS INC
SOLEShares743.59K
TypeSH
Market value$30.64M
2.35%
Sole
743.59K
Shared
0.00
None
0.00
KYVERNA THERAPEUTICS INC
SOLEShares3.11M
TypeSH
Market value$29.23M
2.24%
Sole
3.11M
Shared
0.00
None
0.00
ANNEXON INC
SOLEShares5.25M
TypeSH
Market value$26.35M
2.02%
Sole
5.25M
Shared
0.00
None
0.00
RAPID MICRO BIOSYSTEMS INC
SOLEShares8.43M
TypeSH
Market value$24.46M
1.87%
Sole
8.43M
Shared
0.00
None
0.00
CABALETTA BIO INC
SOLEShares9.68M
TypeSH
Market value$21.19M
1.62%
Sole
9.68M
Shared
0.00
None
0.00
C4 THERAPEUTICS INC
SOLEShares7.17M
TypeSH
Market value$13.70M
1.05%
Sole
7.17M
Shared
0.00
None
0.00
MERSANA THERAPEUTICS INC
SOLEShares346.55K
TypeSH
Market value$10.03M
0.77%
Sole
346.55K
Shared
0.00
None
0.00
ATEA PHARMACEUTICALS INC
SOLEShares2.49M
TypeSH
Market value$8.87M
0.68%
Sole
2.49M
Shared
0.00
None
0.00
TANGO THERAPEUTICS INC
SOLEShares653.49K
TypeSH
Market value$5.79M
0.44%
Sole
653.49K
Shared
0.00
None
0.00
XILIO THERAPEUTICS INC
SOLEShares7.37M
TypeSH
Market value$4.72M
0.36%
Sole
7.37M
Shared
0.00
None
0.00
NEWAMSTERDAM PHARMA COMPANY
SOLEShares100K
TypeSH
Market value$2.30M
0.18%
Sole
100K
Shared
0.00
None
0.00
| Issuer | Class | Shares | Type | Value / Portfolio % | Voting — Sole | Shared | None |
|---|---|---|---|---|---|---|---|
HEARTFLOW INCSOLE | COM | 12.45M | SH | $362.86M 27.79% | 12.45M | 0.00 | 0.00 |
NEWAMSTERDAM PHARMA COMPANYSOLE | ORDINARY SHARES | 7.31M | SH | $256.31M 19.63% | 7.31M | 0.00 | 0.00 |
OLEMA PHARMACEUTICALS INCSOLE | COM | 8.51M | SH | $212.72M 16.29% | 8.51M | 0.00 | 0.00 |
SAVARA INCSOLE | COM | 17.60M | SH | $106.13M 8.13% | 17.60M | 0.00 | 0.00 |
PHARVARIS N VSOLE | COM | 2.80M | SH | $77.76M 5.96% | 2.80M | 0.00 | 0.00 |
SOLID BIOSCIENCES INCSOLE | COM NEW | 7.91M | SH | $44.62M 3.42% | 7.91M | 0.00 | 0.00 |
UPSTREAM BIO INCSOLE | COM | 1.33M | SH | $36.10M 2.76% | 1.33M | 0.00 | 0.00 |
X4 PHARMACEUTICALS INCSOLE | COM NEW | 7.97M | SH | $31.87M 2.44% | 7.97M | 0.00 | 0.00 |
DIANTHUS THERAPEUTICS INCSOLE | COM | 743.59K | SH | $30.64M 2.35% | 743.59K | 0.00 | 0.00 |
KYVERNA THERAPEUTICS INCSOLE | COM | 3.11M | SH | $29.23M 2.24% | 3.11M | 0.00 | 0.00 |
ANNEXON INCSOLE | COM | 5.25M | SH | $26.35M 2.02% | 5.25M | 0.00 | 0.00 |
RAPID MICRO BIOSYSTEMS INCSOLE | CLASS A COM | 8.43M | SH | $24.46M 1.87% | 8.43M | 0.00 | 0.00 |
CABALETTA BIO INCSOLE | COM | 9.68M | SH | $21.19M 1.62% | 9.68M | 0.00 | 0.00 |
C4 THERAPEUTICS INCSOLE | COM STK | 7.17M | SH | $13.70M 1.05% | 7.17M | 0.00 | 0.00 |
MERSANA THERAPEUTICS INCSOLE | COM | 346.55K | SH | $10.03M 0.77% | 346.55K | 0.00 | 0.00 |
ATEA PHARMACEUTICALS INCSOLE | COM | 2.49M | SH | $8.87M 0.68% | 2.49M | 0.00 | 0.00 |
TANGO THERAPEUTICS INCSOLE | COM | 653.49K | SH | $5.79M 0.44% | 653.49K | 0.00 | 0.00 |
XILIO THERAPEUTICS INCSOLE | COM | 7.37M | SH | $4.72M 0.36% | 7.37M | 0.00 | 0.00 |
NEWAMSTERDAM PHARMA COMPANYSOLE | *W EXP 99/99/999 | 100K | SH | $2.30M 0.18% | 100K | 0.00 | 0.00 |