Sean M. Wirtjes - 11 Mar 2026 Form 4 Insider Report for RAPID MICRO BIOSYSTEMS, INC. (RPID)

Role
CHIEF FINANCIAL OFFICER
Signature
/s/ Sean M. Wirtjes
Issuer symbol
RPID
Transactions as of
11 Mar 2026
Net transactions value
-$32,299
Form type
4
Filing time
12 Mar 2026, 19:52:55 UTC
Previous filing
20 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
WIRTJES SEAN M CHIEF FINANCIAL OFFICER C/O RAPID MICRO BIOSYSTEMS, INC., 25 HARTWELL AVENUE, LEXINGTON /s/ Sean M. Wirtjes 12 Mar 2026 0001289733

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction RPID Class A Common Stock Sale $32,299 -7,480 -1.3% $4.32 556,194 11 Mar 2026 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Represents the automatic sale of stock to cover the associated tax obligations with the vesting of restricted stock units.