Rapid Micro Biosystems, INC Schedule 13G passive stakes

Filed when an investor crosses five percent without intending to seek control — the passive counterpart to a 13D.

NASDAQ
Armistice Capital, LLC and Steven Boyd have jointly reported beneficial ownership of 3,328,000 shares, representing 7.29% of Rapid Micro Biosystems, Inc.'s Class A common stock.
NASDAQ
Bain Capital Life Sciences Funds report a combined 18.48% ownership in Rapid Micro Biosystems, Inc. Class A Common Stock as of June 30, 2026.
NASDAQ
Longitude Capital Partners II, LLC and associated entities reported a beneficial ownership of 8.6% in Rapid Micro Biosystems, Inc. as of March 31, 2026.
NASDAQ
Endeavour Medtech Growth II LP and affiliates reported a 5.7% beneficial ownership stake in Rapid Micro Biosystems, Inc. as of December 31, 2025.