# EDGAR Filing Document

**Accession Number:** 0001380106
**File Stem:** 0001380106-23-000043
**Filing Date:** 2023-3
**Character Count:** 2330
**Document Hash:** 23f0af4e2d3a20af2ded248a67fd88d7
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001380106-23-000043.hdr.sgml**: 20230321

**ACCESSION NUMBER**: 0001380106-23-000043

**CONFORMED SUBMISSION TYPE**: DEFA14A

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20230321

**DATE AS OF CHANGE**: 20230321

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** RAPID MICRO BIOSYSTEMS, INC.
- **CENTRAL INDEX KEY:** 0001380106
- **STANDARD INDUSTRIAL CLASSIFICATION:** LABORATORY ANALYTICAL INSTRUMENTS [3826]
- **IRS NUMBER:** 000000000
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** DEFA14A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-40592
- **FILM NUMBER:** 23750443

**BUSINESS ADDRESS:**
- **STREET 1:** 1001 PAWTUCKET BLVD.
- **CITY:** LOWELL
- **STATE:** MA
- **ZIP:** 01854
- **BUSINESS PHONE:** 978-349-3200

**MAIL ADDRESS:**
- **STREET 1:** 1001 PAWTUCKET BLVD.
- **CITY:** LOWELL
- **STATE:** MA
- **ZIP:** 01854

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** RAPID MICRO BIOSYSTEMS INC
- **DATE OF NAME CHANGE:** 20061103

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, DC 20549**

**SCHEDULE 14A**

**Proxy Statement Pursuant to Section 14(a) of**

**the Securities Exchange Act of 1934 (Amendment No.)**

Filed by the Registrant ⌧ Filed by a Party other than the Registrant □

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| | |
|:---|:---|
| Check the appropriate box: | Check the appropriate box: |
| □ | Preliminary Proxy Statement |
| □ | **Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))** |
| □ | Definitive Proxy Statement |
| ⌧ | Definitive Additional Materials |
| □ | Soliciting Material under §240.14a-12 |

---

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| |
|:---|
| **Rapid Micro Biosystems, Inc.** |
| **(Name of Registrant as Specified in its Charter)** |
| **(Name of Person(s) Filing Proxy Statement, if Other Than the Registrant)** |

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| | |
|:---|:---|
| Payment of Filing Fee (Check all boxes that apply): | Payment of Filing Fee (Check all boxes that apply): |
| ⌧ | No fee required. |
| □ | Fee paid previously with preliminary materials. |
| □ | Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11. |

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![rpid_noticex2023x1.jpg](rpid_noticex2023x1.jpg)

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![rpid_noticex2023x2.jpg](rpid_noticex2023x2.jpg)

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