Rapid Micro Biosystems, Inc.
RPIDAs of the close on Sep 25, 2026
Price
$1.11
Market cap
$50.7M
P/E (diluted TTM)
—
Not meaningful: the last four quarters were a loss
EPS (TTM)
−$1.10
Four quarters to Jun 30, 2026
Dividend yield
—
Dividend records do not yet cover the latest payments
Figures shown here come from public SEC filings. Dates beside each section show the available history.
How Rapid Micro Biosystems, Inc. Makes Money
Follow each dollar of revenue through to what shareholders keep.
From revenue to net income
Pick a year or quarter. Each band's width is its dollar amount.
Financial Summary
Choose a year or quarter, compare it with the same period a year earlier, and open any row for its full filing history.
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SEC filings supply these figures; updates after the dates shown are not included. This page includes 6 annual periods. The latest annual period ends Dec 31, 2025. The latest insider filing shown is dated Jun 2, 2026. The latest institutional report shown is dated Mar 31, 2026; other ownership filings may exist.
Ownership
Who holds the shares, as reported in SEC ownership filings.
Reported 13F positions
Each row shows what a filer reported for one date, not a current position. The link opens that filing.
| Filer | Report date | Shares | Value | Filing |
|---|---|---|---|---|
| MILLENNIUM MANAGEMENT LLC | 2026-03-31 | 283,280 | Not shown | SEC filing |
| ESSEX INVESTMENT MANAGEMENT CO LLC | 2026-03-31 | 883,931 | Not shown | SEC filing |
| Larson Financial Group LLC | 2026-03-31 | 5,491 | Not shown | SEC filing |
| Advent International, L.P. | 2026-03-31 | 552,377 | Not shown | SEC filing |
| RENAISSANCE TECHNOLOGIES LLC | 2026-03-31 | 126,617 | Not shown | SEC filing |
| Bain Capital Life Sciences Investors, LLC | 2026-03-31 | 8,434,560 | Not shown | SEC filing |
| ABG-WTT Global Life Science Capital Partners GP Ltd | 2026-03-31 | 1,848,296 | Not shown | SEC filing |
| BNP PARIBAS FINANCIAL MARKETS | 2026-03-31 | 9,327 | Not shown | SEC filing |
| BANCO BILBAO VIZCAYA ARGENTARIA, S.A. | 2026-03-31 | 12,691 | Not shown | SEC filing |
| OSAIC HOLDINGS, INC. | 2026-03-31 | 14,000 | Not shown | SEC filing |
| CWM, LLC | 2026-03-31 | 188 | Not shown | SEC filing |
| BANK OF AMERICA CORP /DE/ | 2026-03-31 | 31,014 | Not shown | SEC filing |
| GOLDMAN SACHS GROUP INC | 2026-03-31 | 71,912 | Not shown | SEC filing |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 2026-03-31 | 212,114 | Not shown | SEC filing |
| SBI Securities Co., Ltd. | 2026-03-31 | 15 | Not shown | SEC filing |
| ALGERT GLOBAL LLC | 2026-03-31 | 23,181 | Not shown | SEC filing |
| Evernest Financial Advisors, LLC | 2026-03-31 | 432,510 | Not shown | SEC filing |
| BlackRock, Inc. | 2026-03-31 | 157,232 | Not shown | SEC filing |
| GEODE CAPITAL MANAGEMENT, LLC | 2026-03-31 | 247,177 | Not shown | SEC filing |
| JPMORGAN CHASE & CO | 2026-03-31 | 109 | Not shown | SEC filing |
- Each value is checked against Rapid Micro Biosystems, Inc.'s share prices from within about three months of its report date (insiders' Form 4 trades and the latest close).
- Value not shown for 20 rows: the value per share could not be confirmed against the share prices on file from within three months of the report date.
Filer report history
Two reports per filer, as filed. No change is calculated, because the data on file cannot confirm that both reports describe the same security.
- RESOURCES MANAGEMENT CORP /CT/ /ADV: 500 shares reported 2025-12-31; 500 shares reported 2026-03-31.
- Legato Capital Management LLC: 14,684 shares reported 2025-12-31; 274,924 shares reported 2026-03-31.
- Qube Research & Technologies Ltd: 33,099 shares reported 2025-12-31; 15,410 shares reported 2026-03-31.
- AMERICAN CENTURY COMPANIES INC: 16,922 shares reported 2025-12-31; 16,922 shares reported 2026-03-31.
- JANE STREET GROUP, LLC: 105,301 shares reported 2025-12-31; 132,925 shares reported 2026-03-31.
- NANO CAP NEW MILLENNIUM GROWTH FUND L P: 25,000 shares reported 2025-12-31; 12,500 shares reported 2026-03-31.
- FIFTH LANE CAPITAL, LP: 17,700 shares reported 2025-12-31; 71,000 shares reported 2026-03-31.
- SEI INVESTMENTS CO: 93,616 shares reported 2025-12-31; 284,816 shares reported 2026-03-31.
- 683 Capital Management, LLC: 120,773 shares reported 2025-12-31; 120,773 shares reported 2026-03-31.
- STATE STREET CORP: 91,474 shares reported 2025-12-31; 93,874 shares reported 2026-03-31.
- BARCLAYS PLC: 24,859 shares reported 2025-12-31; 21,595 shares reported 2026-03-31.
- UBS Group AG: 41 shares reported 2025-12-31; 11,252 shares reported 2026-03-31.
Showing the 12 most recent filer reports.
13 filers have only one report here.
Unusually large insider trades
Each trade is compared with the other insider trades of the same kind in the same security among Rapid Micro Biosystems, Inc.'s recent filings on file. Size alone is context, not a prediction or evidence of improper trading.
- 2026-02-04 · ENRIGHT PATRICK G: Larger than all 18 other insider sales of Class A Common Stock on file. SEC filing
- 2026-01-30 · ENRIGHT PATRICK G: Larger than 17 of the 18 other insider sales of Class A Common Stock on file. SEC filing
- 2024-08-06 · Kollender Richard S: Larger than 20 of the 22 other insider purchases of Class A Common Stock on file. SEC filing
- 2022-06-03 · Richman Darren: Larger than 16 of the 17 other insider purchases of Common Stock on file. SEC filing
- 2022-05-17 · Richman Darren: Larger than all 17 other insider purchases of Common Stock on file. SEC filing
- 2021-07-19 · ENRIGHT PATRICK G: Larger than all 22 other insider purchases of Class A Common Stock on file. SEC filing
- 2021-07-19 · Schwartz Jeffrey Lawrence: Larger than 21 of the 22 other insider purchases of Class A Common Stock on file. SEC filing
Independent insiders buying near the same time
- 2024-08-06–2024-08-08: 4 event(s) across 4 owner(s) — A cluster counts independent reporting owners that reported purchases within a set time. Co-filers and declared affiliates count once, and duplicate reports of the same event count once. ( filing , filing , filing , filing )
- 2021-07-19–2021-07-19: 2 event(s) across 2 owner(s) — A cluster counts independent reporting owners that reported purchases within a set time. Co-filers and declared affiliates count once, and duplicate reports of the same event count once. ( filing , filing )
Purchases & sales (open market or private)
| Security | Code | Price | Filing | |||
|---|---|---|---|---|---|---|
| 2026-05-20 | Bain Capital Life Sciences Fund, L.P. · 10% owner | Series B Warrant (right to buy) | P — Open market or private purchase | +1,463,000 | unknown | SEC filing |
| 2026-05-20 | Bain Capital Life Sciences Fund, L.P. · 10% owner | Series A Warrant (right to buy) | P — Open market or private purchase | +1,463,000 | unknown | SEC filing |
| 2026-05-20 | Bain Capital Life Sciences Fund, L.P. · 10% owner | Pre-Funded Warrant (right to buy) | P — Open market or private purchase | +1,463,000 | unknown | SEC filing |
| 2026-03-11 | WIRTJES SEAN M · CHIEF FINANCIAL OFFICER | Class A Common Stock | S — Open market or private sale | −7,480 | 4.32 | SEC filing |
| 2026-03-11 | Wilson John J. Addington · CHIEF OPERATING OFFICER | Class A Common Stock | S — Open market or private sale | −9,603 | 4.32 | SEC filing |
| 2026-03-10 | Spignesi Robert G. Jr. · PRESIDENT AND CEO | Class A Common Stock | S — Open market or private sale | −17,922 | 4.11 | SEC filing |
| 2026-02-20 | Wilson John J. Addington · CHIEF OPERATING OFFICER | Class A Common Stock | S — Open market or private sale | −5,403 | 3.92 | SEC filing |
| 2026-02-20 | WIRTJES SEAN M · CHIEF FINANCIAL OFFICER | Class A Common Stock | S — Open market or private sale | −17,254 | 3.92 | SEC filing |
Showing 8 of 20 rows
Grants, exercises, tax & gifts
| Security | Code | Filing | |||
|---|---|---|---|---|---|
| 2026-05-29 | Malloy Kirk · Director | Series A Warrant (right to buy) | A — Grant, award, or other acquisition | +12,787 | SEC filing |
| 2026-05-29 | WIRTJES SEAN M · CHIEF FINANCIAL OFFICER | Series A Warrant (right to buy) | A — Grant, award, or other acquisition | +12,787 | SEC filing |
| 2026-05-29 | WIRTJES SEAN M · CHIEF FINANCIAL OFFICER | Series B Warrant (right to buy) | A — Grant, award, or other acquisition | +12,787 | SEC filing |
| 2026-05-29 | Spignesi Robert G. Jr. · PRESIDENT AND CEO | Series A Warrant (right to buy) | A — Grant, award, or other acquisition | +12,787 | SEC filing |
| 2026-05-29 | Spignesi Robert G. Jr. · PRESIDENT AND CEO | Class A Common Stock | A — Grant, award, or other acquisition | +12,787 | SEC filing |
| 2026-05-29 | PEI MELINDA LITHERLAND · Director | Class A Common Stock | A — Grant, award, or other acquisition | +12,787 | SEC filing |
| 2026-05-29 | Malloy Kirk · Director | Series B Warrant (right to buy) | A — Grant, award, or other acquisition | +12,787 | SEC filing |
| 2026-05-29 | Malloy Kirk · Director | Class A Common Stock | A — Grant, award, or other acquisition | +12,787 | SEC filing |
Showing 8 of 31 rows
These tables describe filed transactions, not current holdings. Prices are shown as filed; a currency is added only when the filing's data names one. Amended and possible duplicate rows are left out of size comparisons and transaction groups.