Bain Capital Life Sciences Investors, LLC

Q4 2025 13F-HR Detailed Holdings

Location
Boston, MA
Holdings as of
12/31/2025
Date filed
2/17/2026
Form type
13F-HR
Num holdings
19
Total value ($000)
$1,305,661
Net value change ($000)
-201,015 (-13.3%)
New positions
0
Sold out positions
2
Turnover %
22.3%
Sector allocation + QoQ delta (equities-only)

Holdings broken out by other managers reported in the original SEC filing. View aggregated holdings

Prev filing: 11/14/2025 Next filing: — SEC filing
You are on the SEC detailed breakdown page. Rows are shown as reported in the filing (including other manager, discretion, and voting authority fields), and are not merged like the standard holdings view. Switch to aggregated holdings.

Snapshot: Change Analysis

Compared to Q3 2025
Methodology: sector metrics are equities-only; instrument mix chart is ex-options; options exposure is shown separately. Why this matters.
Top Adds (Value $000, Stocks/ETFs)
OLMA 145,714 217.5%
SVRA 43,298 68.9%
XFOR 23,537 282.5%
CCCC 11,230 455.0%
ANNX 10,340 64.6%
KYTX 9,024 44.7%
MRSN 7,337 272.9%
AVIR 1,666 23.1%
XLO 872 22.7%
Top Reduces (Value $000, Stocks/ETFs)
CDTX -289,290 -100.0%
HTFL -56,141 -13.4%
NAMS -48,537 -15.9%
DNTH -21,137 -40.8%
TNGX -16,991 -74.6%
UPB -9,791 -21.3%
SLDB -4,193 -8.6%
RPID -3,711 -13.2%
IPSC -1,762 -100.0%
PHVS -1,615 -2.0%
Instrument mix + QoQ Δ (ex-options)
How this table is calculated: SEC VALUE ($000) is used as reported. For derivatives (PUT/CALL/WARRANT/RIGHT), SEC value represents reported underlying exposure, not premium cash paid/received. Column % is bucket-based: non-options share is calculated inside non-option total, options share is calculated inside options total. Details.
Filter:
Instrument:
Issuer Name Ticker Sector Industry Class History Value ($000) % Shares Shares Δ Shares Δ% Value Δ ($000) Value Δ% Principal Option Type Discretion Other Manager Sole Shared None

Other Managers

Num Name File Number
1 Bain Capital Life Sciences Investors II, LLC 28-20816
2 Bain Capital Life Sciences Fund II, L.P. 28-20814
3 BCLS II Investco (GP), LLC 28-22976
4 BCLS II Investco, LP 28-22978
5 Bain Capital Life Sciences III General Partner, LLC 28-22975
6 Bain Capital Life Sciences Fund III, L.P. 28-22979
7 Bain Capital Life Sciences Opportunities III GP, LLC 28-22968
8 Bain Capital Life Sciences Opportunities III, LP 28-22966
9 BCLS Fund III Investments GP, LLC 28-25138
10 BCLS Fund III Investments, LP 28-25140
11 Bain Capital Life Sciences IV General Partner, LLC
12 Bain Capital Life Sciences Fund IV, L.P.
13 Bain Capital Life Sciences Opportunities IV GP, LLC
14 Bain Capital Life Sciences Opportunities IV, L.P.