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RPIDNasdaq
RAPID MICRO BIOSYSTEMS, INC.
Laboratory Analytical Instruments · DE · CIK 1380106
Rapid Micro Biosystems, Inc. sells and delivers Growth Direct systems, consumables, and service contracts for microbial detection
$88M
Market cap
$1.73
Last close
+1.8%
1D
+1.8%
5D
177K
Volume
Price · last 39 sessions-30.5%
May 4L $1.66 · H $2.63Jun 29
92
Total filings
May 28, 2026
Last filing
12/31
Fiscal year end
8-KShareholder VoteMay 28, 20268-KMaterial AgreementMay 19, 2026424B5424B5May 19, 2026424B5424B5May 19, 202610-Q10-QMay 15, 20268-KResults of OperationsMay 13, 2026DEFA14ADEFA14AApr 8, 2026DEF 14ADEF 14AApr 8, 20268-KExecutive ChangeMar 27, 202610-K10-KMar 12, 20268-KResults of Operations · Reg FD DisclosureMar 12, 20268-KResults of OperationsJan 13, 202610-Q10-QNov 7, 20258-KResults of OperationsNov 7, 202510-Q10-QAug 12, 20258-KMaterial Agreement · Results of OperationsAug 12, 20258-KCompany UpdateJun 17, 20258-KExecutive Change · Shareholder VoteMay 23, 202510-Q10-QMay 9, 20258-KResults of OperationsMay 9, 2025DEFA14ADEFA14AApr 8, 2025DEF 14ADEF 14AApr 8, 20258-KReg FD DisclosureMar 4, 202510-K10-KFeb 28, 20258-KResults of OperationsFeb 28, 20258-KMaterial Agreement · Reg FD DisclosureFeb 27, 20258-KReg FD DisclosureJan 16, 20258-KResults of OperationsJan 14, 20258-KCompany UpdateNov 12, 202410-Q10-QNov 7, 20248-KExecutive Change · Results of OperationsNov 1, 202410-Q10-QAug 2, 20248-KDelisting Notice · Results of OperationsAug 2, 20248-KBylaw Amendment · Shareholder VoteMay 24, 202410-Q10-QMay 3, 20248-KResults of OperationsMay 3, 2024DEFA14ADEFA14AApr 9, 2024DEF 14ADEF 14AApr 9, 202410-K10-KMar 1, 20248-KResults of OperationsMar 1, 20248-KDelisting NoticeFeb 2, 20248-KResults of Operations · Company UpdateJan 10, 202410-Q10-QNov 3, 20238-KResults of OperationsNov 3, 20238-KCompany UpdateSep 26, 20238-KDelisting NoticeSep 19, 202310-Q10-QAug 4, 20238-KResults of OperationsAug 4, 20238-KExecutive Change · Reg FD DisclosureJul 18, 202310-K/A10-K/AMay 15, 202310-Q10-QMay 9, 20238-KShareholder VoteMay 8, 20238-KResults of OperationsMay 5, 2023DEFA14ADEFA14AMar 21, 2023DEF 14ADEF 14AMar 21, 202310-K10-KMar 10, 20238-KResults of OperationsMar 3, 2023SC 13GSC 13GFeb 14, 20238-KResults of OperationsJan 11, 20238-KReg FD Disclosure · Company UpdateDec 1, 202210-Q10-QNov 10, 20228-KResults of OperationsNov 10, 202210-Q10-QAug 12, 20228-KExecutive Change · Material AgreementAug 12, 2022SC 13DSC 13DJun 30, 20228-KShareholder VoteMay 26, 202210-Q10-QMay 10, 20228-KResults of OperationsMay 10, 2022DEFA14AFORM DEFA14AApr 8, 2022DEF 14AFORM DEF 14AApr 8, 20228-KExecutive ChangeMar 29, 202210-K10-KMar 24, 2022SC 13GSC 13GMar 16, 20228-KResults of OperationsMar 4, 2022SC 13GSC 13GFeb 15, 2022SC 13GSC 13GFeb 14, 2022SC 13GRAPID MICRO BIOSYSTEMS, INC.Feb 14, 2022SC 13GSC 13GFeb 14, 2022SC 13GSC 13GFeb 11, 2022SC 13GFILING RAPID MICRO BIOSYSTEMS, INC.Jan 26, 2022
Insider Activity
In the 90 days to Mar 11, 2026: 5 sold $1.1M.
| Date | Insider | Action | Shares | Price | Value |
|---|---|---|---|---|---|
| Mar 11, 2026 | Wilson John J. AddingtonCHIEF OPERATING OFFICER | Sell | 9,603 | $4.32 | $41K |
| Mar 11, 2026 | Wirtjes Sean MCHIEF FINANCIAL OFFICER | Sell | 7,480 | $4.32 | $32K |
| Mar 10, 2026 | Spignesi Robert G. Jr.PRESIDENT AND CEO | Sell | 17,922 | $4.11 | $74K |
| Feb 20, 2026 | Wirtjes Sean MCHIEF FINANCIAL OFFICER | Sell | 17,254 | $3.92 | $68K |
| Feb 20, 2026 | Wilson John J. AddingtonCHIEF OPERATING OFFICER | Sell | 5,403 | $3.92 | $21K |
| Feb 19, 2026 | Spignesi Robert G. Jr.PRESIDENT AND CEO | Sell | 38,327 | $3.89 | $149K |
| Feb 9, 2026 | Spignesi Robert G. Jr.PRESIDENT AND CEO | Sell | 12,840 | $3.78 | $49K |
| Feb 9, 2026 | Wirtjes Sean MCHIEF FINANCIAL OFFICER | Sell | 6,027 | $3.78 | $23K |
| Feb 9, 2026 | Wilson John J. AddingtonCHIEF OPERATING OFFICER | Sell | 4,610 | $3.78 | $17K |
| Feb 4, 2026 | Longitude Venture Partners Ii, L.P.TenPercentOwner | Sell | 49,000 | $3.88 | $190K |
| Feb 3, 2026 | Longitude Prime Partners, LlcTenPercentOwner | Sell | 27,500 | $4.24 | $117K |
| Feb 2, 2026 | Longitude Prime Partners, LlcTenPercentOwner | Sell | 27,500 | $4.25 | $117K |
| Jan 30, 2026 | Longitude Prime Partners, LlcTenPercentOwner | Sell | 46,000 | $4.54 | $209K |
| Jan 23, 2026 | Longitude Prime Partners, LlcTenPercentOwner | Sell | 7,739 | $4.06 | $31K |
Open-market buys & sells (Form 4, transaction codes P/S). Source: SEC structured insider data.
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