Robert G. Spignesi Jr. - 10 Mar 2026 Form 4 Insider Report for RAPID MICRO BIOSYSTEMS, INC. (RPID)

Role
PRESIDENT AND CEO, Director
Signature
/s/ Sean M. Wirtjes, Attorney-in-Fact for Robert G. Spignesi, Jr.
Issuer symbol
RPID
Transactions as of
10 Mar 2026
Net transactions value
-$73,686
Form type
4
Filing time
12 Mar 2026, 19:52:23 UTC
Previous filing
20 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Spignesi Robert G. Jr. PRESIDENT AND CEO, Director C/O RAPID MICRO BIOSYSTEMS, INC., 25 HARTWELL AVENUE, LEXINGTON /s/ Sean M. Wirtjes, Attorney-in-Fact for Robert G. Spignesi, Jr. 12 Mar 2026 0001853904

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction RPID Class A Common Stock Sale $73,686 -17,922 -1.5% $4.11 1,169,848 10 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.