    <SEC-DOCUMENT>0001380106-26-000058-index.html : 20260408
    <SEC-HEADER>0001380106-26-000058.hdr.sgml : 20260408
    <ACCEPTANCE-DATETIME>20260408163725
    ACCESSION NUMBER:		0001380106-26-000058
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		3
    FILED AS OF DATE:		20260408
    DATE AS OF CHANGE:		20260408

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			RAPID MICRO BIOSYSTEMS, INC.
    		CENTRAL INDEX KEY:			0001380106
    		STANDARD INDUSTRIAL CLASSIFICATION:	LABORATORY ANALYTICAL INSTRUMENTS [3826]
    		ORGANIZATION NAME:           	08 Industrial Applications and Services
    		EIN:				208121647
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEFA14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-40592
    		FILM NUMBER:		26848602

    	BUSINESS ADDRESS:
    		STREET 1:		25 HARTWELL AVENUE
    		CITY:			LEXINGTON
    		STATE:			MA
    		ZIP:			02421
    		BUSINESS PHONE:		978-349-3200

    	MAIL ADDRESS:
    		STREET 1:		25 HARTWELL AVENUE
    		CITY:			LEXINGTON
    		STATE:			MA
    		ZIP:			02421

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	RAPID MICRO BIOSYSTEMS INC
    		DATE OF NAME CHANGE:	20061103
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEFA14A
    <SEQUENCE>1
    <FILENAME>rpiddefa14a_2026.htm
    <DESCRIPTION>DEFA14A
    <TEXT>
    Document 1 - file: rpiddefa14a_2026.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>rapidmicrobiosystemsinc_vx.jpg
    <DESCRIPTION>NOTICE
    <TEXT>
    Document 2 - file: rapidmicrobiosystemsinc_vx.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>rapidmicrobiosystemsinc_vxa.jpg
    <DESCRIPTION>NOTICE
    <TEXT>
    Document 3 - file: rapidmicrobiosystemsinc_vxa.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>