Rapid Micro Biosystems, Inc.

Historical 13F Holders

Symbol
RPID
CUSIP
75340L104
All holders as of
Q2 2026
Type
Equity
Class
CLASS A COM
Reported Value, Excluding Options
Total Filings

13D/G Filers

Investors who own more than 5% of a class must file a Schedule 13D or 13G. Each filer's latest filing for 75340L104 since 12/18/2024, largest first.

Filer % of Class Filed
Bain Capital Life Sciences Fund, L.P. 13G/A
16.8% 8/14/2026
Event 6/30/2026
Longitude Capital Partners II, LLC 13G/A
8.6% 5/15/2026
Event 3/31/2026
Armistice Capital, LLC 13G
7.3% 8/14/2026
Event 6/30/2026
Spignesi Robert G. Jr. 13D 6.3% 8/19/2025
Event 3/28/2024
Endeavour Medtech Growth II LP 13G/A
5.7% 2/13/2026
Event 12/31/2025

13F Holders by Quarter

Period Filings Shares, Excl. Options Value, Excl. Options
2026 Q3 7 132 k $136 k
2026 Q2 35 18.1 M $31.3 M
2026 Q1 47 16.4 M $37.3 M
2025 Q4 43 15.3 M $44.4 M
2025 Q3 31 15.5 M $51.7 M
2025 Q2 31 15.8 M $54.5 M
2025 Q1 30 16.0 M $42.1 M
2024 Q4 21 12.6 M $11.3 M
2024 Q3 22 18.5 M $16.5 M
2024 Q2 25 19.7 M $13.0 M
2024 Q1 28 20.3 M $19.5 M
2023 Q4 31 21.7 M $16.1 M
2023 Q3 25 22.1 M $23.9 M
2023 Q2 26 22.5 M $22.5 M
2023 Q1 33 23.5 M $35.4 M
2022 Q4 45 25.2 M $28.5 M
2022 Q3 55 26.3 M $84.9 M
2022 Q2 54 26.8 M $115 M
2022 Q1 62 27.4 M $186 M
2021 Q4 57 21.8 M $232 M
2021 Q3 50 21.8 M $401 M