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13F-HR filed by Bain Capital Life Sciences Investors, LLC

Bain Capital Life Sciences Investors, LLC filed this 13F-HR for the quarter ended 2025-09-30, filed 2025-11-14, with 21 holding rows worth $1,506,676,329.

Accession
0001193125-25-283094
Filed
2025-11-14
Accepted by EDGAR
acceptance time not in the bulk data set
Ingested
Source
SEC quarterly data set

Original filing

13F report for Q3 2025

A holdings report, 21 entries on the cover page, a total value of $1,506,676,329 stated on the cover page (in dollars after the unit check, H1), rows summing to $1,506,676,328 with VALUE read as dollars as filed, 13F file number 028-18477. The quarter's positions are built on this report. The resolved quarter.

Other managers

  • included managerBain Capital Life Sciences Partners, LP 028-18476
  • included managerBain Capital Life Sciences Fund, L.P. 028-18478
  • included managerBain Capital Life Sciences Investors II, LLC 028-20816
  • included managerBain Capital Life Sciences Fund II, L.P. 028-20814
  • included managerBCLS II Investco (GP), LLC 028-22976
  • included managerBCLS II Investco, LP 028-22978
  • included managerBain Capital Life Sciences III General Partner, LLC 028-22975
  • included managerBain Capital Life Sciences Fund III, L.P. 028-22979
  • included managerBain Capital Life Sciences Opportunities III GP, LLC 028-22968
  • included managerBain Capital Life Sciences Opportunities III, LP 028-22966
  • included managerBCLS Fund III Investments GP, LLC 028-25138
  • included managerBCLS Fund III Investments, LP 028-25140

The information table after summing rows of one CUSIP and put or call (H4), with the CUSIP and issuer name as filed. Values in dollars after the unit check (method).

Issuer as filedCUSIPClassAmountValueValue read asType
HEARTFLOW INC42238D107COM12,448,158$419,004,998dollars as filed
NEWAMSTERDAM PHARMA CO NVN62509109COMMON STOCK10,719,110$304,851,488dollars as filed
CIDARA THERAPEUTICS INC171757206COM NEW3,020,990$289,290,002dollars as filed
PHARVARIS NVN69605108COMMON STOCK3,181,275$79,372,811dollars as filed
OLEMA PHARMACEUTICALS INC68062P106COM6,843,954$67,002,310dollars as filed
SAVARA INC805111101COM17,600,621$62,834,217dollars as filed
DIANTHUS THERAPEUTICS INC252828108COM1,315,892$51,780,350dollars as filed
SOLID BIOSCIENCES INC83422E204COMMON STOCK7,911,669$48,814,998dollars as filed
UPSTREAM BIO INC91678A107COMMON STOCK2,439,538$45,887,710dollars as filed
RAPID MICRO BIOSYSTEMS INC75340L104CLASS A COM8,434,560$28,171,430dollars as filed
TANGO THERAPEUTICS INC87583X109COM2,712,008$22,780,867dollars as filed
CABALETTA BIO INC12674W109COMMON STOCK9,677,125$22,644,473dollars as filed
KYVERNA THERAPEUTICS INC501976104COMMON STOCK3,368,370$20,210,220dollars as filed
ANNEXON INC03589W102COM5,249,069$16,009,660dollars as filed
X4 PHARMACEUTICALS INC98420X202COMMON STOCK2,436,588$8,333,131dollars as filed
ATEA PHARMACEUTICALS INC04683R106COMMON STOCK2,485,638$7,208,350dollars as filed
Xilio Therapeutics Inc.98422T100COM4,566,817$3,848,457dollars as filed
MERSANA THERAPEUTICS INC59045L205COM346,545$2,689,189dollars as filed
C4 THERAPEUTICS INC12529R107COM STK1,111,910$2,468,440dollars as filed
CENTURY THERAPEUTICS INC15673T100COM3,538,609$1,762,227dollars as filed
NEWAMSTERDAM PHARMA CO NV-27N62509117WTS100,000$1,711,000dollars as filed

Amendment chain

FilingRoleFiledAcceptedIngested
13F-HR 0001193125-25-283094this filing2025-11-14acceptance time not in the bulk data set