    <SEC-DOCUMENT>0001104659-21-085783-index.html : 20210625
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    ACCESSION NUMBER:		0001104659-21-085783
    CONFORMED SUBMISSION TYPE:	S-1
    PUBLIC DOCUMENT COUNT:		45
    FILED AS OF DATE:		20210625
    DATE AS OF CHANGE:		20210625

    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:			DE

    	FILING VALUES:
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    		SEC ACT:		1933 Act
    		SEC FILE NUMBER:	333-257431
    		FILM NUMBER:		211048664

    	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
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    <FILENAME>tm219739-8_s1.htm
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    <TEXT>
    Document 1 - file: tm219739-8_s1.htm

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    <TYPE>EX-3.1
    <SEQUENCE>2
    <FILENAME>tm219739d9_ex3-1.htm
    <DESCRIPTION>EXHIBIT 3.1
    <TEXT>
    Document 2 - file: tm219739d9_ex3-1.htm

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    <TYPE>EX-3.2
    <SEQUENCE>3
    <FILENAME>tm219739d9_ex3-2.htm
    <DESCRIPTION>EXHIBIT 3.2
    <TEXT>
    Document 3 - file: tm219739d9_ex3-2.htm

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    <DOCUMENT>
    <TYPE>EX-4.1
    <SEQUENCE>4
    <FILENAME>tm219739d9_ex4-1.htm
    <DESCRIPTION>EXHIBIT 4.1
    <TEXT>
    Document 4 - file: tm219739d9_ex4-1.htm

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    <TYPE>EX-4.2
    <SEQUENCE>5
    <FILENAME>tm219739d9_ex4-2.htm
    <DESCRIPTION>EXHIBIT 4.2
    <TEXT>
    Document 5 - file: tm219739d9_ex4-2.htm

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    <SEQUENCE>6
    <FILENAME>tm219739d9_ex4-3.htm
    <DESCRIPTION>EXHIBIT 4.3
    <TEXT>
    Document 6 - file: tm219739d9_ex4-3.htm

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    <TYPE>EX-4.4
    <SEQUENCE>7
    <FILENAME>tm219739d9_ex4-4.htm
    <DESCRIPTION>EXHIBIT 4.4
    <TEXT>
    Document 7 - file: tm219739d9_ex4-4.htm

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    <SEQUENCE>8
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    <DESCRIPTION>EXHIBIT 4.5
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    Document 8 - file: tm219739d9_ex4-5.htm

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    <SEQUENCE>9
    <FILENAME>tm2197392d9_ex10-1.htm
    <DESCRIPTION>EXHIBIT 10.1
    <TEXT>
    Document 9 - file: tm2197392d9_ex10-1.htm

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    <TYPE>EX-10.5
    <SEQUENCE>10
    <FILENAME>tm219739d9_ex10-5.htm
    <DESCRIPTION>EXHIBIT 10.5
    <TEXT>
    Document 10 - file: tm219739d9_ex10-5.htm

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    <SEQUENCE>11
    <FILENAME>tm219739d9_ex10-7.htm
    <DESCRIPTION>EXHIBIT 10.7
    <TEXT>
    Document 11 - file: tm219739d9_ex10-7.htm

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    <SEQUENCE>12
    <FILENAME>tm219739d9_ex10-8.htm
    <DESCRIPTION>EXHIBIT 10.8
    <TEXT>
    Document 12 - file: tm219739d9_ex10-8.htm

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    <SEQUENCE>13
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    <DESCRIPTION>EXHIBIT 10.14
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    Document 13 - file: tm219739d9_ex10-14.htm

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    <SEQUENCE>14
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    <DESCRIPTION>EXHIBIT 10.15
    <TEXT>
    Document 14 - file: tm219739d9_ex10-15.htm

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    <SEQUENCE>15
    <FILENAME>tm219739d9_ex21-1.htm
    <DESCRIPTION>EXHIBIT 21.1
    <TEXT>
    Document 15 - file: tm219739d9_ex21-1.htm

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    <SEQUENCE>16
    <FILENAME>tm219739d9_ex23-1.htm
    <DESCRIPTION>EXHIBIT 23.1
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    Document 16 - file: tm219739d9_ex23-1.htm

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    <SEQUENCE>17
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    <DESCRIPTION>EXHIBIT 23.3
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    Document 17 - file: tm219739d9_ex23-3.htm

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    Document 20 - file: tm219739d1-ph_dirsyste4clr.jpg

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    Document 21 - file: tm219739d1-ph_environ4clr.jpg

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    Document 26 - file: tm219739d3-bc_cellgen4clr.jpg

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    Document 28 - file: tm219739d5-lc_count4c.jpg

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    Document 29 - file: tm219739d5-ph_15step4c.jpg

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    Document 31 - file: tm219739d5-ph_coretam4c.jpg

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    Document 34 - file: tm219739d5-ph_lims4clr.jpg

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    Document 35 - file: tm219739d5-ph_steptradi4clr.jpg

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    Document 37 - file: tm219739d5-ph_visual4c.jpg

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    Document 38 - file: tm219739d9_ex4-3img001.jpg

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