SPIGNESI ROBERT G. JR.

PrivateCIK: 1853904
Location

LOWELL, MA

SPIGNESI ROBERT G. JR. (President and CEO) sold 1.5% of their position (17.92K shares) of RAPID MICRO BIOSYSTEMS, INC. on the open market

Open‑market sale worth $73.7K — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale
InsiderSPIGNESI ROBERT G. JR.CIK 1853904
DirectorOfficer· President and CEO
Since Jul 2021
-17.92K
Net shares
Net seller
$73.7K
Total sold
1
Open market trades
0B · 1S
1
Total transactions
17.92K disposed
Non-Derivative Transactions1

Class A Common Stock

Direct
S · Sale

Shares

17.92K

Price / share

$4.11

Trade value

$73.69K

% of position

1.5%
3/10/2026
1.19M1.17M
Total

Net shares

17.92K

Net value

-$73.69K

Derivative Transactions0
No derivative transactions reported
SPIGNESI ROBERT G. JR. — Insider Transaction (Form 4) Filed Mar 12, 2026 | Finecho