Dafni Bika - 22 May 2025 Form 4 Insider Report for RAPID MICRO BIOSYSTEMS, INC. (RPID)

Role: Director
Signature: /s/ Sean Wirtjes, Attorney-in-Fact for Dafni Bika
Issuer symbol: RPID
Transactions as of: 22 May 2025
Net transactions value: $0
Form type: 4
Filing time: 27 May 2025, 20:31:14 UTC
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Bika Dafni	Director	C/O RAPID MICRO BIOSYSTEMS, INC., 25 HARTWELL AVENUE, LEXINGTON	/s/ Sean Wirtjes, Attorney-in-Fact for Dafni Bika	27 May 2025	0002070373

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	RPID	Stock Option (Right to Buy)	Award	$0	+50,000		$0.000000	50,000	22 May 2025	Class A Common Stock	50,000	$3.15	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	This option vests and becomes exercisable, subject to the Reporting Person's continued service on the Issuer's Board, in 36 substantially equal monthly installments with the first installment vesting on June 22, 2025.