Bain Capital Life Sciences Investors, LLC

Q1 2026 13F-HR Detailed Holdings

Location
Boston, MA
Holdings as of
3/31/2026
Date filed
5/15/2026
Form type
13F-HR
Num holdings
20
Total value ($000)
$1,108,816
Net value change ($000)
-196,845 (-15.1%)
New positions
4
Sold out positions
3
Turnover %
7.4%
Sector allocation + QoQ delta (equities-only)

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

Prev filing: 2/17/2026 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 Q4 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)
SLDB 26,001 58.3%
CNTA 25,222 NEW
ALKERMES PLC 21,570 NEW
IRON 9,031 NEW
XLO 5,584 NEW
CCCC 5,164 37.7%
CABA 4,838 22.8%
AVIR 3,826 43.1%
ANNX 2,528 9.6%
XFOR 1,036 3.3%
Top Reduces (Value $000, Stocks/ETFs)
HTFL -108,660 -29.9%
OLMA -101,290 -47.6%
UPB -28,292 -78.4%
NAMS -22,431 -8.8%
SVRA -10,033 -9.5%
MRSN -10,026 -100.0%
TNGX -5,790 -100.0%
RPID -5,314 -21.7%
XLO -4,720 -100.0%
KYTX -2,395 -8.2%
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 028-26578
12 Bain Capital Life Sciences Fund IV, L.P. 028-26577
13 Bain Capital Life Sciences Opportunities IV GP, LLC 028-26576
14 Bain Capital Life Sciences Opportunities IV, L.P. 028-26575