X0609 4 2026-05-21 0 0001380106 RAPID MICRO BIOSYSTEMS, INC. RPID 0001326794 Malloy Kirk false C/O RAPID MICRO BIOSYSTEMS, INC. 25 HARTWELL AVENUE LEXINGTON MA 02421 1 0 0 0 0 Class A Common Stock 2026-05-21 4 A 0 19300 0 A 47900 D Class A Common Stock 10000 I By Trust Stock Option (Right to Buy) 2.07 2026-05-21 4 A 0 38700 0 A 2036-05-20 Class A Common Stock 38700 38700 D 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. Shares held in family trust as to which the Reporting Person shares investment power and the Reporting Person and/or immediate family members are beneficiaries. 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. /s/ Robert Spignesi, Attorney-in-Fact for Kirk Malloy 2026-05-26