RAPID MICRO BIOSYSTEMS, INC. — Director's Dealing 2025

Feb 20, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: RAPID MICRO BIOSYSTEMS, INC. (RPID)
CIK: 0001380106
Period of Report: 2025-02-18

Reporting Person: Spignesi Robert G. Jr. (Director, PRESIDENT AND CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-02-18	Class A Common Stock	A	365000	—	Acquired	883016	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-02-18	Stock Option (Right to Buy)	$3.90	A	290000	Acquired	2035-02-17	Class A Common Stock (290000)	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 18, 2025 (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 amount reported under Item 5. reflects a correction due to immaterial errors in previously reported withholding amounts.

F3: The option vests and becomes exercisable in 48 substantially equal monthly installments with the first installment vesting on March 18, 2025.