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RPID

Rapid Micro Biosystems, Inc.

NASDAQ · Healthcare · Medical - Devices · US

$1.31
−5.07%
Ask drillr
0
Insider buys (3m)
0
Insider sells (3m)
$0.00
Net value (3m)
-32.4%
Price return (3m)
Form 4 filings
DateInsiderActivitySharesPrice
Jul 24, 2026Kollender Richard S · directorM-Exempt1,681$0.75
Jul 24, 2026Kollender Richard S · directorM-Exempt1,827$0.75
Jul 24, 2026Spignesi Robert G. Jr. · director, officer: PRESIDENT AND CEOM-Exempt1,402$0.75
Jun 2, 2026Spignesi Robert G. Jr. · director, officer: PRESIDENT AND CEOA-Award12,787$1.96
Jun 2, 2026LOWENSTEIN INESE · directorA-Award12,787$1.96
Jun 2, 2026PEI MELINDA LITHERLAND · directorA-Award12,787$1.96
Jun 2, 2026Malloy Kirk · directorA-Award12,787$1.96
Jun 2, 2026WIRTJES SEAN M · officer: CHIEF FINANCIAL OFFICERA-Award12,787$1.96
May 26, 2026LOWENSTEIN INESE · directorA-Award38,700$2.07
May 26, 2026PEI MELINDA LITHERLAND · directorA-Award38,700$2.07
May 26, 2026Kollender Richard S · directorA-Award19,300$0.00
May 26, 2026Kollender Richard S · directorA-Award38,700$2.07
May 26, 2026Bika Dafni · directorA-Award19,300$0.00
May 26, 2026Bika Dafni · directorA-Award38,700$2.07
May 26, 2026PEI MELINDA LITHERLAND · directorA-Award19,300$0.00
May 26, 2026Malloy Kirk · directorA-Award38,700$2.07
May 26, 2026Malloy Kirk · directorA-Award19,300$0.00
May 26, 2026LOWENSTEIN INESE · directorA-Award19,300$0.00
May 22, 2026Bain Capital Life Sciences Investors, LLC · 10 percent ownerPurchase1,463,000$0.01
Mar 12, 2026Wilson John J. Addington · officer: CHIEF OPERATING OFFICERSale9,603$4.32
Mar 12, 2026Spignesi Robert G. Jr. · director, officer: PRESIDENT AND CEOSale17,922$4.11
Mar 12, 2026WIRTJES SEAN M · officer: CHIEF FINANCIAL OFFICERSale7,480$4.32
Mar 2, 2026RICCIARDI NATALE S · directorM-Exempt842$0.75
Feb 20, 2026Spignesi Robert G. Jr. · director, officer: PRESIDENT AND CEOSale38,327$3.89
Feb 20, 2026WIRTJES SEAN M · officer: CHIEF FINANCIAL OFFICERSale17,254$3.92
Feb 20, 2026Wilson John J. Addington · officer: CHIEF OPERATING OFFICERSale5,403$3.92
Feb 13, 2026Wilson John J. Addington · officer: CHIEF OPERATING OFFICERA-Award74,000$0.00
Feb 13, 2026Spignesi Robert G. Jr. · director, officer: PRESIDENT AND CEOA-Award528,000$4.20
Feb 13, 2026Spignesi Robert G. Jr. · director, officer: PRESIDENT AND CEOA-Award264,000$0.00
Feb 13, 2026Wilson John J. Addington · officer: CHIEF OPERATING OFFICERA-Award147,000$4.20
Institutional positioning

13F filings over the trailing two quarters

New 15Increased 16Reduced 10Sold out 45
FilerActionSharesFiled
BAIN CAPITAL LIFE SCIENCES INVESTORS, LLCUnchanged8,434,560May 15, 2026
ABG-WTT GLOBAL LIFE SCIENCE CAPITAL PARTNERS GP LTDUnchanged1,848,296May 18, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position982,494May 15, 2026
ESSEX INVESTMENT MANAGEMENT CO LLCIncreased883,931May 11, 2026
ADVENT INTERNATIONAL CORP/MAReduced552,377May 15, 2026
EVERNEST FINANCIAL ADVISORS, LLCIncreased432,510May 4, 2026
SEI INVESTMENTS COIncreased284,816May 13, 2026
MILLENNIUM MANAGEMENT LLCIncreased283,280May 15, 2026
LEGATO CAPITAL MANAGEMENT LLCIncreased274,924May 14, 2026
GEODE CAPITAL MANAGEMENT, LLCIncreased247,177May 15, 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLPIncreased212,114May 15, 2026
BLACKROCK, INC.Increased157,232May 13, 2026
JANE STREET GROUP, LLCIncreased132,925May 12, 2026
RENAISSANCE TECHNOLOGIES LLCIncreased126,617May 14, 2026
683 CAPITAL MANAGEMENT, LLCUnchanged120,773May 15, 2026

Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Jul 24, 2026