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

May 28, 2024

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: RAPID MICRO BIOSYSTEMS, INC. (RPID)
CIK: 0001380106
Period of Report: 2024-05-23

Reporting Person: Schwartz Jeffrey Lawrence (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2024-05-23	Class A Common Stock	A	14300	$0.00	Acquired	14300	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2024-05-23	Stock Option (Right to Buy)	$0.82	A	28650	Acquired	2034-05-22	Class A Common Stock (28650)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Class A Common Stock	8434560	Indirect

Footnotes

F1: Grant of restricted stock units ("RSUs") that vests in full on the earlier of (i) the first anniversary of the grant date or (ii) the day immediately prior to the date of the next annual meeting of the stockholders of the Company, provided that the reporting person remains in continuous service on such vesting date.

F2: The option shall vest and become exercisable in full on the earlier of (i) the first anniversary of the grant date or (ii) the day immediately prior to the date of the next annual meeting of the stockholders of the Company, provided that the reporting person remains in continuous service on such vesting date.

F3: Represents shares of Class A Common Stock held directly by Bain Capital Life Sciences Fund, L.P. ("BCLS Fund I") and BCIP Life Sciences Associates, LP ("BCIPLS" and, together with BCLS Fund I, the "Bain Capital Life Sciences Entities").

F4: Bain Capital Life Sciences Investors, LLC ("BCLSI") is the ultimate general partner of BCLS Fund I and governs the investment strategy and decision-making process with respect to investments held by BCIPLS. Mr. Schwartz is a Partner of BCLSI. By virtue of the relationships described in this footnote, Mr. Schwartz may be deemed to share voting and dispositive power with respect to the securities held by the Bain Capital Life Sciences Entities. Mr. Schwartz disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein.