WIRTJES SEAN M

PrivateCIK: 1289733
Location

PALO ALTO, CA

WIRTJES SEAN M (Chief Financial Officer) sold 1.3% of their position (7.48K shares) of RAPID MICRO BIOSYSTEMS, INC. on the open market

Open‑market sale worth $32.3K — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale
InsiderWIRTJES SEAN MCIK 1289733
Officer· Chief Financial Officer
Since Jul 2021
-7.48K
Net shares
Net seller
$32.3K
Total sold
1
Open market trades
0B · 1S
1
Total transactions
7.48K disposed
Non-Derivative Transactions1

Class A Common Stock

Direct
S · Sale

Shares

7.48K

Price / share

$4.32

Trade value

$32.30K

% of position

1.3%
3/11/2026
563.67K556.19K
Total

Net shares

7.48K

Net value

-$32.30K

Derivative Transactions0
No derivative transactions reported
WIRTJES SEAN M — Insider Transaction (Form 4) Filed Mar 12, 2026 | Finecho