Companies / Rapid Micro Biosystems, Inc.

Rapid Micro Biosystems, Inc.

Nasdaq: RPIDCIK 1380106LEXINGTON, MA

Financials · FY2025

Revenue$33.59M
Net income$-47.12M
Total debt$19.14M
Cash$14.69M
Diluted EPS$-1.05
Shares outstanding50.2M

Ownership

50.2M shares outstanding · as of Jul 31, 2026
5.0%Insiders
Ownership
91.0%Class A
Share classes
Class A91.03%
Class B8.97%
Insiders4.96%2,487,435
10%+ / strategic8.03%4,029,245
Institutions29.57%14,830,931
Public float57.44%28,811,945

% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.

Insiders 19

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Insider% of sharesShares
Longitude Capital Partners II, LLC10% owner
8.03%4,029,245
Spignesi Robert G. Jr.CEOPRESIDENT AND CEO · Director
2.37%1,190,571
Wirtjes Sean MCHIEF FINANCIAL OFFICER
1.13%568,981
Wilson John J. AddingtonCHIEF OPERATING OFFICER
0.63%316,762
Kollender Richard SDirector
0.26%130,318
Pei Melinda LitherlandDirector
0.20%100,687
Lowenstein IneseDirector
0.14%70,687
Malloy KirkDirector
0.12%60,687
Ricciardi Natale SDirector
0.06%29,442
Bika DafniDirector
0.04%19,300

Institutional holders 46

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HolderValue% of shares
Bain Capital Life Sciences Investors, LLC$24.46M16.82%
ABG-WTT Global Life Science Capital Partners GP Ltd$5.36M3.68%
Vanguard Group Inc$2.84M1.95%
Advent International, L.P.$1.25M1.10%
Parkman Healthcare Partners LLC$1.03M0.71%
Schonfeld Strategic Advisors LLC$1.02M0.70%
Millennium Management LLC$643.0K0.56%
Geode Capital Management, LLC$561.3K0.49%
Susquehanna International Group, LLP$499.5K0.34%
Evernest Financial Advisors, LLC$468.8K0.25%

Activity

Jun 30, 2026View all →
InsidersInstitutions
Who's accumulating and trimming this stock (13F).
DateActorActionSecurityValueShares ΔPosition afterImpact
Q1 2026
as of
Millennium Management LLC
13F manager
AddCommon stock$378.6K+167K
+143.15%
283,280
0.56% of shares
low
Q1 2026
as of
Marshall Wace, LLP
13F manager
TrimCommon stock$-108.2K-48K
-75.80%
15,224
0.03% of shares
low
Q4 2025
as of
Barclays PLC
13F manager
NewCommon stock$72.1K+25K
24,859
0.05% of shares
low
Q1 2026
as of
Geode Capital Management, LLC
13F manager
AddCommon stock$67.2K+30K
+13.61%
247,177
0.49% of shares
low
Q1 2026
as of
Advent International, L.P.
13F manager
TrimCommon stock$-57.7K-25K
-4.40%
552,377
1.10% of shares
low
Q2 2026
as of
BlackRock, Inc.
13F manager
AddCommon stock$57.4K+33K
+21.17%
189,832
0.38% of shares
low
Q1 2026
as of
Temasek Holdings (Private) Limited
13F manager
NewCommon stock$49.5K+22K
21,818
0.04% of shares
low
Q2 2026
as of
Temasek Holdings (Private) Limited
13F manager
ExitCommon stock$-49.5K-22K
-100.00%
0
low

5%+ ownership events

Schedule 13D / 13G
FilerStance% of classSharesDate
Endeavour Medtech Growth II LPPassive13G/A———
Longitude Capital Partners II, LLCPassive13G/A———

Securities

via CUSIP / OpenFIGI
SymbolTypeMarketCUSIPFIGI
RPID——75340L104—