Form 4 Tracker
RAPID MICRO BIOSYSTEMS, INC.
RPID

26 insider filings · Latest: May 29, 2026

Common Stock Transactions
Txn DateAcceptedInsiderTypeSharesAvg PriceValueShares OwnedFiling
Feb 3, 2026Feb 4 1:50 AMLongitude Capital Partners II, LLC10% Owner
Sale
27,500$4.24$116.6K49,000(I)

View →

Feb 2, 2026Feb 4 1:50 AMLongitude Capital Partners II, LLC10% Owner
Sale
27,500$4.25$116.8K76,500(I)

View →

Jan 30, 2026Feb 4 1:50 AMLongitude Capital Partners II, LLC10% Owner
Sale
46,000$4.54$209.0K104,000(I)

View →

Jan 23, 2026Feb 4 1:50 AMLongitude Capital Partners II, LLC10% Owner
Sale
7,739$4.06$31.5K4,029,245(I)

View →

Jul 14, 2025Jul 14 9:16 PMSpignesi Robert G. Jr.
Proposed Sale
11,881$3.32$39.5K

View →

Jul 11, 2025Jul 11 7:22 PMSpignesi Robert G. Jr.
Proposed Sale
11,874$3.33$39.5K

View →

Jul 10, 2025Jul 10 8:33 PMSpignesi Robert G. Jr.
Proposed Sale
11,617$3.40$39.5K

View →

Jul 9, 2025Jul 9 8:46 PMSpignesi Robert G. Jr.
Proposed Sale
11,247$3.51$39.5K

View →

Jul 8, 2025Jul 8 9:06 PMSpignesi Robert G. Jr.
Proposed Sale
10,824$3.51$38.0K

View →

← Previous

Page 2 of 2

Stock Options & Derivatives
Txn DateAcceptedInsiderTypeSharesExercise PriceShares OwnedFiling
May 29, 2026Jun 2 11:45 PMInese LowensteinDirector
Grant/Award
25,574$2.3412,787(D)

View →

May 29, 2026Jun 2 11:44 PMMelinda Litherland PeiDirector
Grant/Award
25,574$2.3412,787(D)

View →

May 29, 2026Jun 2 11:42 PMKirk MalloyDirector
Grant/Award
25,574$2.3412,787(D)

View →

May 29, 2026Jun 2 11:41 PMSean M WirtjesCHIEF FINANCIAL OFFICER
Grant/Award
25,574$2.3412,787(D)

View →

May 29, 2026Jun 2 11:40 PMRobert G. Spignesi Jr.Director, PRESIDENT AND CEO
Grant/Award
25,574$2.3412,787(D)

View →

May 21, 2026May 26 11:27 PMKirk MalloyDirector
Grant/Award
38,700$2.0738,700(D)

View →

May 21, 2026May 26 11:26 PMInese LowensteinDirector
Grant/Award
38,700$2.0738,700(D)

View →

May 21, 2026May 26 11:25 PMMelinda Litherland PeiDirector
Grant/Award
38,700$2.0738,700(D)

View →

May 21, 2026May 26 11:25 PMRichard S KollenderDirector
Grant/Award
38,700$2.0738,700(D)

View →

May 21, 2026May 26 11:24 PMDafni BikaDirector
Grant/Award
38,700$2.0738,700(D)

View →

May 20, 2026May 22 8:30 PMBain Capital Life Sciences Investors, LLC10% Owner
Purchase
4,389,000$2.341,463,000(I)

View →

Feb 27, 2026Mar 2 11:11 PMNatale S RicciardiDirector
Option Exercise
842$0.750(D)

View →

Feb 11, 2026Feb 14 12:35 AMAddington J. Wilson JohnCHIEF OPERATING OFFICER
Grant/Award
147,000$4.20147,000(D)

View →

Feb 11, 2026Feb 14 12:34 AMSean M WirtjesCHIEF FINANCIAL OFFICER
Grant/Award
193,000$4.20193,000(D)

View →

Feb 11, 2026Feb 14 12:33 AMRobert G. Spignesi Jr.Director, PRESIDENT AND CEO
Grant/Award
528,000$4.20528,000(D)

View →

Jan 23, 2026Feb 4 1:50 AMLongitude Capital Partners II, LLC10% Owner
X
629,032$0.050(I)

View →