14 insiders reported 81 Form 4 transactions for RAPID MICRO BIOSYSTEMS, INC. (RPID) over the past 18 months (most recent 2026-06-02). Recent activity: Malloy Kirk (Director) Buy 12,787 shares, WIRTJES SEAN M (CHIEF FINANCIAL OFFICER) Buy 12,787 shares, PEI MELINDA LITHERLAND (Director) Buy 12,787 shares, Spignesi Robert G. Jr. (PRESIDENT AND CEO) Buy 12,787 shares, LOWENSTEIN INESE (Director) Buy 12,787 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-02 | Malloy Kirk | Director | Buy | 12,787 | $24,999 |
| 2026-06-02 | WIRTJES SEAN M | CHIEF FINANCIAL OFFICER | Buy | 12,787 | $24,999 |
| 2026-06-02 | PEI MELINDA LITHERLAND | Director | Buy | 12,787 | $24,999 |
| 2026-06-02 | Spignesi Robert G. Jr. | PRESIDENT AND CEO | Buy | 12,787 | $24,999 |
| 2026-06-02 | LOWENSTEIN INESE | Director | Buy | 12,787 | $24,999 |
| 2026-03-12 | WIRTJES SEAN M | CHIEF FINANCIAL OFFICER | Sell | 7,480 | $32,314 |
| 2026-03-12 | Wilson John J. Addington | CHIEF OPERATING OFFICER | Sell | 9,603 | $41,485 |
| 2026-03-12 | Spignesi Robert G. Jr. | PRESIDENT AND CEO | Sell | 17,922 | $73,659 |
| 2026-03-02 | RICCIARDI NATALE S | Director | Buy | 842 | $632 |
| 2026-02-20 | Wilson John J. Addington | CHIEF OPERATING OFFICER | Sell | 5,403 | $21,180 |
| 2026-02-20 | Spignesi Robert G. Jr. | PRESIDENT AND CEO | Sell | 38,327 | $149,092 |
| 2026-02-20 | WIRTJES SEAN M | CHIEF FINANCIAL OFFICER | Sell | 17,254 | $67,636 |
| 2026-02-13 | WIRTJES SEAN M | CHIEF FINANCIAL OFFICER | Buy | 97,000 | $0 |
| 2026-02-13 | Wilson John J. Addington | CHIEF OPERATING OFFICER | Buy | 74,000 | $0 |
| 2026-02-13 | Spignesi Robert G. Jr. | PRESIDENT AND CEO | Buy | 264,000 | $0 |
| 2026-02-10 | Spignesi Robert G. Jr. | PRESIDENT AND CEO | Sell | 12,840 | $48,535 |
| 2026-02-10 | WIRTJES SEAN M | CHIEF FINANCIAL OFFICER | Sell | 6,027 | $22,782 |
| 2026-02-10 | Wilson John J. Addington | CHIEF OPERATING OFFICER | Sell | 4,610 | $17,426 |
| 2026-02-06 | Longitude Prime Fund, L.P. | Insider | Sell | 49,000 | $190,120 |
| 2026-02-06 | Longitude Prime Partners, LLC | Insider | Sell | 49,000 | $190,120 |
| 2026-02-06 | Longitude Capital Partners II, LLC | Insider | Sell | 49,000 | $190,120 |
| 2026-02-06 | Longitude Venture Partners II, L.P. | Insider | Sell | 49,000 | $190,120 |
| 2026-02-06 | Tammenoms Bakker Juliet | Insider | Sell | 49,000 | $190,120 |
| 2026-02-06 | ENRIGHT PATRICK G | Insider | Sell | 49,000 | $190,120 |
| 2026-02-03 | Longitude Capital Partners II, LLC | Insider | Buy | 629,032 | $31,452 |
Source: SEC Form 4 filings · as of 2026-06-02