DOSSIER · 13F Holders · Q3 2026
RPID

RAPID MICRO BIOSYSTEMS INC

38 institutions still hold RAPID MICRO BIOSYSTEMS INC as of Q3 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 75340L104·38 13F holders·last filed Jun 30, 2026
Market cap
—
13F value held
$29M
visible holders
Holders
38
filers reporting
Concentration
49.53%
Bain Capital Life Sciences Investors, LLC #1
top holder share
AI Holders Summary · Q3 2026

38 institutions reported RPID in Q3 2026. Bain Capital Life Sciences Investors, LLC leads at 49.5% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
Bain Capital Life Sciences Investors, LLC
CIK 0001703031
$15M8.4M0.87%Q2 2026
02
ARMISTICE CAPITAL, LLC
CIK 0001601086
$6M3.3M0.07%Q2 2026
03
ABG-WTT Global Life Science Capital Partners GP Ltd
CIK 0001832108
$3M1.8M37.39%Q2 2026
04
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$982K954K0.00%Q3 2026
05
KHAZANAH NASIONAL BERHAD
CIK 0001763068
$981K567K0.06%Q2 2026
06
Evernest Financial Advisors, LLC
CIK 0002009530
$875K506K0.18%Q2 2026
07
ADVENT INTERNATIONAL, L.P.
CIK 0001034196
$657K380K0.00%Q2 2026
08
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$409K237K0.00%Q2 2026
09
683 Capital Management, LLC
CIK 0001404574
$350K121K0.02%Q4 2025
10
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$254K246K0.00%Q3 2026
11
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
$247K240K0.00%Q3 2026
12
BlackRock, Inc.
CIK 0002012383
$203K197K0.00%Q3 2026
13
VANGUARD FIDUCIARY TRUST CO
CIK 0000933478· Index
$190K185K0.00%Q3 2026
14
XTX Topco Ltd
CIK 0001828301
$138K80K0.00%Q2 2026
15
STATE STREET CORP
CIK 0000093751
$97K94K0.00%Q3 2026
16
NORTHERN TRUST CORP
CIK 0000073124· Index
$73K42K0.00%Q2 2026
17
ALGERT GLOBAL LLC
CIK 0001275218
$66K38K0.00%Q2 2026
18
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$66K64K0.00%Q3 2026
19
Squarepoint Ops LLC
CIK 0001642575
$60K58K0.00%Q3 2026
20
ACADIAN ASSET MANAGEMENT LLC
CIK 0000916542
$60K60K0.00%Q3 2026
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Insiders at RAPID MICRO BIOSYSTEMS INC
Kollender Richard S →Spignesi Robert G. Jr. →Wirtjes Sean M →Malloy Kirk →Pei Melinda Litherland →Lowenstein Inese →Bika Dafni →Wilson John J. Addington →