RAPID MICRO BIOSYSTEMS, INC. — Director's Dealing 2024

Feb 8, 2024

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: RAPID MICRO BIOSYSTEMS, INC. (RPID)
CIK: 0001380106
Period of Report: 2024-02-06

Reporting Person: WIRTJES SEAN M (CHIEF FINANCIAL OFFICER)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2024-02-06	Class A Common Stock	A	51000	—	Acquired	336651	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2024-02-06	Stock Option (Right to Buy)	$0.942	A	103000	Acquired	2034-02-05	Class A Common Stock (103000)	Direct

Footnotes

F1: Grant of restricted stock units ("RSUs") that vest in three annual installments with 33.4% vesting on the first anniversary of February 6, 2024 (the "grant date") and 33.3% vesting on each of the second and third
anniversaries of the grant date provided that the Reporting Person remains in continuous service on each vesting date.

F2: The option vests and becomes exercisable in 48 substantially equal monthly installments with the first installment vesting on March 6, 2024.